Page summary

https://stf.xelta.ai/models/image_generation/gpt-image-1-5-workflow

Tested 2026-09-14 11:01:21 using Chrome 150.0.7871.46 (runtime settings)

SummaryWaterfallMetricsRenderingCoachPageXrayCPUThird party

This page is fast to paint, visually stable and follows best practices, but a little janky to interact with and weak on user privacy.

75 / 100
Coach overall
75 / 100
Performance
98 / 100
Best practice
67 / 100
Privacy

How it loaded →

0 → 4.633 s · median run
Frame at 0 ms
start
Frame at 1400 ms
1.400 s
Frame at 2200 ms
Largest paint2.200 s
Frame at 3100 ms
3.100 s
Frame at 3900 ms
3.900 s
Frame at 4700 ms
Complete4.700 s
833 ms
First Visual Change
1.412 s
Speed Index
1.533 s
Visual Complete 85%
4.633 s
Last Visual Change
TTFB355 msLCP1.512 sTBT574 msCLS0.00

What to act on · top recommendations

Avoid using Google Tag Manager.

0 / 100

The page is using Google Tag Manager, this is a performance risk since non-tech users can add JavaScript to your page.

Avoid CPU Long Tasks

0 / 100

The page has 12 CPU long tasks with the total of 1.275 s. The total blocking time is 574 ms and 3 long tasks before first contentful paint with total time of 251 ms. However the CPU Long Task is depending on the computer/phones actual CPU speed, so you should measure this on the same type of the device that your user is using. Use Geckoprofiler for Firefox or Chromes tracelog to debug your long tasks.

Avoid extra requests by setting cache headers

0 / 100

The page has 74 requests that are missing a cache time. Configure a cache time so the browser doesn't need to download them every time. It will save 107.9 kB the next access.

Google Web Vitals

min · median · mean · max of 1 run
MetricMinMedianMeanMax
Time To First Byte (TTFB)355 ms355 ms355 ms355 ms
Largest Contentful Paint (LCP)1.512 s1.512 s1.512 s1.512 s
Cumulative Layout Shift (CLS)0000

Visual Metrics

min · median · mean · max of 1 run
MetricMinMedianMeanMax
First visual change833 ms833 ms833 ms833 ms
Last visual change4.633 s4.633 s4.633 s4.633 s
Speed index1.412 s1.412 s1.412 s1.412 s
Visual readiness3.800 s3.800 s3.800 s3.800 s
Visual complete 851.533 s1.533 s1.533 s1.533 s
Visual complete 951.533 s1.533 s1.533 s1.533 s
Visual complete 991.700 s1.700 s1.700 s1.700 s

CPU

min · median · mean · max of 1 run
MetricMinMedianMeanMax
Total Blocking Time574 ms574 ms574 ms574 ms
Max Potential FID248 ms248 ms248 ms248 ms
CPU long tasks 12121212
CPU last long task happens at2.401 s2.401 s2.401 s2.401 s

More metrics

min · median · mean · max of 1 run
MetricMinMedianMeanMax
First paint848 ms848 ms848 ms848 ms
Load event end918 ms918 ms918 ms918 ms

Waterfall

Run 1 SpeedIndex median

First paintFCPLCPDOMContentLoadedDOM interactiveLoadRender-blockingRedirectError

Rendering

Run 1 · median
0.000 s
0s1s2s3s4s

The red band on the timeline marks when the main thread was busy with long tasks: moments when the page could not paint or respond, however the video looks.

Download video

Filmstrip

42 frames

Use --filmstrip.showAll to show all filmstrips.

Frame at 0 ms
0 ms
0 %
Frame at 700 ms
700 ms
0 %
Frame at 800 ms
800 ms
0 %
Frame at 900 ms
900 ms
22 %
Frame at 1.000 s
1.000 s
21 %
Frame at 1.100 s
1.100 s
22 %
Frame at 1.200 s
1.200 s
22 %
Frame at 1.300 s
1.300 s
22 %
Frame at 1.400 s
1.400 s
24 %
Frame at 1.500 s
1.500 s
23 %
Frame at 1.600 s
1.600 s
98 %
Frame at 1.700 s
1.700 s
99 %
Frame at 1.800 s
1.800 s
99 %
Frame at 1.900 s
1.900 s
99 %
Frame at 2.000 s
2.000 s
99 %
Frame at 2.100 s
2.100 s
99 %
Frame at 2.200 s
2.200 s
99 %
Frame at 2.300 s
2.300 s
99 %
Frame at 2.400 s
2.400 s
99 %
Frame at 2.500 s
2.500 s
99 %
Frame at 2.600 s
2.600 s
99 %
Frame at 2.700 s
2.700 s
99 %
Frame at 2.800 s
2.800 s
99 %
Frame at 2.900 s
2.900 s
99 %
Frame at 3.000 s
3.000 s
99 %
Frame at 3.100 s
3.100 s
99 %
Frame at 3.200 s
3.200 s
99 %
Frame at 3.300 s
3.300 s
99 %
Frame at 3.400 s
3.400 s
99 %
Frame at 3.500 s
3.500 s
99 %
Frame at 3.600 s
3.600 s
99 %
Frame at 3.700 s
3.700 s
99 %
Frame at 3.800 s
3.800 s
99 %
Frame at 3.900 s
3.900 s
99 %
Frame at 4.000 s
4.000 s
99 %
Frame at 4.100 s
4.100 s
99 %
Frame at 4.200 s
4.200 s
99 %
Frame at 4.300 s
4.300 s
99 %
Frame at 4.400 s
4.400 s
99 %
Frame at 4.500 s
4.500 s
99 %
Frame at 4.600 s
4.600 s
99 %
Frame at 4.700 s
4.700 s
100 %

Click a frame to seek the video to that moment. The dot marks frames where the page changed visually.

Why was rendering delayed?

Rendering was not meaningfully delayed. First paint landed at 848 ms on a 355 ms first byte. The largest paint followed at 1.512 s.

Want to see how much CSS style-recalculation work delayed FCP and LCP, plus CPU long tasks? Run with --cpu.

Render blocking requests

32 requests · 432.1 KB

Blocking requests delay both paints: the browser renders nothing until they arrive, so they push First Contentful Paint and everything after it, including the largest paint (LCP). Requests that block the parser inside the body stall everything after them in the document. Load JavaScript with defer or async, and keep non-critical CSS off the critical path with media attributes. Bars show when each request loaded on a clock that runs to the last paint (the dashed line is FCP, the clock ends at LCP); the gap after the bars is style and layout work. Web fonts are context, not blockers: text renders invisible or in a fallback face while they load, so a font finishing after a paint is the classic reason text changed late.

RequestWhen it loadedTransferDownload
document
stf.xelta.ai · TTFB 355 ms
352 ms
29.4 KB350 ms
3xmygce8lqq0r.jspotentially blocking
plain · stf.xelta.ai
288 ms
1.0 KB288 ms
08zki_z_aekd6.jspotentially blocking
plain · stf.xelta.ai
286 ms
1022 B286 ms
3dlul65aa-nvq.jspotentially blocking
javascript · stf.xelta.ai
284 ms
73.3 KB284 ms
0_x7sa7mcy2_r.jspotentially blocking
plain · stf.xelta.ai
284 ms
1022 B284 ms
0brb2k9r3hc2t.jspotentially blocking
plain · stf.xelta.ai
283 ms
1.0 KB283 ms
3sy5ezjqwbusz.jspotentially blocking
javascript · stf.xelta.ai
278 ms
48.8 KB278 ms
0r_-zfn80zo41.jspotentially blocking
javascript · stf.xelta.ai
253 ms
2.3 KB253 ms
0qyja2b6pvkmf.jspotentially blocking
javascript · stf.xelta.ai
251 ms
9.9 KB251 ms
24 more requests
all done by 671 ms
293.9 KB
LCP resource
image — downloaded by 1.206 s, rendered at 1.512 s
401 ms
16.7 KB401 ms
web font · stf.xelta.ai
246 ms
37.0 KB246 ms
web font · stf.xelta.ai
246 ms
8.2 KB246 ms
web font · stf.xelta.ai
246 ms
35.0 KB246 ms
0378 ms1.134 sFCP 848 msLCP 1.512 s

Coach

The coach helps you find performance problems on your web page using web performance best practice rules. And gives you advice on privacy and best practices. Tested using Coach-core version 9.2.1.

Performance advice

75
2 errors8 warnings3 info
warn(0)Avoid using Google Tag Manager.googleTagManager

The page is using Google Tag Manager, this is a performance risk since non-tech users can add JavaScript to your page.

Google Tag Manager makes it possible for non tech users to add scripts to your page that will downgrade performance.

warn(0)Avoid CPU Long TaskslongTasks

The page has 12 CPU long tasks with the total of 1.275 s. The total blocking time is 574 ms and 3 long tasks before first contentful paint with total time of 251 ms. However the CPU Long Task is depending on the computer/phones actual CPU speed, so you should measure this on the same type of the device that your user is using. Use Geckoprofiler for Firefox or Chromes tracelog to debug your long tasks.

Long CPU tasks locks the thread. To the user this is commonly visible as a "locked up" page where the browser is unable to respond to user input; this is a major source of bad user experience on the web today. However the CPU Long Task is depending on the computer/phones actual CPU speed, so you should measure this on the same type of the device that your user is using. To debug you should use the Chrome timeline log and drag/drop it into devtools or use Firefox Geckoprofiler.

Offenders
  • self
  • self
  • self
  • self
  • self
  • self
  • self
  • self
  • self
  • self
  • self
  • self
warn(0)Avoid extra requests by setting cache headerscacheHeaders

The page has 74 requests that are missing a cache time. Configure a cache time so the browser doesn't need to download them every time. It will save 107.9 kB the next access.

The easiest way to make your page fast is to avoid doing requests to the server. Setting a cache header on your server response will tell the browser that it doesn't need to download the asset again during the configured cache time! Always try to set a cache time if the content doesn't change for every request.

Offenders
infoAvoid too many fontsfewFonts
warn(0)Total JavaScript size shouldn't be too bigjavascriptSize

The total JavaScript transfer size is 1.6 MB and the uncompressed size is 5.1 MB. This is totally crazy! There is really room for improvement here.

A lot of JavaScript often means you are downloading more than you need. How complex is the page and what can the user do on the page? Do you use multiple JavaScript frameworks?

Offenders
URLTransferContent
https://static.cloudflareinsights.com/beacon.min.js/v31edd6df95cf4e85bb4c19e7a9bdbcba178836298749510.1 KB29.6 KB
https://stf.xelta.ai/_next/static/chunks/0_cis5bf89bk3.js3.7 KB9.3 KB
https://stf.xelta.ai/_next/static/chunks/3ur639cpt-7ui.js11.3 KB38.9 KB
https://stf.xelta.ai/_next/static/chunks/3dlul65aa-nvq.js73.3 KB232.0 KB
https://stf.xelta.ai/_next/static/chunks/3sy5ezjqwbusz.js48.8 KB171.2 KB
https://stf.xelta.ai/_next/static/chunks/turbopack-24c8re3t_hr9w.js6.6 KB18.4 KB
https://stf.xelta.ai/_next/static/chunks/043c2jn61g8ch.js6.5 KB20.4 KB
https://stf.xelta.ai/_next/static/chunks/17d1-bwqhg7yp.js9.6 KB27.2 KB
https://stf.xelta.ai/_next/static/chunks/1zleqhxssu9oh.js11.0 KB30.1 KB
https://stf.xelta.ai/_next/static/chunks/2uoulaw6kucli.js10.1 KB26.2 KB
https://stf.xelta.ai/_next/static/chunks/00up96pc24a4e.js10.4 KB25.8 KB
https://stf.xelta.ai/_next/static/chunks/0v-y_275lo0v3.js10.8 KB29.1 KB
https://stf.xelta.ai/_next/static/chunks/3b1qi14iervjp.js10.2 KB27.5 KB
https://stf.xelta.ai/_next/static/chunks/0hr8xag69xxbh.js8.0 KB20.9 KB
https://stf.xelta.ai/_next/static/chunks/1wf8v9a5j3yl_.js8.3 KB32.8 KB
https://stf.xelta.ai/_next/static/chunks/2f2i__v854m6r.js9.2 KB30.0 KB
https://stf.xelta.ai/_next/static/chunks/36h4r9duhyjke.js11.1 KB37.2 KB
https://stf.xelta.ai/_next/static/chunks/2qwl8sgb3v89v.js19.7 KB62.0 KB
https://stf.xelta.ai/_next/static/chunks/2dunoo0yt9za-.js12.7 KB33.7 KB
https://stf.xelta.ai/_next/static/chunks/3scmkth2l2ag2.js15.3 KB43.9 KB
https://stf.xelta.ai/_next/static/chunks/1j2emy2xhevk5.js6.7 KB15.0 KB
https://stf.xelta.ai/_next/static/chunks/2_bm7tpe8f5ne.js24.1 KB77.7 KB
https://stf.xelta.ai/_next/static/chunks/2e28r49c7zefw.js18.5 KB51.1 KB
https://stf.xelta.ai/_next/static/chunks/1ghsza2wgj0ob.js44.0 KB140.5 KB
https://stf.xelta.ai/_next/static/chunks/07so5nrchfe88.js10.2 KB32.5 KB
https://stf.xelta.ai/_next/static/chunks/3lj2255jzxgl-.js16.1 KB51.2 KB
https://stf.xelta.ai/_next/static/chunks/0qyja2b6pvkmf.js9.9 KB28.2 KB
https://stf.xelta.ai/_next/static/chunks/0tynzomeo1z-p.js1.6 KB1003 B
https://stf.xelta.ai/_next/static/chunks/11ottfcrb__c6.js1.9 KB1.8 KB
https://stf.xelta.ai/_next/static/chunks/0r_-zfn80zo41.js2.3 KB2.7 KB
https://stf.xelta.ai/_next/static/chunks/16orvb4qnjgm7.js41.8 KB139.5 KB
https://stf.xelta.ai/_next/static/chunks/1r4b-2voe6my2.js2.4 KB2.9 KB
https://stf.xelta.ai/_next/static/chunks/2tldojfjwreij.js10.6 KB36.2 KB
https://stf.xelta.ai/_next/static/chunks/1_sa18c8qfniy.js6.2 KB16.2 KB
https://www.googletagmanager.com/gtm.js?id=GTM-5XNS5NQ2115.0 KB324.1 KB
https://www.googletagmanager.com/gtag/js?id=G-CPG3NLBKHP186.6 KB567.5 KB
https://connect.facebook.net/en_US/fbevents.js110.4 KB410.0 KB
https://stf.xelta.ai/_next/static/chunks/1ki4hltmjvw2d.js77.6 KB253.9 KB
https://stf.xelta.ai/_next/static/chunks/3f1tw02kuplod.js3.3 KB6.2 KB
https://stf.xelta.ai/_next/static/chunks/2k5vpzc_p9jpq.js35.3 KB106.7 KB
https://connect.facebook.net/signals/config/1123404090023729.../1123404090023729137.0 KB485.1 KB
https://www.googletagmanager.com/gtag/js?id=G-CPG3NLBKHP&cx=c&gtm=4e6992186.6 KB567.5 KB
https://stf.xelta.ai/_next/static/chunks/3m9-oomc-qdle.js1.4 KB455 B
https://stf.xelta.ai/_next/static/chunks/0en-dl3l5-bm2.js10.7 KB33.9 KB
https://stf.xelta.ai/_next/static/chunks/3601yvag566gb.js10.4 KB31.2 KB
https://stf.xelta.ai/_next/static/chunks/3dh4veiardltk.js47.0 KB206.7 KB
https://stf.xelta.ai/_next/static/chunks/0inxmj29ffnqy.js6.4 KB20.3 KB
https://stf.xelta.ai/_next/static/chunks/1umv1owun4cfl.js8.6 KB33.7 KB
https://stf.xelta.ai/_next/static/chunks/1ytwdotu3mdq4.js10.3 KB27.8 KB
https://stf.xelta.ai/_next/static/chunks/2699mm_b_frg_.js8.0 KB21.0 KB
https://stf.xelta.ai/_next/static/chunks/2rlqhawoa2-1z.js24.1 KB77.8 KB
https://stf.xelta.ai/_next/static/chunks/0qj250lktf-9_.js12.8 KB34.0 KB
https://stf.xelta.ai/_next/static/chunks/08f3iux3oyyat.js12.5 KB34.1 KB
https://stf.xelta.ai/_next/static/chunks/26--kr-ciax9i.js42.8 KB141.9 KB
https://stf.xelta.ai/_next/static/chunks/28l2j31ow31z4.js17.9 KB49.0 KB
warn(10)Apply the right priority hints to the LCP imagelcpImageHints

The LCP image has loading="lazy", which delays its download until the browser thinks it is near the viewport — and so directly delays the LCP metric. Remove loading="lazy" from the LCP image. The LCP image is missing fetchpriority="high". Adding it tells the browser to fetch the image with high priority instead of the default heuristic (which often deprioritises hero images that are loaded after the HTML has been parsed).

When the Largest Contentful Paint element is an image, the browser priority hints applied to that element directly affect the LCP metric. The image must NOT be loading="lazy" (that defers the fetch until near-viewport, which is the opposite of what an LCP image needs) and SHOULD be fetchpriority="high" (so the browser fetches it with high priority instead of guessing). https://web.dev/articles/fetch-priority

Offenders
  • <img alt="Background" loading="lazy" decoding="async" data-nimg="fill" class="absolute inset-0 object-cover object-bottom z-0 pointer-events-none" sizes="100vw" srcset="/_next/image?url=https%3A%2F%2Fmedia.xelta.ai%2Fuploads%2Finput%2Fdefault%2F1787558816156-9dcb721c4f2e2ef9.webp&amp;w=640&amp;q=75 640w, /_next/image?url=https%3A%2F%2Fmedia.xelta.ai%2Fuploads%2Finput%2Fdefault%2F1787558816156-9dcb721c4f2e2ef9.webp&amp;w=750&amp;q=75 750w, /_next/image?url=https%3A%2F%2Fmedia.xelta.ai%2Fuploads%2Finput%2Fdefault%2F1787558816156-9dcb721c4f2e2ef9.webp&amp;w=828&amp;q=75 828w, /_next/image?url=https%3A%2F%2Fmedia.xelta.ai%2Fuploads%2Finput%2Fdefault%2F1787558816156-9dcb721c4f2e2ef9.webp&amp;w=1080&amp;q=75 1080w, /_next/image?url=https%3A%2F%2Fmedia.xelta.ai%2Fuploads%2Finput%2Fdefault%2F1787558816156-9dcb721c4f2e2ef9.webp&amp;w=1200&amp;q=75 1200w, /_next/image?url=https%3A%2F%2Fmedia.xelta.ai%2Fuploads%2Finput%2Fdefault%2F1787558816156-9dcb721c4f2e2ef9.webp&amp;w=1920&amp;q=75 1920w" src="/_next/image?url=https%3A%2F%2Fmedia.xelta.ai%2Fuploads%2Finput%2Fdefault%2F1787558816156-9dcb721c4f2e2ef9.webp&amp;w=1920&amp;q=75" style="position: absolute; height: 100%; width: 100%; inset: 0px; color: transparent;">
  • <img alt="Background" loading="lazy" decoding="async" data-nimg="fill" class="absolute inset-0 object-cover object-bottom z-0 pointer-events-none" sizes="100vw" srcset="/_next/image?url=https%3A%2F%2Fmedia.xelta.ai%2Fuploads%2Finput%2Fdefault%2F1787558816156-9dcb721c4f2e2ef9.webp&amp;w=640&amp;q=75 640w, /_next/image?url=https%3A%2F%2Fmedia.xelta.ai%2Fuploads%2Finput%2Fdefault%2F1787558816156-9dcb721c4f2e2ef9.webp&amp;w=750&amp;q=75 750w, /_next/image?url=https%3A%2F%2Fmedia.xelta.ai%2Fuploads%2Finput%2Fdefault%2F1787558816156-9dcb721c4f2e2ef9.webp&amp;w=828&amp;q=75 828w, /_next/image?url=https%3A%2F%2Fmedia.xelta.ai%2Fuploads%2Finput%2Fdefault%2F1787558816156-9dcb721c4f2e2ef9.webp&amp;w=1080&amp;q=75 1080w, /_next/image?url=https%3A%2F%2Fmedia.xelta.ai%2Fuploads%2Finput%2Fdefault%2F1787558816156-9dcb721c4f2e2ef9.webp&amp;w=1200&amp;q=75 1200w, /_next/image?url=https%3A%2F%2Fmedia.xelta.ai%2Fuploads%2Finput%2Fdefault%2F1787558816156-9dcb721c4f2e2ef9.webp&amp;w=1920&amp;q=75 1920w" src="/_next/image?url=https%3A%2F%2Fmedia.xelta.ai%2Fuploads%2Finput%2Fdefault%2F1787558816156-9dcb721c4f2e2ef9.webp&amp;w=1920&amp;q=75" style="position: absolute; height: 100%; width: 100%; inset: 0px; color: transparent;">
error(20)Avoid using incorrect mime typesmimeTypes

The page has 80 misconfigured mime types.

It's not a great idea to let browsers guess content types (content sniffing), in some cases it can actually be a security risk.

Offenders
error(20)Avoid missing and error requestsresponseOk
warn(50)Total CSS size shouldn't be too bigcssSize

The total CSS transfer size is 92.2 kB and uncompressed size is 687.3 kB. That is big and the CSS could most probably be smaller.

Delivering a massive amount of CSS to the browser is not the best thing you can do, because it means more work for the browser when parsing the CSS against the HTML and that makes the rendering slower. Try to send only the CSS that is used on that page. And make sure to remove CSS rules when they aren't used anymore.

Offenders
URLTransferContent
https://stf.xelta.ai/_next/static/chunks/1lgy-fxfy7-hi.css85.5 KB634.9 KB
https://stf.xelta.ai/_next/static/chunks/0kldb6fnstui0.css4.6 KB36.2 KB
warn(60)Don't use private headers on static contentprivateAssets

The page has 5 requests with private headers. The main page has a private header. It could be right in some cases where the user can be logged in and served specific content. But if your asset is static it should never be private. Make sure that the assets really should be private and only used by one user. Otherwise, make it cacheable for everyone.

If you set private headers on content, that means that the content are specific for that user. Static content should be able to be cached and used by everyone. Avoid setting the cache header to private.

Offenders
infoLong cache headers is goodcacheHeadersLong

The page has 30 requests that have a shorter cache time than one year (but still a cache time).

Setting a cache header is good. Setting a long cache header (a year) is even better because the asset will stay in the browser cache across visits. For content-hashed URLs (e.g. app.4af2.css) you can safely use Cache-Control: max-age=31536000, immutable. For unversioned URLs that may change, use a revalidating strategy instead.

Offenders
infoMake each CSS response smalloptimalCssSize

https://stf.xelta.ai/_next/static/chunks/1lgy-fxfy7-hi.css size is 87.5 kB (87512) and that is bigger than the limit of 25 kB. Try to keep each CSS response under 25 kB.

Render-blocking CSS holds up the first paint until it has fully downloaded, parsed and applied, so smaller CSS files mean a faster start. Split your CSS into a small critical bundle inlined or eagerly loaded, with the rest lazy-loaded.

Offenders
URLTransferContent
https://stf.xelta.ai/_next/static/chunks/1lgy-fxfy7-hi.css85.5 KB634.9 KB
warn(95)Inline CSS for faster first renderinlineCss

The page has both inline CSS and CSS requests even though it uses a HTTP/2-ish connection. If you have many users on slow connections, it can be better to only inline the CSS. Run your own tests and check the waterfall graph to see what happens.

In the early days of the Internet, inlining CSS was one of the ugliest things you can do. That has changed if you want your page to start rendering fast for your user. Always inline the critical CSS when you use HTTP/1 and HTTP/2 (avoid doing CSS requests that block rendering) and lazy load and cache the rest of the CSS. It is a little more complicated when using HTTP/2. Does your server support HTTP push? Then maybe that can help. Do you have a lot of users on a slow connection and are serving large chunks of HTML? Then it could be better to use the inline technique, becasue some servers always prioritize HTML content over CSS so the user needs to download the HTML first, before the CSS is downloaded.

Best practice advice

98
3 info
infoAvoid unnecessary headersunnecessaryHeaders

There are 1 response that sets a p3p header. There are 5 responses that sets both a max-age and expires header. There are 3 responses that sets a pragma no-cache header (that is a request header). There are 188 responses that sets a server header.

Do not send headers that you don't need. We look for p3p, cache-control and max-age, pragma, server and x-frame-options headers. Have a look at Andrew Betts - Headers for Hackers talk as a guide https://www.youtube.com/watch?v=k92ZbrY815c or read https://www.fastly.com/blog/headers-we-dont-want.

Offenders
infoDo not send too long headerslongHeaders

https://stf.xelta.ai...mage-1-5-workflow has a header link that is 1927 characters long. https://stf.xelta.ai...ta.ai/_next/image has a header content-security-policy-report-only that is 798 characters long. https://stf.xelta.ai...ta.ai/_next/image has a header report-to that is 622 characters long. https://stf.xelta.ai...ta.ai/_next/image has a header content-security-policy-report-only that is 799 characters long. https://stf.xelta.ai...ta.ai/_next/image has a header report-to that is 629 characters long. https://stf.xelta.ai...ta.ai/_next/image has a header content-security-policy-report-only that is 799 characters long. https://stf.xelta.ai...ta.ai/_next/image has a header report-to that is 619 characters long. https://stb.xelta.ai...nts/active-banner has a header report-to that is 621 characters long. https://connect.face...en_US/fbevents.js has a header content-security-policy that is 1344 characters long. https://connect.face...en_US/fbevents.js has a header permissions-policy that is 874 characters long. https://connect.face.../1123404090023729 has a header content-security-policy that is 1344 characters long. https://connect.face.../1123404090023729 has a header permissions-policy that is 874 characters long. https://stf.xelta.ai.../script-character has a header content-security-policy-report-only that is 799 characters long. https://stf.xelta.ai.../script-character has a header report-to that is 621 characters long. https://stf.xelta.ai...erse/reel-creator has a header content-security-policy-report-only that is 798 characters long. https://stf.xelta.ai...erse/reel-creator has a header report-to that is 616 characters long. https://stf.xelta.ai...n/veo-30-workflow has a header content-security-policy-report-only that is 799 characters long. https://stf.xelta.ai...n/veo-30-workflow has a header report-to that is 621 characters long.

Do not send response headers that are too long.

Offenders
infoAvoid use too many response headersmanyHeaders

https://stb.xelta.ai...nts/active-banner has 36 headers.https://stf.xelta.ai/api/geo has 32 headers.

Avoid send too many response headers.

Offenders

Privacy advice

67
1 error5 warnings2 info
warn(0)Avoid using Google Analyticsga

The page is using Google Analytics meaning you share your users private information with Google. You should use analytics that care about user privacy, something like https://matomo.org.

Google Analytics share private user information with Google that your user hasn't agreed on sharing.

warn(0)Avoid embedding services from surveillance capitalist companiessurveillance

The page embeds 5 resources from companies that profit from user surveillance. Consider privacy-respecting alternatives.

Embedding scripts or iframes from companies whose business model is surveillance capitalism (Google, Facebook, etc.) leaks detailed user data on every page view, often before the user has had a chance to consent. See https://en.wikipedia.org/wiki/Surveillance_capitalism for background. Prefer privacy-respecting alternatives where possible.

Offenders
infoSet a Cross-Origin-Embedder-Policy header so cross-origin subresources opt in to being embedded.crossOriginEmbedderPolicyHeader

Set a Cross-Origin-Embedder-Policy header (typically require-corp or credentialless) on the document response to control cross-origin embedding.

Cross-Origin-Embedder-Policy (COEP) makes the page refuse to load cross-origin subresources unless they explicitly opt in via CORP or CORS. Together with Cross-Origin-Opener-Policy it puts the page in a cross-origin isolated context, which mitigates cross-window side-channel attacks (Spectre) and unlocks high-resolution timers and SharedArrayBuffer. https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Cross-Origin-Embedder-Policy

Offenders
warn(0)Set a Cross-Origin-Opener-Policy header to isolate the page from cross-origin windows.crossOriginOpenerPolicyHeader

Set a Cross-Origin-Opener-Policy header (typically same-origin) on the document response to isolate the page from cross-origin windows.

Cross-Origin-Opener-Policy (COOP) lets a page sever its window-group ties to cross-origin documents that opened it or that it opens. Together with Cross-Origin-Embedder-Policy it puts the page in a cross-origin isolated context, which mitigates cross-window side-channel attacks (Spectre) and unlocks high-resolution timers and SharedArrayBuffer. https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Cross-Origin-Opener-Policy

Offenders
infoSet a Cross-Origin-Resource-Policy header to limit who may embed the page.crossOriginResourcePolicyHeader

Set a Cross-Origin-Resource-Policy header (same-origin, same-site or cross-origin) on the document response to limit who may embed it.

Cross-Origin-Resource-Policy (CORP) is a per-response opt-in that tells the browser which origins are allowed to embed the resource. It blocks cross-origin or cross-site no-cors embedding (img, script, iframe, etc.) and is one of the building blocks of cross-origin isolation. https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Cross-Origin-Resource-Policy

Offenders
error(0)Serve all responses on HTTPS (when you are on HTTPS)mixedContent

You need to serve all responses on HTTPS. The page have 2 responses using HTTP. That is a privacy and security risk.

You need to make sure that if you are on HTTPS, all responses are on HTTPS so that the content served are secured.

Offenders
warn(0)Do not share user data with third parties.thirdPartyPrivacy

The page has 5% requests that are 3rd party (10 requests with a size of 764.6 kB). The page also have request to companies that harvest data from users and do not respect users privacy (see https://en.wikipedia.org/wiki/Surveillance_capitalism). The page do 2 utility requests and uses 2 utility tools. The page do 3 tag-manager requests and uses 1 tag-manager tool. The page do 9 survelliance requests and uses 5 survelliance tools. The page do 9 surveillance requests and uses 5 surveillance tools. The page do 3 social requests and uses 1 social tool. The page do 1 analytics request and uses 1 analytics tool. The page do 1 ad request and uses 1 ad tool.

Using third party requests shares user information with that third party. Please avoid that! The project https://github.com/patrickhulce/third-party-web is used to categorize first/third party requests.

Offenders
warn(90)Avoid third party cookies that is used to track the user.thirdPartyCookies

The page sets 1 third party cookie.

Third party cookies are used to track the user. They are automatically blocked in Safari and Firefox.

Offenders
  • .facebook.com

Page info

A snapshot of what the browser actually built for this page: the document, how big and deep the DOM tree is and what it kept in storage. Big, deep trees are slower to style and lay out, so the counts Chrome warns about carry a flag.

Page info

Document

What the page says it is and how large it rendered.

TitleGPT Image 1.5 - AI ModelThe document title, shown in the browser tab and used by search results.
Layout viewport1350 × 690 pxThe width the page laid out at, and the full height of the rendered document.

DOM structure

How much markup the browser has to build, style and lay out.

DOM elements1,403Very large, slows layout and styleTotal HTML elements. Fewer means less for the browser to style, lay out and paint.
Avg DOM depth10How deeply elements are nested on average.
Max DOM depth16The deepest nesting on the page. Deep branches cost more style recalculation.
Iframes1Embedded documents. Each is a separate page the browser loads and renders.
Script tags70Number of script elements. More scripts usually means more main-thread work.

Storage and connection

What the page stored on the client, and the network it was tested on.

Local storage725 BData the page saved in localStorage, kept across visits.
Session storage412 BData kept in sessionStorage for this tab session only.
Connection type4GWhat the Network Information API reported for the test connection.

Resource hints

4 hints
dns-prefetch
  • https://media.xelta.ai/
preconnect
  • https://fonts.googleapis.com/
  • https://fonts.gstatic.com/
  • https://media.xelta.ai/

Technologies used to build the page

Data collected using Coach-core version 9.2.1. With updated code from Webappanalyzer 2026-05-04. Use --browsertime.firefox.includeResponseBodies html or --browsertime.chrome.includeResponseBodies html to help Wappalyzer find more information about technologies used.

Detected technologies

6 technologies

Third-party tools

16 tools

Data collected using Third Party Web version 0.29.2.

Utility
  • Cloudflare
  • Other Google APIs/SDKs
Tag-manager
  • Google Tag Manager
Survelliance
  • Google Tag Manager
  • Facebook
  • Google Analytics
  • Google/Doubleclick Ads
  • Other Google APIs/SDKs
Surveillance
  • Google Tag Manager
  • Facebook
  • Google Analytics
  • Google/Doubleclick Ads
  • Other Google APIs/SDKs
Social
  • Facebook
Analytics
  • Google Analytics
Ad
  • Google/Doubleclick Ads

Data from run 1

Visual Metrics

Visual milestones

all times from navigation start
Speed Index1.41 show quickly the page looked done
First Visual Change0.83 sfirst paint reaches the screen
Last Visual Change4.63 sscreen stops changing · 3.80 s after first
≥99%
0.83 sFirst Visual Change
1.53 sVisual Complete 85% · Visual Complete 95%
1.70 sVisual Complete 99%
Last Visual Change4.63 s
Visual Readiness3.80 s· first to last change
01.0 s2.0 s3.0 s4.0 s
Content milestones
Perception index
Visual progress
Visual progress at 0 s0.0s
Visual progress at 1.2 s1.2s
Visual progress at 1.8 s1.8s
Visual progress at 2.4 s2.4s
Visual progress at 2.9 s2.9s
Visual progress at 3.5 s3.5s
Visual progress at 4.1 s4.1s
Visual progress at 4.7 s4.7s
FCP0.85s
LCP1.51s
VC851.53s
Long tasks
0.0s0.9s1.9s2.8s3.8s4.7s

Google Web Vitals

from run 1
355 msTTFB
Good
574 msTBT
Needs improvement

Largest Contentful Paint

When the page main content is rendered, collected via the Largest Contentful Paint API. Read more about Largest Contentful Paint.

1.512 sLCP render time

Phase breakdown

  • TTFB355 ms
  • Resource load delay453 ms
  • Resource load duration404 ms
  • Element render delay300 ms

Element

Element type
<img>
Size (w × h)
731700
URL
https://stf.xelta.ai...ta.ai/_next/image
Load time
1.401 s

DOM path

body > div#app-root > footer > img
LCP

The LCP element is highlighted in the screenshot. If nothing is highlighted the element was removed before the screenshot or the LCP API couldn't find it.

The Largest Contentful Paint API matched this image:

LCP element

Cumulative Layout Shift

How much the page's content shifts as it loads, collected via the Cumulative Layout Shift API.

0.000cumulative layout shift score

No layout shifts were detected on this page.

Browser Metrics

Navigation Timing
Extra timings

Server timings

Timing data the server chose to expose through Server-Timing response headers on the main document — typically backend time, cache status or experiment flags.

Server timings

3 entries
NameDurationDescription
cfCacheStatus0 msHIT
cfEdge38 ms–
cfOrigin0 ms–

Custom metrics collected through JavaScript

There are no custom configured scripts.

Extra metrics collected using scripting

There are no custom extra metrics from scripting.

PageXray

How the page is built.

HTTP versionHTTP/2.0
Total requests190
Total domains15
Transfer size2.3 MB
Content size6.3 MB
Missing compression0
Cookies81 third-party

Main document

status 200 · 0 redirects

https://stf.xelta.ai/models/image_generation/gpt-image-1-5-workflow

HeaderValue
alt-svch3=":443"; ma=86400
cache-controlprivate, max-age=604800, must-revalidate
cf-cache-statusHIT
cf-raya3aee4b77d03a816-DEL
content-encodingbr
content-security-policydefault-src 'self'; script-src 'self' 'nonce-e1kweD5Bguzkwp+T1S5HrA==' 'strict-dynamic' https:; style-src 'self' 'unsafe-inline' https://fonts.googleapis.com; font-src 'self' https://fonts.gstatic.com data:; img-src 'self' data: blob: https:; media-src 'self' https: blob:; connect-src 'self' https: wss:; frame-src 'self' https:; frame-ancestors 'none'; object-src 'none'; base-uri 'self'; form-action 'self'
content-security-policy-report-onlydefault-src 'self'; script-src 'self' 'unsafe-inline' 'unsafe-eval' https:; style-src 'self' 'unsafe-inline' https:; img-src 'self' data: blob: https:; font-src 'self' data: https:; media-src 'self' data: blob: https:; connect-src 'self' https: wss:; worker-src 'self' blob:; frame-src 'self' https:; object-src 'none'; base-uri 'self'; form-action 'self' https:; frame-ancestors 'self';
content-typetext/html; charset=utf-8
dateMon, 14 Sep 2026 11:01:23 GMT
expect-ctmax-age=86400, enforce
last-modifiedMon, 14 Sep 2026 11:01:23 GMT
link</_next/static/media/47fe1b7cd6e6ed85-s.p.3bh2vc0w-r-ll.woff2>; rel=preload; as="font"; crossorigin=""; nonce="e1kweD5Bguzkwp+T1S5HrA=="; type="font/woff2", </_next/static/media/83afe278b6a6bb3c-s.p.2bn3s6zvc0dyp.woff2>; rel=preload; as="font"; crossorigin=""; nonce="e1kweD5Bguzkwp+T1S5HrA=="; type="font/woff2", </_next/static/media/8dfd6563338cbf38-s.p.2uos8jt9rp249.woff2>; rel=preload; as="font"; crossorigin=""; nonce="e1kweD5Bguzkwp+T1S5HrA=="; type="font/woff2", </_next/static/media/8e6fa89aa22d24ec-s.p.2o7m9ogm38dql.woff2>; rel=preload; as="font"; crossorigin=""; nonce="e1kweD5Bguzkwp+T1S5HrA=="; type="font/woff2", </_next/static/media/9d0c71fa164043fa-s.p.2snziqcncuet5.woff2>; rel=preload; as="font"; crossorigin=""; nonce="e1kweD5Bguzkwp+T1S5HrA=="; type="font/woff2", </_next/static/media/9e9f04e3c37952ab-s.p.0pan85mumqyf3.woff2>; rel=preload; as="font"; crossorigin=""; nonce="e1kweD5Bguzkwp+T1S5HrA=="; type="font/woff2", </_next/static/media/a218039a3287bcfd-s.p.43zbiuwnnoiok.woff2>; rel=preload; as="font"; crossorigin=""; nonce="e1kweD5Bguzkwp+T1S5HrA=="; type="font/woff2", </_next/static/media/c875c6f5d3e977ac-s.p.1h18_wedhzk4h.woff2>; rel=preload; as="font"; crossorigin=""; nonce="e1kweD5Bguzkwp+T1S5HrA=="; type="font/woff2", </_next/static/media/ce62453a442c7f35-s.p.0a0h245ktd4x0.woff2>; rel=preload; as="font"; crossorigin=""; nonce="e1kweD5Bguzkwp+T1S5HrA=="; type="font/woff2", </_next/static/media/e2334d715941921e-s.p.3o_v2fun1jzxk.woff2>; rel=preload; as="font"; crossorigin=""; nonce="e1kweD5Bguzkwp+T1S5HrA=="; type="font/woff2", </_next/static/media/e8f2fbee2754df70-s.p.1dqa_6e_ad4sj.woff2>; rel=preload; as="font"; crossorigin=""; nonce="e1kweD5Bguzkwp+T1S5HrA=="; type="font/woff2", </_next/static/chunks/1lgy-fxfy7-hi.css>; rel=preload; as="style"; nonce="e1kweD5Bguzkwp+T1S5HrA==", </_next/static/chunks/0kldb6fnstui0.css>; rel=preload; as="style"; nonce="e1kweD5Bguzkwp+T1S5HrA=="
nel{"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
permissions-policycamera=(), microphone=(self), geolocation=(), interest-cohort=()
referrer-policysame-origin strict-origin-when-cross-origin
report-to{"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=gc6FtsUAr96%2BN%2FUmFczvaFpXRuJ47hITOlEaxAzxkI0Hi6v4Pu7czzm8vY5maxQ7tXHlU7OVDqInwowYTsaGc4BX5i4k6h1SeFp2aWsDzfNV%2FWLM9DjhVTOJ0Rgy4w%3D%3D"}]}
servercloudflare
server-timingcfCacheStatus;desc="HIT" cfEdge;dur=38,cfOrigin;dur=0
speculation-rules"/cdn-cgi/speculation"
strict-transport-securitymax-age=31536000; includeSubDomains; preload
varyrsc, next-router-state-tree, next-router-prefetch, next-router-segment-prefetch, Accept-Encoding
x-content-type-optionsnosniff
x-frame-optionsSAMEORIGIN
x-xss-protection1; mode=block

Response codes

200
17692.6%
202
10.5%
204
52.6%
401
21.1%
404
63.2%

Largest assets on the page (by transfer size)

Top 20 of 190

Requests and sizes per content type

10 types

Transfer size2.3 MB

  • javascript67.6%
  • font13.3%
  • image6.6%
  • other6.4%
  • css3.9%
  • html1.3%
  • favicon0.42%
  • json0.39%
  • xml0.06%
  • plain0.06%

Content size6.3 MB

  • javascript77.2%
  • css10.4%
  • font4.7%
  • html3.3%
  • other2.2%
  • image2.1%
  • favicon0.13%
  • json0.04%
  • xml0.01%
  • plain0.00%

Requests182

  • other44.5%
  • javascript30.2%
  • image8.8%
  • font6.0%
  • json4.4%
  • plain3.3%
  • css1.1%
  • html0.55%
  • favicon0.55%
  • xml0.55%
ContentHeader SizeTransfer SizeContent SizeRequests
html0 b29.4 KB211.9 KB1
css0 b90.0 KB671.2 KB2
javascript0 b1.5 MB4.9 MB55
image0 b152.8 KB132.7 KB16
font0 b309.1 KB304.1 KB11
favicon0 b9.6 KB8.3 KB1
other0 b148.4 KB141.3 KB81
json0 b9.2 KB2.8 KB8
plain0 b1.4 KB2 B6
xml0 b1.5 KB737 B1
Total0 b2.3 MB6.3 MB182

Data per domain

15 domains
DomainTotal download timeTransfer SizeContent SizeRequests
stf.xelta.ai34.178 s1.5 MB4.0 MB166
static.cloudflareinsights.com149 ms10.1 KB29.6 KB1
stb.xelta.ai508 ms3.2 KB98 B4
cms-b.stg2.xelta.ai1.376 s1.1 KB69 B2
devpmt.xelta.ai946 ms746 B117 B2
www.googletagmanager.com858 ms488.2 KB1.4 MB3
connect.facebook.net335 ms247.5 KB895.2 KB2
us-assets.i.posthog.com1.908 s66 B0 b2
analytics.google.com225 msN/A0 b1
stats.g.doubleclick.net212 ms555 B0 b1
www.google.co.in226 ms408 B42 B1
mpc-prod-27-s6uit34pua-uk.a.run.app356 msN/A0 b1
us.i.posthog.com1.224 s495 B174 B1
telemetry.matchbestsoftware.online173 ms286 B2 B2
www.facebook.com221 msN/A0 b1

Expires & last-modified statistics

typeminmedianmax
Expires0 seconds4 days1 year
Last modified0 seconds2 days2 weeks

Requests loaded after onLoad event

127 requests

Includes requests done after load event end.

ContentTransfer SizeRequests
html0 b0
css0 b0
javascript1.1 MB25
image8.5 KB3
font0 b0
favicon9.6 KB1
plain1.4 KB6
other148.0 KB80
json7.2 KB7
xml1.5 KB1
Total1.3 MB127

Requests loaded after onContentLoad

139 requests

Includes requests done after DOM content loaded.

ContentTransfer SizeRequests
html0 b0
css0 b0
javascript1.1 MB25
image151.0 KB15
font0 b0
favicon9.6 KB1
plain1.4 KB6
other148.0 KB80
json7.2 KB7
xml1.5 KB1
Total1.4 MB139

CPU

https://stf.xelta.ai/_next/static/chunks/3dlul65aa-nvq.js is responsible for 42% of blocking time
279 ms of 660 ms total. Defer it, replace it with a lighter alternative, or move its work off the main thread to recover most of your TBT.
Get deeper CPU insight with one extra run
Run with --enableProfileRun to see where main-thread time went, blocking time and CPU cost per script, module and function, forced reflows and frame stability. The data is collected in one extra run, so the timing metrics of your measured runs stay untouched.

Long tasks

Tasks ≥ 50 ms blocking the main thread, collected via the Long Task API.

TBT574 ms
Max potential input delay248 ms
Total long tasks12
Total time1.275 s
Last task at2.401 s
Before first paint251 ms3 tasks
Before FCP251 ms3 tasks
Before LCP552 ms5 tasks
After load1.024 s9 tasks

Long Animation Frames

A long animation frame (LOAF) is a frame that took ≥ 50 ms from input to the next paint. The part beyond the threshold is blocking time, the number that hurts Interaction to Next Paint and Total Blocking Time. Break long tasks up (scheduler.yield(), smaller chunks) or move the work off the main thread. Read more about the Long Animation Frames API.

Long animation frames10every frame ≥ 50 ms
Blocking time769.8 msacross all long frames — what hurts INP and TBT
Forced style & layout1.7 msscripts reading layout mid-frame
Blocking before LCP392.2 msdelaying the largest paint — fix these first
Blocking after load624.9 msafter the load event — didn't delay page load
Input waiting2 framesa real interaction was delayed (INP)

What to fix first

ScriptFramesTime runningBlocking (share by run time)Forced style & layoutTriggered by
3dlul65aa-nvq.js2338.5 ms279.1 ms1.7 msevent handler, script tag
11234040900237293rd party1178.7 ms128.2 ms–script tag
fbevents.js3rd party1166.1 ms116.2 ms–script tag
1ki4hltmjvw2d.js1110.6 ms61.5 ms–script tag
js3rd party2139 ms39.2 ms–script tag, timer or animation callback
gtm.js3rd party166 ms16.1 ms–script tag
js3rd party164.4 ms14.5 ms–script tag
v31edd6df95cf4e85bb4c19e7a9bdbcba17883629874953rd party110.1 ms2.9 ms–module script
turbopack-24c8re3t_hr9w.js17.6 ms2.2 ms–script tag

A frame's blocking time is split between its scripts by their share of the frame's work, capped at each script's own run time — blocking from work no script owns (HTML parsing, browser internals) stays unattributed. The per-script blocking view below uses the same attribution.

Long animation frame #1 · 304.6 msat 1.117 s · before LCP
input was waitingblocking 247.3 ms
  • Scripts & other work255.4 ms
  • Animation callbacks49.2 ms
  • Style & layout0 ms
  • Render0 ms
1 script ran during this frame · forced style & layout 1.7 ms
Ran for
248 ms
Forced style and layout
1.7 ms
Started by
MessagePort.onmessage
How it started
event handler
Source function
z
Position in source
character 3191 into the file (locate it via DevTools → Performance → the Long Animation Frames track)
Long animation frame #2 · 180.9 msat 2.204 s · after load
blocking 129.4 ms
  • Scripts & other work180.4 ms
  • Animation callbacks0.1 ms
  • Style & layout0.4 ms
  • Render0 ms
1 script ran during this frame
Ran for
178.7 ms
How it started
script tag
Long animation frame #3 · 166.3 msat 1.785 s · after load
blocking 116.3 ms
  • Scripts & other work166.3 ms
  • Animation callbacks0 ms
  • Style & layout0 ms
  • Render0 ms
1 script ran during this frame
fbevents.js3rd party
Ran for
166.1 ms
How it started
script tag
Long animation frame #4 · 414.8 msat 385.2 ms · before LCP
blocking 102.3 ms
  • Scripts & other work353.6 ms
  • Animation callbacks0.5 ms
  • Style & layout60.7 ms
  • Render0 ms
2 scripts ran during this frame
Ran for
7.6 ms
How it started
script tag
Ran for
10.1 ms
How it started
module script
Long animation frame #5 · 112.2 msat 1.647 s · after load
blocking 61.9 ms
  • Scripts & other work111.4 ms
  • Animation callbacks0 ms
  • Style & layout0.8 ms
  • Render0 ms
1 script ran during this frame
Ran for
110.6 ms
How it started
script tag
Long animation frame #6 · 99.8 msat 809.7 ms · before LCP
input was waitingblocking 42.6 ms
  • Scripts & other work98.9 ms
  • Animation callbacks0.9 ms
  • Style & layout0 ms
  • Render0 ms
1 script ran during this frame
Ran for
90.5 ms
How it started
script tag
Long animation frame #7 · 81.4 msat 2.043 s · after load
blocking 31.4 ms
  • Scripts & other work81.4 ms
  • Animation callbacks0 ms
  • Style & layout0 ms
  • Render0 ms
1 script ran during this frame
js3rd party
Ran for
81.2 ms
How it started
script tag
Long animation frame #8 · 66.3 msat 1.961 s · after load
blocking 16.2 ms
  • Scripts & other work66.3 ms
  • Animation callbacks0 ms
  • Style & layout0 ms
  • Render0 ms
1 script ran during this frame
gtm.js3rd party
Ran for
66 ms
How it started
script tag
Long animation frame #9 · 64.5 msat 2.401 s · after load
blocking 14.5 ms
  • Scripts & other work64.5 ms
  • Animation callbacks0 ms
  • Style & layout0 ms
  • Render0 ms
1 script ran during this frame
js3rd party
Ran for
64.4 ms
How it started
script tag
Long animation frame #10 · 57.9 msat 2.130 s · after load
blocking 7.9 ms
  • Scripts & other work57.9 ms
  • Animation callbacks0 ms
  • Style & layout0 ms
  • Render0 ms
1 script ran during this frame
js3rd party
Ran for
57.8 ms
Started by
TimerHandler:setTimeout
How it started
timer or animation callback

Blocking time per script (browser-reported)

How much each script blocked the main thread, derived from the Long Animation Frame API. Each frame's blocking time is split between its scripts by their share of the frame's work, capped at each script's own run time — blocking from work no script owns (HTML parsing, browser internals) is not attributed (older data credits the script that started the frame). The closest answer to "which script should I fix to improve TBT" the platform exposes.

Forced layout per script

Each long animation frame reports how much time each script spent forcing synchronous style and layout, i.e. JavaScript reading layout-triggering properties mid-execution. Same actionable answer as forced reflows above but measured directly by the browser instead of inferred from the trace.

Scripts forcing layout

1 of 1 script

Third party

Third party requests categorised by Third party web version 0.29.2.

Third-party requests19
Tools6
Categories6
Third-party cookies1

Categories

6 categories

Requests by category19

  • survelliance9 req · 5 tools47.4%
  • tag-manager3 req · 1 tool15.8%
  • social3 req · 1 tool15.8%
  • utility2 req · 2 tools10.5%
  • analytics1 req · 1 tool5.3%
  • ad1 req · 1 tool5.3%

Third party requests and tools

6 categories
utilityCloudflareOther Google APIs/SDKs2 requests · 2 tools
tag-managerGoogle Tag Manager3 requests · 1 tool
survellianceGoogle Tag ManagerFacebookGoogle Analytics+ 2 more9 requests · 5 tools
socialFacebook3 requests · 1 tool
analyticsGoogle Analytics1 requests · 1 tool
adGoogle/Doubleclick Ads1 requests · 1 tool

Unmatched third party domains

4 domains

Domains that didn't match any tool in Third party web. If you are sure they are third party domains, please do a PR to that project. You can also fine tune the list using --firstParty.

  • us-assets.i.posthog.com
  • mpc-prod-27-s6uit34pua-uk.a.run.app
  • us.i.posthog.com
  • telemetry.matchbestsoftware.online
Third party cookies1
.facebook.com1 cookie

First party vs third party

174 first · 16 third party

Transfer size2.3 MB

  • First party1.5 MB67.8%
  • Third party747.5 KB32.2%

Content size6.3 MB

  • First party4.0 MB63.0%
  • Third party2.3 MB37.0%

Requests190

  • First party17491.6%
  • Third party168.4%

First party requests and sizes per content type

174 requests

Calculated using .*xelta.* (use --firstParty to configure).

ContentHeader SizeTransfer SizeContent SizeRequests
html0 b29.4 KB211.9 KB1
css0 b90.0 KB671.2 KB2
javascript0 b822.0 KB2.5 MB49
image0 b152.4 KB132.7 KB15
font0 b309.1 KB304.1 KB11
favicon0 b9.6 KB8.3 KB1
other0 b148.4 KB141.3 KB81
json0 b9.2 KB2.8 KB7
plain0 b586 B0 b1
xml0 b1.5 KB737 B1
TotalN/A1.5 MB4.0 MB174

Third party requests and sizes per content type

16 requests
ContentHeader SizeTransfer SizeContent SizeRequests
html0 b0 b0 b0
css0 b0 b0 b0
javascript0 b745.7 KB2.3 MB6
image0 b408 B42 B1
font0 b0 b0 b0
favicon0 b0 b0 b0
plain0 b841 B2 B5
json0 b0 b0 b1
TotalN/A747.5 KB2.3 MB16