Page summary

https://stf.xelta.ai/ai-tool/photo-lab

Tested 2026-09-14 10:09:09 using Chrome 150.0.7871.46 (runtime settings)

SummaryWaterfallMetricsRenderingCoachPageXrayCPUThird party

This page is fast to paint and visually stable, but janky to interact with, loose on best practices, weak on user privacy and heavy to download.

74 / 100
Coach overall
76 / 100
Performance
73 / 100
Best practice
72 / 100
Privacy

How it loaded →

0 → 6.000 s · median run
Frame at 0 ms
start
Frame at 2400 ms
Largest paint2.400 s
Frame at 3300 ms
3.300 s
Frame at 4200 ms
4.200 s
Frame at 5100 ms
5.100 s
Frame at 6000 ms
Complete6.000 s
1.643 s
First Visual Change
1.986 s
Speed Index
1.978 s
Visual Complete 85%
6.000 s
Last Visual Change
TTFB492 msLCP1.968 sTBT1.198 sCLS0.00

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 13 CPU long tasks with the total of 2.294 s. The total blocking time is 1.198 s and 2 long tasks before first contentful paint with total time of 546 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.

Serve images in modern formats (AVIF, WebP)

0 / 100

The page ships 1 image (out of 1) in JPEG/PNG/GIF without a modern alternative. Wrap them in a <picture> with a <source type="image/avif"> or "image/webp" before the legacy <img>, or serve modern formats from your image pipeline directly. AVIF and WebP usually deliver 25–50% smaller files at the same quality.

Google Web Vitals

min · median · mean · max of 1 run
MetricMinMedianMeanMax
Time To First Byte (TTFB)492 ms492 ms492 ms492 ms
Largest Contentful Paint (LCP)1.968 s1.968 s1.968 s1.968 s
Cumulative Layout Shift (CLS)0000

Visual Metrics

min · median · mean · max of 1 run
MetricMinMedianMeanMax
First visual change1.643 s1.643 s1.643 s1.643 s
Last visual change6.000 s6.000 s6.000 s6.000 s
Speed index1.986 s1.986 s1.986 s1.986 s
Visual readiness4.357 s4.357 s4.357 s4.357 s
Visual complete 851.978 s1.978 s1.978 s1.978 s
Visual complete 952.145 s2.145 s2.145 s2.145 s
Visual complete 992.682 s2.682 s2.682 s2.682 s

CPU

min · median · mean · max of 1 run
MetricMinMedianMeanMax
Total Blocking Time1.198 s1.198 s1.198 s1.198 s
Max Potential FID312 ms312 ms312 ms312 ms
CPU long tasks 13131313
CPU last long task happens at5.617 s5.617 s5.617 s5.617 s

More metrics

min · median · mean · max of 1 run
MetricMinMedianMeanMax
First paint1.780 s1.780 s1.780 s1.780 s
Load event end2.136 s2.136 s2.136 s2.136 s

Waterfall

Run 1 SpeedIndex median

First paintFCPLCPDOMContentLoadedDOM interactiveLoadRender-blockingRedirectError

Rendering

Run 1 · median
0.000 s
0s2s4s6s

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

46 frames

Use --filmstrip.showAll to show all filmstrips.

Frame at 0 ms
0 ms
0 %
Frame at 1.200 s
1.200 s
0 %
Frame at 1.700 s
1.700 s
10 %
Frame at 1.800 s
1.800 s
22 %
Frame at 1.900 s
1.900 s
22 %
Frame at 2.000 s
2.000 s
87 %
Frame at 2.100 s
2.100 s
87 %
Frame at 2.200 s
2.200 s
98 %
Frame at 2.300 s
2.300 s
98 %
Frame at 2.400 s
2.400 s
98 %
Frame at 2.500 s
2.500 s
98 %
Frame at 2.600 s
2.600 s
98 %
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
99 %
Frame at 4.800 s
4.800 s
99 %
Frame at 4.900 s
4.900 s
99 %
Frame at 5.000 s
5.000 s
99 %
Frame at 5.100 s
5.100 s
99 %
Frame at 5.200 s
5.200 s
99 %
Frame at 5.300 s
5.300 s
99 %
Frame at 5.400 s
5.400 s
99 %
Frame at 5.500 s
5.500 s
99 %
Frame at 5.600 s
5.600 s
99 %
Frame at 5.700 s
5.700 s
99 %
Frame at 5.800 s
5.800 s
99 %
Frame at 5.900 s
5.900 s
99 %
Frame at 6.000 s
6.000 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 1.780 s on a 492 ms first byte; the 2 render-blocking requests were done by 968 ms and the remaining ~812 ms is style, layout and web-font loading. The largest paint followed at 1.968 s.

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

Render blocking requests

31 requests · 559.3 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 492 ms
882 ms
35.6 KB878 ms
css · stf.xelta.ai
376 ms
85.8 KB376 ms
css · stf.xelta.ai
107 ms
4.7 KB107 ms
3dlul65aa-nvq.jspotentially blocking
javascript · stf.xelta.ai
669 ms
73.3 KB669 ms
1ghsza2wgj0ob.jspotentially blocking
javascript · stf.xelta.ai
630 ms
44.0 KB630 ms
26--kr-ciax9i.jspotentially blocking
javascript · stf.xelta.ai
618 ms
42.8 KB618 ms
1yoy6xy7rnaz0.jspotentially blocking
javascript · stf.xelta.ai
615 ms
2.1 KB615 ms
1l6kg46xsxooe.jspotentially blocking
javascript · stf.xelta.ai
613 ms
11.9 KB613 ms
0hv62215nk21n.jspotentially blocking
javascript · stf.xelta.ai
611 ms
19.1 KB611 ms
23 more requests
all done by 1.274 s
275.7 KB
LCP resource
1787034972806-2474fb4d5cb1db43.png — downloaded by 1.334 s, rendered at 1.968 s
45 ms
13.3 KB45 ms
web font · stf.xelta.ai
603 ms
37.6 KB603 ms
web font · stf.xelta.ai
603 ms
9.6 KB603 ms
web font · stf.xelta.ai
609 ms
35.1 KB609 ms
0492 ms984 ms1.476 sFCP 1.780 sLCP 1.968 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.

What to fix first

Performance advice

76
1 error11 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 13 CPU long tasks with the total of 2.294 s. The total blocking time is 1.198 s and 2 long tasks before first contentful paint with total time of 546 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
  • unknown
  • self
  • self
  • self
  • self
  • self
  • self
  • self
  • self
  • self
  • self
  • self
warn(0)Serve images in modern formats (AVIF, WebP)modernImageFormats

The page ships 1 image (out of 1) in JPEG/PNG/GIF without a modern alternative. Wrap them in a <picture> with a <source type="image/avif"> or "image/webp" before the legacy <img>, or serve modern formats from your image pipeline directly. AVIF and WebP usually deliver 25–50% smaller files at the same quality.

AVIF and WebP routinely deliver 25–50% smaller files than JPEG and PNG at the same perceived quality, and every browser version still under support understands at least one of them. Ship modern formats either through a <picture> element with <source type="image/avif"> / "image/webp" entries in front of the legacy <img>, or directly from a content-negotiating image pipeline that returns AVIF / WebP when the client accepts it. https://web.dev/articles/serve-images-webp

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

The total JavaScript transfer size is 1.4 MB and the uncompressed size is 4.4 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://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/0inxmj29ffnqy.js6.4 KB20.3 KB
https://stf.xelta.ai/_next/static/chunks/17d1-bwqhg7yp.js9.7 KB27.2 KB
https://stf.xelta.ai/_next/static/chunks/1umv1owun4cfl.js8.6 KB33.7 KB
https://stf.xelta.ai/_next/static/chunks/2uoulaw6kucli.js10.1 KB26.2 KB
https://stf.xelta.ai/_next/static/chunks/36h4r9duhyjke.js11.1 KB37.2 KB
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https://stf.xelta.ai/_next/static/chunks/0r_-zfn80zo41.js2.3 KB2.7 KB
https://static.cloudflareinsights.com/beacon.min.js/v31edd6df95cf4e85bb4c19e7a9bdbcba178836298749510.1 KB29.6 KB
https://stf.xelta.ai/_next/static/chunks/0ga4rs1yp22vv.js2.4 KB3.0 KB
https://stf.xelta.ai/_next/static/chunks/2tldojfjwreij.js10.6 KB36.2 KB
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https://stf.xelta.ai/_next/static/chunks/31ks7s0dnpzv-.js7.3 KB21.3 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/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.../1123404090023729137.2 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
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https://stf.xelta.ai/_next/static/chunks/0_ierrc7whc8i.js10.5 KB31.3 KB
https://stf.xelta.ai/_next/static/chunks/3dh4veiardltk.js47.0 KB206.7 KB
warn(0)Total page size shouldn't be too bigpageSize

The page total transfer size is 7.1 MB, which is more than the coach limit of 3 MB. That is insane and you need to make it smaller.

Avoid having pages that have a transfer size over the wire of more than 3 MB (desktop) and 2 MB (mobile) because heavy pages hurt performance and are expensive for users on metered connections. Reference: HTTP Archive median page weight in 2024 was around 2.7 MB desktop / 2.4 MB mobile, so this rule fires when a page is above the modern median.

Offenders
URLTransferContent
https://stf.xelta.ai/ai-tool/photo-lab35.6 KB259.0 KB
https://stf.xelta.ai/cdn-cgi/speculation582 B151 B
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https://stf.xelta.ai/api/cms/maintenance1.6 KB43 B
https://stf.xelta.ai/api/quiz/quiz-events/active-banner1.6 KB43 B
https://stf.xelta.ai/api/cms/announcements?placement=APP_TOP1.6 KB26 B
https://photogpt.stg2.xelta.ai/api/credit-cost317 B151 B
https://stf.xelta.ai/_next/static/chunks/31ks7s0dnpzv-.js7.3 KB21.3 KB
https://stf.xelta.ai/api/photogpt/image...pi/photogpt/image613.5 KB611.6 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/3f1tw02kuplod.js3.3 KB6.2 KB
https://stf.xelta.ai/_next/static/chunks/2k5vpzc_p9jpq.js35.3 KB106.7 KB
https://stf.xelta.ai/api/geo1.8 KB155 B
https://connect.facebook.net/signals/config/1123404090023729.../1123404090023729137.2 KB485.1 KB
https://www.googletagmanager.com/gtag/js?id=G-CPG3NLBKHP&cx=c&gtm=4e6992186.6 KB567.5 KB
https://analytics.google.com/g/collect...gle.com/g/collectN/A0 b
https://www.google.co.in/ads/ga-audiences.../ads/ga-audiences408 B42 B
https://stats.g.doubleclick.net/g/collect...ick.net/g/collect555 B0 b
https://mpc-prod-27-s6uit34pua-uk.a.run.app/events?cee=noN/A0 b
https://stf.xelta.ai/_next/static/chunks/3m9-oomc-qdle.js1.4 KB455 B
https://stf.xelta.ai/_next/static/chunks/34zqwff648hvy.js10.7 KB33.9 KB
https://stf.xelta.ai/_next/static/chunks/0_ierrc7whc8i.js10.5 KB31.3 KB
https://stf.xelta.ai/_next/static/chunks/3dh4veiardltk.js47.0 KB206.7 KB
https://stf.xelta.ai/_next/image?url=%2Fchatboard%2Favtar.png&w=96&q=752.1 KB1.0 KB
https://telemetry.matchbestsoftware.online/faro/0 b0 b
https://telemetry.matchbestsoftware.online/faro/286 B2 B
https://www.facebook.com/tr/N/A0 b
warn(10)Avoid extra requests by setting cache headerscacheHeaders

The page has 9 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 4.5 MB 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
warn(50)Total CSS size shouldn't be too bigcssSize

The total CSS transfer size is 92.6 kB and uncompressed size is 688.9 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/0l1q20e5y-c75.css85.8 KB636.6 KB
https://stf.xelta.ai/_next/static/chunks/0kldb6fnstui0.css4.7 KB36.2 KB
warn(50)Total image size shouldn't be too bigimageSize

The page total image size is 5.3 MB. It's really big. Is the page using the right format for the images? Can they be lazy loaded? Are they compressed as good as they can be? Make them smaller by using https://imageoptim.com/.

Avoid having too many large images on the page. The images will not affect the first paint of the page, but it will eat bandwidth for the user.

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 19 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
warn(90)Don't scale images in the browseravoidScalingImages

The page has 1 image that are scaled more than 100 pixels. It would be better if those images are sent so the browser don't need to scale them.

It's easy to scale images in the browser and make sure they look good in different devices, however that is bad for performance! Scaling images in the browser takes extra CPU time and will hurt performance on mobile. And the user will download extra kilobytes (sometimes megabytes) of data that could be avoided. Don't do that, make sure you create multiple version of the same image server-side and serve the appropriate one.

Offenders
infoMake each CSS response smalloptimalCssSize

https://stf.xelta.ai/_next/static/chunks/0l1q20e5y-c75.css size is 87.8 kB (87820) 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/0l1q20e5y-c75.css85.8 KB636.6 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.

error(99)Avoid using incorrect mime typesmimeTypes

The page has 1 misconfigured mime type.

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

Best practice advice

73
2 warnings4 info
warn(0)Avoid too many third party requeststhirdParty

The page do 15% requests to third party domains (14 requests and 5.2 MB). First party is 79 requests and 1.9 MB. The page transfer more bytes from third party domains (5.2 MB) then first party (1.9 MB). The regex .*xelta.* was used to calculate first/third party requests.

Do not load most of your content from third party URLs.

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 91 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
infoMeta descriptionmetaDescription

The meta description is too long. It has 170 characters, the recommended max is 160

Use a page description to make the page more relevant to search engines.

warn(50)Page titlepageTitle

The title is too long by 12 characters. The recommended max is 60

Use a title to make the page more relevant to search engines.

infoDo not send too long headerslongHeaders

https://stf.xelta.ai/ai-tool/photo-lab has a header link that is 1725 characters long. https://stf.xelta.ai..._v2fun1jzxk.woff2 has a header content-security-policy-report-only that is 799 characters long. https://stf.xelta.ai..._v2fun1jzxk.woff2 has a header report-to that is 617 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.

Do not send response headers that are too long.

Offenders
infoAvoid use too many response headersmanyHeaders

https://stf.xelta.ai...nt/public/pricing has 33 headers.https://stf.xelta.ai/api/cms/maintenance has 33 headers.https://stf.xelta.ai...nts/active-banner has 33 headers.https://stf.xelta.ai...cms/announcements has 33 headers.https://stf.xelta.ai...pi/photogpt/image has 35 headers.https://stf.xelta.ai/api/geo has 32 headers.

Avoid send too many response headers.

Offenders

Privacy advice

72
5 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
warn(0)Do not share user data with third parties.thirdPartyPrivacy

The page has 11% requests that are 3rd party (10 requests with a size of 764.7 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.

TitleAI Photo Editor Online – Transform Photos with Prompts | Xelta Photo LabThe document title, shown in the browser tab and used by search results.
Layout viewport1358 × 3245 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 elements1,652Very 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 tags55Number 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 storage360 BData the page saved in localStorage, kept across visits.
Session storage188 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://media.xelta.ai/
  • https://fonts.googleapis.com/
  • https://fonts.gstatic.com/

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

5 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
  • Other Google APIs/SDKs
  • Google/Doubleclick Ads
Surveillance
  • Google Tag Manager
  • Facebook
  • Google Analytics
  • Other Google APIs/SDKs
  • Google/Doubleclick Ads
Social
  • Facebook
Analytics
  • Google Analytics
Ad
  • Google/Doubleclick Ads

Data from run 1

Visual Metrics

Visual milestones

all times from navigation start
Speed Index1.99 show quickly the page looked done
First Visual Change1.64 sfirst paint reaches the screen
Last Visual Change6.00 sscreen stops changing · 4.36 s after first
nothing painted yet
≥95% rendered
≥99%
First Visual Change1.64 s
1.98 sVisual Complete 85%
2.15 sVisual Complete 95%
2.68 sVisual Complete 99%
Last Visual Change6.00 s
Visual Readiness4.36 s· first to last change
01.0 s2.0 s3.0 s4.0 s5.0 s
Content milestones
Perception index
Visual progress
Visual progress at 0 s0.0s
Visual progress at 2.1 s2.1s
Visual progress at 2.8 s2.8s
Visual progress at 3.4 s3.4s
Visual progress at 4.1 s4.1s
Visual progress at 4.7 s4.7s
Visual progress at 5.4 s5.4s
Visual progress at 6 s6.0s
FCP1.78s
LCP1.97s
VC851.98s
Long tasks
0.0s1.2s2.4s3.6s4.8s6.0s

Google Web Vitals

from run 1

Largest Contentful Paint

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

1.968 sLCP render time

Phase breakdown

  • TTFB492 ms
  • Resource load delay821 ms
  • Resource load duration46 ms
  • Element render delay610 ms

Element

Element type
<section>
Size (w × h)
747900
URL
https://media.xelta....4fb4d5cb1db43.png
Load time
1.672 s

DOM path

body > div#app-root > div:eq(1) > section:eq(0)
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

Elements that shifted

Sorted by individual shift score (higher = bigger shift). The top entries usually account for most of the page's CLS.

  • #10.000<div class="hidden lg:flex items-center flex-shrink-0 ml-auto"></div>
    body > div#app-root > header > div > div:eq(2)
Layout shift

Elements that shifted by more than 0.01 are highlighted in the screenshot. If an element shifted outside the viewport, it won't appear here. Check the video or filmstrip to see the shift.

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 msDYNAMIC
cfEdge4 ms–
cfOrigin256 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 requests93
Total domains13
Transfer size6.8 MB
Content size10.4 MB
Missing compression0
Cookies41 third-party

Main document

status 200 · 0 redirects

https://stf.xelta.ai/ai-tool/photo-lab

HeaderValue
alt-svch3=":443"; ma=86400
cache-controlprivate, no-cache, no-store, max-age=0, must-revalidate
cf-cache-statusDYNAMIC
cf-raya3ae9841fad9a84b-DEL
content-encodingbr
content-security-policydefault-src 'self'; script-src 'self' 'nonce-R0bxslVehFUkup5b3aYqLQ==' '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:; worker-src 'self' blob:; 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 10:09:12 GMT
expect-ctmax-age=86400, enforce
link</_next/static/media/47fe1b7cd6e6ed85-s.p.3bh2vc0w-r-ll.woff2>; rel=preload; as="font"; crossorigin=""; nonce="R0bxslVehFUkup5b3aYqLQ=="; type="font/woff2", </_next/static/media/83afe278b6a6bb3c-s.p.2bn3s6zvc0dyp.woff2>; rel=preload; as="font"; crossorigin=""; nonce="R0bxslVehFUkup5b3aYqLQ=="; type="font/woff2", </_next/static/media/8dfd6563338cbf38-s.p.2uos8jt9rp249.woff2>; rel=preload; as="font"; crossorigin=""; nonce="R0bxslVehFUkup5b3aYqLQ=="; type="font/woff2", </_next/static/media/8e6fa89aa22d24ec-s.p.2o7m9ogm38dql.woff2>; rel=preload; as="font"; crossorigin=""; nonce="R0bxslVehFUkup5b3aYqLQ=="; type="font/woff2", </_next/static/media/9d0c71fa164043fa-s.p.2snziqcncuet5.woff2>; rel=preload; as="font"; crossorigin=""; nonce="R0bxslVehFUkup5b3aYqLQ=="; type="font/woff2", </_next/static/media/9e9f04e3c37952ab-s.p.0pan85mumqyf3.woff2>; rel=preload; as="font"; crossorigin=""; nonce="R0bxslVehFUkup5b3aYqLQ=="; type="font/woff2", </_next/static/media/a218039a3287bcfd-s.p.43zbiuwnnoiok.woff2>; rel=preload; as="font"; crossorigin=""; nonce="R0bxslVehFUkup5b3aYqLQ=="; type="font/woff2", </_next/static/media/c875c6f5d3e977ac-s.p.1h18_wedhzk4h.woff2>; rel=preload; as="font"; crossorigin=""; nonce="R0bxslVehFUkup5b3aYqLQ=="; type="font/woff2", </_next/static/media/ce62453a442c7f35-s.p.0a0h245ktd4x0.woff2>; rel=preload; as="font"; crossorigin=""; nonce="R0bxslVehFUkup5b3aYqLQ=="; type="font/woff2", </_next/static/media/e2334d715941921e-s.p.3o_v2fun1jzxk.woff2>; rel=preload; as="font"; crossorigin=""; nonce="R0bxslVehFUkup5b3aYqLQ=="; type="font/woff2", </_next/static/media/e8f2fbee2754df70-s.p.1dqa_6e_ad4sj.woff2>; rel=preload; as="font"; crossorigin=""; nonce="R0bxslVehFUkup5b3aYqLQ=="; type="font/woff2"
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=QZuM96qWdZ%2BeHDcogd7KFiBpGE3mOYDWLCBSHQ%2BRHr5wOkeDtcJSJ%2FK5PPVnPzEjkOBke4GOjw%2BJTETc5UCfrHNCvfjsZwYFWe7Tlvke4wh9ZsMbMb%2FRwjJBbo6Yag%3D%3D"}]}
servercloudflare
server-timingcfCacheStatus;desc="DYNAMIC" cfEdge;dur=4,cfOrigin;dur=256
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
8894.6%
202
11.1%
204
44.3%

Largest assets on the page (by transfer size)

Top 20 of 93

Requests and sizes per content type

9 types

Transfer size6.8 MB

  • image74.0%
  • javascript19.4%
  • font4.5%
  • css1.3%
  • html0.51%
  • json0.15%
  • favicon0.14%
  • plain0.02%
  • other0.01%

Content size10.4 MB

  • image48.1%
  • javascript40.2%
  • css6.3%
  • font2.8%
  • html2.4%
  • favicon0.08%
  • json0.02%
  • other0.00%
  • plain0.00%

Requests93

  • javascript49.5%
  • image18.3%
  • font11.8%
  • json8.6%
  • plain6.5%
  • css2.2%
  • html1.1%
  • favicon1.1%
  • other1.1%
ContentHeader SizeTransfer SizeContent SizeRequests
html0 b35.6 KB259.0 KB1
css0 b90.5 KB672.8 KB2
javascript0 b1.3 MB4.2 MB46
image291 B5.0 MB5.0 MB17
font0 b310.7 KB304.1 KB11
favicon0 b9.6 KB8.3 KB1
other0 b582 B151 B1
json0 b10.5 KB1.7 KB8
plain0 b1.4 KB2 B6
Total291 B6.8 MB10.4 MB93

Data per domain

13 domains
DomainTotal download timeTransfer SizeContent SizeRequests
stf.xelta.ai33.348 s1.8 MB3.8 MB77
static.cloudflareinsights.com237 ms10.1 KB29.6 KB1
media.xelta.ai45 ms13.3 KB12.8 KB1
pub-a5c9f998046243af9a6b5fdc3c07d449.r2.dev2.598 s4.3 MB4.3 MB1
photogpt.stg2.xelta.ai694 ms317 B151 B1
www.googletagmanager.com1.771 s488.2 KB1.4 MB3
connect.facebook.net749 ms247.6 KB895.2 KB2
analytics.google.com535 msN/A0 b1
www.google.co.in216 ms408 B42 B1
stats.g.doubleclick.net208 ms555 B0 b1
mpc-prod-27-s6uit34pua-uk.a.run.app568 msN/A0 b1
telemetry.matchbestsoftware.online296 ms286 B2 B2
www.facebook.com256 msN/A0 b1

Expires & last-modified statistics

typeminmedianmax
Expires0 seconds1 year1 year
Last modified1 hour2 days26 weeks

Requests loaded after onLoad event

33 requests

Includes requests done after load event end.

ContentTransfer SizeRequests
html0 b0
css0 b0
javascript870.4 KB15
image622.0 KB4
font0 b0
favicon9.6 KB1
plain1.4 KB6
json8.6 KB7
Total1.5 MB33

Requests loaded after onContentLoad

33 requests

Includes requests done after DOM content loaded.

ContentTransfer SizeRequests
html0 b0
css0 b0
javascript870.4 KB15
image622.0 KB4
font0 b0
favicon9.6 KB1
plain1.4 KB6
json8.6 KB7
Total1.5 MB33

CPU

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.

TBT1.198 s
Max potential input delay312 ms
Total long tasks13
Total time2.294 s
Last task at5.617 s
Before first paint546 ms2 tasks
Before FCP546 ms2 tasks
Before LCP715 ms3 tasks
After load1.579 s10 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 frames14showing the 10 with the most blocking time
Blocking time1.684 sacross all long frames — what hurts INP and TBT
Blocking before LCP592.7 msdelaying the largest paint — fix these first
Blocking after load1.079 safter the load event — didn't delay page load

What to fix first

ScriptFramesTime runningBlocking (share by run time)Forced style & layoutTriggered by
js3rd party2363.4 ms263.4 ms–script tag, timer or animation callback
fbevents.js3rd party1305.1 ms255.6 ms–script tag
11234040900237293rd party1312.6 ms247.1 ms–script tag
3dlul65aa-nvq.js2371.7 ms235.8 ms–event handler, script tag
js3rd party1147.3 ms97.4 ms–script tag
gtm.js3rd party185.9 ms36.1 ms–script tag
v31edd6df95cf4e85bb4c19e7a9bdbcba17883629874953rd party119.3 ms8.9 ms–module script
turbopack-24c8re3t_hr9w.js16.1 ms4.8 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 · 1.016 sat 606.3 ms · before LCP
blocking 454.5 ms
  • Scripts & other work576 ms
  • Animation callbacks1.2 ms
  • Style & layout439 ms
  • Render0 ms
1 script ran during this frame
Ran for
6.1 ms
How it started
script tag
Long animation frame #2 · 334.3 msat 4.101 s · after load
blocking 263.6 ms
  • Scripts & other work333.5 ms
  • Animation callbacks0.2 ms
  • Style & layout0.6 ms
  • Render0 ms
1 script ran during this frame
Ran for
312.6 ms
How it started
script tag
Long animation frame #3 · 308.4 msat 3.115 s · after load
blocking 258.4 ms
  • Scripts & other work308.4 ms
  • Animation callbacks0 ms
  • Style & layout0 ms
  • Render0 ms
1 script ran during this frame
fbevents.js3rd party
Ran for
305.1 ms
How it started
script tag
Long animation frame #4 · 224.5 msat 3.721 s · after load
blocking 174.5 ms
  • Scripts & other work224.5 ms
  • Animation callbacks0 ms
  • Style & layout0 ms
  • Render0 ms
1 script ran during this frame
js3rd party
Ran for
224.2 ms
How it started
script tag
Long animation frame #5 · 212.3 msat 2.442 s · after load
blocking 159.6 ms
  • Scripts & other work204.7 ms
  • Animation callbacks0.2 ms
  • Style & layout7.4 ms
  • Render0 ms
1 script ran during this frame
Ran for
201.9 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 #6 · 266 msat 1.804 s · before LCP
blocking 121.9 ms
  • Scripts & other work264 ms
  • Animation callbacks2 ms
  • Style & layout0 ms
  • Render0 ms
2 scripts ran during this frame
Ran for
19.3 ms
How it started
module script
Ran for
169.8 ms
How it started
script tag
Long animation frame #7 · 147.4 msat 4.458 s · after load
blocking 97.5 ms
  • Scripts & other work147.4 ms
  • Animation callbacks0 ms
  • Style & layout0 ms
  • Render0 ms
1 script ran during this frame
js3rd party
Ran for
147.3 ms
How it started
script tag
Long animation frame #8 · 139.3 msat 3.954 s · after load
blocking 89.2 ms
  • Scripts & other work139.3 ms
  • Animation callbacks0 ms
  • Style & layout0 ms
  • Render0 ms
1 script ran during this frame
js3rd party
Ran for
139.2 ms
Started by
TimerHandler:setTimeout
How it started
timer or animation callback
Long animation frame #9 · 86.2 msat 3.482 s · after load
blocking 36.2 ms
  • Scripts & other work86.2 ms
  • Animation callbacks0 ms
  • Style & layout0 ms
  • Render0 ms
1 script ran during this frame
gtm.js3rd party
Ran for
85.9 ms
How it started
script tag
Long animation frame #10 · 139.7 msat 1.655 s · before LCP
blocking 16.3 ms
  • Scripts & other work80.5 ms
  • Animation callbacks59.2 ms
  • Style & layout0 ms
  • Render0 ms

The browser did not report which script was responsible for this frame — typically its own style/layout work, or a cross-origin script it will not name.

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.

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

3 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.

  • pub-a5c9f998046243af9a6b5fdc3c07d449.r2.dev
  • mpc-prod-27-s6uit34pua-uk.a.run.app
  • telemetry.matchbestsoftware.online
Third party cookies1
.facebook.com1 cookie

First party vs third party

79 first · 14 third party

Transfer size6.8 MB

  • First party1.8 MB26.5%
  • Third party5.0 MB73.5%

Content size10.4 MB

  • First party3.8 MB36.7%
  • Third party6.6 MB63.3%

Requests93

  • First party7984.9%
  • Third party1415.1%

First party requests and sizes per content type

79 requests

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

ContentHeader SizeTransfer SizeContent SizeRequests
html0 b35.6 KB259.0 KB1
css0 b90.5 KB672.8 KB2
javascript0 b607.2 KB1.9 MB40
image0 b779.5 KB762.3 KB15
font0 b310.7 KB304.1 KB11
favicon0 b9.6 KB8.3 KB1
other0 b582 B151 B1
json0 b10.5 KB1.7 KB7
plain0 b590 B0 b1
TotalN/A1.8 MB3.8 MB79

Third party requests and sizes per content type

14 requests
ContentHeader SizeTransfer SizeContent SizeRequests
html0 b0 b0 b0
css0 b0 b0 b0
javascript0 b745.9 KB2.3 MB6
image291 B4.3 MB4.3 MB2
font0 b0 b0 b0
favicon0 b0 b0 b0
plain0 b841 B2 B5
json0 b0 b0 b1
Total278 B5.0 MB6.6 MB14