Run 1 summary

https://xelta.ai/models/video_audio_generation/kling-3-0-pro-i2v-workflow

Tested 2026-09-25 19:00:00 using Chrome 150.0.7871.46 (runtime settings)

SummaryWaterfallMetricsRenderingCoachPageXrayThird party

Summary

Google Web Vitals

734 msTTFB
3.872 sLargest Contentful Paint
0.142Cumulative Layout Shift
1.376 sTotal Blocking Time

Loading

980 msFirst Paint
9.083 sFully Loaded
349 msMax Potential FID

Page weight & requests

2.1 MBTotal transfer size
7.4 MBTotal content size
122Requests

CPU

15Long tasks
3.908 sLast long task at

Visual progress

970 msFirst Visual Change
2.569 sSpeed Index
4.881 sVisual Complete 85%
5.014 sVisual Complete 99%
6.920 sLast Visual Change
Screenshot
Run 1 · after page complete

Waterfall

First paintFCPLCPDOMContentLoadedDOM interactiveLoadRender-blockingRedirectError

Rendering

Run 1
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

57 frames

Use --filmstrip.showAll to show all filmstrips.

Frame at 0 ms
0 ms
0 %
Frame at 900 ms
900 ms
0 %
Frame at 1.000 s
1.000 s
42 %
Frame at 1.100 s
1.100 s
42 %
Frame at 1.200 s
1.200 s
42 %
Frame at 1.300 s
1.300 s
42 %
Frame at 1.400 s
1.400 s
42 %
Frame at 1.500 s
1.500 s
42 %
Frame at 1.600 s
1.600 s
42 %
Frame at 1.700 s
1.700 s
54 %
Frame at 1.800 s
1.800 s
58 %
Frame at 1.900 s
1.900 s
73 %
Frame at 2.000 s
2.000 s
60 %
Frame at 2.100 s
2.100 s
60 %
Frame at 2.200 s
2.200 s
60 %
Frame at 2.500 s
2.500 s
60 %
Frame at 2.600 s
2.600 s
61 %
Frame at 2.700 s
2.700 s
61 %
Frame at 2.800 s
2.800 s
61 %
Frame at 3.200 s
3.200 s
61 %
Frame at 3.400 s
3.400 s
62 %
Frame at 3.500 s
3.500 s
63 %
Frame at 3.600 s
3.600 s
66 %
Frame at 3.700 s
3.700 s
68 %
Frame at 3.800 s
3.800 s
68 %
Frame at 3.900 s
3.900 s
68 %
Frame at 4.000 s
4.000 s
68 %
Frame at 4.100 s
4.100 s
68 %
Frame at 4.200 s
4.200 s
68 %
Frame at 4.300 s
4.300 s
68 %
Frame at 4.400 s
4.400 s
68 %
Frame at 4.500 s
4.500 s
68 %
Frame at 4.600 s
4.600 s
68 %
Frame at 4.700 s
4.700 s
68 %
Frame at 4.800 s
4.800 s
68 %
Frame at 4.900 s
4.900 s
89 %
Frame at 5.000 s
5.000 s
89 %
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
99 %
Frame at 6.100 s
6.100 s
99 %
Frame at 6.200 s
6.200 s
99 %
Frame at 6.300 s
6.300 s
99 %
Frame at 6.400 s
6.400 s
99 %
Frame at 6.500 s
6.500 s
99 %
Frame at 6.600 s
6.600 s
99 %
Frame at 6.700 s
6.700 s
99 %
Frame at 6.800 s
6.800 s
99 %
Frame at 6.900 s
6.900 s
99 %
Frame at 7.000 s
7.000 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 980 ms on a 734 ms first byte. The largest paint followed at 3.872 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 · 493.1 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
xelta.ai · TTFB 734 ms
733 ms
32.6 KB732 ms
2wi2e8w47e9wv.jspotentially blocking
javascript · xelta.ai
169 ms
44.6 KB169 ms
32-znt2vcsu-6.jspotentially blocking
javascript · xelta.ai
167 ms
10.9 KB167 ms
14cb63e2s9lm2.jspotentially blocking
javascript · xelta.ai
162 ms
23.1 KB162 ms
0qyja2b6pvkmf.jspotentially blocking
javascript · xelta.ai
160 ms
9.3 KB160 ms
0ou3hmd3420at.jspotentially blocking
javascript · xelta.ai
154 ms
13.9 KB154 ms
2mdaz0u31bpck.jspotentially blocking
javascript · xelta.ai
152 ms
1.2 KB152 ms
2dknsmb64ir51.jspotentially blocking
javascript · xelta.ai
150 ms
7.4 KB150 ms
1up2sajt-q-8n.jspotentially blocking
javascript · xelta.ai
144 ms
10.4 KB144 ms
24 more requests
all done by 916 ms
372.4 KB
LCP resource
1787559577416-su36m.mp4 — downloaded by 2.760 s, rendered at 3.872 s
857 ms
317 B857 ms
web font · xelta.ai · finished after first paint
43 ms
8.8 KB43 ms
web font · xelta.ai · finished after first paint
35 ms
65.6 KB35 ms
web font · xelta.ai · finished after first paint
16 ms
37.7 KB16 ms
01.936 s2.904 sFCP 980 msLCP 3.872 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

78
3 errors8 warnings3 info
warn(0)Don't scale images in the browseravoidScalingImages

The page has 10 images 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
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 15 CPU long tasks with the total of 2.179 s. The total blocking time is 1.376 s and 1 long task before first contentful paint with total time of 103 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
  • unknown
  • self
  • self
  • self
  • self
  • self
  • self
  • self
  • self
  • self
  • self
  • self
  • self
  • self
  • self
warn(0)Avoid extra requests by setting cache headerscacheHeaders

The page has 11 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 20.8 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
warn(0)Total JavaScript size shouldn't be too bigjavascriptSize

The total JavaScript transfer size is 1.4 MB and the uncompressed size is 4.5 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://xelta.ai/_next/static/chunks/0_cis5bf89bk3.js3.1 KB9.3 KB
https://xelta.ai/_next/static/chunks/3er0xpd5wsvv-.js10.6 KB38.9 KB
https://xelta.ai/_next/static/chunks/2cc4dk9_-w4i-.js72.6 KB232.0 KB
https://xelta.ai/_next/static/chunks/25ym4jnna99b5.js48.1 KB171.2 KB
https://xelta.ai/_next/static/chunks/turbopack-1vqwnc7wbbpm2.js6.0 KB18.4 KB
https://xelta.ai/_next/static/chunks/18aqwx-h-pcbx.js5.8 KB20.8 KB
https://xelta.ai/_next/static/chunks/2uoulaw6kucli.js9.4 KB26.2 KB
https://xelta.ai/_next/static/chunks/403qh4uu73dc5.js5.1 KB14.3 KB
https://xelta.ai/_next/static/chunks/3s-luugsbv2y2.js10.1 KB25.7 KB
https://xelta.ai/_next/static/chunks/0a1xcxgdoh-2g.js10.7 KB31.9 KB
https://xelta.ai/_next/static/chunks/00up96pc24a4e.js9.7 KB25.8 KB
https://xelta.ai/_next/static/chunks/3wuo8wdooey29.js7.8 KB34.0 KB
https://xelta.ai/_next/static/chunks/145edjrwa1pk1.js14.6 KB46.8 KB
https://xelta.ai/_next/static/chunks/3harezu8knhoz.js7.8 KB21.0 KB
https://xelta.ai/_next/static/chunks/2qwl8sgb3v89v.js19.0 KB62.0 KB
https://xelta.ai/_next/static/chunks/0v-y_275lo0v3.js10.0 KB29.1 KB
https://xelta.ai/_next/static/chunks/1rttzs2jjmcrm.js43.8 KB140.6 KB
https://xelta.ai/_next/static/chunks/1spzo3397ba2t.js5.8 KB14.5 KB
https://xelta.ai/_next/static/chunks/2_mphrdu04vzv.js13.1 KB39.3 KB
https://xelta.ai/_next/static/chunks/1ogtzw8v6na23.js17.8 KB54.4 KB
https://xelta.ai/_next/static/chunks/3t2yvpmaf17_6.js22.8 KB67.1 KB
https://xelta.ai/_next/static/chunks/2f2i__v854m6r.js8.4 KB30.0 KB
https://xelta.ai/_next/static/chunks/1vagg_skbh5uc.js1.2 KB1.7 KB
https://xelta.ai/_next/static/chunks/0r_-zfn80zo41.js1.6 KB2.7 KB
https://xelta.ai/_next/static/chunks/2mdaz0u31bpck.js1.2 KB971 B
https://xelta.ai/_next/static/chunks/2dknsmb64ir51.js7.4 KB30.7 KB
https://xelta.ai/_next/static/chunks/1up2sajt-q-8n.js10.4 KB35.6 KB
https://xelta.ai/_next/static/chunks/0qyja2b6pvkmf.js9.3 KB28.2 KB
https://xelta.ai/_next/static/chunks/36h4r9duhyjke.js10.5 KB37.2 KB
https://xelta.ai/_next/static/chunks/14cb63e2s9lm2.js23.1 KB106.5 KB
https://xelta.ai/_next/static/chunks/0ou3hmd3420at.js13.9 KB42.0 KB
https://xelta.ai/_next/static/chunks/2wi2e8w47e9wv.js44.6 KB170.9 KB
https://xelta.ai/_next/static/chunks/32-znt2vcsu-6.js10.9 KB37.7 KB
https://xelta.ai/_next/static/chunks/0ga4rs1yp22vv.js2.4 KB3.0 KB
https://xelta.ai/_next/static/chunks/3pzd7gqy3lw2b.js10.6 KB36.4 KB
https://xelta.ai/_next/static/chunks/1e2gzhrdpsa04.js6.1 KB16.3 KB
https://xelta.ai/_next/static/chunks/112farhsp9at-.js6.6 KB15.8 KB
https://xelta.ai/_next/static/chunks/1nlwvy4lxglg9.js1.2 KB151 B
https://xelta.ai/_next/static/chunks/3yloscmx17qc-.js2.6 KB3.9 KB
https://xelta.ai/_next/static/chunks/16aoeha2a-odl.js5.9 KB15.8 KB
https://xelta.ai/_next/static/chunks/3aea5tta4zd_f.js1.2 KB151 B
https://xelta.ai/_next/static/chunks/00jz7czrjjgum.js9.3 KB29.7 KB
https://xelta.ai/_next/static/chunks/2oue1a6qt5s20.js1.4 KB493 B
https://xelta.ai/_next/static/chunks/3xyo6h1q5antq.js1.7 KB1.2 KB
https://xelta.ai/_next/static/chunks/3c9-jx0jhg1zb.js2.1 KB1.8 KB
https://xelta.ai/analytics/gtm.js1.6 KB403 B
https://www.googletagmanager.com/gtag/js?id=G-CPG3NLBKHP188.2 KB571.0 KB
https://xelta.ai/analytics/ga4.js1.4 KB144 B
https://xelta.ai/analytics/meta-pixel.js1.6 KB514 B
https://xelta.ai/_next/static/chunks/1ki4hltmjvw2d.js77.6 KB253.9 KB
https://xelta.ai/_next/static/chunks/3a5v007d95ttp.js41.8 KB139.5 KB
https://www.googletagmanager.com/gtm.js?id=GTM-5XNS5NQ2114.9 KB324.2 KB
https://connect.facebook.net/en_US/fbevents.js111.7 KB414.7 KB
https://connect.facebook.net/signals/config/1123404090023729.../1123404090023729139.6 KB497.5 KB
https://xelta.ai/_next/static/chunks/3f1tw02kuplod.js3.2 KB6.2 KB
https://xelta.ai/_next/static/chunks/2k5vpzc_p9jpq.js35.3 KB106.7 KB
https://xelta.ai/_next/static/chunks/28r3ari2she5h.js1.2 KB217 B
https://xelta.ai/_next/static/chunks/0ibqqj5n22681.js10.5 KB31.0 KB
https://xelta.ai/_next/static/chunks/38cqstpd1yycs.js47.0 KB206.7 KB
infoAvoid too many fontsfewFonts

The page has 6 font requests. Do you really need them? What value does the fonts give the user?

How many fonts do you need on a page for the user to get the message? Fonts can slow down the rendering of content, try to avoid loading too many of them because worst case it can make the text invisible until they are loaded (FOIT—flash of invisible text), best case they will flicker the text content when they arrive.

Offenders
warn(50)Total CSS size shouldn't be too bigcssSize

The total CSS transfer size is 98.7 kB and uncompressed size is 722.1 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://xelta.ai/_next/static/chunks/23rxafqu8inll.css91.1 KB671.7 KB
https://xelta.ai/_next/static/chunks/24aqi5k581skx.css3.9 KB24.5 KB
https://fonts.googleapis.com/css2...ogleapis.com/css21.4 KB9.0 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 32 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
error(80)Have a fast largest contentful paintlargestContentfulPaint

Largest contentful paint can be improved 3.872 s. It is in the Google Web Vitals needs improvement range, slower than 2.5 seconds.

Largest contentful paint is one of Google Web Vitals and reports the render time of the largest image or text block visible within the viewport, relative to when the page first started loading. To be fast according to Google, it needs to render before 2.5 seconds and results over 4 seconds is poor performance.

Offenders
error(90)Avoid Frontend single point of failuresspof

The page has 1 request inside of the head that can cause a SPOF (single point of failure). Load them asynchronously or move them outside of the document head.

A page can be stopped from loading in the browser if a single JavaScript, CSS, and in some cases a font, couldn't be fetched or is loading really slowly (the white screen of death). That is a scenario you really want to avoid. Never load 3rd-party components synchronously inside of the head tag.

Offenders
infoMake each CSS response smalloptimalCssSize

https://xelta.ai/_next/static/chunks/23rxafqu8inll.css size is 93.3 kB (93333) 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://xelta.ai/_next/static/chunks/23rxafqu8inll.css91.1 KB671.7 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

82
1 error1 warning3 info
infoAvoid unnecessary headersunnecessaryHeaders

There are 1 response that sets a p3p header. There are 6 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 120 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
error(50)Cumulative Layout ShiftcumulativeLayoutShift

You have a cumulative layout shift score (0.1416) that needs improvements. It is in the Google Web Vitals needs improvement range, shift higher than 0.1. You should manually check the filmstrip or video and check if it will affect the user.

Cumulative Layout Shift measures the sum total of all individual layout shift scores for unexpected layout shift that occur. The metric is measuring visual stability by quantify how often users experience unexpected layout shifts. It is one of Google Web Vitals.

warn(50)Avoid too many third party requeststhirdParty

The page do 12% requests to third party domains (15 requests and 589.2 kB). First party is 107 requests and 1.6 MB. The regex .*xelta.* was used to calculate first/third party requests.

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

infoDo not send too long headerslongHeaders

https://xelta.ai/_ne...ta.ai/_next/image has a header content-security-policy-report-only that is 804 characters long. https://xelta.ai/_ne...ta.ai/_next/image has a header report-to that is 606 characters long. https://xelta.ai/_ne...ta.ai/_next/image has a header content-security-policy-report-only that is 805 characters long. https://xelta.ai/_ne...ta.ai/_next/image has a header report-to that is 607 characters long. https://media.xelta....8-e3h1xyqxr7t.mp4 has a header report-to that is 619 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://xelta.ai/api...api/page-metadata has 31 headers.https://xelta.ai/api...nts/active-banner has 34 headers.https://xelta.ai/api...cms/announcements has 34 headers.https://xelta.ai/api...nt/public/pricing has 34 headers.https://xelta.ai/api...io_generation/all has 31 headers.https://xelta.ai/api...-pro-i2v-workflow has 31 headers.https://xelta.ai/api/cms/maintenance has 33 headers.https://xelta.ai/api/geo has 32 headers.

Avoid send too many response headers.

Offenders

Privacy advice

71
6 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 4 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 9% requests that are 3rd party (11 requests with a size of 588.7 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 10 survelliance requests and uses 6 survelliance tools. The page do 10 surveillance requests and uses 6 surveillance tools. The page do 2 utility requests and uses 2 utility tools. The page do 2 tag-manager requests and uses 1 tag-manager tool. 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(60)Use a strict Content-Security-Policy header to mitigate cross-site scripting (XSS) attacks.contentSecurityPolicyHeader

The policy allows 'unsafe-inline', which lets the browser execute inline scripts and styles directly from the page. Move to nonces or hashes plus 'strict-dynamic' so that inline injection cannot run.

A Content-Security-Policy response header tells the browser which sources of script, style, and other content are allowed. The most effective form is a strict CSP using nonces or hashes together with strict-dynamic; the worst is a missing header, with unsafe-inline and unsafe-eval close behind. https://web.dev/articles/strict-csp

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.

TitleKling 3.0 Pro Image-to-Video - AI ModelThe document title, shown in the browser tab and used by search results.
Layout viewport1355 × 3579 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 elements2,109Very large, slows layout and styleTotal HTML elements. Fewer means less for the browser to style, lay out and paint.
Avg DOM depth12How deeply elements are nested on average.
Max DOM depth25Deep treeThe deepest nesting on the page. Deep branches cost more style recalculation.
Iframes1Embedded documents. Each is a separate page the browser loads and renders.
Script tags69Number 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 storage1.1 KBData the page saved in localStorage, kept across visits.
Session storage565 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

8 technologies

Third-party tools

19 tools

Data collected using Third Party Web version 0.29.2.

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

Visual Metrics

Visual milestones

all times from navigation start
Speed Index2.57 show quickly the page looked done
First Visual Change0.97 sfirst paint reaches the screen
Last Visual Change6.92 sscreen stops changing · 5.95 s after first
≥99%
0.97 sFirst Visual Change
Visual Complete 85%4.88 s
Visual Complete 95% · Visual Complete 99%5.01 s
Last Visual Change6.92 s
Visual Readiness5.95 s· first to last change
02.0 s4.0 s6.0 s
Content milestones
Perception index
Visual progress
Visual progress at 0 s0.0s
Visual progress at 1.6 s1.6s
Visual progress at 2.6 s2.6s
Visual progress at 3.8 s3.8s
Visual progress at 4.6 s4.6s
Visual progress at 5.4 s5.4s
Visual progress at 6.2 s6.2s
Visual progress at 7 s7.0s
FCP0.98s
LCP3.87s
VC854.88s
Long tasks
0.0s1.4s2.8s4.2s5.6s7.0s

Google Web Vitals

734 msTTFB
Good
3.872 sLCP
Needs improvement
0.14CLS
Needs improvement
1.376 sTBT
Poor

Largest Contentful Paint

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

3.872 sLCP render time

Phase breakdown

  • TTFB734 ms
  • Resource load delay3.342 s
  • Resource load duration101 ms
  • Element render delay-305 ms

Element

Element type
<video>
Size (w × h)
43384
URL
https://media.xelta....9577416-su36m.mp4
Load time
0 ms

DOM path

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

0.142cumulative 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.

  • #10.106<div class="min-h-screen mt-[-96px] bg-[#000] text-white" style="opacity: 1;"></div>,<div id="playground-section" class="space-y-4 rounded-[12px] h-auto flex flex-col will-change-transform w-full lg:w-[465px] flex-shrink-0" style="opacity: 1;"></div>
    body > div#app-root > div:eq(1) > div:eq(1),body > div#app-root > div:eq(1) > div:eq(1) > div > div > div:eq(0) > div#playground-section
  • #20.017<div class="poppins_8788b8ac-module__bl1qya__variable roboto_serif_a531ab31-module__m0C-eG__variable font-montserrat roboto_5896e949-module__TqIgsq__variable anton_cc568568-module__F3nZXa__variable"></div>
    body > div#app-root > div:eq(1)
  • #30.008<div class="poppins_8788b8ac-module__bl1qya__variable roboto_serif_a531ab31-module__m0C-eG__variable font-montserrat roboto_5896e949-module__TqIgsq__variable anton_cc568568-module__F3nZXa__variable"></div>
    body > div#app-root > div:eq(1)
  • #40.007<div class="poppins_8788b8ac-module__bl1qya__variable roboto_serif_a531ab31-module__m0C-eG__variable font-montserrat roboto_5896e949-module__TqIgsq__variable anton_cc568568-module__F3nZXa__variable"></div>
    body > div#app-root > div:eq(1)
  • #50.003<div class="poppins_8788b8ac-module__bl1qya__variable roboto_serif_a531ab31-module__m0C-eG__variable font-montserrat roboto_5896e949-module__TqIgsq__variable anton_cc568568-module__F3nZXa__variable"></div>
    body > div#app-root > div:eq(1)
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 msMISS
cfEdge200 ms–
cfOrigin501 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.

Chrome internal metrics (CDP)33
Audio handlers0
Audio worklet processors0
Documents10
Frames9
JS event listeners1737
Layout objects2082
Media key sessions0
Media keys0
Nodes5404
Resources192
Context lifecycle state observers95
V8 per context datas3
Worker global scopes0
Uacss resources6
Rtc peer connections0
Resource fetchers10
Ad subframes0
Detached script states2
Array buffer contents14
Layout count35
Recalc style count388
Layout duration201
Recalc style duration293
Dev tools command duration11
Script duration1647
V8 compile duration3
Task duration3974
Task other duration1820
Thread time4
Process time8
JS heap used size26083068
JS heap total size39608320
First meaningful paint1656

PageXray

How the page is built.

HTTP versionHTTP/2.0
Total requests122
Total domains14
Transfer size2.1 MB
Content size7.4 MB
Missing compression0
Cookies101 third-party

Main document

status 200 · 0 redirects

https://xelta.ai/models/video_audio_generation/kling-3-0-pro-i2v-workflow

HeaderValue
alt-svch3=":443"; ma=86400
cache-controlprivate, max-age=604800, must-revalidate
cf-cache-statusMISS
cf-raya40c44fc6b09551d-DEL
content-encodingbr
content-security-policydefault-src 'self'; script-src 'self' 'unsafe-inline' 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: blob:; 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: blob:; 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
dateFri, 25 Sep 2026 19:00:03 GMT
expect-ctmax-age=86400, enforce
last-modifiedFri, 25 Sep 2026 19:00:03 GMT
link</_next/static/media/83afe278b6a6bb3c-s.p.2bn3s6zvc0dyp.woff2>; rel=preload; as="font"; crossorigin=""; type="font/woff2", </_next/static/chunks/23rxafqu8inll.css>; rel=preload; as="style", </_next/static/chunks/24aqi5k581skx.css>; rel=preload; as="style"
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=OQug%2Bmu3LlQqQNuSxKTjRKb1ee0vj3QnWQI3bMbDVj8GPSDCu6uPrjmnJQv59WDT6NhV0k7rexK88uGLpMndrjQ%2Bj1ima5DnsX4GEeVUymbSlnU8TDkBv742"}]}
servercloudflare
server-timingcfCacheStatus;desc="MISS" cfEdge;dur=200,cfOrigin;dur=501
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
11392.6%
202
10.8%
204
43.3%
206
43.3%

Largest assets on the page (by transfer size)

Top 20 of 122

Requests and sizes per content type

10 types

Transfer size2.1 MB

  • javascript61.6%
  • image21.6%
  • font8.2%
  • css4.5%
  • html1.5%
  • video1.1%
  • json1.00%
  • favicon0.44%
  • plain0.06%
  • other0.02%

Content size7.4 MB

  • javascript57.2%
  • video21.9%
  • css9.3%
  • image5.7%
  • html3.2%
  • font2.3%
  • json0.26%
  • favicon0.11%
  • other0.00%
  • plain0.00%

Requests122

  • javascript49.2%
  • image23.0%
  • json9.8%
  • font4.9%
  • plain4.9%
  • video3.3%
  • css2.5%
  • html0.82%
  • favicon0.82%
  • other0.82%
ContentHeader SizeTransfer SizeContent SizeRequests
html0 b32.6 KB246.1 KB1
css0 b96.4 KB705.2 KB3
javascript0 b1.3 MB4.3 MB60
image0 b466.8 KB436.1 KB28
font0 b176.6 KB171.5 KB6
favicon0 b9.6 KB8.3 KB1
other0 b447 B151 B1
json0 b21.5 KB20.1 KB12
plain0 b1.4 KB2 B6
video0 b24.6 KB1.6 MB4
Total0 b2.1 MB7.4 MB122

Data per domain

14 domains
DomainTotal download timeTransfer SizeContent SizeRequests
xelta.ai10.229 s1.3 MB3.8 MB101
fonts.googleapis.com206 ms1.4 KB9.0 KB1
static.cloudflareinsights.com170 ms10.1 KB29.6 KB1
fonts.gstatic.com23 ms8.1 KB7.6 KB1
media.xelta.ai3.512 s222.9 KB1.8 MB6
www.googletagmanager.com696 ms303.1 KB895.2 KB2
connect.facebook.net176 ms251.3 KB912.2 KB2
analytics.google.com229 msN/A0 b1
stats.g.doubleclick.net165 ms553 B0 b1
www.google.co.in165 ms408 B42 B1
mpc-prod-27-s6uit34pua-uk.a.run.app357 msN/A0 b1
us.i.posthog.com952 ms286 B15 B1
www.facebook.com77 msN/A0 b1
telemetry.matchbestsoftware.online190 ms286 B2 B2

Expires & last-modified statistics

typeminmedianmax
Expires0 seconds1 year1 year
Last modified0 seconds5 hours1 year

Requests loaded after onLoad event

72 requests

Includes requests done after load event end.

ContentTransfer SizeRequests
html0 b0
css0 b0
javascript826.7 KB26
image361.0 KB19
font128.9 KB5
favicon9.6 KB1
plain1.4 KB6
json19.6 KB11
video24.6 KB4
Total1.3 MB72

Requests loaded after onContentLoad

72 requests

Includes requests done after DOM content loaded.

ContentTransfer SizeRequests
html0 b0
css0 b0
javascript826.7 KB26
image361.0 KB19
font128.9 KB5
favicon9.6 KB1
plain1.4 KB6
json19.6 KB11
video24.6 KB4
Total1.3 MB72

Third party

Third party requests categorised by Third party web version 0.29.2.

Third-party requests21
Tools7
Categories7
Third-party cookies1

Categories

7 categories

Requests by category21

  • survelliance10 req · 6 tools47.6%
  • social3 req · 1 tool14.3%
  • cdn2 req · 1 tool9.5%
  • utility2 req · 2 tools9.5%
  • tag-manager2 req · 1 tool9.5%
  • analytics1 req · 1 tool4.8%
  • ad1 req · 1 tool4.8%

Third party requests and tools

7 categories
cdnGoogle Fonts2 requests · 1 tool
survellianceGoogle FontsGoogle Tag ManagerFacebook+ 3 more10 requests · 6 tools
utilityCloudflareOther Google APIs/SDKs2 requests · 2 tools
tag-managerGoogle Tag Manager2 requests · 1 tool
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.

  • 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

107 first · 15 third party

Transfer size2.1 MB

  • First party1.6 MB73.4%
  • Third party575.4 KB26.6%

Content size7.4 MB

  • First party5.6 MB75.6%
  • Third party1.8 MB24.4%

Requests122

  • First party10787.7%
  • Third party1512.3%

First party requests and sizes per content type

107 requests

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

ContentHeader SizeTransfer SizeContent SizeRequests
html0 b32.6 KB246.1 KB1
css0 b95.1 KB696.2 KB2
javascript0 b768.6 KB2.5 MB55
image0 b466.4 KB436.1 KB27
font0 b168.5 KB163.9 KB5
favicon0 b9.6 KB8.3 KB1
other0 b447 B151 B1
json0 b21.3 KB20.1 KB10
plain0 b571 B0 b1
video0 b24.6 KB1.6 MB4
TotalN/A1.6 MB5.6 MB107

Third party requests and sizes per content type

15 requests
ContentHeader SizeTransfer SizeContent SizeRequests
html0 b0 b0 b0
css0 b1.4 KB9.0 KB1
javascript0 b564.5 KB1.8 MB5
image0 b408 B42 B1
font0 b8.1 KB7.6 KB1
favicon0 b0 b0 b0
plain0 b839 B2 B5
json0 b286 B15 B2
TotalN/A575.4 KB1.8 MB15