Page summary

https://stf.xelta.ai/ai-tool/portfolio-creation

Tested 2026-09-08 13:41:25 using Chrome 150.0.7871.46 (runtime settings)

SummaryWaterfallMetricsRenderingCoachPageXrayCPUThird party

This page is snappy to interact with, visually stable and follows best practices, but slow to paint, weak on user privacy and slow to respond from the server.

70 / 100
Coach overall
66 / 100
Performance
99 / 100
Best practice
66 / 100
Privacy

How it loaded →

0 → 13.508 s · median run
Frame at 0 ms
start
Frame at 10100 ms
10.100 s
Frame at 10700 ms
10.700 s
Frame at 11300 ms
11.300 s
Frame at 12900 ms
12.900 s
Frame at 13600 ms
Complete13.600 s
9.620 s
First Visual Change
12.122 s
Speed Index
13.139 s
Visual Complete 85%
13.508 s
Last Visual Change
TTFB1.773 sLCP13.112 sTBT25 msCLS0.00

What to act on · top recommendations

Have a fast first contentful paint

0 / 100

First contentful paint is poor (13.112 s). It is in the Google Web Vitals poor range, slower than 3 seconds.The page has a high time to first byte (TTFB) 1.772 s that you should look into to improve first contentful paint.

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.

Have a fast largest contentful paint

0 / 100

Largest contentful paint is poor 13.112 s. It is in the Google Web Vitals poor range, slower than 4 seconds.

Google Web Vitals

min · median · mean · max of 1 run
MetricMinMedianMeanMax
Time To First Byte (TTFB)1.773 s1.773 s1.773 s1.773 s
Largest Contentful Paint (LCP)13.112 s13.112 s13.112 s13.112 s
Cumulative Layout Shift (CLS)0000

Visual Metrics

min · median · mean · max of 1 run
MetricMinMedianMeanMax
First visual change9.620 s9.620 s9.620 s9.620 s
Last visual change13.508 s13.508 s13.508 s13.508 s
Speed index12.122 s12.122 s12.122 s12.122 s
Visual readiness3.888 s3.888 s3.888 s3.888 s
Visual complete 8513.139 s13.139 s13.139 s13.139 s
Visual complete 9513.139 s13.139 s13.139 s13.139 s
Visual complete 9913.139 s13.139 s13.139 s13.139 s

CPU

min · median · mean · max of 1 run
MetricMinMedianMeanMax
Total Blocking Time25 ms25 ms25 ms25 ms
Max Potential FID75 ms75 ms75 ms75 ms
CPU long tasks 3333
CPU last long task happens at13.234 s13.234 s13.234 s13.234 s

More metrics

min · median · mean · max of 1 run
MetricMinMedianMeanMax
First paint10.024 s10.024 s10.024 s10.024 s
Load event end12.856 s12.856 s12.856 s12.856 s

Waterfall

Run 1 SpeedIndex median

First paintFCPLCPDOMContentLoadedDOM interactiveLoadRender-blockingRedirectError

Rendering

Run 1 · median
0.000 s
0s2s4s6s8s10s12s14s

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

31 frames

Use --filmstrip.showAll to show all filmstrips.

Frame at 0 ms
0 ms
0 %
Frame at 9.600 s
9.600 s
0 %
Frame at 9.700 s
9.700 s
29 %
Frame at 9.800 s
9.800 s
29 %
Frame at 9.900 s
9.900 s
29 %
Frame at 10.000 s
10.000 s
29 %
Frame at 10.100 s
10.100 s
29 %
Frame at 10.200 s
10.200 s
29 %
Frame at 10.300 s
10.300 s
29 %
Frame at 10.400 s
10.400 s
29 %
Frame at 10.500 s
10.500 s
29 %
Frame at 10.600 s
10.600 s
29 %
Frame at 10.700 s
10.700 s
29 %
Frame at 10.800 s
10.800 s
29 %
Frame at 10.900 s
10.900 s
29 %
Frame at 11.000 s
11.000 s
29 %
Frame at 11.100 s
11.100 s
29 %
Frame at 11.200 s
11.200 s
29 %
Frame at 11.300 s
11.300 s
29 %
Frame at 11.400 s
11.400 s
29 %
Frame at 11.500 s
11.500 s
29 %
Frame at 11.600 s
11.600 s
29 %
Frame at 11.700 s
11.700 s
29 %
Frame at 11.800 s
11.800 s
29 %
Frame at 12.900 s
12.900 s
29 %
Frame at 13.100 s
13.100 s
29 %
Frame at 13.200 s
13.200 s
99 %
Frame at 13.300 s
13.300 s
99 %
Frame at 13.400 s
13.400 s
99 %
Frame at 13.500 s
13.500 s
99 %
Frame at 13.600 s
13.600 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?

The server dominated the wait. The first byte took 1.773 s (14 % of the time to First Contentful Paint). Nothing can render before it arrives, and Google Web Vitals considers a TTFB over 800 ms in need of improvement. See the request timing on the Waterfall tab. First paint landed at 13.112 s; the 3 render-blocking requests were done by 9.451 s and the remaining ~3.661 s is style and layout work.

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

Render blocking requests

3 requests · 90.6 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 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 1.773 s
1.312 s
701 B1.309 s
css · stf.xelta.ai
7.519 s
85.3 KB7.519 s
css · stf.xelta.ai
2.342 s
3.9 KB2.342 s
css · stf.xelta.ai
2.276 s
1.4 KB2.276 s
LCP resource
portfolioImage.svg — downloaded by 3.527 s, rendered at 13.112 s
1.584 s
0 b1.584 s
web font · stf.xelta.ai
7.434 s
65.1 KB7.434 s
web font · stf.xelta.ai
7.545 s
71.5 KB7.545 s
web font · stf.xelta.ai
7.348 s
37.3 KB7.348 s
03.278 s6.556 sFCP · LCP 13.112 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

66
5 errors12 warnings3 info
error(0)Have a fast first contentful paintfirstContentfulPaint

First contentful paint is poor (13.112 s). It is in the Google Web Vitals poor range, slower than 3 seconds.The page has a high time to first byte (TTFB) 1.772 s that you should look into to improve first contentful paint.

The First Contentful Paint (FCP) metric measures the time from when the page starts loading to when any part of the page content is rendered on the screen. For this metric, "content" refers to text, images (including background images), <svg> elements, or non-white <canvas> elements.

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.

error(0)Have a fast largest contentful paintlargestContentfulPaint

Largest contentful paint is poor 13.112 s. It is in the Google Web Vitals poor range, slower than 4 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
warn(0)Avoid redirecting the main documentdocumentRedirect

The main document gets redirected 1 time(s). Remove those redirect and make the page faster!

You should never ever redirect the main document, because it will make the page load slower for the user. Well, you should redirect the user if the user tries to use HTTP and there's an HTTPS version of the page. The coach checks for that. :)

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

The total JavaScript transfer size is 681.9 kB and the uncompressed size is 2.2 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://www.googletagmanager.com/gtag/js?id=G-CPG3NLBKHP185.8 KB564.5 KB
https://stf.xelta.ai/_next/static/chunks/3uwr3jqy3726u.js7.0 KB23.8 KB
https://stf.xelta.ai/cdn-cgi/scripts/7d0fa10a/cloudflare-static/rocket-loader.min.js4.4 KB12.0 KB
https://static.cloudflareinsights.com/beacon.min.js/v31edd6df95cf4e85bb4c19e7a9bdbcba178836298749510.1 KB29.6 KB
https://stf.xelta.ai/_next/static/chunks/03zjmohdh3e2g.js1.9 KB2.7 KB
https://stf.xelta.ai/_next/static/chunks/3_02fj_4bvcbw.js13.5 KB46.2 KB
https://stf.xelta.ai/_next/static/chunks/18_n__63mzo4i.js33.9 KB105.1 KB
https://stf.xelta.ai/_next/static/chunks/09xqj9p9n0t1m.js12.3 KB33.6 KB
https://stf.xelta.ai/_next/static/chunks/0kpe-264ent3a.js19.4 KB62.0 KB
https://stf.xelta.ai/_next/static/chunks/1n5pi6a27b-2u.js10.0 KB27.9 KB
https://stf.xelta.ai/_next/static/chunks/1s27zdch4c1sr.js15.8 KB63.5 KB
https://stf.xelta.ai/_next/static/chunks/40a5fbr-aqmo-.js8.8 KB30.0 KB
https://stf.xelta.ai/_next/static/chunks/01mcql2bdo3rb.js43.6 KB140.5 KB
https://stf.xelta.ai/_next/static/chunks/2qjn0reedr8ae.js42.4 KB141.9 KB
https://stf.xelta.ai/_next/static/chunks/0i254zfoitftd.js23.3 KB76.3 KB
https://stf.xelta.ai/_next/static/chunks/15_md7thjtf9y.js15.0 KB44.6 KB
https://stf.xelta.ai/_next/static/chunks/22y7ibv_77ort.js7.8 KB20.5 KB
https://stf.xelta.ai/_next/static/chunks/0hr8xag69xxbh.js7.6 KB20.9 KB
https://stf.xelta.ai/_next/static/chunks/0ohf9i13i0cs4.js10.0 KB25.8 KB
https://stf.xelta.ai/_next/static/chunks/1kgjkq7dn9_ak.js16.0 KB52.7 KB
https://stf.xelta.ai/_next/static/chunks/34w0w3r6g1nvx.js9.8 KB27.4 KB
https://stf.xelta.ai/_next/static/chunks/0qlw6oi1_u0t2.js7.4 KB30.9 KB
https://stf.xelta.ai/_next/static/chunks/3tj8fi972co-_.js10.7 KB37.2 KB
https://stf.xelta.ai/_next/static/chunks/0t4fo6dytm65n.js9.0 KB23.8 KB
https://stf.xelta.ai/_next/static/chunks/turbopack-24rje7f4aq8u8.js6.6 KB19.5 KB
https://stf.xelta.ai/_next/static/chunks/3zfboem_wpsry.js10.2 KB45.5 KB
https://stf.xelta.ai/_next/static/chunks/0j62xb9va9k4c.js70.7 KB225.2 KB
https://stf.xelta.ai/_next/static/chunks/15vtan82er6c4.js41.7 KB148.8 KB
https://stf.xelta.ai/_next/static/chunks/0b12ipf9obn1h.js11.5 KB33.2 KB
warn(10)Don't scale images in the browseravoidScalingImages

The page has 9 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(40)Avoid CPU Long TaskslongTasks

The page has 3 CPU long tasks with the total of 363 ms. The total blocking time is 25 ms and 2 long tasks before first contentful paint with total time of 288 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
warn(40)Avoid extra requests by setting cache headerscacheHeaders

The page has 6 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 7.8 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(50)Total CSS size shouldn't be too bigcssSize

The total CSS transfer size is 93.7 kB and uncompressed size is 686.7 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/2d1gbxt7sbqx3.css85.3 KB632.6 KB
https://stf.xelta.ai/_next/static/chunks/2d9-f2l59svdc.css1.4 KB2.0 KB
https://stf.xelta.ai/_next/static/chunks/178pt4rau30r7.css3.9 KB34.8 KB
https://fonts.googleapis.com/css2?family=Anton&display=swap923 B1.2 KB
warn(50)Total image size shouldn't be too bigimageSize

The page total image size is 1.7 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(70)Apply the right priority hints to the LCP imagelcpImageHints

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="Backlit Portfolio Portrait" decoding="async" data-nimg="fill" class="object-contain relative z-10 pointer-events-none" style="position:absolute;height:100%;width:100%;left:0;top:0;right:0;bottom:0;color:transparent" src="/hero/portfolioImage.svg">
warn(80)Don't use private headers on static contentprivateAssets

The page has 2 requests with private headers. 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 11 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(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
warn(90)Always compress text contentcompressAssets

The page has 1 request that are served uncompressed. You could save a lot of bytes by sending them compressed instead.

In the early days of the Internet there were browsers that didn't support compressing (gzipping) text content. They do now. Make sure you compress HTML, JSON, JavaScript, CSS and SVG. It will save bytes for the user; making the page load faster and use less bandwith.

Offenders
URLTransferContent
https://stf.xelta.ai/socialverse/portfolio-creation32.3 KB233.7 KB
infoMake each CSS response smalloptimalCssSize

https://stf.xelta.ai/_next/static/chunks/2d1gbxt7sbqx3.css size is 87.3 kB (87343) 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/2d1gbxt7sbqx3.css85.3 KB632.6 KB
error(90)Avoid missing and error requestsresponseOk

The page has 1 error response. The page has 1 response with code 401.

Your page should never request assets that return a 400 or 500 error. These requests are never cached. If that happens something is broken. Please fix it.

Offenders
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(98)Avoid using incorrect mime typesmimeTypes

The page has 2 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

Best practice advice

99
2 info
infoAvoid unnecessary headersunnecessaryHeaders

There are 2 responses that sets both a max-age and expires header. There are 1 response that sets a pragma no-cache header (that is a request header). There are 65 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...zbiuwnnoiok.woff2 has a header report-to that is 630 characters long.

Do not send response headers that are too long.

Offenders

Privacy advice

66
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 3 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
warn(0)Use a strict Content-Security-Policy header to mitigate cross-site scripting (XSS) attacks.contentSecurityPolicyHeader

Set a Content-Security-Policy header to mitigate cross-site scripting attacks. You can start with a Content-Security-Policy-Report-Only header, which only reports violations rather than blocking them.

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

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)Set a Permissions-Policy header to control which browser features the page can use.permissionsPolicyHeader

Set a Permissions-Policy header to control which browser features the page can use.

The Permissions-Policy response header (the successor to Feature-Policy) lets a site explicitly opt in or out of powerful browser features such as camera, microphone, geolocation, payment and clipboard. Setting a strict policy reduces the attack surface and limits what embedded third parties can do. https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Permissions-Policy

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

The page has 6% requests that are 3rd party (4 requests with a size of 201.5 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 3 survelliance requests and uses 3 survelliance tools. The page do 3 surveillance requests and uses 3 surveillance tools. The page do 1 tag-manager request and uses 1 tag-manager tool. The page do 1 utility request and uses 1 utility tool. The page do 1 analytics request and uses 1 analytics 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

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 Portfolio Creator | Build Professional Portfolios FastThe document title, shown in the browser tab and used by search results.
Layout viewport1358 × 2686 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 elements1,468Very large, slows layout and styleTotal HTML elements. Fewer means less for the browser to style, lay out and paint.
Avg DOM depth11How deeply elements are nested on average.
Max DOM depth16The deepest nesting on the page. Deep branches cost more style recalculation.
Iframes0No embedded documents on this page.
Script tags61Number 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 storage298 BData the page saved in localStorage, kept across visits.
Session storage0 bData kept in sessionStorage for this tab session only.
Connection type3GWhat 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

3 technologies

Third-party tools

10 tools

Data collected using Third Party Web version 0.29.2.

Cdn
  • Google Fonts
Survelliance
  • Google Fonts
  • Google Tag Manager
  • Google Analytics
Surveillance
  • Google Fonts
  • Google Tag Manager
  • Google Analytics
Tag-manager
  • Google Tag Manager
Utility
  • Cloudflare
Analytics
  • Google Analytics

Data from run 1

Visual Metrics

Visual milestones

all times from navigation start
Speed Index12.12 show quickly the page looked done
First Visual Change9.62 sfirst paint reaches the screen
Last Visual Change13.51 sscreen stops changing · 3.89 s after first
nothing painted yet
First Visual Change9.62 s
Visual Complete 85% · Visual Complete 95% · Visual Complete 99%13.14 s
Last Visual Change13.51 s
Visual Readiness3.89 s· first to last change
02.5 s5.0 s7.5 s10.0 s12.5 s
Content milestones
Perception index
Speed Index12.12 s
Visual progress
Visual progress at 0 s0.0s
Visual progress at 9.9 s9.9s
Visual progress at 10.4 s10.4s
Visual progress at 10.8 s10.8s
Visual progress at 11.2 s11.2s
Visual progress at 11.6 s11.6s
Visual progress at 13.2 s13.2s
Visual progress at 13.6 s13.6s
FCP13.11s
LCP13.11s
VC8513.14s
Long tasks
0.0s2.7s5.4s8.2s10.9s13.6s

Google Web Vitals

from run 1
1.773 sTTFB
Needs improvement
13.112 sFCP
Poor

Largest Contentful Paint

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

13.112 sLCP render time

Phase breakdown

  • TTFB1.773 s
  • Resource load delay146 ms
  • Resource load duration1.634 s
  • Element render delay9.560 s

Element

Element type
<img>
Size (w × h)
226842
URL
https://stf.xelta.ai...ortfolioImage.svg
Load time
12.888 s

DOM path

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

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
TTFB1.773 s
First Paint10.024 s
Fully loaded23.165 s

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–
cfOrigin102 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 requests65
Total domains8
Transfer size1.9 MB
Content size4.9 MB
Missing compression1
Cookies10 third-party

Main document

status 200 · 1 redirect

https://stf.xelta.ai/socialverse/portfolio-creation

HeaderValue
alt-svch3=":443"; ma=86400
cf-cache-statusDYNAMIC
cf-raya37e5ef3cc3392fa-BDQ
dateTue, 08 Sep 2026 13:41:28 GMT
expect-ctmax-age=86400, enforce
location/socialverse/portfolio-creation
nel{"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
referrer-policysame-origin strict-origin-when-cross-origin
refresh0;url=/socialverse/portfolio-creation
report-to{"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=2x5VlX3bTwkOPSM4hGv8%2B9x2Yhn7iPARsZWBgc%2BllGfZ8m2c7u2NLaPLK%2FZC1WVchEIdX%2FQG2g0GHKnBKGuVoB90a5Qj5ybuzMcRHlWrs5prAinnLyu1EQNKDCm8Ow%3D%3D"}]}
servercloudflare
server-timingcfCacheStatus;desc="DYNAMIC" cfEdge;dur=3,cfOrigin;dur=44
speculation-rules"/cdn-cgi/speculation"
strict-transport-securitymax-age=31536000; includeSubDomains; preload
x-content-type-optionsnosniff
x-frame-optionsSAMEORIGIN
x-xss-protection1; mode=block

Response codes

200
6092.3%
204
34.6%
308
11.5%
401
11.5%

Requests and sizes per content type

10 types

Transfer size1.9 MB

  • image43.3%
  • javascript34.2%
  • font15.4%
  • css4.7%
  • html1.7%
  • favicon0.46%
  • json0.13%
  • other0.04%
  • plain0.03%

Content size4.9 MB

  • javascript42.4%
  • image32.4%
  • css13.4%
  • font5.9%
  • html4.7%
  • svg1.1%
  • favicon0.17%
  • json0.03%
  • other0.00%

Requests63

  • javascript46.0%
  • font15.9%
  • image14.3%
  • css6.3%
  • other4.8%
  • json4.8%
  • plain3.2%
  • html1.6%
  • favicon1.6%
  • svg1.6%
ContentHeader SizeTransfer SizeContent SizeRequests
html0 b32.3 KB233.7 KB1
css0 b91.5 KB670.6 KB4
javascript0 b665.9 KB2.1 MB29
image0 b842.3 KB1.6 MB9
font0 b299.7 KB292.4 KB10
favicon0 b8.9 KB8.3 KB1
other0 b732 B151 B3
svg0 b0 b55.8 KB1
json0 b2.5 KB1.4 KB3
plain0 b588 B0 b2
Total0 b1.9 MB4.9 MB63

Data per domain

8 domains
DomainTotal download timeTransfer SizeContent SizeRequests
stf.xelta.ai188.372 s1.7 MB4.3 MB56
fonts.googleapis.com7.747 s923 B1.2 KB1
www.googletagmanager.com8.269 s185.8 KB564.5 KB1
static.cloudflareinsights.com9.334 s10.1 KB29.6 KB1
stb.xelta.ai11.701 s1.1 KB55 B2
analytics.google.com15.427 sN/A0 b1
devpmt.xelta.ai12.981 s743 B117 B2
cms-b.stg2.xelta.ai12.619 s575 B26 B1

Expires & last-modified statistics

typeminmedianmax
Expires0 seconds1 year1 year
Last modified54 minutes1 hour6 days

Requests loaded after onLoad event

16 requests

Includes requests done after load event end.

ContentTransfer SizeRequests
html0 b0
css0 b0
javascript0 b0
image172.7 KB8
font0 b0
favicon8.9 KB1
plain588 B2
other0 b2
json1.3 KB2
Total184.5 KB16

Requests loaded after onContentLoad

16 requests

Includes requests done after DOM content loaded.

ContentTransfer SizeRequests
html0 b0
css0 b0
javascript0 b0
image172.7 KB8
font0 b0
favicon8.9 KB1
plain588 B2
other0 b2
json1.3 KB2
Total184.5 KB16

CPU

https://stf.xelta.ai/_next/static/chunks/3uwr3jqy3726u.js is responsible for 71% of blocking time
82 ms of 115 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.

TBT25 ms
Max potential input delay75 ms
Total long tasks3
Total time363 ms
Last task at13.234 s
Before first paint0 ms0 tasks
Before FCP288 ms2 tasks
Before LCP288 ms2 tasks
After load363 ms3 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 frames6every frame ≥ 50 ms
Blocking time459.4 msacross all long frames — what hurts INP and TBT
Blocking before LCP188.8 msdelaying the largest paint — fix these first
Blocking after load358.8 msafter the load event — didn't delay page load
Input waiting1 framea real interaction was delayed (INP)

What to fix first

ScriptFramesTime runningBlocking (share by run time)Forced style & layoutTriggered by
3uwr3jqy3726u.js1135.3 ms82.5 ms–script tag
js3rd party2121.8 ms22.4 ms–script tag, timer or animation callback
rocket-loader.min.js17 ms7 ms–event handler
0j62xb9va9k4c.js218.3 ms3.5 ms–event handler

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 · 294.1 msat 22.920 s · after load
blocking 244.1 ms
  • Scripts & other work294.1 ms
  • Animation callbacks0 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.

Long animation frame #2 · 147.4 msat 12.849 s · before LCP
blocking 97.5 ms
  • Scripts & other work8.3 ms
  • Animation callbacks1.7 ms
  • Style & layout137.4 ms
  • Render0 ms
1 script ran during this frame
Ran for
7 ms
Started by
DOMWindow.onload
How it started
event handler
Position in source
character 8077 into the file (locate it via DevTools → Performance → the Long Animation Frames track)
Long animation frame #3 · 145.9 msat 13.009 s · before LCP
input was waitingblocking 88.2 ms
  • Scripts & other work144.7 ms
  • Animation callbacks1.1 ms
  • Style & layout0.1 ms
  • Render0 ms
1 script ran during this frame
Ran for
135.3 ms
How it started
script tag
Long animation frame #4 · 90.1 msat 13.220 s · after load
blocking 26.5 ms
  • Scripts & other work89.5 ms
  • Animation callbacks0.1 ms
  • Style & layout0.5 ms
  • Render0 ms
2 scripts ran during this frame
Ran for
11.8 ms
Started by
MessagePort.onmessage
How it started
event handler
Source function
z
Position in source
character 7856 into the file (locate it via DevTools → Performance → the Long Animation Frames track)
js3rd party
Ran for
75.7 ms
How it started
script tag
Long animation frame #5 · 7.592 sat 1.942 s · before LCP
blocking 3.1 ms
  • Scripts & other work7.574 s
  • Animation callbacks0.1 ms
  • Style & layout17.5 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.

1 more long frame carried no blocking time (nothing ran past the 50 ms threshold) — long, but harmless to INP and TBT.

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.

Top scripts blocking the main thread

4 of 4 scripts

Third party

Third party requests categorised by Third party web version 0.29.2.

Third-party requests7
Tools4
Categories5

Categories

5 categories

Requests by category7

  • survelliance3 req · 3 tools42.9%
  • cdn1 req · 1 tool14.3%
  • tag-manager1 req · 1 tool14.3%
  • utility1 req · 1 tool14.3%
  • analytics1 req · 1 tool14.3%

Third party requests and tools

5 categories

First party vs third party

61 first · 4 third party

Transfer size1.9 MB

  • First party1.7 MB89.9%
  • Third party196.8 KB10.1%

Content size4.9 MB

  • First party4.3 MB88.1%
  • Third party595.3 KB11.9%

Requests65

  • First party6193.8%
  • Third party46.2%

First party requests and sizes per content type

61 requests

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

ContentHeader SizeTransfer SizeContent SizeRequests
html0 b32.3 KB233.7 KB1
css0 b90.6 KB669.4 KB3
javascript0 b470.0 KB1.5 MB27
image0 b842.3 KB1.6 MB9
font0 b299.7 KB292.4 KB10
favicon0 b8.9 KB8.3 KB1
other0 b732 B151 B3
svg0 b0 b55.8 KB1
json0 b2.5 KB1.4 KB3
plain0 b588 B0 b1
TotalN/A1.7 MB4.3 MB61

Third party requests and sizes per content type

4 requests
ContentHeader SizeTransfer SizeContent SizeRequests
html0 b0 b0 b0
css0 b923 B1.2 KB1
javascript0 b195.9 KB594.1 KB2
image0 b0 b0 b0
font0 b0 b0 b0
favicon0 b0 b0 b0
plain0 b0 b0 b1
TotalN/A196.8 KB595.3 KB4