Mobile
1/1 runs
Perf
57
A11y
95
SEO
100
Best
96
LCP
โค 2.5 s
10.9 s
CLS
โค 0.1
0.000
TBT
โค 200 ms
457 ms
FCP
โค 1.8 s
1.9 s
TTFB
โค 800 ms
7 ms
SI
โค 3.4 s
5.9 s
Desktop
1/1 runs
Perf
99
A11y
95
SEO
100
Best
96
LCP
โค 2.5 s
801 ms
CLS
โค 0.1
0.000
TBT
โค 200 ms
104 ms
FCP
โค 1.8 s
361 ms
TTFB
โค 800 ms
6 ms
SI
โค 3.4 s
571 ms
Page weight
2.5 MB ยท 155 requests ยท third-party 1 KB
JavaScript1.4 MB57%
Images454 KB18%
CSS147 KB6%
Fonts226 KB9%
Failing performance checks
9 items- โ1.2 sReduce unused JavaScriptReduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.Est savings of 503ย KiBCovered by: Cut and defer JavaScript โ
- โ450 msMinimize main-thread workConsider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to minimize main-thread work3.5ย sCovered by: Cut and defer JavaScript โ
- โ1.1 sRender-blocking requestsRequests are blocking the page's initial render, which may delay LCP. Deferring or inlining can move these network requests out of the critical path.Est savings of 1,070ย msCovered by: Unblock the initial render โ
- โ650 msReduce JavaScript execution timeConsider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to reduce Javascript execution time.1.9ย sCovered by: Cut and defer JavaScript โ
- Forced reflowA forced reflow occurs when JavaScript queries geometric properties (such as offsetWidth) after styles have been invalidated by a change to the DOM state. This can result in poor performance. Learn more about forced reflows and possible mitigations.Covered by: Cut and defer JavaScript โ
- Network dependency treeAvoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.Covered by: Unblock the initial render โ
Show 3 more checks โShow fewer โ
- Reduce unused CSSReduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.Est savings of 38ย KiBCovered by: Unblock the initial render โ
- Legacy JavaScriptPolyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile Baseline features, unless you know you must support older browsers. Learn why most sites can deploy ES6+ code without transpilingEst savings of 26ย KiBCovered by: Cut and defer JavaScript โ
- Improve image deliveryReducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image sizeEst savings of 349ย KiBCovered by: Right-size and modernize images โ
Failing accessibility checks
1 item- `[user-scalable="no"]` is used in the `<meta name="viewport">` element or the `[maximum-scale]` attribute is less than 5.Disabling zooming is problematic for users with low vision who rely on screen magnification to properly see the contents of a web page. Learn more about the viewport meta tag.
Failing best-practices checks
1 item- Browser errors were logged to the consoleErrors logged to the console indicate unresolved problems. They can come from network request failures and other browser concerns. Learn more about this errors in console diagnostic audit
SEO Readiness (this page)
Title, meta, canonical, structured data, etc.
85/100
8 pass ยท 1 warn ยท 1 fail
- โHTTPSServed over HTTPS
- !Title tag8 chars โ aim for 30โ60
- โMeta description143 chars
- โCanonical URLhttps://vercel.com/about
- โOpen GraphComplete
- โTwitter Cardsummary_large_image
- โStructured data (JSON-LD)No JSON-LD on this page
- โH1 headingExactly one H1
- โLanguage declaration<html lang="en">
- โViewport metaSet
AI Readiness (this page)
Structured data, server-rendered content, semantic HTML.
81/100
6 pass ยท 1 warn ยท 1 fail
- โSnippet directivesNo nosnippet / max-snippet / noai restrictions
- โStructured data (validated)No JSON-LD โ answer engines have nothing structured to parse
- โServer-rendered content5086 words in initial HTML
- โSemantic HTMLUses main, header, footer, nav
- โHeading outline28 headings in a clean hierarchy
- โOpen Graph metadataComplete
- โConsent wallNo consent-manager wall detected
- !Author / Organization markupNo author meta tag or Person/Organization schema
Citation-friendliness
How citable this page looks to an LLM answer engine.
58/100
- โCanonical URLPage has a stable URL to cite
- โAuthor identityNo author meta or schema โ citation confidence drops without a named source
- โPublication dateNo publication or modification date in JSON-LD โ answer engines deprioritize undated content
- !Article schemaNo Article / NewsArticle / BlogPosting schema โ limits rich-snippet eligibility
- โContent depth5086 words โ substantial for a citation source
- โSemantic structureUses <main>, <article> or <header>
โ All 20 internal links we sampled on this page resolved.
Top third-party vendors
- Sentry1 KB