← Analyze a URL · Tested sites

www.jetbrains.com

Report from 8/8/2026, 12:34:58 PM https://www.jetbrains.com
Latest run · lab, cold cache
0
8/8/2026
28-day score · p75 · the standard
0
16 runs
CRR0%latest
SSD65%latest
TC601 toklatest
TTFUT13 ms28-day p75

Scored by v3 · source-of-truth hashes: score db860d6ac94e · thresholds e94f8b33e500 — verifiable against the canonical scorer.

The 28-day score is the p75 of nightly runs — the stable number to cite. Deterministic metrics (CRR/SSD/TC) show their latest value (they move only when the site changes); timing (TTFUT) and answer-fidelity (AF) are smoothed by 28-day p75 — the same lab-vs-field split Core Web Vitals uses. Synthetic daily measurement, not real-user field data.

Core Agent Vitals badge  Embed this badge

Show your agent-readiness score anywhere — it links back to this report.

[![Core Agent Vitals](https://agentvitals.dev/badge/jetbrains.com.svg)](https://agentvitals.dev/results?url=https%3A%2F%2Fwww.jetbrains.com)
<a href="https://agentvitals.dev/results?url=https%3A%2F%2Fwww.jetbrains.com"><img src="https://agentvitals.dev/badge/jetbrains.com.svg" alt="Core Agent Vitals" height="20"></a>
What AI tells your customers about youAgent confidence: LOW
🟡Business nameJetBrains · guessed from page text (no structured data)
✅CategoryOrganization
❌Pricenot found
❌Locationnot found
❌Hoursnot found
❌Productsnot found
🟡DescriptionJetBrains is a cutting-edge software vendor specializing in the creation of intelligent development tools, including IntelliJ IDEA – the leading Java IDE, and the Kotlin programming language. · guessed from page text (no structured data)

An agent is likely to fabricate missing details rather than say “I don’t know”. 1/7 applicable facts come from machine-readable structured data.

DesktopMobile
An agent recovered no usable content from this page without executing JavaScript.
0
Overall score
weighted CAV (0–100)
FAIL
0–4950–8990–100

Metrics

0%
CRR Content Recovery Poor
0.65
SSD Semantic Signal Density Good
601 tok
TC Token Cost Good
22 ms
TTFUT Time to First Useful Token N/A

Token Cost breakdown

Where the page's tokens go (≈7,888 across regions). 67% is non-content — chrome and boilerplate an agent pays for. Add landmark roles (main/nav/header/footer) so agents can skip it.

Content
33.1% · 2,611
Chrome (nav / header / footer)
47.8% · 3,772
Boilerplate (cookie / ad)
0% · 0
Other
19.1% · 1,505

Final screenshot

Final screenshot of https://www.jetbrains.com

Diagnostics

high CRR Content is hidden behind JavaScript

pre-JS raw HTML

Evidence100% of content requires JS
ImpactA non-rendering agent never sees the JS-injected content.
Effort1–4 h

Fix: Server-render or statically generate the main content so a non-JS agent still receives it; make client rendering a progressive enhancement, not the source of truth.

high TC 66.9% of tokens are non-content (boilerplate/chrome)

agent representation — token decomposition

EvidenceToken decomposition: content 33.1%, chrome 47.8%, boilerplate 0%, other 19.1%. Only 33.099999999999994% of the agent's tokens are real content.
ImpactAn agent pays for boilerplate on every request and has less context left for the real content.
Effort30–90 min

Fix: Strip repeated nav/header/footer/cookie chrome from the agent-visible output; wrap content in <main>/<article> so the extractor keeps signal and drops boilerplate.

Rendered profile: headless

Agent Discoverability 88/100 · Agent Ready

Access & discovery checks — separate from the gated CAV metrics above. Click an issue for business impact, what we measured, and how to fix. · Take the Agent Readiness course →

Agent files & endpoints

✗ llms.txt Absent at /llms.txt and /.well-known/llms.txt Learn →
✓ robots.txt (AI bots) Major AI bots allowed Learn →
✓ sitemap.xml Found at /sitemap.xml Learn →
✓ JSON-LD structured data Types: Organization, WebSite Learn →
~ agents.json Absent (emerging standard) Learn →
~ WebMCP endpoint Absent (emerging standard) Learn →
~ OpenAPI / API docs No OpenAPI/Swagger found Learn →

Issues (4)

✗ llms.txt present high impact Absent at /llms.txt and /.well-known/llms.txt

Business impact llms.txt is the robots.txt for AI: it tells agents what your site is, what matters, and where to find it. Without it AI guesses — and guessing means inaccurate recommendations and lost visibility.

What we measured We fetch /llms.txt and /.well-known/llms.txt and validate the spec (H1 title + a one-line blockquote summary). We also note /llms-full.txt (your full content as Markdown).

How to fix Create /llms.txt with a short summary + key pages; optionally /llms-full.txt with full content in Markdown.

Learn how to implement →

# Your Site
> One-line description for AI agents.

## Key pages
- /products — catalog
- /pricing — plans
- /docs — documentation

Spec: https://llmstxt.org

~ agents.json discovery low impact Absent (emerging standard)

Business impact agents.json describes what your site can DO for agents (services, endpoints, capabilities) — an emerging discovery standard. Early adopters get native agent integration.

What we measured We check /agents.json and /.well-known/agents.json for a valid configuration.

How to fix Publish /agents.json describing your site's capabilities and actions.

Learn how to implement →

Spec: https://github.com/wild-card-ai/agents-json

~ WebMCP endpoint low impact Absent (emerging standard)

Business impact WebMCP lets agents call actions on your site directly (book, buy, query) instead of scraping the DOM. Early adopters get native AI-agent interoperability.

What we measured We check /.well-known/webmcp and /webmcp.json for a valid actions array.

How to fix Add a WebMCP endpoint exposing your key actions to agents.

Learn how to implement →

Spec: https://webmcp.org

~ API documentation low impact No OpenAPI/Swagger found

Business impact Programmatic agents prefer a typed API. An OpenAPI/Swagger spec lets them integrate without scraping.

What we measured We probe /openapi.json, /swagger.json, /api-docs and /.well-known/openapi.json.

How to fix Publish an OpenAPI spec at a well-known path.

Learn how to implement →

Spec: https://www.openapis.org/

Passed audits (8)

✓ robots.txt allows AI bots✓ No CAPTCHA wall✓ No content-blocking cookie wall✓ Machine-readable prices✓ No login wall on public content✓ Structured data (JSON-LD)✓ XML sitemap present + fresh✓ Server response (TTFB)

Transport & Trust (SEC 1.0.0)

HTTPS, HSTS, CSP, sniffing, referrer and CORS posture. Diagnostic only — this does not affect the CAV score. A security header does not make a page more legible to an agent, so scoring it would reward a CDN toggle that changes nothing an agent can recover. We measure it and say so.

78Transport posture (0–100, unscored)
4pass
0warn
1fail
Per-header findings (6)
HeaderEvidence
✅ HTTPSserved over HTTPS
✅ HSTSmax-age=31536000;
❌ Content-Security-Policyno content-security-policy header
✅ X-Content-Type-Optionsnosniff
✅ Referrer-Policysame-origin
➖ CORS exposureno CORS headers on the document (normal for an HTML page)
Full profile — how to improve · unused JS · network · timing

How to improve

highSplit the heaviest unused bundlehighest leverage

common.aa1fe9ed6fa0a9f81ead.js — 1445 KiB transferred, 42.2% unused

EvidenceCDP JS coverage: 609 KiB of this bundle is never executed on load.
Impact~-609 KiB transfer; lower Token Cost + faster agent parse.
Effort30–90 min
FixDynamic-import() the below-the-fold parts of common.aa1fe9ed6fa0a9f81ead.js, or drop unused dependencies.
highBreak up long main-thread tasks

longest task 325 ms (10 total)

EvidenceMain thread blocked 325 ms by the longest task.
ImpactFaster interactivity + content settling.
Effort1–4 h
FixSplit heavy work, defer third-party scripts, move compute off the main thread.
mediumReduce layout shift

cumulative layout shift

EvidenceCLS is 0.108.
ImpactStable layout for render + screenshot.
Effort30–60 min
FixSet explicit width/height on images; reserve space for late-loading content.
mediumCut total transfer weight

9.5 MB total

Evidence9.5 MB transferred.
ImpactCheaper, faster fetch on slow links.
Effort1–3 h
FixEnable Brotli, serve WebP/AVIF images, defer non-critical resources.

Third-party impact

81 third-party requests · 1695 KiB (17.4% of transfer) · 1438 ms main-thread — code an agent must also fetch/run before your content settles. Fewer, lazier third-parties = faster, cheaper agent reads.

Third-party domainReqsTransferMain-thread
googletagmanager.com61027 KiB228 ms
facebook.net2233 KiB533 ms
tiktok.com4152 KiB62 ms
amazonaws.com163 KiB48 ms
cookiehub.eu346 KiB—
licdn.com239 KiB26 ms
clarity.ms427 KiB93 ms
nrich.ai520 KiB88 ms
bing.com416 KiB82 ms
quora.com215 KiB30 ms
ads-twitter.com114 KiB122 ms
redditstatic.com113 KiB95 ms

Wasted JavaScript (by bundle)

Transfer-accurate — each bundle's transfer size × its unused %, ranked by wasted bytes (the biggest code-splitting wins). Unused JS also inflates Token Cost (TC).

BundleTransferUnusedWasted
https://www.jetbrains.com/_assets/common.aa1fe9ed6fa0a9f81ead.js1445 KiB42.2%609 KiB
https://www.jetbrains.com/_assets/default-page.6d2cf77c31cec807f850.js213 KiB60.3%128 KiB
https://www.googletagmanager.com/gtag/js?id=AW-1071903267&cx=c&gtm=4e6831 3P157 KiB71.4%112 KiB
https://www.googletagmanager.com/gtm.js?id=GTM-NL29B334&gtm=4e6831 3P174 KiB49.6%86 KiB
https://www.googletagmanager.com/gtag/js?id=G-9J976DJZ68&cx=c&gtm=4e6831 3P182 KiB45%82 KiB
https://www.googletagmanager.com/gtag/js?id=G-M8TDRLXFQH&cx=c&gtm=4e6831 3P150 KiB52%78 KiB
https://www.googletagmanager.com/gtag/js?id=AW-963127096&cx=c&gtm=4e6831 3P157 KiB48.6%76 KiB
https://analytics.tiktok.com/i18n/pixel/static/main.MTAwMWEwYTFlMA.js 3P109 KiB66.9%73 KiB
https://www.googletagmanager.com/gtm.js?id=GTM-5P98 3P209 KiB32.8%68 KiB
https://connect.facebook.net/en_US/fbevents.js 3P104 KiB42.8%44 KiB
https://resources.jetbrains.com/storage/optly/26613100737.js128 KiB34.6%44 KiB
https://connect.facebook.net/signals/config/357569036421264?v=2.9.370&r=stable&domain=www.jetbrains.com&hme=589ca7d2e122c6385be4e33d0bc38dace8e88b62db3f4bee0e6f01d386858e70&ex_m=108%2C210%2C160%2C22%2C73%2C74%2C151%2C69%2C68%2C11%2C169%2C93%2C16%2C143%2C131%2C39%2C76%2C81%2C139%2C165%2C171%2C26%2C27%2C28%2C30%2C48%2C152%2C78%2C116%2C18%2C20%2C44%2C40%2C42%2C41%2C86%2C95%2C99%2C114%2C150%2C153%2C46%2C115%2C24%2C21%2C123%2C70%2C36%2C155%2C154%2C156%2C147%2C145%2C25%2C35%2C59%2C113%2C167%2C71%2C17%2C158%2C118%2C84%2C67%2C19%2C88%2C89%2C120%2C87%2C141%2C140%2C144%2C100%2C166%2C34%2C49%2C117%2C47%2C8%2C4%2C5%2C7%2C6%2C3%2C94%2C105%2C172%2C177%2C224%2C75%2C237%2C236%2C235%2C23%2C33%2C55%2C107%2C61%2C10%2C64%2C101%2C102%2C103%2C109%2C134%2C31%2C29%2C136%2C137%2C138%2C133%2C132%2C161%2C77%2C164%2C162%2C163%2C50%2C60%2C127%2C15%2C168%2C45%2C281%2C282%2C280%2C295%2C313%2C217%2C206%2C62%2C207%2C205%2C316%2C307%2C52%2C218%2C111%2C135%2C83%2C125%2C54%2C124%2C130%2C129%2C58%2C65%2C63%2C157%2C79%2C80%2C119%2C37%2C32%2C53%2C56%2C104%2C170%2C1%2C128%2C14%2C126%2C12%2C2%2C57%2C96%2C66%2C122%2C92%2C91%2C173%2C174%2C97%2C98%2C9%2C106%2C51%2C148%2C90%2C82%2C72%2C121%2C110%2C43%2C149%2C0%2C85%2C142%2C146%2C159%2C38%2C112%2C13%2C175 3P129 KiB30.3%39 KiB
https://capi-automation.s3.us-east-2.amazonaws.com/public/client_js/capiParamBuilder/clientParamBuilder.bundle.js 3P63 KiB49.9%32 KiB
https://cdn.cookiehub.eu/c2/0acea1b9.js 3P38 KiB59.8%23 KiB
https://www.jetbrains.com/_assets/banner-rotator.entry.816ee5c33b3e4e5a8f60.js25 KiB56.8%14 KiB

Network

161Requests
9729 KiBTransferred
35Scripts
17.4%3rd-party
10Long tasks
Image (73)
5865 KiB
Script (35)
3499 KiB
Font (2)
152 KiB
Stylesheet (5)
147 KiB
Other (5)
22 KiB
Fetch (26)
16 KiB
Document (4)
15 KiB
XHR (6)
10 KiB
Ping (4)
2 KiB
Manifest (1)
1 KiB
Heaviest requests (30)
URLTypeStatusTransfer
https://www.jetbrains.com/img/home-page/screenshots/rider.gifImage2003490 KiB
https://www.jetbrains.com/_assets/common.aa1fe9ed6fa0a9f81ead.jsScript2001445 KiB
https://www.jetbrains.com/_assets/www/img/home-page/teamcity-pipe.725efa6d54ebb255f324.pngImage200501 KiB
https://www.jetbrains.com/_assets/www/part/banner-section/air-banner/air-banner-background.abf20a853a51187fcc3f.pngImage200352 KiB
https://www.jetbrains.com/img/home-page/rider-main-window.pngImage200242 KiB
https://www.jetbrains.com/img/home-page/pycharm-main-window.pngImage200241 KiB
https://www.jetbrains.com/img/home-page/webstorm-main-window.pngImage200235 KiB
https://www.jetbrains.com/img/home-page/idea-main-window.pngImage200234 KiB
https://www.jetbrains.com/_assets/default-page.6d2cf77c31cec807f850.jsScript200213 KiB
https://www.googletagmanager.com/gtm.js?id=GTM-5P98Script200209 KiB
https://www.googletagmanager.com/gtag/js?id=G-9J976DJZ68&cx=c&gtm=4e6831Script200182 KiB
https://www.googletagmanager.com/gtm.js?id=GTM-NL29B334&gtm=4e6831Script200174 KiB
https://www.googletagmanager.com/gtag/js?id=AW-963127096&cx=c&gtm=4e6831Script200157 KiB
https://www.googletagmanager.com/gtag/js?id=AW-1071903267&cx=c&gtm=4e6831Script200157 KiB
https://www.googletagmanager.com/gtag/js?id=G-M8TDRLXFQH&cx=c&gtm=4e6831Script200150 KiB
https://www.jetbrains.com/_assets/www/part/banner-section/air-banner/onboarding-parallel-tasks.271c49a270814482ac23.pngImage200149 KiB
https://www.jetbrains.com/img/home-page/screenshots/pycharm.svgImage200147 KiB
https://connect.facebook.net/signals/config/357569036421264?v=2.9.370&r=stable&domain=www.jetbrains.com&hme=589ca7d2e122c6385be4e33d0bc38dace8e88b62db3f4bee0e6f01d386858e70&ex_m=108%2C210%2C160%2C22%2C73%2C74%2C151%2C69%2C68%2C11%2C169%2C93%2C16%2C143%2C131%2C39%2C76%2C81%2C139%2C165%2C171%2C26%2C27%2C28%2C30%2C48%2C152%2C78%2C116%2C18%2C20%2C44%2C40%2C42%2C41%2C86%2C95%2C99%2C114%2C150%2C153%2C46%2C115%2C24%2C21%2C123%2C70%2C36%2C155%2C154%2C156%2C147%2C145%2C25%2C35%2C59%2C113%2C167%2C71%2C17%2C158%2C118%2C84%2C67%2C19%2C88%2C89%2C120%2C87%2C141%2C140%2C144%2C100%2C166%2C34%2C49%2C117%2C47%2C8%2C4%2C5%2C7%2C6%2C3%2C94%2C105%2C172%2C177%2C224%2C75%2C237%2C236%2C235%2C23%2C33%2C55%2C107%2C61%2C10%2C64%2C101%2C102%2C103%2C109%2C134%2C31%2C29%2C136%2C137%2C138%2C133%2C132%2C161%2C77%2C164%2C162%2C163%2C50%2C60%2C127%2C15%2C168%2C45%2C281%2C282%2C280%2C295%2C313%2C217%2C206%2C62%2C207%2C205%2C316%2C307%2C52%2C218%2C111%2C135%2C83%2C125%2C54%2C124%2C130%2C129%2C58%2C65%2C63%2C157%2C79%2C80%2C119%2C37%2C32%2C53%2C56%2C104%2C170%2C1%2C128%2C14%2C126%2C12%2C2%2C57%2C96%2C66%2C122%2C92%2C91%2C173%2C174%2C97%2C98%2C9%2C106%2C51%2C148%2C90%2C82%2C72%2C121%2C110%2C43%2C149%2C0%2C85%2C142%2C146%2C159%2C38%2C112%2C13%2C175Script200129 KiB
https://resources.jetbrains.com/storage/optly/26613100737.jsScript200128 KiB
https://analytics.tiktok.com/i18n/pixel/static/main.MTAwMWEwYTFlMA.jsScript200109 KiB
https://www.jetbrains.com/_assets/common.e60128ad0953cebff3f1.cssStylesheet200106 KiB
https://connect.facebook.net/en_US/fbevents.jsScript200104 KiB
https://resources.jetbrains.com/storage/jetbrains-mono/v2.304/webfonts/JetBrainsMono-Bold.woff2Font20093 KiB
https://www.jetbrains.com/img/home-page/screenshots/idea.svgImage20083 KiB
https://www.jetbrains.com/img/home-page/screenshots/webstorm.svgImage20079 KiB
https://capi-automation.s3.us-east-2.amazonaws.com/public/client_js/capiParamBuilder/clientParamBuilder.bundle.jsScript20063 KiB
https://www.jetbrains.com/_assets/common-ui/styles/fonts/JetBrainsSans[wght].a651abb3bd10dc917802.woff2Font20059 KiB
https://www.jetbrains.com/img/home-page/teamcity-pipe.pngImage20042 KiB
https://analytics.tiktok.com/i18n/pixel/static/identify_ea043f1c.jsScript20040 KiB
https://cdn.cookiehub.eu/c2/0acea1b9.jsScript20038 KiB

Long tasks (>50 ms)

StartDuration
4291 ms325 ms
4989 ms217 ms
566 ms212 ms
4725 ms208 ms
358 ms206 ms
151 ms199 ms
2097 ms194 ms
866 ms176 ms
1914 ms167 ms
13299 ms163 ms
Analyzing…
running mobile + desktop · ~30s