Skip to content

Changes

https://jestjs.io
Compared to previous audit · 17 minutes ago View previous audit

Singapore, Singapore → Amsterdam, Netherlands

These audits ran from different locations. Timing metrics (TTFB, DNS, TLS) may reflect network path differences rather than site changes.

10
New issues
15
Resolved
15
score changes
CategoryPreviousCurrentChange
CompositeC (76)C (76)—
PerformanceB (80)B (80)—
SecurityD (59)D (59)—
AccessibilityD (68)D (68)—
SEOA (95)A (93) -2.000
InfrastructureA (95)A (92) -3.000
ComplianceB (81)B (81)—
ContentC (75)C (76) +1.000
SustainabilityA (94)A (94)—
MetricPreviousCurrentChange
Performance 56006100 +500
Accessibility 91009100—
Best Practices 96009600—
SEO 83008300—
PWA 00—
Desktop Performance 96009600—
Desktop Accessibility 85008500—
Desktop Best Practices 96009600—
Desktop SEO 75007500—
FCP 1.11 s1.07 s -39 ms
LCP 6.99 s7.09 s +102 ms
TBT 877 ms578 ms -299 ms
CLS 0.0000.000—
Desktop FCP 331 ms314 ms -17 ms
Desktop LCP 1.38 s1.35 s -31 ms
Desktop TBT 73 ms30 ms -43 ms
Desktop CLS 0.0000.000—
TTFB †69 ms273 ms +204 ms
DNS †7 ms242 ms +235 ms
TLS †12 ms10 ms -2 ms
Connect †1 ms1 ms +0 ms
Total †74 ms274 ms +200 ms

† Timing metrics may vary by worker location and do not necessarily indicate site changes.

Projected vs. Actual

Previous
C 76
Projected
A 95
Actual
C 76
Fell short of projection
15 issues resolved since last audit
41 issues remaining
Resolving remaining issues could reach A

Estimate — actual results may vary

WARNING https://jestjs.io/: 2604ms CPU time performance
WARNING Title is only 4 characters — consider expanding seo
WARNING 41 link(s) open in new tab without warning accessibility
WARNING https://www.googletagmanager.com/gtag/js?id=UA-443...: 277ms CPU time performance
WARNING 102 of 104 links are healthy content
WARNING Unattributable: 524ms CPU time performance
WARNING No privacy policy link detected compliance
WARNING https://jestjs.io/assets/js/main.17432a57.js: 1242ms CPU time performance
WARNING DNS resolution is slow (5114 ms) infrastructure
WARNING Domain expires in 82 days infrastructure
CRITICAL Domain has EXPIRED infrastructure
WARNING https://www.googletagmanager.com/gtag/js?id=UA-443...: 317ms CPU time performance
WARNING Unattributable: 711ms CPU time performance
WARNING Skip link target(s) don't exist on page: #__docusaurus_skipToContent_fallback accessibility
WARNING https://www.googletagmanager.com/gtag/js?id=G-9V0L...: 310ms CPU time performance
WARNING Page weight 1.6 MB exceeds 1 MB target by 647 KB performance
WARNING No meta description tag found seo
WARNING GDPR Article 13 disclosure coverage: 0 / 8 categories compliance
WARNING https://jestjs.io/assets/js/main.17432a57.js: 1843ms CPU time performance
WARNING 113 of 116 links are healthy content
WARNING https://jestjs.io/: 3957ms CPU time performance
WARNING DNS resolution is slow (271 ms) infrastructure
WARNING No accessibility statement detected compliance
WARNING 42 link(s) open in new tab without warning accessibility
WARNING Broken link: https://HP439UUSOL-dsn.algolia.net content
CRITICAL Broken link: https://jest-archive-august-2023.netlify.app/docs/29.6/ge... content
CRITICAL No Content-Security-Policy header found security
CRITICAL No H1 heading found accessibility
CRITICAL No <main> landmark found accessibility
CRITICAL 4 image(s) missing alt attribute accessibility
CRITICAL Content-Security-Policy header is missing security
WARNING X-Content-Type-Options header is missing security
WARNING External script from www.googletagmanager.com lacks integrity attribute security
WARNING Cross-Origin-Embedder-Policy header is missing security
WARNING Images are 1.0 MB — compress or use modern formats performance
WARNING https://jestjs.io/img/logos/airbnb.png is missing width/height — may cause layout shift performance
WARNING https://jestjs.io/img/logos/facebook.png is missing width/height — may cause layout shift performance
WARNING https://jestjs.io/img/logos/spotify.png is missing width/height — may cause layout shift performance
WARNING Permissions-Policy header is missing security
WARNING https://jestjs.io/img/openjs_foundation-logo-horiz... is missing width/height — may cause layout shift performance
WARNING https://jestjs.io/img/logos/instagram.png is missing width/height — may cause layout shift performance
WARNING https://www.googletagmanager.com/gtag/js?id=UA-443...: 63 KB unused (51%) performance
WARNING Referrer-Policy header is missing security
WARNING Cross-Origin-Opener-Policy header is missing security
WARNING No DMARC record found security
WARNING No Permissions-Policy header security
WARNING Broken link: https://www.googletagmanager.com content
WARNING Missing og:description content
WARNING No favicon.ico at site root accessibility
WARNING External script from www.google-analytics.com lacks integrity attribute security
WARNING https://jestjs.io/img/logos/twitter.png is missing width/height — may cause layout shift performance
WARNING https://jestjs.io/assets/js/main.17432a57.js: 33 KB unused (23%) performance
WARNING X-Frame-Options header is missing security
WARNING https://www.googletagmanager.com/gtag/js?id=G-9V0L...: 63 KB unused (43%) performance
WARNING HSTS is missing includeSubDomains security
WARNING https://jestjs.io/img/logos/nyt.png is missing width/height — may cause layout shift performance
x-nf-request-id
01KNCVVVJN6WSEG55DWKS9WXZD → 01KNCWTTSAREQPSCRW05Z1K7ET

7 headers unchanged

Technology stack unchanged

12 technologies unchanged

Looking ahead

+19 pts
C (76) Could reach A (95)
Accessibility +30Security +30Performance +20Content +18Infrastructure +8Compliance +4SEO +4

Estimate — actual results may vary (41 issues to fix)

Website improvement report — Jestjs

April 4, 2026 → April 4, 2026

C C 76 → 76 0 pts

15

Resolved

10

New issues

31

Still remaining

Financial summary

Investment delivered

$1,050 in development time

Investment remaining

$4,575 to complete the remaining items

Ongoing risk

$0/month in ongoing exposure

Figures are estimates based on local developer hourly rate, industry CPC, and regulatory fine ranges.

Performance by category

MetricBeforeAfterChange
Overall score76 (C)76 (C)0
Performance80 (B)80 (B)0
Security59 (D)59 (D)0
Accessibility68 (D)68 (D)0
SEO95 (A)93 (A)-2
Infrastructure95 (A)92 (A)-3
Compliance81 (B)81 (B)0
Content75 (C)76 (C)+1
Sustainability94 (A)94 (A)0

Resolved (15)

  • https://www.googletagmanager.com/gtag/js?id=UA-443...: 317ms CPU time (Performance)

    → Page loads faster for users

  • Unattributable: 711ms CPU time (Performance)

    → Page loads faster for users

  • Domain has EXPIRED (Infrastructure)

    → More reliable delivery

  • Skip link target(s) don't exist on page: #__docusaurus_skipToContent_fallback (Accessibility)

    → Improved usability for assistive technology users

  • https://www.googletagmanager.com/gtag/js?id=G-9V0L...: 310ms CPU time (Performance)

    → Page loads faster for users

  • Page weight 1.6 MB exceeds 1 MB target by 647 KB (Performance)

    → Page loads faster for users

  • No meta description tag found (SEO)

    → Better search engine visibility

  • GDPR Article 13 disclosure coverage: 0 / 8 categories (Compliance)

    → Reduced regulatory exposure

  • https://jestjs.io/assets/js/main.17432a57.js: 1843ms CPU time (Performance)

    → Page loads faster for users

  • 113 of 116 links are healthy (Content)

    → Stronger social sharing and on-page quality

  • https://jestjs.io/: 3957ms CPU time (Performance)

    → Page loads faster for users

  • DNS resolution is slow (271 ms) (Infrastructure)

    → More reliable delivery

  • No accessibility statement detected (Compliance)

    → Reduced regulatory exposure

  • 42 link(s) open in new tab without warning (Accessibility)

    → Improved usability for assistive technology users

  • Broken link: https://HP439UUSOL-dsn.algolia.net (Content)

    → Stronger social sharing and on-page quality

Recommended next steps (41)

  • Sprint 1

    Broken link: https://jest-archive-august-2023.netlify.app/docs/29.6/ge... (Content)

  • Sprint 2

    No Content-Security-Policy header found (Security)

  • Sprint 1

    No H1 heading found (Accessibility)

  • Sprint 1

    No <main> landmark found (Accessibility)

  • Sprint 2

    4 image(s) missing alt attribute (Accessibility)

  • Sprint 2

    Content-Security-Policy header is missing (Security)

  • Sprint 1

    https://jestjs.io/: 2604ms CPU time (Performance)

  • Sprint 1

    Title is only 4 characters — consider expanding (SEO)

  • Sprint 1

    41 link(s) open in new tab without warning (Accessibility)

  • Sprint 1

    https://www.googletagmanager.com/gtag/js?id=UA-443...: 277ms CPU time (Performance)

  • Sprint 1

    102 of 104 links are healthy (Content)

  • Sprint 1

    Unattributable: 524ms CPU time (Performance)

  • Sprint 2

    No privacy policy link detected (Compliance)

  • Sprint 1

    https://jestjs.io/assets/js/main.17432a57.js: 1242ms CPU time (Performance)

  • Sprint 2

    DNS resolution is slow (5114 ms) (Infrastructure)

…and 26 more recommended item(s)

Send Feedback