Skip to content

Changes

https://github.com
Compared to previous audit · 25 weeks ago View previous audit

Madrid, Spain → Santa Clara, United States

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

35
New issues
37
Resolved
27
score changes
CategoryPreviousCurrentChange
CompositeB (80)B (83) +3.000
PerformanceC (73)C (77) +4.000
SecurityB (84)B (85) +1.000
AccessibilityB (81)B (86) +5.000
SEOA (92)A (94) +2.000
InfrastructureB (89)B (89)—
ComplianceD (67)C (75) +8.000
ContentB (80)C (78) -2.000
SustainabilityD (68)D (68)—
MetricPreviousCurrentChange
Performance 28002500 -300
Accessibility 97009600 -100
Best Practices 96009200 -400
SEO 100009200 -800
PWA 00—
Desktop Performance 54003700 -1700
Desktop Accessibility 97009600 -100
Desktop Best Practices 96009200 -400
Desktop SEO 100009200 -800
FCP 4.07 s12.99 s +8.92 s
LCP 16.60 s19.59 s +2.99 s
TBT 6.84 s5.92 s -919 ms
CLS 0.0000.000—
Desktop FCP 983 ms1.93 s +951 ms
Desktop LCP 2.01 s4.38 s +2.36 s
Desktop TBT 1.26 s743 ms -516 ms
Desktop CLS 0.0000.010 +0.010
TTFB †84 ms121 ms +36 ms
DNS †6 ms32 ms +26 ms
TLS †29 ms32 ms +2 ms
Connect †24 ms27 ms +4 ms
Total †156 ms201 ms +45 ms

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

CRITICAL 196 of 200 links are healthy content
CRITICAL Page weighs 12.2 MB (3.9 MB transferred) performance
CRITICAL Broken link: https://github.com/get_started?with=enterprise content
CRITICAL Broken link: https://github.com/signup?ref_cta=Sign+up&ref_loc=header+... content
CRITICAL 3 button(s) with no accessible text accessibility
WARNING 2 link(s) with generic text accessibility
WARNING https://github.githubassets.com/assets/landing-pag...: 2639ms CPU time performance
WARNING All 22 images use legacy formats (JPEG/PNG/GIF) content
WARNING https://github.githubassets.com/assets/primer-reac...: 121 KB unused (96%) performance
WARNING https://github.githubassets.com/assets/core-297401...: 84 KB unused (81%) performance
WARNING 1.12g CO2 — above the median website (0.60g) sustainability
WARNING 390 inline style attribute(s) detected security
WARNING Images are 1.3 MB — compress or use modern formats performance
WARNING Third-party scripts: 16232ms (86% of total) performance
WARNING 120 third-party resources (98% of weight) performance
WARNING 5 tap target(s) too small or too close to neighbors accessibility
WARNING https://github.com/: 1307ms CPU time performance
WARNING 1.12g CO2 per page view sustainability
WARNING https://github.githubassets.com/assets/a3k-2bc86f1...: 9315ms CPU time performance
WARNING https://github.githubassets.com/assets/landing-pag...: 485 KB unused (81%) performance
WARNING https://github.githubassets.com/assets/pb-25305857...: 83 KB unused (79%) performance
WARNING Unattributable: 1251ms CPU time performance
WARNING 122 HTTP requests — consider bundling or reducing performance
WARNING https://github.githubassets.com/assets/react-dom-c...: 1950ms CPU time performance
WARNING https://github.githubassets.com/assets/react-core-...: 67 KB unused (80%) performance
WARNING Third-party code accounts for 98% of page weight (3.8 MiB of 3.9 MiB) performance
WARNING Page weight 3.9 MB exceeds 1 MB target by 2.9 MB performance
WARNING 34 render-blocking stylesheet(s) -- recommended: <=3 performance
WARNING Title is only 13 characters — consider expanding seo
WARNING SRI adoption: 0/39 third-party resources protected (0%) security
WARNING 12 link(s) open in new tab without warning accessibility
WARNING JavaScript is 1.8 MB — consider code splitting or lazy loading performance
WARNING Total JS execution time is 18.8 s -- over the 3.5s budget performance
WARNING 2 images significantly larger than display size content
WARNING 9 images missing explicit width/height content
CRITICAL 1 control(s) without accessible label accessibility
CRITICAL Page weighs 13.4 MB (4.4 MB transferred) performance
CRITICAL 2 button(s) with no accessible text accessibility
CRITICAL Domain has EXPIRED infrastructure
WARNING 1.25g CO2 — above the median website (0.60g) sustainability
WARNING Unattributable: 1121ms CPU time performance
WARNING https://github.githubassets.com/assets/primer-reac...: 67 KB unused (55%) performance
WARNING Page weight 4.4 MB exceeds 1 MB target by 3.4 MB performance
WARNING 145 third-party resources (97% of weight) performance
WARNING https://github.com/: 2941ms CPU time performance
WARNING Heading level skipped: H1 → H3 (missing H2) accessibility
WARNING Images are 1.2 MB — compress or use modern formats performance
WARNING Third-party scripts: 15369ms (79% of total) performance
WARNING Multiple H1 headings (4 found) accessibility
WARNING https://github.githubassets.com/assets/react-core-...: 46 KB unused (70%) performance
WARNING 1.25g CO2 per page view sustainability
WARNING 115 inline style attribute(s) detected security
WARNING JavaScript is 1.7 MB — consider code splitting or lazy loading performance
WARNING https://images.ctfassets.net/8aevphvgewt8/6Qr8Snm4... is missing width/height — may cause layout shift performance
WARNING https://github.githubassets.com/assets/46752-7bd89...: 1201ms CPU time performance
WARNING SRI adoption: 0/80 third-party resources protected (0%) security
WARNING Title is only 6 characters — consider expanding seo
WARNING 3 images significantly larger than display size content
WARNING 11 link(s) open in new tab without warning accessibility
WARNING 147 HTTP requests — consider bundling or reducing performance
WARNING Third-party code accounts for 97% of page weight (4.3 MiB of 4.4 MiB) performance
WARNING https://github.githubassets.com/assets/chunk-39118...: 8293ms CPU time performance
WARNING https://github.githubassets.com/assets/react-lib-1...: 51 KB unused (59%) performance
WARNING https://github.githubassets.com/assets/48761-e0d70...: 48 KB unused (42%) performance
WARNING 198 of 200 links are healthy content
WARNING https://github.githubassets.com/assets/react-lib-1...: 2790ms CPU time performance
WARNING 1 link(s) open in a new tab without rel=noopener security
WARNING https://images.ctfassets.net/8aevphvgewt8/g1XhuDG7... is missing width/height — may cause layout shift performance
WARNING https://github.githubassets.com/assets/landing-pag...: 409 KB unused (93%) performance
WARNING 24 images missing explicit width/height content
WARNING 17 images missing alt text content
WARNING 1 font preload(s) missing `crossorigin` -- font will be downloaded twice performance
CRITICAL og:image is not reachable content
WARNING No Permissions-Policy header security
WARNING Skip link target(s) don't exist on page: #start-of-content accessibility
WARNING 3 unclassified cookie(s) set before any consent step compliance
WARNING Referrer-Policy: `origin-when-cross-origin` -- leaky -- origin sent cross-origin even on protocol downgrade security
WARNING External link from github.githubassets.com lacks integrity attribute security
WARNING External script from github.githubassets.com lacks integrity attribute security
WARNING Referrer-Policy has a weak value security
WARNING GDPR Article 13 disclosure coverage: 0 / 8 categories compliance
WARNING Broken link: https://github.githubassets.com/ content
WARNING Cross-Origin-Opener-Policy header is missing security
WARNING Cookie '_octo' is missing the HttpOnly flag security
WARNING Permissions-Policy header is missing security
WARNING Cross-Origin-Embedder-Policy header is missing security
WARNING Registrar lock is NOT enabled infrastructure
WARNING No accessibility statement detected compliance
WARNING Broken link: https://github.githubassets.com content
+ content-encoding gzip
+ x-github-edge-region switzerlandnorth
etag
W/"5e3f817fb487114e37fe73ee4d711ab0" → W/"d55f38cd598166b613729e5cf9ccfb12"
vary
X-PJAX, X-PJAX-Container, Turbo-Visit, Turbo-Frame, X-Requested-With, Accept-... → X-PJAX, X-PJAX-Container, Turbo-Visit, Turbo-Frame, X-Requested-With, X-GitHu...
set-cookie
_gh_sess=qAnm5puSwzWwI3HnQXZmwKYwJhlGnWGMuSoM32%2FgLUuPNy%2B6fHdL2GCv6H5REbz%... → _gh_sess=pztAPeHaEqlbmkT8Dof%2FM6TUE8rGzJ6mz%2B2sWVFZJ2Rt9y1tdVG8EJqH5T7czfGZ...
content-security-policy
default-src 'none'; base-uri 'self'; child-src github.githubassets.com github... → default-src 'none'; base-uri 'self'; child-src github.githubassets.com github...
x-github-request-id
CB28:359F71:11F3702:125A970:6A008D6C → E132:350A09:5855A:E4A77:6AEE5037

10 headers unchanged

+ Priority Hints Performance
− Tailwind CSS Framework
React Router v7.12.0 → v8

19 technologies unchanged

Looking ahead

+15 pts
B (83) Could reach A+ (98)
Performance +23Content +22Security +15Accessibility +14Compliance +14Sustainability +8Infrastructure +4SEO +4

Estimate — actual results may vary (52 issues to fix)

Website improvement report — Github

May 10, 2026 → November 6, 2026

B B 80 → 83 +3 pts

37

Resolved

35

New issues

17

Still remaining

Financial summary

Investment delivered

€7,622 in development time

Investment remaining

€8,628 to complete the remaining items

Ongoing risk

€1/month in ongoing exposure

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

Performance by category

MetricBeforeAfterChange
Overall score80 (B)83 (B)+3
Performance73 (C)77 (C)+4
Security84 (B)85 (B)+1
Accessibility81 (B)86 (B)+5
SEO92 (A)94 (A)+2
Infrastructure89 (B)89 (B)0
Compliance67 (D)75 (C)+8
Content80 (B)78 (C)-2
Sustainability68 (D)68 (D)0

Resolved (37)

  • 1.25g CO2 — above the median website (0.60g) (Sustainability)

    → Lower carbon footprint per page view

  • Unattributable: 1121ms CPU time (Performance)

    → Page loads faster for users

  • https://github.githubassets.com/assets/primer-reac...: 67 KB unused (55%) (Performance)

    → Page loads faster for users

  • Page weight 4.4 MB exceeds 1 MB target by 3.4 MB (Performance)

    → Page loads faster for users

  • 145 third-party resources (97% of weight) (Performance)

    → Page loads faster for users

  • https://github.com/: 2941ms CPU time (Performance)

    → Page loads faster for users

  • Heading level skipped: H1 → H3 (missing H2) (Accessibility)

    → Improved usability for assistive technology users

  • 1 control(s) without accessible label (Accessibility)

    → Improved usability for assistive technology users

  • Page weighs 13.4 MB (4.4 MB transferred) (Performance)

    → Page loads faster for users

  • Images are 1.2 MB — compress or use modern formats (Performance)

    → Page loads faster for users

  • Third-party scripts: 15369ms (79% of total) (Performance)

    → Page loads faster for users

  • Multiple H1 headings (4 found) (Accessibility)

    → Improved usability for assistive technology users

  • 2 button(s) with no accessible text (Accessibility)

    → Improved usability for assistive technology users

  • https://github.githubassets.com/assets/react-core-...: 46 KB unused (70%) (Performance)

    → Page loads faster for users

  • 1.25g CO2 per page view (Sustainability)

    → Lower carbon footprint per page view

…and 22 more resolved issue(s)

Recommended next steps (52)

  • Sprint 1

    196 of 200 links are healthy (Content)

  • Sprint 1

    Page weighs 12.2 MB (3.9 MB transferred) (Performance)

  • Sprint 1

    Broken link: https://github.com/get_started?with=enterprise (Content)

  • Sprint 1

    Broken link: https://github.com/signup?ref_cta=Sign+up&ref_loc=header+... (Content)

  • Sprint 1

    3 button(s) with no accessible text (Accessibility)

  • Sprint 1

    og:image is not reachable (Content)

  • Sprint 2

    2 link(s) with generic text (Accessibility)

  • Sprint 1

    https://github.githubassets.com/assets/landing-pag...: 2639ms CPU time (Performance)

  • Sprint 2

    All 22 images use legacy formats (JPEG/PNG/GIF) (Content)

  • Sprint 3

    https://github.githubassets.com/assets/primer-reac...: 121 KB unused (96%) (Performance)

  • Sprint 3

    https://github.githubassets.com/assets/core-297401...: 84 KB unused (81%) (Performance)

  • Sprint 2

    1.12g CO2 — above the median website (0.60g) (Sustainability)

  • Sprint 2

    390 inline style attribute(s) detected (Security)

  • Sprint 2

    Images are 1.3 MB — compress or use modern formats (Performance)

  • Sprint 3

    Third-party scripts: 16232ms (86% of total) (Performance)

…and 37 more recommended item(s)

Send Feedback