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Changes

https://knihobot.cz
Compared to previous audit · 2 hours ago View previous audit

Amsterdam, Netherlands → Madrid, Spain

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

19
New issues
10
Resolved
14
score changes
CategoryPreviousCurrentChange
CompositeC (79)C (79)—
PerformanceC (77)C (77)—
SecurityC (78)C (78)—
AccessibilityB (82)B (82)—
SEOA (93)A (93)—
InfrastructureA (90)A (90)—
ComplianceD (58)D (58)—
ContentC (76)C (76)—
SustainabilityD (65)D (65)—
MetricPreviousCurrentChange
Performance 32003100 -100
Accessibility 93009300—
Best Practices 96009600—
SEO 1000010000—
PWA 00—
Desktop Performance 74006300 -1100
Desktop Accessibility 92008800 -400
Desktop Best Practices 1000010000—
Desktop SEO 1000010000—
FCP 3.65 s3.54 s -108 ms
LCP 16.86 s13.23 s -3.64 s
TBT 2.71 s9.49 s +6.78 s
CLS 0.0000.000—
Desktop FCP 761 ms587 ms -174 ms
Desktop LCP 1.56 s1.36 s -197 ms
Desktop TBT 446 ms1.89 s +1.44 s
Desktop CLS 0.0000.000—
TTFB †209 ms116 ms -93 ms
DNS †40 ms6 ms -34 ms
TLS †29 ms12 ms -17 ms
Connect †27 ms7 ms -20 ms
Total †237 ms125 ms -112 ms

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

CRITICAL Transfer efficiency: 46% sustainability
CRITICAL 1 non-essential cookie(s) set without consent banner compliance
WARNING https://c77.bookbot.com/_next/static/chunks/5581-5...: 138 KB unused (73%) performance
WARNING 6 render-blocking <script src> tag(s) without async/defer performance
WARNING https://c77.bookbot.com/_next/static/chunks/5803-4...: 1120ms CPU time performance
WARNING No privacy policy link detected compliance
WARNING Trackers detected but no cookie policy found compliance
WARNING Trackers detected but no privacy policy found compliance
WARNING https://c77.bookbot.com/_next/static/chunks/framew...: 6986ms CPU time performance
WARNING https://knihobot.cz/: 2742ms CPU time performance
WARNING https://www.googletagmanager.com/gtm.js?id=GTM-TF5...: 1156ms CPU time performance
WARNING 16 render-blocking stylesheet(s) -- recommended: <=3 performance
WARNING GDPR Article 13 disclosure coverage: 0 / 8 categories compliance
WARNING 4 tap target(s) too small or too close to neighbors accessibility
WARNING Third-party scripts: 13293ms (76% of total) performance
WARNING Unattributable: 1410ms CPU time performance
WARNING Total JS execution time is 17.4 s -- over the 3.5s budget performance
WARNING SRI adoption: 0/48 third-party resources protected (0%) security
WARNING Terms of Service not detected compliance
CRITICAL Transfer efficiency: 45% sustainability
WARNING External script from www.googletagmanager.com lacks integrity attribute security
WARNING https://knihobot.cz/: 719ms CPU time performance
WARNING Unattributable: 698ms CPU time performance
WARNING https://www.googletagmanager.com/gtm.js?id=GTM-TF5...: 458ms CPU time performance
WARNING SRI adoption: 0/49 third-party resources protected (0%) security
WARNING https://c77.bookbot.com/_next/static/chunks/framew...: 2704ms CPU time performance
WARNING https://c77.bookbot.com/_next/static/chunks/pages/...: 336ms CPU time performance
WARNING Third-party scripts: 4678ms (77% of total) performance
WARNING https://c77.bookbot.com/_next/static/chunks/5581-9...: 138 KB unused (73%) performance
CRITICAL 1 link(s) with no accessible text accessibility
CRITICAL 1 button(s) with no accessible text accessibility
CRITICAL Content-Security-Policy header is missing security
CRITICAL Cookie 'adonis-session' is missing the Secure flag security
CRITICAL No H1 heading found accessibility
WARNING No accessibility statement detected compliance
WARNING Broken link: https://rezised-images.knhbt.cz content
WARNING Cookie 'adonis-session' has no SameSite attribute security
WARNING No Permissions-Policy header security
WARNING 128 HTTP requests — consider bundling or reducing performance
WARNING Page weight 2.3 MB exceeds 1 MB target by 1.3 MB performance
WARNING 1 internal links have no anchor text seo
WARNING Cross-Origin-Opener-Policy header is missing security
WARNING 197 of 200 links are healthy content
WARNING HSTS max-age is too short (15724800s, should be ≥ 31536000s) security
WARNING 567 inline style attribute(s) detected security
WARNING Third-party code accounts for 98% of page weight (2.2 MiB of 2.3 MiB) performance
WARNING Cross-Origin-Embedder-Policy header is missing security
WARNING X-Powered-By header reveals technology stack security
WARNING 4 images significantly larger than display size content
WARNING 0.65g CO2 — above the median website (0.60g) sustainability
WARNING DMARC policy is none — monitoring only security
WARNING Skip navigation link is missing (WCAG 2.4.1) accessibility
WARNING https://www.googletagmanager.com/gtag/destination?...: 75 KB unused (47%) performance
WARNING No Open Graph meta tags found content
WARNING 1 link(s) open in a new tab without rel=noopener security
WARNING Registrar lock is NOT enabled infrastructure
WARNING JavaScript is 1.5 MB — consider code splitting or lazy loading performance
WARNING External link from c77.bookbot.com lacks integrity attribute security
WARNING X-Frame-Options header is missing security
WARNING Referrer-Policy header is missing security
WARNING https://www.googletagmanager.com/gtag/js?id=G-000&...: 68 KB unused (46%) performance
WARNING 121 third-party resources (98% of weight) performance
WARNING Permissions-Policy header is missing security
WARNING 6 of 7 <nav> elements are unlabeled accessibility
WARNING 6 link(s) open in new tab without warning accessibility
WARNING https://www.googletagmanager.com/gtag/js?id=G-N116...: 73 KB unused (40%) performance
WARNING Broken link: https://www.googletagmanager.com content
WARNING X-Content-Type-Options header is missing security
WARNING 1 image(s) with generic alt text accessibility
WARNING 1 images missing alt text content
WARNING External script from c77.bookbot.com lacks integrity attribute security
WARNING No name or short_name accessibility
WARNING Broken link: https://www.googleadservices.com content
WARNING Missing required property "name" for WebSite content
WARNING 14 images missing explicit width/height content
etag
"zbb5ylgst49kcn" → "46x64mqjo9kcp"
set-cookie
adonis-session=s%3AeyJtZXNzYWdlIjoiY2FnMXpsNzVvdXRmaTJlc3c2OG0yMmxrIiwicHVycG... → adonis-session=s%3AeyJtZXNzYWdlIjoia25sbWpxZ3R6d2Z3Yzg4eDMya3Y5NmVwIiwicHVycG...

6 headers unchanged

Technology stack unchanged

18 technologies unchanged

Looking ahead

+18 pts
C (79) Could reach A+ (97)
Performance +23Content +22Security +22Compliance +20Accessibility +18Sustainability +14Infrastructure +4SEO +4

Estimate — actual results may vary (65 issues to fix)

Website improvement report — Knihobot

September 8, 2026 → September 8, 2026

C C 79 → 79 0 pts

10

Resolved

19

New issues

46

Still remaining

Financial summary

Investment delivered

Kč15,950 in development time

Investment remaining

Kč119,075 to complete the remaining items

Ongoing risk

Kč13/month in ongoing exposure

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

Performance by category

MetricBeforeAfterChange
Overall score79 (C)79 (C)0
Performance77 (C)77 (C)0
Security78 (C)78 (C)0
Accessibility82 (B)82 (B)0
SEO93 (A)93 (A)0
Infrastructure90 (A)90 (A)0
Compliance58 (D)58 (D)0
Content76 (C)76 (C)0
Sustainability65 (D)65 (D)0

Resolved (10)

  • Transfer efficiency: 45% (Sustainability)

    → Lower carbon footprint per page view

  • External script from www.googletagmanager.com lacks integrity attribute (Security)

    → Reduced attack surface for visitors

  • https://knihobot.cz/: 719ms CPU time (Performance)

    → Page loads faster for users

  • Unattributable: 698ms CPU time (Performance)

    → Page loads faster for users

  • https://www.googletagmanager.com/gtm.js?id=GTM-TF5...: 458ms CPU time (Performance)

    → Page loads faster for users

  • SRI adoption: 0/49 third-party resources protected (0%) (Security)

    → Reduced attack surface for visitors

  • https://c77.bookbot.com/_next/static/chunks/framew...: 2704ms CPU time (Performance)

    → Page loads faster for users

  • https://c77.bookbot.com/_next/static/chunks/pages/...: 336ms CPU time (Performance)

    → Page loads faster for users

  • Third-party scripts: 4678ms (77% of total) (Performance)

    → Page loads faster for users

  • https://c77.bookbot.com/_next/static/chunks/5581-9...: 138 KB unused (73%) (Performance)

    → Page loads faster for users

Recommended next steps (65)

  • Sprint 1

    Transfer efficiency: 46% (Sustainability)

  • Sprint 2

    1 non-essential cookie(s) set without consent banner (Compliance)

  • Sprint 1

    1 link(s) with no accessible text (Accessibility)

  • Sprint 1

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

  • Sprint 2

    Content-Security-Policy header is missing (Security)

  • Sprint 1

    Cookie 'adonis-session' is missing the Secure flag (Security)

  • Sprint 1

    No H1 heading found (Accessibility)

  • Sprint 3

    https://c77.bookbot.com/_next/static/chunks/5581-5...: 138 KB unused (73%) (Performance)

  • Sprint 2

    6 render-blocking <script src> tag(s) without async/defer (Performance)

  • Sprint 1

    https://c77.bookbot.com/_next/static/chunks/5803-4...: 1120ms CPU time (Performance)

  • Sprint 2

    No privacy policy link detected (Compliance)

  • Sprint 2

    Trackers detected but no cookie policy found (Compliance)

  • Sprint 2

    Trackers detected but no privacy policy found (Compliance)

  • Sprint 1

    https://c77.bookbot.com/_next/static/chunks/framew...: 6986ms CPU time (Performance)

  • Sprint 1

    https://knihobot.cz/: 2742ms CPU time (Performance)

…and 50 more recommended item(s)

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