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https://bajza.sk

Performance

· 24 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
95
GRADE
A
FIX
2
REVIEW
2
PASS
19
INFO
1

Performance-focused optimization plan with CWV assessment, top offenders, and time estimates

Mobile Desktop
99
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
86
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
96
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
91
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

1.57 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

1.82 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

0 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.000

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

2.47 s

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

1.82 s

Page Load Progression

375 ms
750 ms
1.1 s
1.5 s
1.9 s
2.2 s
2.6 s
3.0 s
Checks
24
19 PASS 2 REVIEW 2 FIX
D
Third-Party Impact
Action
63% third-party, 0 ms blocking
FIX
63% third-party, 0 ms blocking
Warning::
Third-party code accounts for 63% of page weight (11.4 KiB of 18.1 KiB)
Info::
Third-party blocking time is low (0 ms)
37%
63%
First-party Third-party
F
HTTP Caching
Action
No cache headers
FIX
No cache headers
Warning::
No Cache-Control header found
Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.

No Cache-Control header

Adding a Cache-Control header can significantly improve repeat-visit performance.

B
Main HTML Cache-Control
No Cache-Control header on main HTML response
REVIEW
No Cache-Control header on main HTML response
Info::
Main HTML response has no Cache-Control header
Without an explicit Cache-Control, browsers fall back to heuristic caching (~10% of Last-Modified age). Set `Cache-Control: no-cache` or `max-age=300` for HTML to control freshness explicitly -- prevents stale auth state and SPA shell drift.
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Page Weight Budget
18 KB transferred, 7 requests
PASS
18 KB transferred, 7 requests
Info::
Page weighs 45 KB (18 KB transferred)
Info::
7 HTTP requests
Info::
Estimated 0.00 g CO2 per page load
18 KB / 2.4 MB budget
18 KB transferred
7 requests
0.00 g CO2 per page load
JavaScript 11.7 KiB 65%
CSS 3.1 KiB 17%
HTML 2.2 KiB 12%
Other 592 B 3%
Other 489 B 3%
0 2.4 MB 4.9 MB
Under budget
A+
Text Compression
All text resources are compressed
PASS
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+
Image Optimization
No images on this page
PASS
No images on this page
Info::
No images on this page
0 images 0 KB
0 oversized -0 KB
0 legacy format
0 missing dimensions CLS risk
A+
JS Execution Cost
198ms total JS execution
PASS
198ms total JS execution
Info::
Unattributable: 106ms CPU time
Info::
https://bajza.sk/: 92ms CPU time

Main Thread Breakdown

Other 52% Style & Layout 24% Script Evaluation 17% Parse HTML & CSS 3%
ScriptTotalScriptingParse/CompileParty
Unattributable106ms5ms0ms1st
https://bajza.sk/92ms3ms1ms1st
A+
Font Loading
No web fonts (system fonts)
PASS
No web fonts (system fonts)
Info::
No web fonts loaded — system fonts are fastest
No web fonts loaded — system fonts are optimal.
A+
JS Bundles
2 scripts, 0 KB unused
PASS
2 scripts, 0 KB unused
0 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://bajza.sk/static/assets/main-CPWASw-I.js0 KB—✓1st
https://static.cloudflareinsights.com/beacon.min.js/v833ccba57c9e4d2798f2e76cebdd09a1177817227644711 KB—✓3rd
A+
Resource Caching
All resources properly cached
PASS
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+
Critical Rendering Path
No render-blocking resources
PASS
No render-blocking resources
Info::
No render-blocking resources detected
A+
Resource Hints
2 hints, 0 missing preconnects
PASS
2 hints, 0 missing preconnects
Info::
Page uses 2 resource hint(s)

Current Resource Hints

preconnect
2
preload
—
dns-prefetch
—
prefetch
—

2 resource hints configured

A+
HTTP/3 (QUIC)
HTTP/3 advertised via Alt-Svc
PASS
HTTP/3 advertised via Alt-Svc
Info::
HTTP/3 (QUIC) is supported
First-load mobile users on cellular networks see meaningful latency improvements with HTTP/3. The QUIC transport collapses TLS + TCP handshakes into one and recovers faster from packet loss.
A+
Compression Algorithm
Main response uses brotli
PASS
Main response uses brotli
Info::
Main HTML response uses brotli (Content-Encoding: br)
Brotli is the best text-compression algorithm for general use, ~20% smaller than gzip on average (40% on smaller files). Modern browsers all support it.
A+
LCP Image Preload
LCP preload audit not available
PASS
LCP preload audit not available
Info::
LCP image preload audit not available for this scan
A+
Server-Timing Observability
3 Server-Timing entries advertised
PASS
3 Server-Timing entries advertised
Info::
Server-Timing header advertises 3 timing entries
A+
Server Response Intelligence
2 server-response signal(s) detected
PASS
2 server-response signal(s) detected
Info::
`Vary` header declared: accept-encoding
The page declares a `Vary` header, telling downstream caches which request headers the response varies on. Critical for content-negotiated responses (compression, language, cookies, device class).
Info::
No `ETag` or `Last-Modified` -- conditional GET not supported
Without either header, browsers can't issue conditional GETs and refresh always re-downloads the full response body even when nothing changed. Add `ETag: "<hash>"` (or `Last-Modified: <date>`) on cacheable responses; the server returns 304 Not Modified when the client's cached copy is still valid, saving bandwidth.
A
Page Weight Inventory
7 resources · 18 KB · 0 KB savings available
PASS
7 resources · 18 KB · 0 KB savings available
Info::
Within 1MB page-weight target
Got: 18 KB
Warning::
2 third-party resources (63% of weight)
7 resources · 18.1 KiB · 2 third-party Within 1MB page-weight target
JavaScript 65% · 11.7 KiB
CSS 17% · 3.1 KiB
Document 15% · 2.8 KiB
Other 3% · 489 B
A+
Render-Blocking Resources
No render-blocking resources detected
PASS
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+
Third-Party Resources
No third-party resources detected
PASS
No third-party resources detected
A+
JavaScript Blocking
No render-blocking JS or document.write usage detected
PASS
No render-blocking JS or document.write usage detected
Info::
No JavaScript blocking issues detected
A+
CSS Performance Depth
No CSS performance depth issues detected
PASS
No CSS performance depth issues detected
Info::
No CSS performance depth issues detected
Network Waterfall
7 requests over 379ms
INFO
0 ms 500 ms 1.0 s 1.5 s FCP 1.6 s LCP 1.8 shttps://bajza.sk// https://bajza.sk/ — 200 — 2.2 KiB — 90 ms — h2https://fonts.googleapis.com/css2?family=Fira+Code:wght@300..700display=swapfonts.googleapis.com/css2?family=Fi... https://fonts.googleapis.com/css2?family=Fira+Code:wght@300..700display=swap — -1 — 0 B — 167 ms — https://bajza.sk/static/assets/main-BhQZGvxs.css/static/assets/main-BhQZGvxs.css https://bajza.sk/static/assets/main-BhQZGvxs.css — 200 — 3.1 KiB — 44 ms — h2https://bajza.sk/static/assets/main-CPWASw-I.js/static/assets/main-CPWASw-I.js https://bajza.sk/static/assets/main-CPWASw-I.js — 200 — 351 B — 70 ms — h2https://static.cloudflareinsights.com/beacon.min.js/v833ccba57c9e4d2798f2e76cebdd09a11778172276447static.cloudflareinsights.com/beaco... https://static.cloudflareinsights.com/beacon.min.js/v833ccba57c9e4d2798f2e76cebdd09a11778172276447 — 200 — 11.4 KiB — 85 ms — h2https://bajza.sk/cdn-cgi/rum?/cdn-cgi/rum? https://bajza.sk/cdn-cgi/rum? — 204 — 489 B — 29 ms — h3https://bajza.sk/static/favicon.svg/static/favicon.svg https://bajza.sk/static/favicon.svg — 404 — 592 B — 80 ms — h3
HTML JavaScript CSS Images Fonts XHR/Fetch Other
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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