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Performance

· 22 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
87
GRADE
B
FIX
2
REVIEW
7
PASS
10
INFO
3

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

Mobile Desktop
86
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
84
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
100
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
92
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.

610 ms

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

610 ms

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.

0.209

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

1.83 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.

610 ms

Page Load Progression

474 ms
949 ms
1.4 s
1.9 s
2.4 s
2.8 s
3.3 s
3.8 s
Checks
22
10 PASS 7 REVIEW 2 FIX
D
Page Weight Budget
Action
2.1 MB transferred, 20 requests
FIX
2.1 MB transferred, 20 requests
Info::
Page weighs 2.1 MB (2.1 MB transferred)
Info::
Fonts are 1.0 MB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 1.0 MB
Info::
20 HTTP requests
Info::
Estimated 0.44 g CO2 per page load
2.1 MB / 2.4 MB budget
2.1 MB transferred
20 requests
0.44 g CO2 per page load
Fonts 1.0 MiB 49%
Images 992.0 KiB 46%
CSS 90.2 KiB 4%
HTML 5.7 KiB 0%
Other 1.1 KiB 0%
JavaScript 613 B 0%
0 2.4 MB 4.9 MB
Approaching limit

Subset fonts to include only used characters, or switch to system font stacks.

Why this matters

Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).

Source: web.dev font loading

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.

C
Image Optimization
Action
5 images, 0 KB saveable
REVIEW
5 images, 0 KB saveable
Warning::
https://blog.hypercrites.de/img/hy_watermark_wr.pn... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://blog.hypercrites.de/postimg/knuhp-exilant.... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://blog.hypercrites.de/postimg/f0.jpg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
5 images 992 KB
0 oversized -0 KB
5 legacy format
3 missing dimensions CLS risk

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

B
HTTP/3 (QUIC)
HTTP/3 not advertised
REVIEW
HTTP/3 not advertised
Info::
HTTP/3 (QUIC) is not advertised
HTTP/3 isn't advertised via Alt-Svc and the worker didn't negotiate h3. HTTP/3 reduces handshake latency (1-RTT instead of 2-3 RTTs) and is more resilient on lossy connections. Most modern CDNs (Cloudflare, Fastly, AWS CloudFront, Google Cloud CDN) support HTTP/3 with a single config switch -- consider enabling for mobile-heavy workloads.
C
Compression Algorithm
Action
Main response served uncompressed
REVIEW
Main response served uncompressed
Info::
Main HTML response has no Content-Encoding (uncompressed)
The main HTML document is served without compression. The Text Compression section above lists the broader picture; for the main response specifically, even gzip would shave ~70-80% off most text payloads.
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.
B
Server-Timing Observability
No Server-Timing header found
REVIEW
No Server-Timing header found
Info::
No Server-Timing header found
Server-Timing exposes backend timing breakdowns to browser DevTools (e.g., `db: 45ms; render: 120ms; cache: 2ms`). Useful for diagnosing slow pages without backend log access. Most modern frameworks (Next.js, Cloudflare Workers, Fastly) emit it automatically; absence on a managed platform usually means telemetry headers are stripped at the edge.
C
Page Weight Inventory
Action
20 resources · 2.1 MB · 0 KB savings available
REVIEW
20 resources · 2.1 MB · 0 KB savings available
Warning::
Page weight 2.1 MB exceeds 1 MB target by 1.1 MB
Got: 2.1 MB Expected: ≤ 1 MB
Info::
2 resources over 200KB
20 resources · 2.1 MiB · 0 third-party 1.1 MiB over 1MB target
Font 49% · 1.0 MiB
Image 46% · 993.1 KiB
CSS 4% · 90.2 KiB
Document 0% · 5.7 KiB
JavaScript 0% · 613 B
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Third-Party Impact
No third-party resources
PASS
No third-party resources
Info::
No third-party resources detected
No third-party resources detected — all resources are first-party.
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+
JS Execution Cost
170ms total JS execution
PASS
170ms total JS execution
Info::
https://blog.hypercrites.de/js/parallax.js: 120ms CPU time
Info::
Unattributable: 51ms CPU time
Info::
Third-party scripts: 51ms (30% of total)

Main Thread Breakdown

Other 53% Style & Layout 25% Script Evaluation 13% Rendering 7% Parse HTML & CSS 3%
ScriptTotalScriptingParse/CompileParty
https://blog.hypercrites.de/js/parallax.js120ms25ms0ms1st
Unattributable51ms1ms0ms3rd
A+
Font Loading
4 fonts (1048 KB)
PASS
4 fonts (1048 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

1048 KB total

Render-blocking

0

of 4

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 1.0 s 2.0 s 3.0 s FCP 610 ms LCP 610 mshttps://blog.hypercrites.de/css/fonts/artemis.woff2artemis.woff2 https://blog.hypercrites.de/css/fonts/artemis.woff2 — 4.8 KiB — 251 ms — font-display: swaphttps://blog.hypercrites.de/css/fonts/ShareTechMono-Regular.woffShareTechMono-Regular.woff https://blog.hypercrites.de/css/fonts/ShareTechMono-Regular.woff — 21.0 KiB — 251 ms — font-display: swaphttps://blog.hypercrites.de/css/fonts/MononokiNerdFontMono-Regular.woff2MononokiNerdFontMono-Re... https://blog.hypercrites.de/css/fonts/MononokiNerdFontMono-Regular.woff2 — 977.6 KiB — 1.6 s — font-display: swaphttps://blog.hypercrites.de/css/fonts/SUSE-Bold.woff2SUSE-Bold.woff2 https://blog.hypercrites.de/css/fonts/SUSE-Bold.woff2 — 44.8 KiB — 890 ms — font-display: swap
artemis.woff2 woff2 swap
Size 5 KB
Load time 251 ms
Start 2.1 s
Risk FOUT — text flashes from fallback to web font
ShareTechMono-Regular.woff woff swap
Size 21 KB
Load time 251 ms
Start 2.1 s
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
MononokiNerdFontMono-Re... woff2 swap
Size 978 KB
Load time 1.6 s
Start 2.1 s
Risk FOUT — text flashes from fallback to web font
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
SUSE-Bold.woff2 woff2 swap
Size 45 KB
Load time 890 ms
Start 2.1 s
Risk FOUT — text flashes from fallback to web font
Optimization checklist
  • Preload critical fonts (priority=high)
  • Use woff2 format for all fonts
  • Set font-display to swap, optional, or fallback
  • Subset large fonts (≤100 KB each)

Fixing the unchecked items could save ~495 KB and ~990 ms

A+
JS Bundles
1 scripts, 0 KB unused
PASS
1 scripts, 0 KB unused
0 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://blog.hypercrites.de/js/parallax.js1 KB—✓1st
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
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
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 Response Intelligence
1 server-response signal(s) detected
PASS
1 server-response signal(s) detected
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.
Network Waterfall
20 requests over 4204ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s FCP 610 ms LCP 610 mshttps://blog.hypercrites.de// https://blog.hypercrites.de/ — 200 — 5.7 KiB — 1.1 s — http/1.1https://blog.hypercrites.de/css/style.css?2026-04-28/css/style.css?2026-04-28 https://blog.hypercrites.de/css/style.css?2026-04-28 — 200 — 13.7 KiB — 231 ms — http/1.1https://blog.hypercrites.de/img/hy_watermark_wr.png/img/hy_watermark_wr.png https://blog.hypercrites.de/img/hy_watermark_wr.png — 200 — 913 B — 240 ms — http/1.1https://blog.hypercrites.de/postimg/knuhp-exilant.jpg/postimg/knuhp-exilant.jpg https://blog.hypercrites.de/postimg/knuhp-exilant.jpg — 200 — 91.0 KiB — 919 ms — http/1.1https://blog.hypercrites.de/postimg/f0.jpg/postimg/f0.jpg https://blog.hypercrites.de/postimg/f0.jpg — 200 — 722.1 KiB — 2.3 s — http/1.1https://blog.hypercrites.de/js/parallax.js/js/parallax.js https://blog.hypercrites.de/js/parallax.js — 200 — 613 B — 928 ms — http/1.1https://blog.hypercrites.de/css/webfonts/all.min.css/css/webfonts/all.min.css https://blog.hypercrites.de/css/webfonts/all.min.css — 200 — 74.2 KiB — 730 ms — http/1.1https://blog.hypercrites.de/css/fonts/artemis.css/css/fonts/artemis.css https://blog.hypercrites.de/css/fonts/artemis.css — 200 — 362 B — 432 ms — http/1.1https://blog.hypercrites.de/css/fonts/ShareTechMono.css/css/fonts/ShareTechMono.css https://blog.hypercrites.de/css/fonts/ShareTechMono.css — 200 — 415 B — 470 ms — http/1.1https://blog.hypercrites.de/css/fonts/suse.css/css/fonts/suse.css https://blog.hypercrites.de/css/fonts/suse.css — 200 — 768 B — 471 ms — http/1.1https://blog.hypercrites.de/css/fonts/mononoki.css/css/fonts/mononoki.css https://blog.hypercrites.de/css/fonts/mononoki.css — 200 — 389 B — 653 ms — http/1.1https://blog.hypercrites.de/css/fonts/handschrift.css/css/fonts/handschrift.css https://blog.hypercrites.de/css/fonts/handschrift.css — 200 — 431 B — 691 ms — http/1.1https://blog.hypercrites.de/img/background_light.jpg/img/background_light.jpg https://blog.hypercrites.de/img/background_light.jpg — 200 — 175.4 KiB — 485 ms — http/1.1https://blog.hypercrites.de/img/overlay.png/img/overlay.png https://blog.hypercrites.de/img/overlay.png — 200 — 2.6 KiB — 230 ms — http/1.1https://blog.hypercrites.de/css/fonts/artemis.woff2/css/fonts/artemis.woff2 https://blog.hypercrites.de/css/fonts/artemis.woff2 — 200 — 4.8 KiB — 251 ms — http/1.1https://blog.hypercrites.de/css/fonts/ShareTechMono-Regular.woff/css/fonts/ShareTechMono-Regular.wo... https://blog.hypercrites.de/css/fonts/ShareTechMono-Regular.woff — 200 — 21.0 KiB — 251 ms — http/1.1https://blog.hypercrites.de/css/fonts/MononokiNerdFontMono-Regular.woff2/css/fonts/MononokiNerdFontMono-Reg... https://blog.hypercrites.de/css/fonts/MononokiNerdFontMono-Regular.woff2 — 200 — 977.6 KiB — 1.6 s — http/1.1https://blog.hypercrites.de/css/fonts/SUSE-Bold.woff2/css/fonts/SUSE-Bold.woff2 https://blog.hypercrites.de/css/fonts/SUSE-Bold.woff2 — 200 — 44.8 KiB — 890 ms — http/1.1https://blog.hypercrites.de/img/favicon.png/img/favicon.png https://blog.hypercrites.de/img/favicon.png — 200 — 542 B — 220 ms — http/1.1https://blog.hypercrites.de/img/favicon-32.png/img/favicon-32.png https://blog.hypercrites.de/img/favicon-32.png — 200 — 572 B — 220 ms — http/1.1
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
30% of JavaScript execution is third-party
First-party Third-party 51ms · 0KB · €1/mo
Unattributable
Other
Optional
Execution 51ms
Transfer 0 KB
Monthly Cost €1/mo

How third-party costs are calculated

Image Optimization
3 images, 813 KB total, 778 KB wasted
INFO

Image Optimization Audit

Total Images

3

Total Size

813 KB

Oversized

2

Wasted

778 KB

3 missing dimensions 2 missing lazy loading
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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