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https://e621.net

Performance

· 27 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
92
GRADE
A
FIX
0
REVIEW
6
PASS
17
INFO
4

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

Mobile Desktop
85
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
96
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.
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.

1.62 s

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

4.34 s

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

5 ms

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

0.004

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

1.62 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.

4.34 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
27
17 PASS 6 REVIEW
C
Image Optimization
Action
6 images, 0 KB saveable
REVIEW
6 images, 0 KB saveable
Warning::
https://e621.net/images/counter/2.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://e621.net/images/counter/5.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://e621.net/images/counter/6.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://e621.net/images/counter/1.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
6 images 117 KB
0 oversized -0 KB
6 legacy format
4 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

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
JS Execution Cost
665ms total JS execution
REVIEW
665ms total JS execution
Warning::
https://e621.net/: 356ms CPU time
Info::
Unattributable: 180ms CPU time
Info::
https://e621.net/vite/assets/jquery-CocJsJE4.js: 129ms CPU time
Info::
Third-party scripts: 180ms (27% of total)

Main Thread Breakdown

Other 33% Style & Layout 33% Script Evaluation 20% Parse HTML & CSS 8% Rendering 5%
ScriptTotalScriptingParse/CompileParty
https://e621.net/356ms9ms3ms1st
Unattributable180ms8ms0ms3rd
https://e621.net/vite/assets/jquery-CocJsJE4.js129ms117ms1ms1st
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
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.
B
HTTP Caching
max-age=0, private, must-revalidate
REVIEW
max-age=0, private, must-revalidate
Info::
Cache-Control header is set
Got: max-age=0, private, must-revalidate
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

max-age=0, private, must-revalidate

DirectiveValueMeaning
max-age0Cache for 0 seconds
private—Only browser cache, not CDN/proxy
must-revalidate—Must recheck with server after expiry
A+
Page Weight Budget
395 KB transferred, 35 requests
PASS
395 KB transferred, 35 requests
Info::
Page weighs 758 KB (395 KB transferred)
Info::
35 HTTP requests
Info::
Estimated 0.08 g CO2 per page load
395 KB / 2.4 MB budget
395 KB transferred
35 requests
0.08 g CO2 per page load
Fonts 131.8 KiB 33%
Images 117.5 KiB 30%
JavaScript 71.6 KiB 18%
CSS 39.4 KiB 10%
HTML 23.1 KiB 6%
Other 10.2 KiB 3%
Other 558 B 0%
Other 412 B 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Under budget
A
Third-Party Impact
29% third-party, 0 ms blocking
PASS
29% third-party, 0 ms blocking
Info::
Third-party code accounts for 29% of page weight (113.1 KiB of 394.5 KiB)
Info::
Third-party blocking time is low (0 ms)
71%
29%
First-party Third-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+
Font Loading
2 fonts (132 KB)
PASS
2 fonts (132 KB)
Info::
2 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

2

132 KB total

Render-blocking

0

of 2

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 4.0 s FCP 1.6 s LCP 4.3 shttps://e621.net/vite/assets/Roboto-Bold-DkD6_Jjp.woff2Roboto-Bold-DkD6_Jjp.woff2 https://e621.net/vite/assets/Roboto-Bold-DkD6_Jjp.woff2 — 67.0 KiB — 30 ms — font-display: swaphttps://e621.net/vite/assets/Roboto-Regular-OqL9vKsN.woff2Roboto-Regular-OqL9vKsN... https://e621.net/vite/assets/Roboto-Regular-OqL9vKsN.woff2 — 64.8 KiB — 32 ms — font-display: swap
Roboto-Bold-DkD6_Jjp.woff2 woff2 swap
Size 67 KB
Load time 30 ms
Start 402 ms
Risk FOUT — text flashes from fallback to web font
Roboto-Regular-OqL9vKsN... woff2 swap
Size 65 KB
Load time 32 ms
Start 402 ms
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)
A+
JS Bundles
19 scripts, 0 KB unused
PASS
19 scripts, 0 KB unused
0 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://e621.net/vite/assets/application-CR0CteGZ.js4 KB—✓1st
https://e621.net/vite/assets/v_static_home-DRQpqNa8.js1 KB—✓1st
https://e621.net/vite/assets/jquery-CocJsJE4.js32 KB—✓1st
https://e621.net/vite/assets/rails-ujs.esm-BePOoTYg.js4 KB—✓1st
https://e621.net/vite/assets/autocomplete-CC0SGcah.js4 KB—✓1st
https://e621.net/vite/assets/DTextFormatter-DhLFn6IQ.js4 KB—✓1st
https://e621.net/vite/assets/PerformanceTracker-JSZuPS0L.js4 KB—✓1st
https://e621.net/vite/assets/User-BMCoaatC.js8 KB—✓1st
https://e621.net/vite/assets/Page-CShD7Rm3.js0 KB—✓1st
https://e621.net/vite/assets/hotkeys-cAhvnau0.js2 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+
Main HTML Cache-Control
Main HTML max-age=0 (≤ 5min) is appropriate
PASS
Main HTML max-age=0 (≤ 5min) is appropriate
Info::
Main HTML max-age=0 (≤ 5min) is appropriate
Got: max-age=0, private, must-revalidate
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.
A+
Page Weight Inventory
35 resources · 395 KB · 0 KB savings available
PASS
35 resources · 395 KB · 0 KB savings available
Info::
Within 1MB page-weight target
Got: 395 KB
Info::
3 third-party resources (29% of weight)
35 resources · 394.5 KiB · 3 third-party Within 1MB page-weight target
Font 33% · 131.8 KiB
Image 32% · 127.7 KiB
JavaScript 18% · 71.6 KiB
CSS 10% · 39.4 KiB
Document 6% · 23.1 KiB
Other 0% · 970 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
A+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Cloudflare

Network Waterfall
35 requests over 1459ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s FCP 1.6 s LCP 4.3 shttps://e621.net// https://e621.net/ — 200 — 23.1 KiB — 240 ms — h2https://e621.net/vite/assets/styles-8Z3EW5Kg.css/vite/assets/styles-8Z3EW5Kg.css https://e621.net/vite/assets/styles-8Z3EW5Kg.css — 200 — 39.4 KiB — 81 ms — h2https://e621.net/vite/assets/application-CR0CteGZ.js/vite/assets/application-CR0CteGZ.j... https://e621.net/vite/assets/application-CR0CteGZ.js — 200 — 4.3 KiB — 27 ms — h2https://e621.net/vite/assets/v_static_home-DRQpqNa8.js/vite/assets/v_static_home-DRQpqNa8... https://e621.net/vite/assets/v_static_home-DRQpqNa8.js — 200 — 900 B — 28 ms — h2https://e621.net/vite/assets/jquery-CocJsJE4.js/vite/assets/jquery-CocJsJE4.js https://e621.net/vite/assets/jquery-CocJsJE4.js — 200 — 31.8 KiB — 32 ms — h2https://e621.net/vite/assets/rails-ujs.esm-BePOoTYg.js/vite/assets/rails-ujs.esm-BePOoTYg... https://e621.net/vite/assets/rails-ujs.esm-BePOoTYg.js — 200 — 4.0 KiB — 28 ms — h2https://e621.net/vite/assets/autocomplete-CC0SGcah.js/vite/assets/autocomplete-CC0SGcah.... https://e621.net/vite/assets/autocomplete-CC0SGcah.js — 200 — 4.2 KiB — 33 ms — h2https://e621.net/vite/assets/DTextFormatter-DhLFn6IQ.js/vite/assets/DTextFormatter-DhLFn6I... https://e621.net/vite/assets/DTextFormatter-DhLFn6IQ.js — 200 — 4.0 KiB — 45 ms — h2https://e621.net/vite/assets/PerformanceTracker-JSZuPS0L.js/vite/assets/PerformanceTracker-JSZ... https://e621.net/vite/assets/PerformanceTracker-JSZuPS0L.js — 200 — 4.3 KiB — 56 ms — h2https://e621.net/vite/assets/User-BMCoaatC.js/vite/assets/User-BMCoaatC.js https://e621.net/vite/assets/User-BMCoaatC.js — 200 — 8.2 KiB — 70 ms — h2https://e621.net/vite/assets/Page-CShD7Rm3.js/vite/assets/Page-CShD7Rm3.js https://e621.net/vite/assets/Page-CShD7Rm3.js — 200 — 281 B — 57 ms — h2https://e621.net/vite/assets/hotkeys-cAhvnau0.js/vite/assets/hotkeys-cAhvnau0.js https://e621.net/vite/assets/hotkeys-cAhvnau0.js — 200 — 1.8 KiB — 49 ms — h2https://e621.net/vite/assets/Offclick-rwbqT1o0.js/vite/assets/Offclick-rwbqT1o0.js https://e621.net/vite/assets/Offclick-rwbqT1o0.js — 200 — 494 B — 47 ms — h2https://e621.net/vite/assets/storage-8f65Q5YC.js/vite/assets/storage-8f65Q5YC.js https://e621.net/vite/assets/storage-8f65Q5YC.js — 200 — 1.8 KiB — 72 ms — h2https://e621.net/vite/assets/Flash-CqxLn9W4.js/vite/assets/Flash-CqxLn9W4.js https://e621.net/vite/assets/Flash-CqxLn9W4.js — 200 — 337 B — 71 ms — h2https://e621.net/vite/assets/Logger-DyhWrsd4.js/vite/assets/Logger-DyhWrsd4.js https://e621.net/vite/assets/Logger-DyhWrsd4.js — 200 — 728 B — 72 ms — h2https://e621.net/vite/assets/utility-DLA1pSg2.js/vite/assets/utility-DLA1pSg2.js https://e621.net/vite/assets/utility-DLA1pSg2.js — 200 — 602 B — 71 ms — h2https://e621.net/vite/assets/TaskQueue-o5iTDp4R.js/vite/assets/TaskQueue-o5iTDp4R.js https://e621.net/vite/assets/TaskQueue-o5iTDp4R.js — 200 — 2.1 KiB — 72 ms — h2https://e621.net/vite/assets/preload-helper-kaExG4hB.js/vite/assets/preload-helper-kaExG4h... https://e621.net/vite/assets/preload-helper-kaExG4hB.js — 200 — 714 B — 71 ms — h2https://e621.net/vite/assets/finalize-SAenth2O.js/vite/assets/finalize-SAenth2O.js https://e621.net/vite/assets/finalize-SAenth2O.js — 200 — 373 B — 72 ms — h2https://e621.net/images/counter/5.png/images/counter/5.png https://e621.net/images/counter/5.png — 200 — 816 B — 69 ms — h2https://e621.net/images/counter/6.png/images/counter/6.png https://e621.net/images/counter/6.png — 200 — 923 B — 70 ms — h2https://e621.net/images/counter/1.png/images/counter/1.png https://e621.net/images/counter/1.png — 200 — 761 B — 69 ms — h2https://e621.net/images/counter/2.png/images/counter/2.png https://e621.net/images/counter/2.png — 200 — 877 B — 69 ms — h2https://e621.net/cdn-cgi/scripts/5c5dd728/cloudflare-static/email-decode.min.js/cdn-cgi/scripts/5c5dd728/cloudflar... https://e621.net/cdn-cgi/scripts/5c5dd728/cloudflare-static/email-decode.min.js — 200 — 714 B — 42 ms — h2https://e621.net/manifest.json/manifest.json https://e621.net/manifest.json — 200 — 412 B — 968 ms — h2https://e621.net/vite/assets/pride-D95cuhud.svg/vite/assets/pride-D95cuhud.svg https://e621.net/vite/assets/pride-D95cuhud.svg — 200 — 1.7 KiB — 28 ms — h2https://e621.net/vite/assets/Roboto-Bold-DkD6_Jjp.woff2/vite/assets/Roboto-Bold-DkD6_Jjp.w... https://e621.net/vite/assets/Roboto-Bold-DkD6_Jjp.woff2 — 200 — 67.0 KiB — 30 ms — h2https://e621.net/vite/assets/Roboto-Regular-OqL9vKsN.woff2/vite/assets/Roboto-Regular-OqL9vKs... https://e621.net/vite/assets/Roboto-Regular-OqL9vKsN.woff2 — 200 — 64.8 KiB — 32 ms — h2https://op.dragonfru.it/api/trackop.dragonfru.it/api/track https://op.dragonfru.it/api/track — 204 — 0 B — 214 ms — h3
0 ms 1.0 s 2.0 s 3.0 s 4.0 s FCP 1.6 s LCP 4.3 shttps://e621.net// https://e621.net/ — 200 — 23.1 KiB — 240 ms — h2https://e621.net/vite/assets/styles-8Z3EW5Kg.css/vite/assets/styles-8Z3EW5Kg.css https://e621.net/vite/assets/styles-8Z3EW5Kg.css — 200 — 39.4 KiB — 81 ms — h2https://e621.net/vite/assets/application-CR0CteGZ.js/vite/assets/application-CR0CteGZ.j... https://e621.net/vite/assets/application-CR0CteGZ.js — 200 — 4.3 KiB — 27 ms — h2https://e621.net/vite/assets/v_static_home-DRQpqNa8.js/vite/assets/v_static_home-DRQpqNa8... https://e621.net/vite/assets/v_static_home-DRQpqNa8.js — 200 — 900 B — 28 ms — h2https://e621.net/vite/assets/jquery-CocJsJE4.js/vite/assets/jquery-CocJsJE4.js https://e621.net/vite/assets/jquery-CocJsJE4.js — 200 — 31.8 KiB — 32 ms — h2https://e621.net/vite/assets/rails-ujs.esm-BePOoTYg.js/vite/assets/rails-ujs.esm-BePOoTYg... https://e621.net/vite/assets/rails-ujs.esm-BePOoTYg.js — 200 — 4.0 KiB — 28 ms — h2https://e621.net/vite/assets/autocomplete-CC0SGcah.js/vite/assets/autocomplete-CC0SGcah.... https://e621.net/vite/assets/autocomplete-CC0SGcah.js — 200 — 4.2 KiB — 33 ms — h2https://e621.net/vite/assets/DTextFormatter-DhLFn6IQ.js/vite/assets/DTextFormatter-DhLFn6I... https://e621.net/vite/assets/DTextFormatter-DhLFn6IQ.js — 200 — 4.0 KiB — 45 ms — h2https://e621.net/vite/assets/PerformanceTracker-JSZuPS0L.js/vite/assets/PerformanceTracker-JSZ... https://e621.net/vite/assets/PerformanceTracker-JSZuPS0L.js — 200 — 4.3 KiB — 56 ms — h2https://e621.net/vite/assets/User-BMCoaatC.js/vite/assets/User-BMCoaatC.js https://e621.net/vite/assets/User-BMCoaatC.js — 200 — 8.2 KiB — 70 ms — h2https://e621.net/vite/assets/Page-CShD7Rm3.js/vite/assets/Page-CShD7Rm3.js https://e621.net/vite/assets/Page-CShD7Rm3.js — 200 — 281 B — 57 ms — h2https://e621.net/vite/assets/hotkeys-cAhvnau0.js/vite/assets/hotkeys-cAhvnau0.js https://e621.net/vite/assets/hotkeys-cAhvnau0.js — 200 — 1.8 KiB — 49 ms — h2https://e621.net/vite/assets/Offclick-rwbqT1o0.js/vite/assets/Offclick-rwbqT1o0.js https://e621.net/vite/assets/Offclick-rwbqT1o0.js — 200 — 494 B — 47 ms — h2https://e621.net/vite/assets/storage-8f65Q5YC.js/vite/assets/storage-8f65Q5YC.js https://e621.net/vite/assets/storage-8f65Q5YC.js — 200 — 1.8 KiB — 72 ms — h2https://e621.net/vite/assets/Flash-CqxLn9W4.js/vite/assets/Flash-CqxLn9W4.js https://e621.net/vite/assets/Flash-CqxLn9W4.js — 200 — 337 B — 71 ms — h2https://e621.net/vite/assets/Logger-DyhWrsd4.js/vite/assets/Logger-DyhWrsd4.js https://e621.net/vite/assets/Logger-DyhWrsd4.js — 200 — 728 B — 72 ms — h2https://e621.net/vite/assets/utility-DLA1pSg2.js/vite/assets/utility-DLA1pSg2.js https://e621.net/vite/assets/utility-DLA1pSg2.js — 200 — 602 B — 71 ms — h2https://e621.net/vite/assets/TaskQueue-o5iTDp4R.js/vite/assets/TaskQueue-o5iTDp4R.js https://e621.net/vite/assets/TaskQueue-o5iTDp4R.js — 200 — 2.1 KiB — 72 ms — h2https://e621.net/vite/assets/preload-helper-kaExG4hB.js/vite/assets/preload-helper-kaExG4h... https://e621.net/vite/assets/preload-helper-kaExG4hB.js — 200 — 714 B — 71 ms — h2https://e621.net/vite/assets/finalize-SAenth2O.js/vite/assets/finalize-SAenth2O.js https://e621.net/vite/assets/finalize-SAenth2O.js — 200 — 373 B — 72 ms — h2https://e621.net/images/counter/5.png/images/counter/5.png https://e621.net/images/counter/5.png — 200 — 816 B — 69 ms — h2https://e621.net/images/counter/6.png/images/counter/6.png https://e621.net/images/counter/6.png — 200 — 923 B — 70 ms — h2https://e621.net/images/counter/1.png/images/counter/1.png https://e621.net/images/counter/1.png — 200 — 761 B — 69 ms — h2https://e621.net/images/counter/2.png/images/counter/2.png https://e621.net/images/counter/2.png — 200 — 877 B — 69 ms — h2https://e621.net/cdn-cgi/scripts/5c5dd728/cloudflare-static/email-decode.min.js/cdn-cgi/scripts/5c5dd728/cloudflar... https://e621.net/cdn-cgi/scripts/5c5dd728/cloudflare-static/email-decode.min.js — 200 — 714 B — 42 ms — h2https://e621.net/manifest.json/manifest.json https://e621.net/manifest.json — 200 — 412 B — 968 ms — h2https://e621.net/vite/assets/pride-D95cuhud.svg/vite/assets/pride-D95cuhud.svg https://e621.net/vite/assets/pride-D95cuhud.svg — 200 — 1.7 KiB — 28 ms — h2https://e621.net/vite/assets/Roboto-Bold-DkD6_Jjp.woff2/vite/assets/Roboto-Bold-DkD6_Jjp.w... https://e621.net/vite/assets/Roboto-Bold-DkD6_Jjp.woff2 — 200 — 67.0 KiB — 30 ms — h2https://e621.net/vite/assets/Roboto-Regular-OqL9vKsN.woff2/vite/assets/Roboto-Regular-OqL9vKs... https://e621.net/vite/assets/Roboto-Regular-OqL9vKsN.woff2 — 200 — 64.8 KiB — 32 ms — h2https://op.dragonfru.it/api/trackop.dragonfru.it/api/track https://op.dragonfru.it/api/track — 204 — 0 B — 214 ms — h3https://static1.e621.net/data/mascots/37458ab297a2537d634aa5bafaa4be5b.pngstatic1.e621.net/data/mascots/37458... https://static1.e621.net/data/mascots/37458ab297a2537d634aa5bafaa4be5b.png — 200 — 112.5 KiB — 997 ms — h2https://e621.net/favicon.ico/favicon.ico https://e621.net/favicon.ico — 200 — 3.2 KiB — 27 ms — h2https://e621.net/favicon.svg/favicon.svg https://e621.net/favicon.svg — 200 — 1.6 KiB — 27 ms — h2https://op.dragonfru.it/api/trackop.dragonfru.it/api/track https://op.dragonfru.it/api/track — 200 — 558 B — 167 ms — h3https://e621.net/android-chrome-192x192.png/android-chrome-192x192.png https://e621.net/android-chrome-192x192.png — 200 — 5.5 KiB — 26 ms — h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
27% of JavaScript execution is third-party
First-party Third-party 180ms · 0KB · €2/mo
Unattributable
Other
Optional
Execution 180ms
Transfer 0 KB
Monthly Cost €2/mo

How third-party costs are calculated

Real-User Performance (CrUX)
Field metrics from the Chrome User Experience Report
INFO

Chrome User Experience (CrUX)

Real-user metrics from the Chrome UX Report (2026-04-11 — 2026-05-08)

LCP (p75)

1423 ms

91% good

INP (p75)

97 ms

93% good

CLS (p75)

0.000

99% good

FCP (p75)

1052 ms

TTFB (p75)

717 ms

This origin passes Core Web Vitals assessment
Image Optimization
7 images, 5 KB total, 0 KB wasted
INFO

Image Optimization Audit

Total Images

7

Total Size

5 KB

7 missing dimensions 7 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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