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Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
86
GRADE
B
FIX
1
REVIEW
4
PASS
8
INFO
2

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

Mobile Desktop
91
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
88
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.

303 ms

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

515 ms

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

242 ms

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

0.016

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

981 ms

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

1.53 s

Page Load Progression

376 ms
753 ms
1.1 s
1.5 s
1.9 s
2.3 s
2.6 s
3.0 s
Checks
15
8 PASS 4 REVIEW 1 FIX
D
JS Bundles
Action
14 scripts, 457 KB unused
FIX
14 scripts, 457 KB unused
Warning::
https://justpaste.it/build/5.44b684b4.js: 244 KB unused (53%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://justpaste.it/build/827.7313dc7f.js: 159 KB unused (99%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://justpaste.it/build/6315.0562b539.js: 27 KB unused (81%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://justpaste.it/build/2179.4bcb849f.js: 26 KB unused (44%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 457 KB
457 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://justpaste.it/build/5.44b684b4.js461 KB244 KB (53%)✓1st
https://justpaste.it/build/827.7313dc7f.js161 KB159 KB (99%)✓1st
https://justpaste.it/build/6315.0562b539.js35 KB27 KB (81%)✓1st
https://justpaste.it/build/2179.4bcb849f.js59 KB26 KB (44%)✓1st
https://justpaste.it/build/4423.07dfbf34.js5 KB—✓1st
https://justpaste.it/build/6568.ca598f5f.js15 KB—✓1st
https://justpaste.it/build/2488.2d4acc35.js19 KB—✓1st
https://justpaste.it/build/8100.8cfb65b0.js6 KB—✓1st
https://justpaste.it/build/editArticle.c3c13260.js27 KB—✓1st
https://justpaste.it/build/runtime.61ff66f8.js1 KB—✓1st

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

B
Page Weight Budget
1.1 MB transferred, 26 requests
REVIEW
1.1 MB transferred, 26 requests
Info::
Page weighs 3.6 MB (1.1 MB transferred)
Warning::
JavaScript is 865 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 865 KB
Info::
26 HTTP requests
Info::
Estimated 0.22 g CO2 per page load
1.1 MB / 2.4 MB budget
1.1 MB transferred
26 requests
0.22 g CO2 per page load
JavaScript 865.0 KiB 79%
Fonts 131.3 KiB 12%
CSS 86.0 KiB 8%
Images 9.9 KiB 1%
HTML 3.3 KiB 0%
Other 1.5 KiB 0%
Other 726 B 0%
Other 579 B 0%
0 2.4 MB 4.9 MB
Under budget

Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.

Why this matters

JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.

Source: web.dev

C
JS Execution Cost
Action
1130ms total JS execution
REVIEW
1130ms total JS execution
Warning::
https://justpaste.it/build/2179.4bcb849f.js: 426ms CPU time
Warning::
https://justpaste.it/build/5.44b684b4.js: 300ms CPU time
Info::
https://justpaste.it/build/6568.ca598f5f.js: 220ms CPU time
Info::
Unattributable: 98ms CPU time
Info::
https://justpaste.it/: 86ms CPU time
Info::
Third-party scripts: 98ms (9% of total)

Main Thread Breakdown

Script Evaluation 57% Style & Layout 14% Other 13% Script Parsing & Compilation 11% Parse HTML & CSS 3%
ScriptTotalScriptingParse/CompileParty
https://justpaste.it/build/2179.4bcb849f.js426ms392ms8ms1st
https://justpaste.it/build/5.44b684b4.js300ms153ms75ms1st
https://justpaste.it/build/6568.ca598f5f.js220ms141ms3ms1st
Unattributable98ms2ms0ms3rd
https://justpaste.it/86ms2ms1ms1st
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

B
HTTP Caching
max-age=0, must-revalidate, private
REVIEW
max-age=0, must-revalidate, private
Info::
Cache-Control header is set
Got: max-age=0, must-revalidate, private
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

max-age=0, must-revalidate, private

DirectiveValueMeaning
max-age0Cache for 0 seconds
must-revalidate—Must recheck with server after expiry
private—Only browser cache, not CDN/proxy
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+
Image Optimization
1 images, 0 KB saveable
PASS
1 images, 0 KB saveable
Info::
All images are well-optimized
1 images 10 KB
0 oversized -0 KB
1 legacy format
0 missing dimensions CLS risk
A+
Font Loading
1 fonts (131 KB)
PASS
1 fonts (131 KB)
Info::
1 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

1

131 KB total

Render-blocking

0

of 1

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 500 ms 1.0 s FCP 303 ms LCP 515 mshttps://justpaste.it/build/fonts/bootstrap-icons.92ea18a8.woff2bootstrap-icons.92ea18a... https://justpaste.it/build/fonts/bootstrap-icons.92ea18a8.woff2 — 131.3 KiB — 24 ms — font-display: swap
bootstrap-icons.92ea18a... woff2 swap
Size 131 KB
Load time 24 ms
Start 791 ms
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
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 ~66 KB and ~132 ms

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
Page Weight Inventory
26 resources · 1.1 MB · 457 KB savings available
PASS
26 resources · 1.1 MB · 457 KB savings available
Warning::
Page weight 74 KB over 1MB target
Got: 1.1 MB Expected: ≤ 1 MB
Info::
~457 KB of savings available
Info::
1 resources over 200KB
26 resources · 1.1 MiB · 0 third-party 74.2 KiB over 1MB target
JavaScript 79% · 865.0 KiB
Font 12% · 131.3 KiB
CSS 8% · 86.0 KiB
Image 1% · 11.4 KiB
Document 0% · 3.3 KiB
Other 0% · 1.3 KiB

~456.7 KiB of savings available

Remove unused JavaScript: 456.7 KiB
Network Waterfall
26 requests over 1314ms
INFO
0 ms 500 ms 1.0 s FCP 303 ms LCP 515 mshttps://justpaste.it// https://justpaste.it/ — 200 — 3.3 KiB — 155 ms — h2https://justpaste.it/build/editarticlestyles.d66dd344.css/build/editarticlestyles.d66dd344.c... https://justpaste.it/build/editarticlestyles.d66dd344.css — 200 — 7.2 KiB — 26 ms — h2https://justpaste.it/static/img/jp_logo_v3.svg/static/img/jp_logo_v3.svg https://justpaste.it/static/img/jp_logo_v3.svg — 200 — 9.9 KiB — 61 ms — h2https://justpaste.it/build/7337.eefa2517.css/build/7337.eefa2517.css https://justpaste.it/build/7337.eefa2517.css — 200 — 13.8 KiB — 42 ms — h2https://justpaste.it/build/global.c444bf34.css/build/global.c444bf34.css https://justpaste.it/build/global.c444bf34.css — 200 — 26.5 KiB — 56 ms — h2https://justpaste.it/build/827.7313dc7f.js/build/827.7313dc7f.js https://justpaste.it/build/827.7313dc7f.js — 200 — 160.6 KiB — 98 ms — h2https://justpaste.it/build/6315.0562b539.js/build/6315.0562b539.js https://justpaste.it/build/6315.0562b539.js — 200 — 34.7 KiB — 97 ms — h2https://justpaste.it/build/8097.f87620f1.js/build/8097.f87620f1.js https://justpaste.it/build/8097.f87620f1.js — 200 — 21.7 KiB — 44 ms — h2https://justpaste.it/build/4423.07dfbf34.js/build/4423.07dfbf34.js https://justpaste.it/build/4423.07dfbf34.js — 200 — 5.4 KiB — 37 ms — h2https://justpaste.it/build/2488.2d4acc35.js/build/2488.2d4acc35.js https://justpaste.it/build/2488.2d4acc35.js — 200 — 19.3 KiB — 48 ms — h2https://justpaste.it/build/6568.ca598f5f.js/build/6568.ca598f5f.js https://justpaste.it/build/6568.ca598f5f.js — 200 — 14.7 KiB — 50 ms — h2https://justpaste.it/build/5.44b684b4.js/build/5.44b684b4.js https://justpaste.it/build/5.44b684b4.js — 200 — 460.8 KiB — 131 ms — h2https://justpaste.it/build/8100.8cfb65b0.js/build/8100.8cfb65b0.js https://justpaste.it/build/8100.8cfb65b0.js — 200 — 6.3 KiB — 120 ms — h2https://justpaste.it/build/editArticle.c3c13260.js/build/editArticle.c3c13260.js https://justpaste.it/build/editArticle.c3c13260.js — 200 — 26.7 KiB — 133 ms — h2https://justpaste.it/site.webmanifest/site.webmanifest https://justpaste.it/site.webmanifest — 200 — 726 B — 86 ms — h2https://justpaste.it/build/runtime.61ff66f8.js/build/runtime.61ff66f8.js https://justpaste.it/build/runtime.61ff66f8.js — 200 — 1.3 KiB — 125 ms — h2https://justpaste.it/build/2179.4bcb849f.js/build/2179.4bcb849f.js https://justpaste.it/build/2179.4bcb849f.js — 200 — 58.7 KiB — 146 ms — h2https://justpaste.it/build/1083.3be44e69.js/build/1083.3be44e69.js https://justpaste.it/build/1083.3be44e69.js — 200 — 20.8 KiB — 138 ms — h2https://justpaste.it/build/mainpanelwidget.8f73f68c.js/build/mainpanelwidget.8f73f68c.js https://justpaste.it/build/mainpanelwidget.8f73f68c.js — 200 — 3.8 KiB — 141 ms — h2https://justpaste.it/api/v1/new-article/api/v1/new-article https://justpaste.it/api/v1/new-article — 200 — 579 B — 176 ms — h2https://justpaste.it/favicon.svg/favicon.svg https://justpaste.it/favicon.svg — 200 — 1.5 KiB — 20 ms — h2https://justpaste.it/build/fonts/bootstrap-icons.92ea18a8.woff2/build/fonts/bootstrap-icons.92ea18... https://justpaste.it/build/fonts/bootstrap-icons.92ea18a8.woff2 — 200 — 131.3 KiB — 24 ms — h2https://justpaste.it/favicon.svg/favicon.svg https://justpaste.it/favicon.svg — 200 — 0 B — 2 ms — h2https://justpaste.it/build/skins/ui/oxide/content.css/build/skins/ui/oxide/content.css https://justpaste.it/build/skins/ui/oxide/content.css — 200 — 7.0 KiB — 25 ms — h2https://justpaste.it/build/editor.eb6b4e90.css/build/editor.eb6b4e90.css https://justpaste.it/build/editor.eb6b4e90.css — 200 — 31.5 KiB — 37 ms — h2https://justpaste.it/build/plugins/emoticons/js/emojis.js/build/plugins/emoticons/js/emojis.... https://justpaste.it/build/plugins/emoticons/js/emojis.js — 200 — 30.2 KiB — 34 ms — h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
9% of JavaScript execution is third-party
First-party Third-party 98ms · 0KB · €1/mo
Unattributable
Other
Optional
Execution 98ms
Transfer 0 KB
Monthly Cost €1/mo

How third-party costs are calculated

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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