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https://documentcloud.org

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
91
GRADE
A
FIX
2
REVIEW
1
PASS
12
INFO
2

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

Mobile Desktop
83
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
87
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.

2.58 s

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

4.07 s

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

109 ms

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

0.006

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

2.58 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.

4.39 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
17
12 PASS 1 REVIEW 2 FIX
D
Third-Party Impact
Action
100% third-party, 0 ms blocking
FIX
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (200.4 KiB of 200.6 KiB)
Info::
Third-party blocking time is low (0 ms)
100%
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.

C
JS Execution Cost
Action
1105ms total JS execution
REVIEW
1105ms total JS execution
Warning::
Unattributable: 631ms CPU time
Warning::
https://www.documentcloud.org/home/: 252ms CPU time
Info::
https://www.documentcloud.org/_app/immutable/chunk...: 140ms CPU time
Info::
https://static.cloudflareinsights.com/beacon.min.j...: 81ms CPU time
Warning::
Third-party scripts: 1105ms (100% of total)

Main Thread Breakdown

Other 54% Script Evaluation 30% Style & Layout 12%
ScriptTotalScriptingParse/CompileParty
Unattributable631ms213ms0ms3rd
https://www.documentcloud.org/home/252ms14ms3ms3rd
https://www.documentcloud.org/_app/immutable/chunks/BhgG0JZu.js140ms129ms0ms3rd
https://static.cloudflareinsights.com/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312451681ms57ms5ms3rd
A+
Page Weight Budget
201 KB transferred, 76 requests
PASS
201 KB transferred, 76 requests
Info::
Page weighs 399 KB (201 KB transferred)
Info::
76 HTTP requests
Info::
Estimated 0.04 g CO2 per page load
201 KB / 2.4 MB budget
201 KB transferred
76 requests
0.04 g CO2 per page load
JavaScript 132.4 KiB 66%
Fonts 40.5 KiB 20%
HTML 12.3 KiB 6%
CSS 8.0 KiB 4%
Other 6.7 KiB 3%
Other 503 B 0%
Other 190 B 0%
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+
Font Loading
4 fonts (41 KB)
PASS
4 fonts (41 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

41 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 4.0 s FCP 2.6 s LCP 4.1 shttps://www.documentcloud.org/fonts/source-sans-pro-v21-latin-regular.woff2source-sans-pro-v21-lat... https://www.documentcloud.org/fonts/source-sans-pro-v21-latin-regular.woff2 — 13.0 KiB — 65 ms — font-display: swaphttps://www.documentcloud.org/fonts/source-sans-pro-v21-latin-700.woff2source-sans-pro-v21-lat... https://www.documentcloud.org/fonts/source-sans-pro-v21-latin-700.woff2 — 12.9 KiB — 61 ms — font-display: swaphttps://www.documentcloud.org/fonts/source-sans-pro-cyrillic-menuset-600.woff2source-sans-pro-cyrilli... https://www.documentcloud.org/fonts/source-sans-pro-cyrillic-menuset-600.woff2 — 1.7 KiB — 61 ms — font-display: swaphttps://www.documentcloud.org/fonts/source-sans-pro-v21-latin-600.woff2source-sans-pro-v21-lat... https://www.documentcloud.org/fonts/source-sans-pro-v21-latin-600.woff2 — 13.0 KiB — 28 ms — font-display: swap
source-sans-pro-v21-lat... woff2 swap
Size 13 KB
Load time 65 ms
Start 541 ms
Risk FOUT — text flashes from fallback to web font
source-sans-pro-v21-lat... woff2 swap
Size 13 KB
Load time 61 ms
Start 541 ms
Risk FOUT — text flashes from fallback to web font
source-sans-pro-cyrilli... woff2 swap
Size 2 KB
Load time 61 ms
Start 542 ms
Risk FOUT — text flashes from fallback to web font
source-sans-pro-v21-lat... woff2 swap
Size 13 KB
Load time 28 ms
Start 643 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
54 scripts, 0 KB unused
PASS
54 scripts, 0 KB unused
0 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.documentcloud.org/_app/immutable/entry/start.DWdbY498.js0 KB—✓3rd
https://www.documentcloud.org/_app/immutable/chunks/YOPZENuz.js14 KB—✓3rd
https://www.documentcloud.org/_app/immutable/chunks/C_hbC5JY.js4 KB—✓3rd
https://www.documentcloud.org/_app/immutable/chunks/sLIW3J_H.js11 KB—✓3rd
https://www.documentcloud.org/_app/immutable/chunks/DIeogL5L.js0 KB—✓3rd
https://www.documentcloud.org/_app/immutable/chunks/BhgG0JZu.js1 KB—✓3rd
https://www.documentcloud.org/_app/immutable/chunks/D4inFm7b.js1 KB—✓3rd
https://www.documentcloud.org/_app/immutable/entry/app.BYy38uQa.js6 KB—✓3rd
https://www.documentcloud.org/_app/immutable/chunks/Ct5FWWRu.js1 KB—✓3rd
https://www.documentcloud.org/_app/immutable/chunks/CHZTtV2Q.js1 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
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
A
Page Weight Inventory
76 resources · 201 KB · 0 KB savings available
PASS
76 resources · 201 KB · 0 KB savings available
Info::
Within 1MB page-weight target
Got: 201 KB
Warning::
75 third-party resources (100% of weight)
76 resources · 200.6 KiB · 75 third-party Within 1MB page-weight target
JavaScript 66% · 132.4 KiB
Font 20% · 40.5 KiB
Document 6% · 12.3 KiB
CSS 4% · 8.0 KiB
Image 3% · 6.0 KiB
Other 1% · 1.5 KiB
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+
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
76 requests over 871ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s FCP 2.6 s LCP 4.1 shttps://documentcloud.org// https://documentcloud.org/ — 301 — 245 B — 23 ms — h3https://www.documentcloud.org/www.documentcloud.org/ https://www.documentcloud.org/ — 307 — 262 B — 48 ms — h3https://www.documentcloud.org/home/www.documentcloud.org/home/ https://www.documentcloud.org/home/ — 200 — 12.3 KiB — 328 ms — h3https://www.documentcloud.org/cdn-cgi/speculationwww.documentcloud.org/cdn-cgi/specu... https://www.documentcloud.org/cdn-cgi/speculation — 200 — 290 B — 7 ms — h3https://www.documentcloud.org/_app/immutable/assets/Toaster.D-paroGX.csswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/assets/Toaster.D-paroGX.css — 200 — 859 B — 60 ms — h3https://www.documentcloud.org/_app/immutable/assets/0.BKLW9IPt.csswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/assets/0.BKLW9IPt.css — 200 — 1.6 KiB — 56 ms — h3https://www.documentcloud.org/_app/immutable/assets/Button.D-Prgwef.csswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/assets/Button.D-Prgwef.css — 200 — 1019 B — 53 ms — h3https://www.documentcloud.org/_app/immutable/assets/Logo.D44wVqke.csswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/assets/Logo.D44wVqke.css — 200 — 358 B — 48 ms — h3https://www.documentcloud.org/_app/immutable/assets/35.DbV54U0P.csswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/assets/35.DbV54U0P.css — 200 — 884 B — 61 ms — h3https://www.documentcloud.org/_app/immutable/entry/start.DWdbY498.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/entry/start.DWdbY498.js — 200 — 373 B — 60 ms — h3https://www.documentcloud.org/_app/immutable/chunks/YOPZENuz.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/YOPZENuz.js — 200 — 13.8 KiB — 77 ms — h3https://www.documentcloud.org/_app/immutable/chunks/C_hbC5JY.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/C_hbC5JY.js — 200 — 4.3 KiB — 73 ms — h3https://www.documentcloud.org/_app/immutable/chunks/sLIW3J_H.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/sLIW3J_H.js — 200 — 11.4 KiB — 60 ms — h3https://www.documentcloud.org/_app/immutable/chunks/DIeogL5L.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/DIeogL5L.js — 200 — 352 B — 76 ms — h3https://www.documentcloud.org/_app/immutable/chunks/BhgG0JZu.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/BhgG0JZu.js — 200 — 1.1 KiB — 96 ms — h3https://www.documentcloud.org/_app/immutable/chunks/D4inFm7b.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/D4inFm7b.js — 200 — 660 B — 145 ms — h3https://www.documentcloud.org/_app/immutable/entry/app.BYy38uQa.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/entry/app.BYy38uQa.js — 200 — 6.0 KiB — 171 ms — h3https://www.documentcloud.org/_app/immutable/chunks/Ct5FWWRu.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/Ct5FWWRu.js — 200 — 963 B — 183 ms — h3https://www.documentcloud.org/_app/immutable/chunks/CHZTtV2Q.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/CHZTtV2Q.js — 200 — 1.2 KiB — 169 ms — h3https://www.documentcloud.org/_app/immutable/chunks/DQeKDDYu.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/DQeKDDYu.js — 200 — 978 B — 168 ms — h3https://www.documentcloud.org/_app/immutable/chunks/DsnmJJEf.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/DsnmJJEf.js — 200 — 355 B — 164 ms — h3https://www.documentcloud.org/_app/immutable/chunks/BC4aQKbI.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/BC4aQKbI.js — 200 — 570 B — 159 ms — h3https://www.documentcloud.org/_app/immutable/chunks/BrJSQIbO.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/BrJSQIbO.js — 200 — 967 B — 162 ms — h3https://www.documentcloud.org/_app/immutable/chunks/BpPqnuzb.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/BpPqnuzb.js — 200 — 556 B — 160 ms — h3https://www.documentcloud.org/_app/immutable/chunks/DrKGFYuN.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/DrKGFYuN.js — 200 — 574 B — 152 ms — h3https://www.documentcloud.org/_app/immutable/chunks/Cn5dQpPK.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/Cn5dQpPK.js — 200 — 1.4 KiB — 160 ms — h3https://www.documentcloud.org/_app/immutable/nodes/0.B-eh1h1E.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/nodes/0.B-eh1h1E.js — 200 — 3.3 KiB — 164 ms — h3https://www.documentcloud.org/_app/immutable/chunks/MKEKFS9m.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/MKEKFS9m.js — 200 — 14.7 KiB — 168 ms — h3https://www.documentcloud.org/_app/immutable/chunks/gnU0ypJ3.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/gnU0ypJ3.js — 200 — 604 B — 163 ms — h3https://www.documentcloud.org/_app/immutable/chunks/BZLtfpyN.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/BZLtfpyN.js — 200 — 4.3 KiB — 164 ms — h3
0 ms 1.0 s 2.0 s 3.0 s 4.0 s FCP 2.6 s LCP 4.1 shttps://documentcloud.org// https://documentcloud.org/ — 301 — 245 B — 23 ms — h3https://www.documentcloud.org/www.documentcloud.org/ https://www.documentcloud.org/ — 307 — 262 B — 48 ms — h3https://www.documentcloud.org/home/www.documentcloud.org/home/ https://www.documentcloud.org/home/ — 200 — 12.3 KiB — 328 ms — h3https://www.documentcloud.org/cdn-cgi/speculationwww.documentcloud.org/cdn-cgi/specu... https://www.documentcloud.org/cdn-cgi/speculation — 200 — 290 B — 7 ms — h3https://www.documentcloud.org/_app/immutable/assets/Toaster.D-paroGX.csswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/assets/Toaster.D-paroGX.css — 200 — 859 B — 60 ms — h3https://www.documentcloud.org/_app/immutable/assets/0.BKLW9IPt.csswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/assets/0.BKLW9IPt.css — 200 — 1.6 KiB — 56 ms — h3https://www.documentcloud.org/_app/immutable/assets/Button.D-Prgwef.csswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/assets/Button.D-Prgwef.css — 200 — 1019 B — 53 ms — h3https://www.documentcloud.org/_app/immutable/assets/Logo.D44wVqke.csswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/assets/Logo.D44wVqke.css — 200 — 358 B — 48 ms — h3https://www.documentcloud.org/_app/immutable/assets/35.DbV54U0P.csswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/assets/35.DbV54U0P.css — 200 — 884 B — 61 ms — h3https://www.documentcloud.org/_app/immutable/entry/start.DWdbY498.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/entry/start.DWdbY498.js — 200 — 373 B — 60 ms — h3https://www.documentcloud.org/_app/immutable/chunks/YOPZENuz.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/YOPZENuz.js — 200 — 13.8 KiB — 77 ms — h3https://www.documentcloud.org/_app/immutable/chunks/C_hbC5JY.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/C_hbC5JY.js — 200 — 4.3 KiB — 73 ms — h3https://www.documentcloud.org/_app/immutable/chunks/sLIW3J_H.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/sLIW3J_H.js — 200 — 11.4 KiB — 60 ms — h3https://www.documentcloud.org/_app/immutable/chunks/DIeogL5L.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/DIeogL5L.js — 200 — 352 B — 76 ms — h3https://www.documentcloud.org/_app/immutable/chunks/BhgG0JZu.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/BhgG0JZu.js — 200 — 1.1 KiB — 96 ms — h3https://www.documentcloud.org/_app/immutable/chunks/D4inFm7b.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/D4inFm7b.js — 200 — 660 B — 145 ms — h3https://www.documentcloud.org/_app/immutable/entry/app.BYy38uQa.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/entry/app.BYy38uQa.js — 200 — 6.0 KiB — 171 ms — h3https://www.documentcloud.org/_app/immutable/chunks/Ct5FWWRu.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/Ct5FWWRu.js — 200 — 963 B — 183 ms — h3https://www.documentcloud.org/_app/immutable/chunks/CHZTtV2Q.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/CHZTtV2Q.js — 200 — 1.2 KiB — 169 ms — h3https://www.documentcloud.org/_app/immutable/chunks/DQeKDDYu.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/DQeKDDYu.js — 200 — 978 B — 168 ms — h3https://www.documentcloud.org/_app/immutable/chunks/DsnmJJEf.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/DsnmJJEf.js — 200 — 355 B — 164 ms — h3https://www.documentcloud.org/_app/immutable/chunks/BC4aQKbI.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/BC4aQKbI.js — 200 — 570 B — 159 ms — h3https://www.documentcloud.org/_app/immutable/chunks/BrJSQIbO.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/BrJSQIbO.js — 200 — 967 B — 162 ms — h3https://www.documentcloud.org/_app/immutable/chunks/BpPqnuzb.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/BpPqnuzb.js — 200 — 556 B — 160 ms — h3https://www.documentcloud.org/_app/immutable/chunks/DrKGFYuN.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/DrKGFYuN.js — 200 — 574 B — 152 ms — h3https://www.documentcloud.org/_app/immutable/chunks/Cn5dQpPK.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/Cn5dQpPK.js — 200 — 1.4 KiB — 160 ms — h3https://www.documentcloud.org/_app/immutable/nodes/0.B-eh1h1E.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/nodes/0.B-eh1h1E.js — 200 — 3.3 KiB — 164 ms — h3https://www.documentcloud.org/_app/immutable/chunks/MKEKFS9m.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/MKEKFS9m.js — 200 — 14.7 KiB — 168 ms — h3https://www.documentcloud.org/_app/immutable/chunks/gnU0ypJ3.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/gnU0ypJ3.js — 200 — 604 B — 163 ms — h3https://www.documentcloud.org/_app/immutable/chunks/BZLtfpyN.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/BZLtfpyN.js — 200 — 4.3 KiB — 164 ms — h3https://www.documentcloud.org/_app/immutable/chunks/Cgpd8MHL.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/Cgpd8MHL.js — 200 — 2.4 KiB — 159 ms — h3https://www.documentcloud.org/_app/immutable/chunks/CTW9kfg7.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/CTW9kfg7.js — 200 — 439 B — 158 ms — h3https://www.documentcloud.org/_app/immutable/chunks/0DJhBhbR.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/0DJhBhbR.js — 200 — 565 B — 141 ms — h3https://www.documentcloud.org/_app/immutable/chunks/zaiVUg98.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/zaiVUg98.js — 200 — 484 B — 171 ms — h3https://www.documentcloud.org/_app/immutable/chunks/KM8IAgEp.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/KM8IAgEp.js — 200 — 447 B — 156 ms — h3https://www.documentcloud.org/_app/immutable/chunks/CHCwBcBL.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/CHCwBcBL.js — 200 — 2.3 KiB — 167 ms — h3https://www.documentcloud.org/_app/immutable/chunks/69_IOA4Y.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/69_IOA4Y.js — 200 — 333 B — 148 ms — h3https://www.documentcloud.org/_app/immutable/chunks/xsETrqIx.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/xsETrqIx.js — 200 — 2.3 KiB — 167 ms — h3https://www.documentcloud.org/_app/immutable/chunks/y-hJ4gvH.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/y-hJ4gvH.js — 200 — 2.6 KiB — 156 ms — h3https://www.documentcloud.org/_app/immutable/chunks/B5niSeiM.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/B5niSeiM.js — 200 — 621 B — 150 ms — h3https://www.documentcloud.org/_app/immutable/chunks/CRtSbVHE.jswww.documentcloud.org/_app/immutabl... https://www.documentcloud.org/_app/immutable/chunks/CRtSbVHE.js — 200 — 1.0 KiB — 163 ms — 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— h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
100% of JavaScript execution is third-party
First-party Third-party 1105ms · 24KB · $15/mo
Unattributable
Other
Costly
Execution 631ms
Transfer 0 KB
Monthly Cost $8/mo
www.documentcloud.org
Other
Costly
Execution 252ms
Transfer 12 KB
Monthly Cost $3/mo
www.documentcloud.org
Other
Optional
Execution 140ms
Transfer 1 KB
Monthly Cost $2/mo
static.cloudflareinsights.com
Other
Optional
Execution 81ms
Transfer 11 KB
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • Unattributable adds 631ms and costs ~$8/month
  • www.documentcloud.org adds 252ms and costs ~$3/month

100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.

Why this matters

When third-party JS execution time exceeds your own, performance gains from frontend work are capped by code you don't own.

Learn more ▾

Every millisecond of third-party JS competes with your own for main-thread time. If their share is bigger than yours, optimization on your code base barely moves the needle. Audit, defer, or remove third-parties before further frontend optimization. Use Lighthouse's third-party audit to identify the worst offenders.

Source: web.dev

Unattributable takes 631ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

www.documentcloud.org takes 252ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

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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