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https://diagrams.net

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
90
GRADE
A
FIX
2
REVIEW
2
PASS
11
INFO
2

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

Mobile Desktop
73
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
70
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.
83
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.

3.85 s

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

4.64 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.

4.90 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.

4.64 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
11 PASS 2 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 (731.3 KiB of 731.4 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
Image Optimization
Action
17 images, 0 KB saveable
REVIEW
17 images, 0 KB saveable
Warning::
https://www.drawio.com/assets/svg/home-dia1.svg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.drawio.com/assets/svg/home-dia2.svg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
17 images 433 KB
0 oversized -0 KB
17 legacy format
2 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

B
JS Execution Cost
561ms total JS execution
REVIEW
561ms total JS execution
Warning::
Unattributable: 321ms CPU time
Info::
https://www.drawio.com/: 135ms CPU time
Info::
https://www.drawio.com/assets/vendor/jquery/dist/j...: 105ms CPU time
Warning::
Third-party scripts: 561ms (100% of total)

Main Thread Breakdown

Other 42% Style & Layout 25% Script Evaluation 18% Parse HTML & CSS 8% Script Parsing & Compilation 4% Rendering 4%
ScriptTotalScriptingParse/CompileParty
Unattributable321ms7ms0ms3rd
https://www.drawio.com/135ms4ms1ms3rd
https://www.drawio.com/assets/vendor/jquery/dist/jquery.min.js105ms71ms7ms3rd
A
Page Weight Budget
731 KB transferred, 44 requests
PASS
731 KB transferred, 44 requests
Info::
Page weighs 1.7 MB (731 KB transferred)
Info::
44 HTTP requests
Info::
Estimated 0.15 g CO2 per page load
731 KB / 2.4 MB budget
731 KB transferred
44 requests
0.15 g CO2 per page load
Images 432.6 KiB 59%
Fonts 111.0 KiB 15%
JavaScript 94.9 KiB 13%
CSS 81.9 KiB 11%
HTML 7.7 KiB 1%
Other 3.3 KiB 0%
Other 35 B 0%
Other 0 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+
Font Loading
5 fonts (111 KB)
PASS
5 fonts (111 KB)
Info::
5 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

5

111 KB total

Render-blocking

0

of 5

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 3.9 s LCP 4.6 shttps://fonts.gstatic.com/s/lato/v25/S6uyw4BMUTPHjx4wXiWtFCc.woff2S6uyw4BMUTPHjx4wXiWtFCc... https://fonts.gstatic.com/s/lato/v25/S6uyw4BMUTPHjx4wXiWtFCc.woff2 — 13.7 KiB — 41 ms — font-display: swaphttps://fonts.gstatic.com/s/poppins/v24/pxiByp8kv8JHgFVrLGT9Z1xlFd2JQEk.woff2pxiByp8kv8JHgFVrLGT9Z1x... https://fonts.gstatic.com/s/poppins/v24/pxiByp8kv8JHgFVrLGT9Z1xlFd2JQEk.woff2 — 7.6 KiB — 32 ms — font-display: swaphttps://fonts.gstatic.com/s/poppins/v24/pxiEyp8kv8JHgFVrJJfecnFHGPc.woff2pxiEyp8kv8JHgFVrJJfecnF... https://fonts.gstatic.com/s/poppins/v24/pxiEyp8kv8JHgFVrJJfecnFHGPc.woff2 — 7.7 KiB — 49 ms — font-display: swaphttps://fonts.gstatic.com/s/poppins/v24/pxiByp8kv8JHgFVrLCz7Z1xlFd2JQEk.woff2pxiByp8kv8JHgFVrLCz7Z1x... https://fonts.gstatic.com/s/poppins/v24/pxiByp8kv8JHgFVrLCz7Z1xlFd2JQEk.woff2 — 7.7 KiB — 44 ms — font-display: swaphttps://www.drawio.com/assets/webfonts/fa-solid-900.woff2fa-solid-900.woff2 https://www.drawio.com/assets/webfonts/fa-solid-900.woff2 — 74.3 KiB — 92 ms — font-display: swap
S6uyw4BMUTPHjx4wXiWtFCc... woff2 swap
Size 14 KB
Load time 41 ms
Start 335 ms
Risk FOUT — text flashes from fallback to web font
pxiByp8kv8JHgFVrLGT9Z1x... woff2 swap
Size 8 KB
Load time 32 ms
Start 335 ms
Risk FOUT — text flashes from fallback to web font
pxiEyp8kv8JHgFVrJJfecnF... woff2 swap
Size 8 KB
Load time 49 ms
Start 336 ms
Risk FOUT — text flashes from fallback to web font
pxiByp8kv8JHgFVrLCz7Z1x... woff2 swap
Size 8 KB
Load time 44 ms
Start 336 ms
Risk FOUT — text flashes from fallback to web font
fa-solid-900.woff2 woff2 swap
Size 74 KB
Load time 92 ms
Start 336 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
11 scripts, 0 KB unused
PASS
11 scripts, 0 KB unused
0 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.drawio.com/assets/vendor/jquery/dist/jquery.min.js31 KB—✓3rd
https://www.drawio.com/assets/vendor/jquery-migrate/dist/jquery-migrate.min.js5 KB—✓3rd
https://www.drawio.com/assets/vendor/popper.js/dist/umd/popper.min.js8 KB—✓3rd
https://www.drawio.com/assets/js/hs.megamenu.js5 KB—✓3rd
https://www.drawio.com/assets/vendor/jquery-validation/dist/jquery.validate.min.js8 KB—✓3rd
https://www.drawio.com/assets/js/hs.core.js1 KB—✓3rd
https://www.drawio.com/assets/js/hs.header.js5 KB—✓3rd
https://www.drawio.com/assets/js/hs.unfold.js4 KB—✓3rd
https://www.drawio.com/assets/js/home-init.js1 KB—✓3rd
https://www.drawio.com/assets/js/bootstrap.min.js16 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
44 resources · 731 KB · 0 KB savings available
PASS
44 resources · 731 KB · 0 KB savings available
Info::
Within 1MB page-weight target
Got: 731 KB
Warning::
43 third-party resources (100% of weight)
Info::
1 resources over 200KB
44 resources · 731.4 KiB · 43 third-party Within 1MB page-weight target
Image 60% · 435.8 KiB
Font 15% · 111.0 KiB
JavaScript 13% · 94.9 KiB
CSS 11% · 81.9 KiB
Document 1% · 7.7 KiB
Other 0% · 181 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+
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
44 requests over 557ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s FCP 3.9 s LCP 4.6 shttps://diagrams.net// https://diagrams.net/ — 301 — 146 B — 62 ms — h2https://www.drawio.com/www.drawio.com/ https://www.drawio.com/ — 200 — 7.7 KiB — 86 ms — h2https://fonts.googleapis.com/css?family=Poppins:300,400,500,600,700fonts.googleapis.com/css?family=Pop... https://fonts.googleapis.com/css?family=Poppins:300,400,500,600,700 — 200 — 1.0 KiB — 87 ms — h2https://fonts.googleapis.com/css?family=Lato&display=swapfonts.googleapis.com/css?family=Lat... https://fonts.googleapis.com/css?family=Lato&display=swap — 200 — 482 B — 91 ms — h2https://www.drawio.com/assets/css/fontawesome-all.min.csswww.drawio.com/assets/css/fontaweso... https://www.drawio.com/assets/css/fontawesome-all.min.css — 200 — 12.2 KiB — 34 ms — h2https://www.drawio.com/assets/css/animate.min.csswww.drawio.com/assets/css/animate.m... https://www.drawio.com/assets/css/animate.min.css — 200 — 4.7 KiB — 34 ms — h2https://www.drawio.com/assets/css/hs.megamenu.csswww.drawio.com/assets/css/hs.megame... https://www.drawio.com/assets/css/hs.megamenu.css — 200 — 1.1 KiB — 31 ms — h2https://www.drawio.com/assets/css/theme.csswww.drawio.com/assets/css/theme.css https://www.drawio.com/assets/css/theme.css — 200 — 62.4 KiB — 52 ms — h2https://www.drawio.com/assets/svg/icons/icon-45.svgwww.drawio.com/assets/svg/icons/ico... https://www.drawio.com/assets/svg/icons/icon-45.svg — 200 — 1.1 KiB — 34 ms — h2https://www.drawio.com/assets/svg/icons/icon-4.svgwww.drawio.com/assets/svg/icons/ico... https://www.drawio.com/assets/svg/icons/icon-4.svg — 200 — 1.0 KiB — 35 ms — h2https://www.drawio.com/assets/svg/icons/icon-2.svgwww.drawio.com/assets/svg/icons/ico... https://www.drawio.com/assets/svg/icons/icon-2.svg — 200 — 1.2 KiB — 50 ms — h2https://www.drawio.com/assets/svg/icons/icon-1.svgwww.drawio.com/assets/svg/icons/ico... https://www.drawio.com/assets/svg/icons/icon-1.svg — 200 — 1.0 KiB — 75 ms — h2https://www.drawio.com/assets/svg/home-dia1.svgwww.drawio.com/assets/svg/home-dia1... https://www.drawio.com/assets/svg/home-dia1.svg — 200 — 40.9 KiB — 76 ms — h2https://www.drawio.com/assets/vendor/jquery/dist/jquery.min.jswww.drawio.com/assets/vendor/jquery... https://www.drawio.com/assets/vendor/jquery/dist/jquery.min.js — 200 — 31.0 KiB — 79 ms — h2https://www.drawio.com/assets/vendor/jquery-migrate/dist/jquery-migrate.min.jswww.drawio.com/assets/vendor/jquery... https://www.drawio.com/assets/vendor/jquery-migrate/dist/jquery-migrate.min.js — 200 — 5.2 KiB — 76 ms — h2https://www.drawio.com/assets/vendor/popper.js/dist/umd/popper.min.jswww.drawio.com/assets/vendor/popper... https://www.drawio.com/assets/vendor/popper.js/dist/umd/popper.min.js — 200 — 7.6 KiB — 47 ms — h2https://www.drawio.com/assets/js/hs.megamenu.jswww.drawio.com/assets/js/hs.megamen... https://www.drawio.com/assets/js/hs.megamenu.js — 200 — 4.8 KiB — 75 ms — h2https://www.drawio.com/assets/vendor/jquery-validation/dist/jquery.validate.min.jswww.drawio.com/assets/vendor/jquery... https://www.drawio.com/assets/vendor/jquery-validation/dist/jquery.validate.min.js — 200 — 8.4 KiB — 75 ms — h2https://www.drawio.com/assets/js/hs.core.jswww.drawio.com/assets/js/hs.core.js https://www.drawio.com/assets/js/hs.core.js — 200 — 1.5 KiB — 75 ms — h2https://www.drawio.com/assets/js/hs.header.jswww.drawio.com/assets/js/hs.header.... https://www.drawio.com/assets/js/hs.header.js — 200 — 5.1 KiB — 75 ms — h2https://www.drawio.com/assets/js/hs.unfold.jswww.drawio.com/assets/js/hs.unfold.... https://www.drawio.com/assets/js/hs.unfold.js — 200 — 3.9 KiB — 75 ms — h2https://www.drawio.com/assets/js/home-init.jswww.drawio.com/assets/js/home-init.... https://www.drawio.com/assets/js/home-init.js — 200 — 766 B — 75 ms — h2https://www.drawio.com/assets/js/bootstrap.min.jswww.drawio.com/assets/js/bootstrap.... https://www.drawio.com/assets/js/bootstrap.min.js — 200 — 16.0 KiB — 76 ms — h2https://www.drawio.com/assets/svg/icons/icon-7.svgwww.drawio.com/assets/svg/icons/ico... https://www.drawio.com/assets/svg/icons/icon-7.svg — 200 — 1.6 KiB — 76 ms — h2https://www.drawio.com/assets/svg/icons/icon-3.svgwww.drawio.com/assets/svg/icons/ico... https://www.drawio.com/assets/svg/icons/icon-3.svg — 200 — 1.5 KiB — 76 ms — h2https://www.drawio.com/assets/svg/icons/icon-20.svgwww.drawio.com/assets/svg/icons/ico... https://www.drawio.com/assets/svg/icons/icon-20.svg — 200 — 1.3 KiB — 75 ms — h2https://www.drawio.com/assets/svg/home-dia2.svgwww.drawio.com/assets/svg/home-dia2... https://www.drawio.com/assets/svg/home-dia2.svg — 200 — 3.0 KiB — 75 ms — h2https://www.drawio.com/assets/img/blog/diagrams-features.pngwww.drawio.com/assets/img/blog/diag... https://www.drawio.com/assets/img/blog/diagrams-features.png — 200 — 356.4 KiB — 86 ms — h2https://www.drawio.com/assets/img/blog/gitflow-examples.svgwww.drawio.com/assets/img/blog/gitf... https://www.drawio.com/assets/img/blog/gitflow-examples.svg — 200 — 6.2 KiB — 83 ms — h2https://www.drawio.com/assets/svg/icons/icon-29.svgwww.drawio.com/assets/svg/icons/ico... https://www.drawio.com/assets/svg/icons/icon-29.svg — 200 — 1.1 KiB — 83 ms — h2
0 ms 1.0 s 2.0 s 3.0 s 4.0 s FCP 3.9 s LCP 4.6 shttps://diagrams.net// https://diagrams.net/ — 301 — 146 B — 62 ms — h2https://www.drawio.com/www.drawio.com/ https://www.drawio.com/ — 200 — 7.7 KiB — 86 ms — h2https://fonts.googleapis.com/css?family=Poppins:300,400,500,600,700fonts.googleapis.com/css?family=Pop... https://fonts.googleapis.com/css?family=Poppins:300,400,500,600,700 — 200 — 1.0 KiB — 87 ms — h2https://fonts.googleapis.com/css?family=Lato&display=swapfonts.googleapis.com/css?family=Lat... https://fonts.googleapis.com/css?family=Lato&display=swap — 200 — 482 B — 91 ms — h2https://www.drawio.com/assets/css/fontawesome-all.min.csswww.drawio.com/assets/css/fontaweso... https://www.drawio.com/assets/css/fontawesome-all.min.css — 200 — 12.2 KiB — 34 ms — h2https://www.drawio.com/assets/css/animate.min.csswww.drawio.com/assets/css/animate.m... https://www.drawio.com/assets/css/animate.min.css — 200 — 4.7 KiB — 34 ms — h2https://www.drawio.com/assets/css/hs.megamenu.csswww.drawio.com/assets/css/hs.megame... https://www.drawio.com/assets/css/hs.megamenu.css — 200 — 1.1 KiB — 31 ms — h2https://www.drawio.com/assets/css/theme.csswww.drawio.com/assets/css/theme.css https://www.drawio.com/assets/css/theme.css — 200 — 62.4 KiB — 52 ms — h2https://www.drawio.com/assets/svg/icons/icon-45.svgwww.drawio.com/assets/svg/icons/ico... https://www.drawio.com/assets/svg/icons/icon-45.svg — 200 — 1.1 KiB — 34 ms — h2https://www.drawio.com/assets/svg/icons/icon-4.svgwww.drawio.com/assets/svg/icons/ico... https://www.drawio.com/assets/svg/icons/icon-4.svg — 200 — 1.0 KiB — 35 ms — h2https://www.drawio.com/assets/svg/icons/icon-2.svgwww.drawio.com/assets/svg/icons/ico... https://www.drawio.com/assets/svg/icons/icon-2.svg — 200 — 1.2 KiB — 50 ms — h2https://www.drawio.com/assets/svg/icons/icon-1.svgwww.drawio.com/assets/svg/icons/ico... https://www.drawio.com/assets/svg/icons/icon-1.svg — 200 — 1.0 KiB — 75 ms — h2https://www.drawio.com/assets/svg/home-dia1.svgwww.drawio.com/assets/svg/home-dia1... https://www.drawio.com/assets/svg/home-dia1.svg — 200 — 40.9 KiB — 76 ms — h2https://www.drawio.com/assets/vendor/jquery/dist/jquery.min.jswww.drawio.com/assets/vendor/jquery... https://www.drawio.com/assets/vendor/jquery/dist/jquery.min.js — 200 — 31.0 KiB — 79 ms — h2https://www.drawio.com/assets/vendor/jquery-migrate/dist/jquery-migrate.min.jswww.drawio.com/assets/vendor/jquery... https://www.drawio.com/assets/vendor/jquery-migrate/dist/jquery-migrate.min.js — 200 — 5.2 KiB — 76 ms — h2https://www.drawio.com/assets/vendor/popper.js/dist/umd/popper.min.jswww.drawio.com/assets/vendor/popper... https://www.drawio.com/assets/vendor/popper.js/dist/umd/popper.min.js — 200 — 7.6 KiB — 47 ms — h2https://www.drawio.com/assets/js/hs.megamenu.jswww.drawio.com/assets/js/hs.megamen... https://www.drawio.com/assets/js/hs.megamenu.js — 200 — 4.8 KiB — 75 ms — h2https://www.drawio.com/assets/vendor/jquery-validation/dist/jquery.validate.min.jswww.drawio.com/assets/vendor/jquery... https://www.drawio.com/assets/vendor/jquery-validation/dist/jquery.validate.min.js — 200 — 8.4 KiB — 75 ms — h2https://www.drawio.com/assets/js/hs.core.jswww.drawio.com/assets/js/hs.core.js https://www.drawio.com/assets/js/hs.core.js — 200 — 1.5 KiB — 75 ms — h2https://www.drawio.com/assets/js/hs.header.jswww.drawio.com/assets/js/hs.header.... https://www.drawio.com/assets/js/hs.header.js — 200 — 5.1 KiB — 75 ms — h2https://www.drawio.com/assets/js/hs.unfold.jswww.drawio.com/assets/js/hs.unfold.... https://www.drawio.com/assets/js/hs.unfold.js — 200 — 3.9 KiB — 75 ms — h2https://www.drawio.com/assets/js/home-init.jswww.drawio.com/assets/js/home-init.... https://www.drawio.com/assets/js/home-init.js — 200 — 766 B — 75 ms — h2https://www.drawio.com/assets/js/bootstrap.min.jswww.drawio.com/assets/js/bootstrap.... https://www.drawio.com/assets/js/bootstrap.min.js — 200 — 16.0 KiB — 76 ms — h2https://www.drawio.com/assets/svg/icons/icon-7.svgwww.drawio.com/assets/svg/icons/ico... https://www.drawio.com/assets/svg/icons/icon-7.svg — 200 — 1.6 KiB — 76 ms — h2https://www.drawio.com/assets/svg/icons/icon-3.svgwww.drawio.com/assets/svg/icons/ico... https://www.drawio.com/assets/svg/icons/icon-3.svg — 200 — 1.5 KiB — 76 ms — h2https://www.drawio.com/assets/svg/icons/icon-20.svgwww.drawio.com/assets/svg/icons/ico... https://www.drawio.com/assets/svg/icons/icon-20.svg — 200 — 1.3 KiB — 75 ms — h2https://www.drawio.com/assets/svg/home-dia2.svgwww.drawio.com/assets/svg/home-dia2... https://www.drawio.com/assets/svg/home-dia2.svg — 200 — 3.0 KiB — 75 ms — h2https://www.drawio.com/assets/img/blog/diagrams-features.pngwww.drawio.com/assets/img/blog/diag... https://www.drawio.com/assets/img/blog/diagrams-features.png — 200 — 356.4 KiB — 86 ms — h2https://www.drawio.com/assets/img/blog/gitflow-examples.svgwww.drawio.com/assets/img/blog/gitf... https://www.drawio.com/assets/img/blog/gitflow-examples.svg — 200 — 6.2 KiB — 83 ms — h2https://www.drawio.com/assets/svg/icons/icon-29.svgwww.drawio.com/assets/svg/icons/ico... https://www.drawio.com/assets/svg/icons/icon-29.svg — 200 — 1.1 KiB — 83 ms — h2https://www.drawio.com/assets/svg/icons/icon-26.svgwww.drawio.com/assets/svg/icons/ico... https://www.drawio.com/assets/svg/icons/icon-26.svg — 200 — 1.0 KiB — 82 ms — h2https://www.drawio.com/assets/svg/icons/atlassian.svgwww.drawio.com/assets/svg/icons/atl... https://www.drawio.com/assets/svg/icons/atlassian.svg — 200 — 1.5 KiB — 82 ms — h2https://www.drawio.com/assets/svg/icons/icon-37.svgwww.drawio.com/assets/svg/icons/ico... https://www.drawio.com/assets/svg/icons/icon-37.svg — 200 — 812 B — 82 ms — h2https://www.drawio.com/assets/svg/icons/icon-38.svgwww.drawio.com/assets/svg/icons/ico... https://www.drawio.com/assets/svg/icons/icon-38.svg — 200 — 1.1 KiB — 82 ms — h2https://www.drawio.com/assets/svg/icons/notion-logo.svgwww.drawio.com/assets/svg/icons/not... https://www.drawio.com/assets/svg/icons/notion-logo.svg — 200 — 11.7 KiB — 82 ms — h2https://static.cloudflareinsights.com/beacon.min.jsstatic.cloudflareinsights.com/beaco... https://static.cloudflareinsights.com/beacon.min.js — 200 — 10.7 KiB — 118 ms — h2https://fonts.gstatic.com/s/lato/v25/S6uyw4BMUTPHjx4wXiWtFCc.woff2fonts.gstatic.com/s/lato/v25/S6uyw4... https://fonts.gstatic.com/s/lato/v25/S6uyw4BMUTPHjx4wXiWtFCc.woff2 — 200 — 13.7 KiB — 41 ms — h3https://fonts.gstatic.com/s/poppins/v24/pxiByp8kv8JHgFVrLGT9Z1xlFd2JQEk.woff2fonts.gstatic.com/s/poppins/v24/pxi... https://fonts.gstatic.com/s/poppins/v24/pxiByp8kv8JHgFVrLGT9Z1xlFd2JQEk.woff2 — 200 — 7.6 KiB — 32 ms — h3https://fonts.gstatic.com/s/poppins/v24/pxiEyp8kv8JHgFVrJJfecnFHGPc.woff2fonts.gstatic.com/s/poppins/v24/pxi... https://fonts.gstatic.com/s/poppins/v24/pxiEyp8kv8JHgFVrJJfecnFHGPc.woff2 — 200 — 7.7 KiB — 49 ms — h3https://fonts.gstatic.com/s/poppins/v24/pxiByp8kv8JHgFVrLCz7Z1xlFd2JQEk.woff2fonts.gstatic.com/s/poppins/v24/pxi... https://fonts.gstatic.com/s/poppins/v24/pxiByp8kv8JHgFVrLCz7Z1xlFd2JQEk.woff2 — 200 — 7.7 KiB — 44 ms — h3https://www.drawio.com/assets/webfonts/fa-solid-900.woff2www.drawio.com/assets/webfonts/fa-s... https://www.drawio.com/assets/webfonts/fa-solid-900.woff2 — 200 — 74.3 KiB — 92 ms — h3https://cloudflareinsights.com/cdn-cgi/rumcloudflareinsights.com/cdn-cgi/rum https://cloudflareinsights.com/cdn-cgi/rum — 200 — 0 B — 94 ms — h2https://www.drawio.com/favicon.icowww.drawio.com/favicon.ico https://www.drawio.com/favicon.ico — 200 — 3.2 KiB — 27 ms — h3https://cloudflareinsights.com/cdn-cgi/rumcloudflareinsights.com/cdn-cgi/rum https://cloudflareinsights.com/cdn-cgi/rum — 204 — 35 B — 21 ms — 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 561ms · 39KB · €6/mo
Unattributable
Other
Costly
Execution 321ms
Transfer 0 KB
Monthly Cost €3/mo
www.drawio.com
Other
Optional
Execution 135ms
Transfer 8 KB
Monthly Cost €1/mo
www.drawio.com
Other
Optional
Execution 105ms
Transfer 31 KB
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • Unattributable adds 321ms 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 321ms 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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