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Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
87
GRADE
B
FIX
2
REVIEW
4
PASS
9
INFO
2

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

Mobile Desktop
65
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
77
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.

3.15 s

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

6.44 s

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

268 ms

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

0.023

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

3.84 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.

6.54 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
9 PASS 4 REVIEW 2 FIX
D
Third-Party Impact
Action
98% third-party, 0 ms blocking
FIX
98% third-party, 0 ms blocking
Warning::
Third-party code accounts for 98% of page weight (1.0 MiB of 1.0 MiB)
Info::
Third-party blocking time is low (0 ms)
98%
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.

B
Page Weight Budget
1.0 MB transferred, 35 requests
REVIEW
1.0 MB transferred, 35 requests
Info::
Page weighs 2.1 MB (1.0 MB transferred)
Info::
35 HTTP requests
Info::
Estimated 0.22 g CO2 per page load
1.0 MB / 2.4 MB budget
1.0 MB transferred
35 requests
0.22 g CO2 per page load
Images 595.6 KiB 56%
JavaScript 277.4 KiB 26%
CSS 86.3 KiB 8%
Fonts 76.4 KiB 7%
HTML 18.7 KiB 2%
Other 5.3 KiB 1%
Other 543 B 0%
Other 533 B 0%
0 2.4 MB 4.9 MB
Under budget
B
Image Optimization
21 images, 0 KB saveable
REVIEW
21 images, 0 KB saveable
Info::
All images are well-optimized
21 images 596 KB
0 oversized -0 KB
20 legacy format
0 missing dimensions CLS risk
C
JS Execution Cost
Action
1217ms total JS execution
REVIEW
1217ms total JS execution
Warning::
https://static.itch.io/index.min.js?1776731319: 304ms CPU time
Warning::
https://itch.io/: 272ms CPU time
Info::
Unattributable: 211ms CPU time
Info::
https://www.googletagmanager.com/gtag/js?id=G-36R7...: 210ms CPU time
Info::
https://static.itch.io/lib.min.js?1776731319: 143ms CPU time
Warning::
Third-party scripts: 945ms (78% of total)

Main Thread Breakdown

Style & Layout 34% Script Evaluation 31% Other 20% Script Parsing & Compilation 6% Rendering 5% Parse HTML & CSS 4%
ScriptTotalScriptingParse/CompileParty
https://static.itch.io/index.min.js?1776731319304ms34ms10ms3rd
https://itch.io/272ms61ms3ms1st
Unattributable211ms6ms0ms3rd
https://www.googletagmanager.com/gtag/js?id=G-36R7NPBMLS210ms173ms33ms3rd
https://static.itch.io/lib.min.js?1776731319143ms63ms12ms3rd
https://static.itch.io/react.min.js?177673131976ms57ms13ms3rd
B
JS Bundles
4 scripts, 129 KB unused
REVIEW
4 scripts, 129 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=G-36R7...: 61 KB unused (41%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://static.itch.io/index.min.js?1776731319: 23 KB unused (69%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://static.itch.io/lib.min.js?1776731319: 23 KB unused (52%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://static.itch.io/react.min.js?1776731319: 22 KB unused (43%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 129 KB
129 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=G-36R7NPBMLS149 KB61 KB (41%)✓3rd
https://static.itch.io/index.min.js?177673131934 KB23 KB (69%)✓3rd
https://static.itch.io/lib.min.js?177673131944 KB23 KB (52%)✓3rd
https://static.itch.io/react.min.js?177673131951 KB22 KB (43%)✓3rd

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

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
4 fonts (76 KB)
PASS
4 fonts (76 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

76 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 5.0 s 6.0 s FCP 3.2 s LCP 6.4 shttps://static.itch.io/fonts/lato-v14-latin-regular.woff2lato-v14-latin-regular.... https://static.itch.io/fonts/lato-v14-latin-regular.woff2 — 23.1 KiB — 47 ms — font-display: swaphttps://static.itch.io/fonts/lato-v14-latin-700.woff2lato-v14-latin-700.woff2 https://static.itch.io/fonts/lato-v14-latin-700.woff2 — 22.6 KiB — 33 ms — font-display: swaphttps://static.itch.io/fonts/lato-v14-latin-900.woff2lato-v14-latin-900.woff2 https://static.itch.io/fonts/lato-v14-latin-900.woff2 — 22.3 KiB — 31 ms — font-display: swaphttps://static.itch.io/icons/fonts/icomoon.ttf?4ibnvgicomoon.ttf https://static.itch.io/icons/fonts/icomoon.ttf?4ibnvg — 8.4 KiB — 48 ms — font-display: swap
lato-v14-latin-regular.... woff2 swap
Size 23 KB
Load time 47 ms
Start 443 ms
Risk FOUT — text flashes from fallback to web font
lato-v14-latin-700.woff2 woff2 swap
Size 23 KB
Load time 33 ms
Start 444 ms
Risk FOUT — text flashes from fallback to web font
lato-v14-latin-900.woff2 woff2 swap
Size 22 KB
Load time 31 ms
Start 444 ms
Risk FOUT — text flashes from fallback to web font
icomoon.ttf ttf swap
Size 8 KB
Load time 48 ms
Start 444 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
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 ~3 KB and ~6 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
35 resources · 1.0 MB · 129 KB savings available
PASS
35 resources · 1.0 MB · 129 KB savings available
Warning::
Page weight 37 KB over 1MB target
Got: 1.0 MB Expected: ≤ 1 MB
Info::
~129 KB of savings available
Warning::
30 third-party resources (98% of weight)
35 resources · 1.0 MiB · 30 third-party 36.7 KiB over 1MB target
Image 57% · 600.9 KiB
JavaScript 26% · 277.4 KiB
CSS 8% · 86.3 KiB
Font 7% · 76.4 KiB
Document 2% · 18.7 KiB
Other 0% · 1.1 KiB

~128.8 KiB of savings available

Remove unused JavaScript: 128.8 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
35 requests over 3554ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s FCP 3.2 s LCP 6.4 shttps://itch.io// https://itch.io/ — 200 — 18.7 KiB — 221 ms — h2https://static.itch.io/main.css?1776731319static.itch.io/main.css?1776731319 https://static.itch.io/main.css?1776731319 — 200 — 86.3 KiB — 85 ms — h2https://static.itch.io/lib.min.js?1776731319static.itch.io/lib.min.js?177673131... https://static.itch.io/lib.min.js?1776731319 — 200 — 44.1 KiB — 63 ms — h2https://static.itch.io/index.min.js?1776731319static.itch.io/index.min.js?1776731... https://static.itch.io/index.min.js?1776731319 — 200 — 34.1 KiB — 84 ms — h2https://static.itch.io/images/logo-black-new.svgstatic.itch.io/images/logo-black-ne... https://static.itch.io/images/logo-black-new.svg — 200 — 2.2 KiB — 64 ms — h2https://static.itch.io/images/itchio-textless-black.svgstatic.itch.io/images/itchio-textle... https://static.itch.io/images/itchio-textless-black.svg — 200 — 1.4 KiB — 84 ms — h2https://img.itch.zone/aW1hZ2UvMzc3NjkxNS8yMzg4MzU5NS5wbmc=/440x246%23c/lG%2Flo3.pngimg.itch.zone/aW1hZ2UvMzc3NjkxNS8yM... https://img.itch.zone/aW1hZ2UvMzc3NjkxNS8yMzg4MzU5NS5wbmc=/440x246%23c/lG%2Flo3.png — 200 — 30.8 KiB — 96 ms — h2https://img.itch.zone/aW1hZ2UvMzc3NjkxNS8yMzg4MzU5Ni5wbmc=/440x246%23c/jWCsGf.pngimg.itch.zone/aW1hZ2UvMzc3NjkxNS8yM... https://img.itch.zone/aW1hZ2UvMzc3NjkxNS8yMzg4MzU5Ni5wbmc=/440x246%23c/jWCsGf.png — 200 — 36.9 KiB — 91 ms — h2https://img.itch.zone/aW1hZ2UvMzc3NjkxNS8yMzg4MzU5Ny5wbmc=/440x246%23c/hxAKPz.pngimg.itch.zone/aW1hZ2UvMzc3NjkxNS8yM... https://img.itch.zone/aW1hZ2UvMzc3NjkxNS8yMzg4MzU5Ny5wbmc=/440x246%23c/hxAKPz.png — 200 — 31.1 KiB — 48 ms — h2https://itch.io/static/manifest.json/static/manifest.json https://itch.io/static/manifest.json — 200 — 533 B — 228 ms — h2https://static.itch.io/react.min.js?1776731319static.itch.io/react.min.js?1776731... https://static.itch.io/react.min.js?1776731319 — 200 — 50.5 KiB — 26 ms — h2https://www.googletagmanager.com/gtag/js?id=G-36R7NPBMLSwww.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-36R7NPBMLS — 200 — 148.7 KiB — 160 ms — h2data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='4' height='4'%3E%3Crect width='…www.w3.org/2000/svg' width='4' heig... data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='4' height='4'%3E%3Crect width='… — 200 — 0 B — 0 ms — datahttps://img.itch.zone/aW1hZ2UvMzc3NjkxNS8yMzg4MzU5NS5wbmc=/794x1000d/3iMoZb.pngimg.itch.zone/aW1hZ2UvMzc3NjkxNS8yM... https://img.itch.zone/aW1hZ2UvMzc3NjkxNS8yMzg4MzU5NS5wbmc=/794x1000d/3iMoZb.png — 200 — 9.5 KiB — 39 ms — h2https://i.ytimg.com/vi/beMSexprMNg/hqdefault.jpgi.ytimg.com/vi/beMSexprMNg/hqdefaul... https://i.ytimg.com/vi/beMSexprMNg/hqdefault.jpg — 200 — 15.8 KiB — 101 ms — h2https://static.itch.io/images/youtube_icon.svgstatic.itch.io/images/youtube_icon.... https://static.itch.io/images/youtube_icon.svg — 200 — 773 B — 23 ms — h2https://static.itch.io/images/youtube-bg.jpgstatic.itch.io/images/youtube-bg.jp... https://static.itch.io/images/youtube-bg.jpg — 200 — 24.4 KiB — 24 ms — h2https://static.itch.io/fonts/lato-v14-latin-regular.woff2static.itch.io/fonts/lato-v14-latin... https://static.itch.io/fonts/lato-v14-latin-regular.woff2 — 200 — 23.1 KiB — 47 ms — h2https://static.itch.io/fonts/lato-v14-latin-700.woff2static.itch.io/fonts/lato-v14-latin... https://static.itch.io/fonts/lato-v14-latin-700.woff2 — 200 — 22.6 KiB — 33 ms — h2https://static.itch.io/fonts/lato-v14-latin-900.woff2static.itch.io/fonts/lato-v14-latin... https://static.itch.io/fonts/lato-v14-latin-900.woff2 — 200 — 22.3 KiB — 31 ms — h2https://static.itch.io/icons/fonts/icomoon.ttf?4ibnvgstatic.itch.io/icons/fonts/icomoon.... https://static.itch.io/icons/fonts/icomoon.ttf?4ibnvg — 200 — 8.4 KiB — 48 ms — h2https://img.itch.zone/aW1nLzYxNzA1MDUucG5n/314x250%23cb/ef8y03.pngimg.itch.zone/aW1nLzYxNzA1MDUucG5n/... https://img.itch.zone/aW1nLzYxNzA1MDUucG5n/314x250%23cb/ef8y03.png — 200 — 58.1 KiB — 33 ms — h2https://img.itch.zone/aW1nLzE0Mjk1NDE5LnBuZw==/314x250%23cb/Vj3VIV.pngimg.itch.zone/aW1nLzE0Mjk1NDE5LnBuZ... https://img.itch.zone/aW1nLzE0Mjk1NDE5LnBuZw==/314x250%23cb/Vj3VIV.png — 200 — 47.3 KiB — 36 ms — h2https://img.itch.zone/aW1nLzIyMzI2NTU1LnBuZw==/314x250%23cb/C%2FuYOs.pngimg.itch.zone/aW1nLzIyMzI2NTU1LnBuZ... https://img.itch.zone/aW1nLzIyMzI2NTU1LnBuZw==/314x250%23cb/C%2FuYOs.png — 200 — 26.5 KiB — 48 ms — h2https://img.itch.zone/aW1nLzIyODA4MzYuanBn/314x250%23cb/1ofLV4.jpgimg.itch.zone/aW1nLzIyODA4MzYuanBn/... https://img.itch.zone/aW1nLzIyODA4MzYuanBn/314x250%23cb/1ofLV4.jpg — 200 — 56.8 KiB — 54 ms — h2https://img.itch.zone/aW1nLzExNjI4Njg3LnBuZw==/314x250%23cb/j7MnWw.pngimg.itch.zone/aW1nLzExNjI4Njg3LnBuZ... https://img.itch.zone/aW1nLzExNjI4Njg3LnBuZw==/314x250%23cb/j7MnWw.png — 200 — 45.3 KiB — 54 ms — h2https://img.itch.zone/aW1nLzE1OTE3OTk4LnBuZw==/314x250%23cb/6uhJDg.pngimg.itch.zone/aW1nLzE1OTE3OTk4LnBuZ... https://img.itch.zone/aW1nLzE1OTE3OTk4LnBuZw==/314x250%23cb/6uhJDg.png — 200 — 34.6 KiB — 54 ms — h2https://img.itch.zone/aW1nLzE0MDUwMDM1LnBuZw==/314x250%23cb/ME9WN4.pngimg.itch.zone/aW1nLzE0MDUwMDM1LnBuZ... https://img.itch.zone/aW1nLzE0MDUwMDM1LnBuZw==/314x250%23cb/ME9WN4.png — 200 — 37.0 KiB — 58 ms — h2https://img.itch.zone/aW1nLzIzMDUzMjg1LnBuZw==/314x250%23cb/1SCnAh.pngimg.itch.zone/aW1nLzIzMDUzMjg1LnBuZ... https://img.itch.zone/aW1nLzIzMDUzMjg1LnBuZw==/314x250%23cb/1SCnAh.png — 200 — 42.4 KiB — 59 ms — h2https://img.itch.zone/aW1nLzE3NDA2Mzg5LnBuZw==/314x250%23cb/PgS8TR.pngimg.itch.zone/aW1nLzE3NDA2Mzg5LnBuZ... https://img.itch.zone/aW1nLzE3NDA2Mzg5LnBuZw==/314x250%23cb/PgS8TR.png — 200 — 49.0 KiB — 62 ms — h2
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s FCP 3.2 s LCP 6.4 shttps://itch.io// https://itch.io/ — 200 — 18.7 KiB — 221 ms — h2https://static.itch.io/main.css?1776731319static.itch.io/main.css?1776731319 https://static.itch.io/main.css?1776731319 — 200 — 86.3 KiB — 85 ms — h2https://static.itch.io/lib.min.js?1776731319static.itch.io/lib.min.js?177673131... https://static.itch.io/lib.min.js?1776731319 — 200 — 44.1 KiB — 63 ms — h2https://static.itch.io/index.min.js?1776731319static.itch.io/index.min.js?1776731... https://static.itch.io/index.min.js?1776731319 — 200 — 34.1 KiB — 84 ms — h2https://static.itch.io/images/logo-black-new.svgstatic.itch.io/images/logo-black-ne... https://static.itch.io/images/logo-black-new.svg — 200 — 2.2 KiB — 64 ms — h2https://static.itch.io/images/itchio-textless-black.svgstatic.itch.io/images/itchio-textle... https://static.itch.io/images/itchio-textless-black.svg — 200 — 1.4 KiB — 84 ms — h2https://img.itch.zone/aW1hZ2UvMzc3NjkxNS8yMzg4MzU5NS5wbmc=/440x246%23c/lG%2Flo3.pngimg.itch.zone/aW1hZ2UvMzc3NjkxNS8yM... https://img.itch.zone/aW1hZ2UvMzc3NjkxNS8yMzg4MzU5NS5wbmc=/440x246%23c/lG%2Flo3.png — 200 — 30.8 KiB — 96 ms — h2https://img.itch.zone/aW1hZ2UvMzc3NjkxNS8yMzg4MzU5Ni5wbmc=/440x246%23c/jWCsGf.pngimg.itch.zone/aW1hZ2UvMzc3NjkxNS8yM... https://img.itch.zone/aW1hZ2UvMzc3NjkxNS8yMzg4MzU5Ni5wbmc=/440x246%23c/jWCsGf.png — 200 — 36.9 KiB — 91 ms — h2https://img.itch.zone/aW1hZ2UvMzc3NjkxNS8yMzg4MzU5Ny5wbmc=/440x246%23c/hxAKPz.pngimg.itch.zone/aW1hZ2UvMzc3NjkxNS8yM... https://img.itch.zone/aW1hZ2UvMzc3NjkxNS8yMzg4MzU5Ny5wbmc=/440x246%23c/hxAKPz.png — 200 — 31.1 KiB — 48 ms — h2https://itch.io/static/manifest.json/static/manifest.json https://itch.io/static/manifest.json — 200 — 533 B — 228 ms — h2https://static.itch.io/react.min.js?1776731319static.itch.io/react.min.js?1776731... https://static.itch.io/react.min.js?1776731319 — 200 — 50.5 KiB — 26 ms — h2https://www.googletagmanager.com/gtag/js?id=G-36R7NPBMLSwww.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-36R7NPBMLS — 200 — 148.7 KiB — 160 ms — h2data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='4' height='4'%3E%3Crect width='…www.w3.org/2000/svg' width='4' heig... data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='4' height='4'%3E%3Crect width='… — 200 — 0 B — 0 ms — datahttps://img.itch.zone/aW1hZ2UvMzc3NjkxNS8yMzg4MzU5NS5wbmc=/794x1000d/3iMoZb.pngimg.itch.zone/aW1hZ2UvMzc3NjkxNS8yM... https://img.itch.zone/aW1hZ2UvMzc3NjkxNS8yMzg4MzU5NS5wbmc=/794x1000d/3iMoZb.png — 200 — 9.5 KiB — 39 ms — h2https://i.ytimg.com/vi/beMSexprMNg/hqdefault.jpgi.ytimg.com/vi/beMSexprMNg/hqdefaul... https://i.ytimg.com/vi/beMSexprMNg/hqdefault.jpg — 200 — 15.8 KiB — 101 ms — h2https://static.itch.io/images/youtube_icon.svgstatic.itch.io/images/youtube_icon.... https://static.itch.io/images/youtube_icon.svg — 200 — 773 B — 23 ms — h2https://static.itch.io/images/youtube-bg.jpgstatic.itch.io/images/youtube-bg.jp... https://static.itch.io/images/youtube-bg.jpg — 200 — 24.4 KiB — 24 ms — h2https://static.itch.io/fonts/lato-v14-latin-regular.woff2static.itch.io/fonts/lato-v14-latin... https://static.itch.io/fonts/lato-v14-latin-regular.woff2 — 200 — 23.1 KiB — 47 ms — h2https://static.itch.io/fonts/lato-v14-latin-700.woff2static.itch.io/fonts/lato-v14-latin... https://static.itch.io/fonts/lato-v14-latin-700.woff2 — 200 — 22.6 KiB — 33 ms — h2https://static.itch.io/fonts/lato-v14-latin-900.woff2static.itch.io/fonts/lato-v14-latin... https://static.itch.io/fonts/lato-v14-latin-900.woff2 — 200 — 22.3 KiB — 31 ms — h2https://static.itch.io/icons/fonts/icomoon.ttf?4ibnvgstatic.itch.io/icons/fonts/icomoon.... https://static.itch.io/icons/fonts/icomoon.ttf?4ibnvg — 200 — 8.4 KiB — 48 ms — h2https://img.itch.zone/aW1nLzYxNzA1MDUucG5n/314x250%23cb/ef8y03.pngimg.itch.zone/aW1nLzYxNzA1MDUucG5n/... 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https://img.itch.zone/aW1nLzQ1MDk2MzAuanBn/314x250%23cb/SmmoLt.jpg — 200 — 45.4 KiB — 62 ms — h2https://region1.google-analytics.com/g/collect?v=2&tid=G-36R7NPBMLS&gtm=45je64h1v9118235811za200zd9118235811&_p=1776799920129&gcd=13l3lPl2l1l1&npa=1&dma_cps=a&dma=1&are=1&cid=1512912993.1776799920&frm=0&pscdl=noapi&rcb=5&sr=412x823&uaa=&uab=64&uafvl=Chromium%3B147.0.7727.101%7CNot.A%252FBrand%3B8.0.0.0&uam=moto%20g%20power%20(2022)&uamb=1&uap=Android&uapv=11.0&uaw=0&ul=en-us&_s=1&tag_exp=0~115938465~115938468~117266400~118167059&sid=1776799920&sct=1&seg=0&dl=https%3A%2F%2Fitch.io%2F&dt=Download%20the%20latest%20indie%20games%20-%20itch.io&en=page_view&_fv=1&_nsi=1&_ss=1&_ee=1&tfd=583region1.google-analytics.com/g/coll... https://region1.google-analytics.com/g/collect?v=2&tid=G-36R7NPBMLS&gtm=45je64h1v9118235811za200zd9118235811&_p=1776799920129&gcd=13l3lPl2l1l1&npa=1&dma_cps=a&dma=1&are=1&cid=1512912993.1776799920&frm=0&pscdl=noapi&rcb=5&sr=412x823&uaa=&uab=64&uafvl=Chromium%3B147.0.7727.101%7CNot.A%252FBrand%3B8.0.0.0&uam=moto%20g%20power%20(2022)&uamb=1&uap=Android&uapv=11.0&uaw=0&ul=en-us&_s=1&tag_exp=0~115938465~115938468~117266400~118167059&sid=1776799920&sct=1&seg=0&dl=https%3A%2F%2Fitch.io%2F&dt=Download%20the%20latest%20indie%20games%20-%20itch.io&en=page_view&_fv=1&_nsi=1&_ss=1&_ee=1&tfd=583 — 204 — 543 B — 73 ms — h2https://itch.io/favicon.ico/favicon.ico https://itch.io/favicon.ico — 200 — 1.9 KiB — 28 ms — h2https://itch.io/static/images/itchio-square-144.png/static/images/itchio-square-144.pn... https://itch.io/static/images/itchio-square-144.png — 200 — 3.5 KiB — 26 ms — h2https://itch.io/ca.gif?x=t1s6o1F28yab&s=3%3A1/ca.gif?x=t1s6o1F28yab&s=3%3A1 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HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
78% of JavaScript execution is third-party
First-party Third-party 945ms · 277KB · £10/mo
static.itch.io
Other
Costly
Execution 304ms
Transfer 34 KB
Unused 69%
Monthly Cost £3/mo
Unattributable
Other
Costly
Execution 211ms
Transfer 0 KB
Monthly Cost £2/mo
Google Tag Manager
Tag Manager
Costly
Execution 210ms
Transfer 149 KB
Unused 41%
Monthly Cost £2/mo
static.itch.io
Other
Optional
Execution 143ms
Transfer 44 KB
Unused 52%
Monthly Cost £1/mo
static.itch.io
Other
Optional
Execution 76ms
Transfer 51 KB
Unused 43%
Monthly Cost £1/mo

These scripts may cost more than they're worth

  • static.itch.io adds 304ms and costs ~£3/month
  • Unattributable adds 211ms and costs ~£2/month
  • Google Tag Manager adds 210ms and costs ~£2/month

78% 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

static.itch.io takes 304ms 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

69% of static.itch.io's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

Unattributable takes 211ms 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

Google Tag Manager takes 210ms 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

52% of static.itch.io's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

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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