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Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
75
GRADE
C
FIX
4
REVIEW
3
PASS
6
INFO
2

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

Mobile Desktop
90
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
61
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.

963 ms

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

1.76 s

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

28 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.

1.53 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.

1.76 s

Page Load Progression

432 ms
863 ms
1.3 s
1.7 s
2.2 s
2.6 s
3.0 s
3.5 s
Checks
15
6 PASS 3 REVIEW 4 FIX
F
Page Weight Budget
Action
3.8 MB transferred, 26 requests
FIX
3.8 MB transferred, 26 requests
Warning::
Page weighs 4.9 MB (3.8 MB transferred)
Info::
26 HTTP requests
Info::
Estimated 0.79 g CO2 per page load
3.8 MB / 2.4 MB budget
3.8 MB transferred
26 requests
0.79 g CO2 per page load
Other 3.1 MiB 81%
JavaScript 402.2 KiB 10%
Images 210.6 KiB 5%
Fonts 116.2 KiB 3%
CSS 7.3 KiB 0%
HTML 4.1 KiB 0%
Other 1.4 KiB 0%
0 2.4 MB 4.9 MB
Over budget
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 (3.8 MiB of 3.8 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
Page Weight Inventory
Action
26 resources · 3.8 MB · 262 KB savings available
FIX
26 resources · 3.8 MB · 262 KB savings available
Warning::
Page weight 2.8 MB over 1MB target
Got: 3.8 MB Expected: ≤ 1 MB
Info::
~262 KB of savings available
Warning::
25 third-party resources (100% of weight)
Info::
2 resources over 200KB
26 resources · 3.8 MiB · 25 third-party 2.8 MiB over 1MB target
Media 81% · 3.1 MiB
JavaScript 10% · 402.2 KiB
Image 5% · 211.6 KiB
Font 3% · 116.2 KiB
CSS 0% · 7.3 KiB
Document 0% · 4.5 KiB

~262.3 KiB of savings available

Remove unused JavaScript: 262.3 KiB
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
6 images, 0 KB saveable
REVIEW
6 images, 0 KB saveable
Warning::
https://cdn.akamai.steamstatic.com/valvesoftware/i... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdn.akamai.steamstatic.com/valvesoftware/i... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
6 images 211 KB
0 oversized -0 KB
6 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

C
JS Bundles
Action
5 scripts, 262 KB unused
REVIEW
5 scripts, 262 KB unused
Warning::
https://www.gstatic.com/recaptcha/releases/gTpTIWh...: 242 KB unused (67%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.valvesoftware.com/en/public/shared/jav...: 20 KB unused (62%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 262 KB
262 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js362 KB242 KB (67%)✓3rd
https://www.valvesoftware.com/en/public/shared/javascript/jquery-1.8.3.min.js?v=NXam5zydzNu8&_cdn=akamai33 KB20 KB (62%)✓3rd
https://www.valvesoftware.com/en/public/javascript/valvesoftware.js?v=Yw_MCZWiaUD0&_cdn=akamai3 KB—✓3rd
https://www.valvesoftware.com/en/public/javascript/jobs.js?v=KKAPM5KmPVH7&_cdn=akamai3 KB—✓3rd
https://www.google.com/recaptcha/api.js1 KB—✓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

C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

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+
JS Execution Cost
323ms total JS execution
PASS
323ms total JS execution
Info::
Unattributable: 126ms CPU time
Info::
https://www.valvesoftware.com/en/: 119ms CPU time
Info::
https://www.gstatic.com/recaptcha/releases/gTpTIWh...: 79ms CPU time
Warning::
Third-party scripts: 323ms (100% of total)

Main Thread Breakdown

Other 38% Style & Layout 27% Script Evaluation 19% Script Parsing & Compilation 11%
ScriptTotalScriptingParse/CompileParty
Unattributable126ms5ms0ms3rd
https://www.valvesoftware.com/en/119ms1ms0ms3rd
https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js79ms42ms37ms3rd
A+
Font Loading
4 fonts (116 KB)
PASS
4 fonts (116 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

116 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 500 ms 1.0 s 1.5 s FCP 963 ms LCP 1.8 shttps://www.valvesoftware.com/public/css/fonts/apercu-medium.WOFFapercu-medium.WOFF https://www.valvesoftware.com/public/css/fonts/apercu-medium.WOFF — 29.3 KiB — 383 ms — font-display: swaphttps://www.valvesoftware.com/public/css/fonts/apercu-black.WOFFapercu-black.WOFF https://www.valvesoftware.com/public/css/fonts/apercu-black.WOFF — 29.4 KiB — 190 ms — font-display: swaphttps://www.valvesoftware.com/public/css/fonts/apercu-regular.WOFFapercu-regular.WOFF https://www.valvesoftware.com/public/css/fonts/apercu-regular.WOFF — 28.8 KiB — 200 ms — font-display: swaphttps://www.valvesoftware.com/public/css/fonts/apercu-bold.WOFFapercu-bold.WOFF https://www.valvesoftware.com/public/css/fonts/apercu-bold.WOFF — 28.8 KiB — 352 ms — font-display: swap
apercu-medium.WOFF woff swap
Size 29 KB
Load time 383 ms
Start 721 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
apercu-black.WOFF woff swap
Size 29 KB
Load time 190 ms
Start 722 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
apercu-regular.WOFF woff swap
Size 29 KB
Load time 200 ms
Start 724 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
apercu-bold.WOFF woff swap
Size 29 KB
Load time 352 ms
Start 725 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 ~35 KB and ~70 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
Network Waterfall
26 requests over 1139ms
INFO
0 ms 500 ms 1.0 s 1.5 s FCP 963 ms LCP 1.8 shttps://valvesoftware.com// https://valvesoftware.com/ — 302 — 198 B — 183 ms — http/1.1https://www.valvesoftware.com/www.valvesoftware.com/ https://www.valvesoftware.com/ — 302 — 190 B — 197 ms — http/1.1https://www.valvesoftware.com/en/www.valvesoftware.com/en/ https://www.valvesoftware.com/en/ — 200 — 4.1 KiB — 190 ms — http/1.1https://www.valvesoftware.com/public/css/global.css?v=lmcEcZ-F-ilx&_cdn=akamaiwww.valvesoftware.com/public/css/gl... https://www.valvesoftware.com/public/css/global.css?v=lmcEcZ-F-ilx&_cdn=akamai — 200 — 3.2 KiB — 19 ms — http/1.1https://www.valvesoftware.com/public/css/fonts.css?v=xSaYcfyOLADT&_cdn=akamaiwww.valvesoftware.com/public/css/fo... https://www.valvesoftware.com/public/css/fonts.css?v=xSaYcfyOLADT&_cdn=akamai — 200 — 708 B — 29 ms — http/1.1https://www.valvesoftware.com/public/css/forms.css?v=50QYppCbB4ar&_cdn=akamaiwww.valvesoftware.com/public/css/fo... https://www.valvesoftware.com/public/css/forms.css?v=50QYppCbB4ar&_cdn=akamai — 200 — 1.5 KiB — 47 ms — http/1.1https://www.valvesoftware.com/public/css/jobs.css?v=Gwqg1pBmxEi2&_cdn=akamaiwww.valvesoftware.com/public/css/jo... https://www.valvesoftware.com/public/css/jobs.css?v=Gwqg1pBmxEi2&_cdn=akamai — 200 — 1.9 KiB — 39 ms — http/1.1https://www.valvesoftware.com/en/public/shared/javascript/jquery-1.8.3.min.js?v=NXam5zydzNu8&_cdn=akamaiwww.valvesoftware.com/en/public/sha... https://www.valvesoftware.com/en/public/shared/javascript/jquery-1.8.3.min.js?v=NXam5zydzNu8&_cdn=akamai — 200 — 33.0 KiB — 35 ms — http/1.1https://www.valvesoftware.com/en/public/javascript/valvesoftware.js?v=Yw_MCZWiaUD0&_cdn=akamaiwww.valvesoftware.com/en/public/jav... https://www.valvesoftware.com/en/public/javascript/valvesoftware.js?v=Yw_MCZWiaUD0&_cdn=akamai — 200 — 3.0 KiB — 44 ms — http/1.1https://www.valvesoftware.com/en/public/javascript/jobs.js?v=KKAPM5KmPVH7&_cdn=akamaiwww.valvesoftware.com/en/public/jav... https://www.valvesoftware.com/en/public/javascript/jobs.js?v=KKAPM5KmPVH7&_cdn=akamai — 200 — 2.9 KiB — 38 ms — http/1.1https://www.google.com/recaptcha/api.jswww.google.com/recaptcha/api.js https://www.google.com/recaptcha/api.js — 200 — 1012 B — 25 ms — h3https://cdn.akamai.steamstatic.com/valvesoftware/images/videos/hero_01_fullsize.jpgcdn.akamai.steamstatic.com/valvesof... https://cdn.akamai.steamstatic.com/valvesoftware/images/videos/hero_01_fullsize.jpg — 200 — 49.0 KiB — 31 ms — http/1.1https://cdn.akamai.steamstatic.com/valvesoftware/images/videos/hero_02_fullsize.jpgcdn.akamai.steamstatic.com/valvesof... https://cdn.akamai.steamstatic.com/valvesoftware/images/videos/hero_02_fullsize.jpg — 200 — 71.8 KiB — 42 ms — http/1.1https://cdn.akamai.steamstatic.com/valvesoftware/images/videos/hero_03_fullsize.jpgcdn.akamai.steamstatic.com/valvesof... https://cdn.akamai.steamstatic.com/valvesoftware/images/videos/hero_03_fullsize.jpg — 200 — 80.6 KiB — 19 ms — http/1.1https://cdn.akamai.steamstatic.com/valvesoftware/images/steam_logo_footer.pngcdn.akamai.steamstatic.com/valvesof... https://cdn.akamai.steamstatic.com/valvesoftware/images/steam_logo_footer.png — 200 — 3.6 KiB — 6 ms — http/1.1https://cdn.akamai.steamstatic.com/valvesoftware/images/steamworks_logo_footer.pngcdn.akamai.steamstatic.com/valvesof... https://cdn.akamai.steamstatic.com/valvesoftware/images/steamworks_logo_footer.png — 200 — 3.6 KiB — 8 ms — http/1.1https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.jswww.gstatic.com/recaptcha/releases/... https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js — 200 — 362.4 KiB — 42 ms — h2https://cdn.akamai.steamstatic.com/valvesoftware/images/search.pngcdn.akamai.steamstatic.com/valvesof... https://cdn.akamai.steamstatic.com/valvesoftware/images/search.png — 200 — 1.8 KiB — 8 ms — http/1.1https://www.valvesoftware.com/public/css/fonts/apercu-medium.WOFFwww.valvesoftware.com/public/css/fo... https://www.valvesoftware.com/public/css/fonts/apercu-medium.WOFF — 200 — 29.3 KiB — 383 ms — http/1.1https://www.valvesoftware.com/public/css/fonts/apercu-black.WOFFwww.valvesoftware.com/public/css/fo... https://www.valvesoftware.com/public/css/fonts/apercu-black.WOFF — 200 — 29.4 KiB — 190 ms — http/1.1https://www.valvesoftware.com/public/css/fonts/apercu-regular.WOFFwww.valvesoftware.com/public/css/fo... https://www.valvesoftware.com/public/css/fonts/apercu-regular.WOFF — 200 — 28.8 KiB — 200 ms — http/1.1https://www.valvesoftware.com/public/css/fonts/apercu-bold.WOFFwww.valvesoftware.com/public/css/fo... https://www.valvesoftware.com/public/css/fonts/apercu-bold.WOFF — 200 — 28.8 KiB — 352 ms — http/1.1https://cdn.akamai.steamstatic.com/valvesoftware/images/videos/hero_01_fullsize.webmcdn.akamai.steamstatic.com/valvesof... https://cdn.akamai.steamstatic.com/valvesoftware/images/videos/hero_01_fullsize.webm — 206 — 3.0 MiB — 414 ms — http/1.1https://cdn.akamai.steamstatic.com/valvesoftware/images/videos/hero_02_fullsize.webmcdn.akamai.steamstatic.com/valvesof... https://cdn.akamai.steamstatic.com/valvesoftware/images/videos/hero_02_fullsize.webm — 206 — 292 B — 115 ms — http/1.1https://cdn.akamai.steamstatic.com/valvesoftware/images/videos/hero_03_fullsize.webmcdn.akamai.steamstatic.com/valvesof... https://cdn.akamai.steamstatic.com/valvesoftware/images/videos/hero_03_fullsize.webm — 206 — 33.9 KiB — 114 ms — http/1.1https://cdn.akamai.steamstatic.com/valvesoftware/images/favicon.icocdn.akamai.steamstatic.com/valvesof... https://cdn.akamai.steamstatic.com/valvesoftware/images/favicon.ico — 200 — 1.0 KiB — 11 ms — http/1.1
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 323ms · 366KB · €4/mo
Unattributable
Other
Optional
Execution 126ms
Transfer 0 KB
Monthly Cost €1/mo
www.valvesoftware.com
Other
Optional
Execution 119ms
Transfer 4 KB
Monthly Cost €1/mo
www.gstatic.com
Other
Optional
Execution 79ms
Transfer 362 KB
Unused 67%
Monthly Cost €1/mo

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

67% of www.gstatic.com'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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