Performance
· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
7.95 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
27.02 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
1.33 s
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.
10.11 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.
28.41 s
Page Load Progression
FPage Weight BudgetAction8.3 MB transferred, 113 requestsFIX
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.
Source: web.dev
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.
Source: web.dev
Subset fonts to include only used characters, or switch to system font stacks.
Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).
Source: web.dev font loading
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.
Source: web.dev
DThird-Party ImpactAction99% third-party, 0 ms blockingFIX
FJS Execution CostAction5703ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://community.fastly.steamstatic.com/public/javascript/apphub_home.js?v=Wrx8P7TKQqiT&l=english&_cdn=fastly | 1403ms | 222ms | 1ms | 3rd |
| https://community.fastly.steamstatic.com/public/javascript/applications/community/main.js?v=58dVzUNXI1kF&l=english&_cdn=fastly | 1074ms | 584ms | 488ms | 3rd |
| Unattributable | 1045ms | 7ms | 0ms | 3rd |
| https://community.fastly.steamstatic.com/public/javascript/applications/community/libraries~b28b7af69.js?v=tSE0ctzNy1Q7&l=english&_cdn=fastly | 539ms | 292ms | 224ms | 3rd |
| https://community.fastly.steamstatic.com/public/javascript/jquery-1.11.1.min.js?v=gQHVlrK4-jX-&l=english&_cdn=fastly | 376ms | 174ms | 9ms | 3rd |
| https://steamcommunity.com/ | 320ms | 13ms | 7ms | 1st |
| https://community.fastly.steamstatic.com/public/javascript/prototype-1.7.js?v=npJElBnrEO6W&l=english&_cdn=fastly | 219ms | 61ms | 81ms | 3rd |
| https://community.fastly.steamstatic.com/public/javascript/applications/community/localization/sales_english-json.js?contenthash=14e69d1ef0569f7a3dde | 203ms | 163ms | 39ms | 3rd |
| https://community.fastly.steamstatic.com/public/javascript/applications/community/localization/main_english-json.js?contenthash=346ca9f46e6e4b2d8bbd | 183ms | 150ms | 33ms | 3rd |
| https://community.fastly.steamstatic.com/public/javascript/applications/community/localization/shared_english-json.js?contenthash=45a72160556c01b98702 | 180ms | 151ms | 28ms | 3rd |
Showing top 10 of 12 scripts
FJS BundlesAction27 scripts, 559 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://community.fastly.steamstatic.com/public/javascript/applications/community/main.js?v=58dVzUNXI1kF&l=english&_cdn=fastly | 328 KB | 282 KB (86%) | ✓ | 3rd |
| https://community.fastly.steamstatic.com/public/javascript/applications/community/libraries~b28b7af69.js?v=tSE0ctzNy1Q7&l=english&_cdn=fastly | 164 KB | 95 KB (58%) | ✓ | 3rd |
| https://community.fastly.steamstatic.com/public/javascript/applications/community/chunk~c7a3fa389.js?contenthash=e6a2cf2b8a21dee3041b | 51 KB | 47 KB (91%) | ✓ | 3rd |
| https://community.fastly.steamstatic.com/public/shared/javascript/shared_global.js?v=74PhtZvVZD8D&l=english&_cdn=fastly | 38 KB | 32 KB (86%) | ✗ | 3rd |
| https://community.fastly.steamstatic.com/public/javascript/applications/community/libraries~4b330692b.js?contenthash=c84b397ca15d91c97354 | 41 KB | 31 KB (75%) | ✓ | 3rd |
| https://community.fastly.steamstatic.com/public/javascript/applications/community/chunk~4b330692b.js?contenthash=8a4200d26cc2e2935526 | 33 KB | 29 KB (88%) | ✓ | 3rd |
| https://community.fastly.steamstatic.com/public/javascript/scriptaculous/_combined.js?v=pbdAKOcDIgbC&l=english&_cdn=fastly&load=effects,controls,slider,dragdrop | 28 KB | 23 KB (85%) | ✗ | 3rd |
| https://community.fastly.steamstatic.com/public/javascript/prototype-1.7.js?v=npJElBnrEO6W&l=english&_cdn=fastly | 36 KB | 21 KB (57%) | ✗ | 3rd |
| https://community.fastly.steamstatic.com/public/javascript/user_reviews_community.js?v=dl1kGhOk_Ls8&l=english&_cdn=fastly | 1 KB | — | ✓ | 3rd |
| https://community.fastly.steamstatic.com/public/javascript/applications/community/localization/loyaltyrewards_manifest.js?v=0TlabJvDa5nf&l=english&_cdn=fastly | 1 KB | — | ✓ | 3rd |
Consider code splitting or tree shaking to reduce unused code.
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.
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.
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.
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.
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
FPage Weight InventoryAction113 resources · 8.3 MB · 559 KB savings availableFIX
~559.2 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 113 resources | 8.3 MiB | ||||||
CImage OptimizationAction65 images, 0 KB saveableREVIEW
Set explicit width and height to prevent CLS.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
BHTTP Cachingno-cacheREVIEW
no-cache
| Directive | Value | Meaning |
|---|---|---|
| no-cache | — | Cache but always revalidate first |
A+Text CompressionAll text resources are compressedPASS
A+Font Loading3 fonts (357 KB)PASS
Web fonts
3
357 KB total
Render-blocking
0
of 3
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- 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 ~286 KB and ~572 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall113 requests over 1625msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
community.fastly.steamstatic.com community.fastly.steamstatic.com | Other | 1403ms | 3 KB | — | $19/mo | Costly |
community.fastly.steamstatic.com community.fastly.steamstatic.com | Other | 1074ms | 328 KB | 86% | $14/mo | Costly |
Unattributable Unattributable | Other | 1045ms | 0 KB | — | $14/mo | Costly |
community.fastly.steamstatic.com community.fastly.steamstatic.com | Other | 539ms | 164 KB | 58% | $7/mo | Costly |
community.fastly.steamstatic.com community.fastly.steamstatic.com | Other | 376ms | 33 KB | — | $5/mo | Costly |
community.fastly.steamstatic.com community.fastly.steamstatic.com | Other | 219ms | 36 KB | 57% | $3/mo | Costly |
community.fastly.steamstatic.com community.fastly.steamstatic.com | Other | 203ms | 230 KB | — | $3/mo | Costly |
community.fastly.steamstatic.com community.fastly.steamstatic.com | Other | 183ms | 269 KB | — | $2/mo | Optional |
community.fastly.steamstatic.com community.fastly.steamstatic.com | Other | 180ms | 256 KB | — | $2/mo | Optional |
community.fastly.steamstatic.com community.fastly.steamstatic.com | Other | 107ms | 11 KB | — | $1/mo | Optional |
community.fastly.steamstatic.com community.fastly.steamstatic.com | Other | 53ms | 33 KB | 88% | $1/mo | Optional |
These scripts may cost more than they're worth
- community.fastly.steamstatic.com adds 1403ms and costs ~$19/month
- community.fastly.steamstatic.com adds 1074ms and costs ~$14/month
- Unattributable adds 1045ms and costs ~$14/month
- community.fastly.steamstatic.com adds 539ms and costs ~$7/month
- community.fastly.steamstatic.com adds 376ms and costs ~$5/month
- community.fastly.steamstatic.com adds 219ms and costs ~$3/month
- community.fastly.steamstatic.com adds 203ms and costs ~$3/month
94% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.
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
community.fastly.steamstatic.com takes 1403ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
community.fastly.steamstatic.com takes 1074ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
86% of community.fastly.steamstatic.com's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
Unattributable takes 1045ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
community.fastly.steamstatic.com takes 539ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
58% of community.fastly.steamstatic.com's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
community.fastly.steamstatic.com takes 376ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
community.fastly.steamstatic.com takes 219ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
57% of community.fastly.steamstatic.com's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
community.fastly.steamstatic.com takes 203ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
88% of community.fastly.steamstatic.com's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev