Performance
· 15 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.
1.76 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
4.23 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
1.46 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.018
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
3.08 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.
6.31 s
Page Load Progression
FPage Weight BudgetAction4.3 MB transferred, 207 requestsFIX
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
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
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 ImpactAction100% third-party, 0 ms blockingFIX
FJS Execution CostAction5245ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.metacritic.com/a/neutron/nodev4/_nuxt4/COMbpNaR.js | 2049ms | 1878ms | 2ms | 3rd |
| Unattributable | 1192ms | 822ms | 0ms | 3rd |
| https://www.metacritic.com/ | 753ms | 63ms | 4ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-PWVTCD9 | 336ms | 290ms | 17ms | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202510.1.0/otTCF.js | 212ms | 185ms | 2ms | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202510.1.0/otBannerSdk.js | 139ms | 80ms | 16ms | 3rd |
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604160201/pubads_impl.js?cb=31097945 | 121ms | 100ms | 20ms | 3rd |
| https://script.wikia.nocookie.net/fandom-ae-assets/odyssey/identity-engine/production/main.js | 89ms | 0ms | 0ms | 3rd |
| https://www.metacritic.com/cdn-cgi/challenge-platform/scripts/jsd/main.js | 77ms | 74ms | 1ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-FQJ00EBFF9&cx=c>m=4e64h1 | 73ms | 57ms | 15ms | 3rd |
Showing top 10 of 13 scripts
FJS BundlesAction85 scripts, 991 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.metacritic.com/a/neutron/nodev4/_nuxt4/COMbpNaR.js | 469 KB | 241 KB (51%) | ✓ | 3rd |
| https://script.wikia.nocookie.net/fandom-ae-assets/odyssey/prebid/production/main.js | 172 KB | 136 KB (79%) | ✓ | 3rd |
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604160201/pubads_impl.js?cb=31097945 | 188 KB | 130 KB (69%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-FQJ00EBFF9&cx=c>m=4e64h1 | 156 KB | 77 KB (49%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-HLJ6XDCTMV&cx=c>m=4e64h1 | 154 KB | 74 KB (48%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-NR9LWXM8>m=4e64h1 | 113 KB | 65 KB (58%) | ✓ | 3rd |
| https://www.metacritic.com/a/neutron/nodev4/_nuxt4/7_UPIt3N.js | 70 KB | 65 KB (92%) | ✓ | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202510.1.0/otBannerSdk.js | 123 KB | 58 KB (47%) | ✓ | 3rd |
| https://c.amazon-adsystem.com/aax2/apstag.js | 91 KB | 58 KB (64%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-PWVTCD9 | 145 KB | 54 KB (37%) | ✓ | 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 InventoryAction207 resources · 4.3 MB · 991 KB savings availableFIX
~990.6 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 207 resources | 4.3 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization85 images, 0 KB saveableREVIEW
A+Text CompressionAll text resources are compressedPASS
A+Font Loading6 fonts (131 KB)PASS
Web fonts
6
131 KB total
Render-blocking
0
of 6
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Convert to woff2 for ~30% smaller file size
- 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 ~15 KB and ~30 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
Network Waterfall207 requests over 8309msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.metacritic.com www.metacritic.com | Other | 2049ms | 469 KB | 51% | €22/mo | Costly |
Unattributable Unattributable | Other | 1192ms | 0 KB | — | €13/mo | Costly |
www.metacritic.com www.metacritic.com | Other | 753ms | 208 KB | — | €8/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 336ms | 145 KB | 37% | €4/mo | Costly |
OneTrust cdn.cookielaw.org | Consent | 212ms | 18 KB | — | €2/mo | Essential |
OneTrust cdn.cookielaw.org | Consent | 139ms | 123 KB | 47% | €2/mo | Essential |
securepubads.g.doubleclick.net securepubads.g.doubleclick.net | Other | 121ms | 188 KB | 69% | €1/mo | Optional |
script.wikia.nocookie.net script.wikia.nocookie.net | Other | 89ms | 32 KB | — | €1/mo | Optional |
www.metacritic.com www.metacritic.com | Other | 77ms | 0 KB | — | €1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 73ms | 156 KB | 49% | €1/mo | Optional |
cdn-magiclinks.trackonomics.net cdn-magiclinks.trackonomics.net | Other | 72ms | 30 KB | — | €1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 72ms | 154 KB | 48% | €1/mo | Optional |
script.wikia.nocookie.net script.wikia.nocookie.net | Other | 61ms | 60 KB | 56% | €1/mo | Optional |
These scripts may cost more than they're worth
- www.metacritic.com adds 2049ms and costs ~€22/month
- Unattributable adds 1192ms and costs ~€13/month
- www.metacritic.com adds 753ms and costs ~€8/month
- Google Tag Manager adds 336ms and costs ~€4/month
100% 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
www.metacritic.com takes 2049ms 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
51% of www.metacritic.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 1192ms 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
www.metacritic.com takes 753ms 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
Google Tag Manager takes 336ms 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
69% of securepubads.g.doubleclick.net'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
56% of script.wikia.nocookie.net'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