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.
8.53 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
22.79 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
1.65 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.002
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
11.30 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.
23.12 s
Page Load Progression
FPage Weight BudgetAction6.8 MB transferred, 111 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
Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.
CSS bundle is large — purge unused styles (PurgeCSS, Tailwind JIT) to reduce CSS payload.
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 ImpactAction100% third-party, 0 ms blockingFIX
FJS Execution CostAction5829ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://cdn.prod.website-files.com/6257adef93867e50d84d30e2/js/discord-2022.21ea14ec.2e6c1897bdf09884.js | 1513ms | 1119ms | 0ms | 3rd |
| Unattributable | 1238ms | 61ms | 0ms | 3rd |
| https://discord.com/w/assets/10907dcf2b5e3687b658036d0f4dea64aa95512c/index-consolidated.js | 1170ms | 828ms | 119ms | 3rd |
| https://cdn.prod.website-files.com/6257adef93867e50d84d30e2/js/discord-2022.schunk.1e64919c9d70b000.js | 527ms | 10ms | 493ms | 3rd |
| https://discord.com/cdn-cgi/challenge-platform/scripts/jsd/main.js | 246ms | 231ms | 3ms | 3rd |
| https://discord.com/ | 229ms | 60ms | 5ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-N7BVC2W>m_auth=GI0g9O-54_SitcgmxQKxlA>m_preview=env-2>m_cookies_win=x | 167ms | 128ms | 38ms | 3rd |
| https://discord.com/assets/oneTrust/v7/scripttemplates/202501.2.0/otBannerSdk.js | 145ms | 65ms | 45ms | 3rd |
| https://cdn.prod.website-files.com/6257adef93867e50d84d30e2/css/discord-2022.shared.591f5e2e4.min.css | 144ms | 0ms | 0ms | 3rd |
| https://d3e54v103j8qbb.cloudfront.net/js/jquery-3.5.1.min.dc5e7f18c8.js?site=6257adef93867e50d84d30e2 | 139ms | 108ms | 10ms | 3rd |
Showing top 10 of 13 scripts
FJS BundlesAction23 scripts, 553 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://discord.com/w/assets/10907dcf2b5e3687b658036d0f4dea64aa95512c/index-consolidated.js | 374 KB | 192 KB (53%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-N7BVC2W>m_auth=GI0g9O-54_SitcgmxQKxlA>m_preview=env-2>m_cookies_win=x | 147 KB | 86 KB (59%) | ✓ | 3rd |
| https://discord.com/assets/oneTrust/v7/scripttemplates/202501.2.0/otBannerSdk.js | 109 KB | 68 KB (62%) | ✓ | 3rd |
| https://discord.com/w/assets/latest/671.js | 98 KB | 65 KB (67%) | ✓ | 3rd |
| https://discord.com/w/assets/latest/loginOrDownload.js | 73 KB | 48 KB (69%) | ✓ | 3rd |
| https://cdn.prod.website-files.com/6257adef93867e50d84d30e2/js/discord-2022.schunk.c42549641b7d4501.js | 76 KB | 46 KB (61%) | ✓ | 3rd |
| https://discord.com/w/assets/latest/52.js | 51 KB | 28 KB (63%) | ✓ | 3rd |
| https://cdn.localizeapi.com/localize.js | 26 KB | 21 KB (81%) | ✓ | 3rd |
| https://discord.com/webflow-scripts/bodyEnd042026.js | 5 KB | — | ✓ | 3rd |
| https://ajax.googleapis.com/ajax/libs/webfont/1.6.26/webfont.js | 6 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 InventoryAction111 resources · 6.8 MB · 553 KB savings availableFIX
~553.4 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 111 resources | 6.8 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction49 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
A+Text CompressionAll text resources are compressedPASS
A+Font Loading8 fonts (299 KB)PASS
Web fonts
8
299 KB total
Render-blocking
0
of 8
Dominant font-display
swap
Most common across fonts
Font loading timeline
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+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource Hints3 hints, 0 missing preconnectsPASS
Current Resource Hints
3 resource hints configured
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Hertech Ltd
Network Waterfall111 requests over 1788msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
cdn.prod.website-files.com cdn.prod.website-files.com | Other | 1513ms | 2 KB | — | €24/mo | Costly |
Unattributable Unattributable | Other | 1238ms | 0 KB | — | €20/mo | Costly |
discord.com discord.com | Other | 1170ms | 374 KB | 53% | €19/mo | Costly |
cdn.prod.website-files.com cdn.prod.website-files.com | Other | 527ms | 265 KB | — | €8/mo | Costly |
discord.com discord.com | Other | 246ms | 0 KB | — | €4/mo | Costly |
discord.com discord.com | Other | 229ms | 28 KB | — | €4/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 167ms | 147 KB | 59% | €3/mo | Optional |
discord.com discord.com | Other | 145ms | 109 KB | 62% | €2/mo | Optional |
cdn.prod.website-files.com cdn.prod.website-files.com | Other | 144ms | 408 KB | — | €2/mo | Optional |
d3e54v103j8qbb.cloudfront.net d3e54v103j8qbb.cloudfront.net | Other | 139ms | 30 KB | — | €2/mo | Optional |
discord.com discord.com | Other | 129ms | 98 KB | 67% | €2/mo | Optional |
discord.com discord.com | Other | 97ms | 73 KB | 69% | €2/mo | Optional |
cdn.prod.website-files.com cdn.prod.website-files.com | Other | 85ms | 7 KB | — | €1/mo | Optional |
These scripts may cost more than they're worth
- cdn.prod.website-files.com adds 1513ms and costs ~€24/month
- Unattributable adds 1238ms and costs ~€20/month
- discord.com adds 1170ms and costs ~€19/month
- cdn.prod.website-files.com adds 527ms and costs ~€8/month
- discord.com adds 246ms and costs ~€4/month
- discord.com adds 229ms 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
cdn.prod.website-files.com takes 1513ms 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
Unattributable takes 1238ms 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
discord.com takes 1170ms 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
53% of discord.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
cdn.prod.website-files.com takes 527ms 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
discord.com takes 246ms 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
discord.com takes 229ms 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
59% of Google Tag Manager'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
62% of discord.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
67% of discord.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
69% of discord.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