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.
726 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
2.27 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
12 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.
943 ms
Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.
4.14 s
Page Load Progression
523 ms
1.0 s 1.6 s 2.1 s 2.6 s 3.1 s 3.7 s
4.2 sFPage Weight BudgetAction3.0 MB transferred, 139 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 ImpactAction100% third-party, 0 ms blockingFIX
DJS BundlesAction36 scripts, 327 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtag/js?id=G-07LHW959W7&cx=c>m=4e64k1 | 166 KB | 66 KB (40%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-10967078770&cx=c>m=4e64k1 | 147 KB | 61 KB (41%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-MKVJP2Q | 161 KB | 57 KB (36%) | ✓ | 3rd |
| https://analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwMA.js | 106 KB | 57 KB (54%) | ✓ | 3rd |
| https://connect.facebook.net/en_US/fbevents.js | 97 KB | 40 KB (41%) | ✓ | 3rd |
| https://static-beta.curseforge.com/_next/static/chunks/0tyq16_b2wa6u.js | 71 KB | 25 KB (35%) | ✓ | 3rd |
| https://static-beta.curseforge.com/_next/static/chunks/0xuz5sh5un26i.js | 37 KB | 21 KB (56%) | ✓ | 3rd |
| https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js | 54 KB | — | ✓ | 3rd |
| https://static-beta.curseforge.com/_next/static/chunks/0hf19yipwtiq1.js | 10 KB | — | ✓ | 3rd |
| https://static-beta.curseforge.com/_next/static/chunks/0.p~1iduc751x.js | 10 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
DPage Weight InventoryAction139 resources · 3.0 MB · 327 KB savings availableFIX
~326.6 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 139 resources | 3.0 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction57 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
BJS Execution Cost745ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.curseforge.com/ | 149ms | 11ms | 9ms | 3rd |
| Unattributable | 123ms | 3ms | 0ms | 3rd |
| https://analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwMA.js | 119ms | 76ms | 39ms | 3rd |
| https://static-beta.curseforge.com/_next/static/chunks/0tyq16_b2wa6u.js | 111ms | 93ms | 12ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-MKVJP2Q | 81ms | 67ms | 11ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-10967078770&cx=c>m=4e64k1 | 57ms | 48ms | 8ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-07LHW959W7&cx=c>m=4e64k1 | 56ms | 45ms | 10ms | 3rd |
| https://scripts.clarity.ms/0.8.59/clarity.js | 50ms | 39ms | 2ms | 3rd |
A+Text CompressionAll text resources are compressedPASS
A+Font Loading6 fonts (358 KB)PASS
Web fonts
6
358 KB total
Render-blocking
0
of 6
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
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 ~62 KB and ~124 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 Waterfall139 requests over 2571msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.curseforge.com www.curseforge.com | Other | 149ms | 82 KB | — | $2/mo | Optional |
Unattributable Unattributable | Other | 123ms | 0 KB | — | $2/mo | Optional |
analytics.tiktok.com analytics.tiktok.com | Other | 119ms | 106 KB | 54% | $2/mo | Optional |
static-beta.curseforge.com static-beta.curseforge.com | Other | 111ms | 71 KB | 35% | $1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 81ms | 161 KB | 36% | $1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 57ms | 147 KB | 41% | $1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 56ms | 166 KB | 40% | $1/mo | Optional |
Microsoft Clarity scripts.clarity.ms | Session Replay | 50ms | 26 KB | — | $1/mo | Optional |
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
54% of analytics.tiktok.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