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.
16.69 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
20.53 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
72 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.
16.69 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.
20.71 s
Page Load Progression
FPage Weight BudgetAction3.0 MB transferred, 65 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
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
FJS Execution CostAction3545ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://meduza.io/18.d2d3ceaf34e8518265bd.js | 1500ms | 1290ms | 47ms | 1st |
| https://meduza.io/ | 422ms | 68ms | 42ms | 1st |
| Unattributable | 326ms | 14ms | 0ms | 3rd |
| https://meduza.io/app.46a933d5f345d809494d.js | 309ms | 244ms | 65ms | 1st |
| https://www.googletagmanager.com/gtag/js?id=G-L0LHMYHRHJ | 222ms | 178ms | 42ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-SDTC8G3JVC&cx=c>m=4e64k0 | 220ms | 154ms | 37ms | 3rd |
| https://meduza.io/cdn-cgi/challenge-platform/scripts/jsd/main.js | 210ms | 188ms | 3ms | 1st |
| https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js | 209ms | 129ms | 73ms | 3rd |
| https://apis.google.com/_/scs/abc-static/_/js/k=gapi.lb.en.HLcjcliCxoY.O/m=gapi_iframes/rt=j/sv=1/d=1/ed=1/rs=AHpOoo-EKlLcELGvY6Qdg_kTBmN3Ra8MLw/cb=gapi.loaded_0?le=scs | 68ms | 60ms | 8ms | 3rd |
| https://www.gstatic.com/firebasejs/9.3.0/firebase-firestore-compat.js | 59ms | 29ms | 26ms | 3rd |
FJS BundlesAction26 scripts, 973 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js | 0 KB | 177 KB (49%) | ✓ | 3rd |
| https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js | 362 KB | 177 KB (49%) | ✓ | 3rd |
| https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js | 362 KB | 177 KB (49%) | ✓ | 3rd |
| https://meduza.io/app.46a933d5f345d809494d.js | 203 KB | 148 KB (73%) | ✓ | 1st |
| https://www.gstatic.com/firebasejs/9.3.0/firebase-firestore-compat.js | 82 KB | 78 KB (95%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-SDTC8G3JVC&cx=c>m=4e64k0 | 157 KB | 75 KB (48%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-L0LHMYHRHJ | 166 KB | 65 KB (39%) | ✓ | 3rd |
| https://meduza.io/18.d2d3ceaf34e8518265bd.js | 147 KB | 53 KB (36%) | ✓ | 1st |
| https://www.gstatic.com/firebasejs/9.3.0/firebase-auth-compat.js | 35 KB | 23 KB (66%) | ✓ | 3rd |
| https://static.cloudflareinsights.com/beacon.min.js | 11 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 InventoryAction65 resources · 3.0 MB · 973 KB savings availableFIX
~972.7 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 65 resources | 3.0 MiB | ||||||
BThird-Party Impact47% third-party, 0 ms blockingREVIEW
BImage Optimization8 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
A+Text CompressionAll text resources are compressedPASS
A+Font Loading8 fonts (812 KB)PASS
Web fonts
8
812 KB total
Render-blocking
0
of 8
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Convert to woff2 for ~30% smaller file size
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Convert to woff2 for ~30% smaller file size
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Convert to woff2 for ~30% smaller file size
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Convert to woff2 for ~30% smaller file size
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Convert to woff2 for ~30% smaller file size
- 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 ~519 KB and ~1038 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource Hints1 hints, 0 missing preconnectsPASS
Current Resource Hints
1 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: Cloudflare
A+HTTP Cachingmax-age=30 (30 seconds)PASS
public, max-age=30, s-maxage=21600
| Directive | Value | Meaning |
|---|---|---|
| public | — | Any cache may store this response |
| max-age | 30 | Cache for 30 seconds |
| s-maxage | 21600 | CDN caches for 6 hours |
Network Waterfall65 requests over 1785msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 326ms | 0 KB | — | €2/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 222ms | 166 KB | 39% | €1/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 220ms | 157 KB | 48% | €1/mo | Costly |
www.gstatic.com www.gstatic.com | Other | 209ms | 0 KB | 49% | €1/mo | Costly |
apis.google.com apis.google.com | Other | 68ms | 34 KB | — | €0/mo | Optional |
www.gstatic.com www.gstatic.com | Other | 59ms | 82 KB | 95% | €0/mo | Optional |
These scripts may cost more than they're worth
- Unattributable adds 326ms and costs ~€2/month
- Google Tag Manager adds 222ms and costs ~€1/month
- Google Tag Manager adds 220ms and costs ~€1/month
- www.gstatic.com adds 209ms and costs ~€1/month
Unattributable takes 326ms 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 222ms 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 220ms 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.gstatic.com takes 209ms 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
95% of www.gstatic.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