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.
11.70 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
18.31 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
1.49 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.030
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
11.70 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.
27.49 s
Page Load Progression
FPage Weight BudgetAction5.3 MB transferred, 125 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
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 CostAction6905ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://s.pinimg.com/webapp/www/_client-66c5370da15b76ce.mjs | 3570ms | 3130ms | 150ms | 3rd |
| Unattributable | 770ms | 22ms | 0ms | 3rd |
| https://fr.pinterest.com/ | 584ms | 16ms | 8ms | 3rd |
| https://s.pinimg.com/webapp/31320-2f5f600dacb7eabb.mjs | 492ms | 278ms | 4ms | 3rd |
| https://s.pinimg.com/webapp/18324-f75b500bbaa8e30e.mjs | 363ms | 277ms | 86ms | 3rd |
| https://s.pinimg.com/webapp/vendor-react-aacabe10c4aaf058.mjs | 253ms | 80ms | 111ms | 3rd |
| https://s.pinimg.com/webapp/www/index-0998fdadf26b81d6.mjs | 207ms | 176ms | 31ms | 3rd |
| https://accounts.google.com/gsi/client?hl=en | 170ms | 122ms | 30ms | 3rd |
| https://connect.facebook.net/en_US/bundle/sdk.js/ | 124ms | 90ms | 31ms | 3rd |
| https://s.pinimg.com/webapp/38794-8b06bf08008b5f9e.mjs | 115ms | 92ms | 7ms | 3rd |
Showing top 10 of 13 scripts
FJS BundlesAction70 scripts, 810 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://s.pinimg.com/webapp/www/_client-66c5370da15b76ce.mjs | 272 KB | 163 KB (60%) | ✓ | 3rd |
| https://s.pinimg.com/webapp/gestalt-157c96fb7c328b09.mjs | 233 KB | 78 KB (34%) | ✓ | 3rd |
| https://s.pinimg.com/webapp/vendor-react-aacabe10c4aaf058.mjs | 134 KB | 67 KB (50%) | ✓ | 3rd |
| https://s.pinimg.com/webapp/68755-236cb9b383ec15cf.mjs | 102 KB | 65 KB (64%) | ✓ | 3rd |
| https://s.pinimg.com/webapp/www/index-0998fdadf26b81d6.mjs | 72 KB | 63 KB (87%) | ✓ | 3rd |
| https://s.pinimg.com/webapp/51405-76ae5359063ab8d4.mjs | 63 KB | 54 KB (87%) | ✓ | 3rd |
| https://connect.facebook.net/en_US/bundle/sdk.js/ | 78 KB | 49 KB (64%) | ✓ | 3rd |
| https://s.pinimg.com/webapp/38595-1da8f48b45555d45.mjs | 48 KB | 45 KB (93%) | ✓ | 3rd |
| https://accounts.google.com/gsi/client?hl=en | 96 KB | 38 KB (68%) | ✓ | 3rd |
| https://s.pinimg.com/webapp/70508-0d4ecdbd43323a4c.mjs | 38 KB | 32 KB (85%) | ✓ | 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 InventoryAction125 resources · 5.3 MB · 810 KB savings availableFIX
~809.7 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 125 resources | 5.3 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization28 images, 0 KB saveableREVIEW
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
A+Text CompressionAll text resources are compressedPASS
A+Font Loading6 fonts (136 KB)PASS
Web fonts
6
136 KB total
Render-blocking
0
of 6
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 Hints55 hints, 0 missing preconnectsPASS
Current Resource Hints
55 resource hints configured
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall125 requests over 2679msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
s.pinimg.com s.pinimg.com | Other | 3570ms | 272 KB | 60% | €39/mo | Costly |
Unattributable Unattributable | Other | 770ms | 0 KB | — | €8/mo | Costly |
fr.pinterest.com fr.pinterest.com | Other | 584ms | 96 KB | — | €6/mo | Costly |
s.pinimg.com s.pinimg.com | Other | 492ms | 11 KB | — | €5/mo | Costly |
s.pinimg.com s.pinimg.com | Other | 363ms | 341 KB | — | €4/mo | Costly |
s.pinimg.com s.pinimg.com | Other | 253ms | 134 KB | 50% | €3/mo | Costly |
s.pinimg.com s.pinimg.com | Other | 207ms | 72 KB | 87% | €2/mo | Costly |
accounts.google.com accounts.google.com | Other | 170ms | 96 KB | 68% | €2/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 124ms | 78 KB | 64% | €1/mo | Optional |
s.pinimg.com s.pinimg.com | Other | 115ms | 8 KB | — | €1/mo | Optional |
s.pinimg.com s.pinimg.com | Other | 107ms | 233 KB | 34% | €1/mo | Optional |
s.pinimg.com s.pinimg.com | Other | 88ms | 27 KB | — | €1/mo | Optional |
s.pinimg.com s.pinimg.com | Other | 63ms | 102 KB | 64% | €1/mo | Optional |
These scripts may cost more than they're worth
- s.pinimg.com adds 3570ms and costs ~€39/month
- Unattributable adds 770ms and costs ~€8/month
- fr.pinterest.com adds 584ms and costs ~€6/month
- s.pinimg.com adds 492ms and costs ~€5/month
- s.pinimg.com adds 363ms and costs ~€4/month
- s.pinimg.com adds 253ms and costs ~€3/month
- s.pinimg.com adds 207ms and costs ~€2/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
s.pinimg.com takes 3570ms 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
60% of s.pinimg.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 770ms 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
fr.pinterest.com takes 584ms 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
s.pinimg.com takes 492ms 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
s.pinimg.com takes 363ms 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
s.pinimg.com takes 253ms 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
50% of s.pinimg.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
s.pinimg.com takes 207ms 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
87% of s.pinimg.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
68% of accounts.google.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
64% of Facebook Pixel'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
64% of s.pinimg.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