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.
11.22 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
15.11 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
1.21 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.004
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
11.22 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.
22.10 s
Page Load Progression
FPage Weight BudgetAction6.9 MB transferred, 174 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 CostAction8316ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://s.pinimg.com/webapp/www/_client-8697262c6dad9551.mjs | 4800ms | 4178ms | 156ms | 3rd |
| Unattributable | 892ms | 9ms | 0ms | 3rd |
| https://www.pinterest.com/ | 785ms | 13ms | 8ms | 3rd |
| https://s.pinimg.com/webapp/31320-2f5f600dacb7eabb.mjs | 443ms | 226ms | 4ms | 3rd |
| https://s.pinimg.com/webapp/18324-f75b500bbaa8e30e.mjs | 355ms | 271ms | 83ms | 3rd |
| https://s.pinimg.com/webapp/vendor-react-45026c69f0fd126c.mjs | 278ms | 138ms | 62ms | 3rd |
| https://accounts.google.com/gsi/client?hl=en | 155ms | 58ms | 29ms | 3rd |
| https://s.pinimg.com/webapp/42484-eb1a635b0ec42e2f.mjs | 145ms | 133ms | 11ms | 3rd |
| https://s.pinimg.com/webapp/gestalt-06bf9b1d55e35873.mjs | 117ms | 6ms | 109ms | 3rd |
| https://s.pinimg.com/webapp/38794-7b479bc4ce6b554a.mjs | 99ms | 79ms | 4ms | 3rd |
Showing top 10 of 14 scripts
FJS BundlesAction70 scripts, 785 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://s.pinimg.com/webapp/www/_client-8697262c6dad9551.mjs | 281 KB | 163 KB (58%) | ✓ | 3rd |
| https://s.pinimg.com/webapp/gestalt-06bf9b1d55e35873.mjs | 232 KB | 77 KB (33%) | ✓ | 3rd |
| https://accounts.google.com/gsi/client?hl=en | 96 KB | 65 KB (68%) | ✓ | 3rd |
| https://s.pinimg.com/webapp/18030-47e3c6607273153c.mjs | 101 KB | 64 KB (64%) | ✓ | 3rd |
| https://s.pinimg.com/webapp/51405-76ae5359063ab8d4.mjs | 63 KB | 55 KB (87%) | ✓ | 3rd |
| https://s.pinimg.com/webapp/vendor-react-45026c69f0fd126c.mjs | 115 KB | 51 KB (45%) | ✓ | 3rd |
| https://s.pinimg.com/webapp/38595-1e42099becb13788.mjs | 48 KB | 45 KB (93%) | ✓ | 3rd |
| https://s.pinimg.com/webapp/UnauthHomePage-9b3288589b07d555.mjs | 76 KB | 41 KB (54%) | ✓ | 3rd |
| https://s.pinimg.com/webapp/69746-e3db26b72047d36a.mjs | 38 KB | 32 KB (85%) | ✓ | 3rd |
| https://s.pinimg.com/webapp/63457-fd61e82dc0f18e25.mjs | 34 KB | 32 KB (95%) | ✓ | 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 InventoryAction174 resources · 6.9 MB · 785 KB savings availableFIX
~785.4 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 174 resources | 6.9 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization75 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 Hints53 hints, 0 missing preconnectsPASS
Current Resource Hints
53 resource hints configured
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall174 requests over 3000msINFO
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 | 4800ms | 281 KB | 58% | $64/mo | Costly |
Unattributable Unattributable | Other | 892ms | 0 KB | — | $12/mo | Costly |
www.pinterest.com www.pinterest.com | Other | 785ms | 95 KB | — | $10/mo | Costly |
s.pinimg.com s.pinimg.com | Other | 443ms | 11 KB | — | $6/mo | Costly |
s.pinimg.com s.pinimg.com | Other | 355ms | 341 KB | — | $5/mo | Costly |
s.pinimg.com s.pinimg.com | Other | 278ms | 115 KB | 45% | $4/mo | Costly |
accounts.google.com accounts.google.com | Other | 155ms | 96 KB | 68% | $2/mo | Optional |
s.pinimg.com s.pinimg.com | Other | 145ms | 29 KB | 95% | $2/mo | Optional |
s.pinimg.com s.pinimg.com | Other | 117ms | 232 KB | 33% | $2/mo | Optional |
s.pinimg.com s.pinimg.com | Other | 99ms | 8 KB | — | $1/mo | Optional |
s.pinimg.com s.pinimg.com | Other | 63ms | 63 KB | 87% | $1/mo | Optional |
s.pinimg.com s.pinimg.com | Other | 63ms | 9 KB | — | $1/mo | Optional |
s.pinimg.com s.pinimg.com | Other | 62ms | 101 KB | 64% | $1/mo | Optional |
s.pinimg.com s.pinimg.com | Other | 61ms | 27 KB | — | $1/mo | Optional |
These scripts may cost more than they're worth
- s.pinimg.com adds 4800ms and costs ~$64/month
- Unattributable adds 892ms and costs ~$12/month
- www.pinterest.com adds 785ms and costs ~$10/month
- s.pinimg.com adds 443ms and costs ~$6/month
- s.pinimg.com adds 355ms and costs ~$5/month
- s.pinimg.com adds 278ms 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
s.pinimg.com takes 4800ms 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
58% 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 892ms 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.pinterest.com takes 785ms 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 443ms 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 355ms 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 278ms 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
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
95% 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
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
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