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.
11.75 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
13.25 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
898 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.028
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
11.75 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.
19.92 s
Page Load Progression
FPage Weight BudgetAction3.2 MB transferred, 121 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
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 CostAction5375ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://s.pinimg.com/webapp/www/_client-62195fd773519886.mjs | 2894ms | 2576ms | 137ms | 3rd |
| https://www.pinterest.com/ | 650ms | 112ms | 10ms | 3rd |
| Unattributable | 608ms | 7ms | 0ms | 3rd |
| https://s.pinimg.com/webapp/31320-2f5f600dacb7eabb.mjs | 303ms | 180ms | 3ms | 3rd |
| https://s.pinimg.com/webapp/18324-f75b500bbaa8e30e.mjs | 289ms | 186ms | 65ms | 3rd |
| https://s.pinimg.com/webapp/vendor-react-aacabe10c4aaf058.mjs | 169ms | 62ms | 61ms | 3rd |
| https://accounts.google.com/gsi/client?hl=en | 126ms | 78ms | 19ms | 3rd |
| https://s.pinimg.com/webapp/gestalt-5c994cddaa3994a0.mjs | 90ms | 2ms | 87ms | 3rd |
| https://s.pinimg.com/webapp/38794-8b06bf08008b5f9e.mjs | 84ms | 68ms | 3ms | 3rd |
| https://s.pinimg.com/webapp/51405-76ae5359063ab8d4.mjs | 57ms | 1ms | 56ms | 3rd |
Showing top 10 of 12 scripts
FJS BundlesAction68 scripts, 766 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://s.pinimg.com/webapp/www/_client-62195fd773519886.mjs | 272 KB | 163 KB (60%) | ✓ | 3rd |
| https://s.pinimg.com/webapp/gestalt-5c994cddaa3994a0.mjs | 232 KB | 78 KB (34%) | ✓ | 3rd |
| https://s.pinimg.com/webapp/vendor-react-aacabe10c4aaf058.mjs | 134 KB | 68 KB (51%) | ✓ | 3rd |
| https://accounts.google.com/gsi/client?hl=en | 96 KB | 65 KB (68%) | ✓ | 3rd |
| https://s.pinimg.com/webapp/18030-df9a17e6751d2771.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/www/index-670a36ef7ae8c558.mjs | 72 KB | 47 KB (65%) | ✓ | 3rd |
| https://s.pinimg.com/webapp/38595-cdbfffd4275055a6.mjs | 48 KB | 45 KB (93%) | ✓ | 3rd |
| https://s.pinimg.com/webapp/70508-7b44254c136095a9.mjs | 38 KB | 32 KB (85%) | ✓ | 3rd |
| https://s.pinimg.com/webapp/98202-3f52e5cbd5297f09.mjs | 28 KB | 27 KB (99%) | ✓ | 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 InventoryAction121 resources · 3.2 MB · 766 KB savings availableFIX
~766.5 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 121 resources | 3.2 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 Waterfall121 requests over 2615msINFO
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 | 2894ms | 272 KB | 60% | €31/mo | Costly |
www.pinterest.com www.pinterest.com | Other | 650ms | 95 KB | — | €7/mo | Costly |
Unattributable Unattributable | Other | 608ms | 0 KB | — | €7/mo | Costly |
s.pinimg.com s.pinimg.com | Other | 303ms | 11 KB | — | €3/mo | Costly |
s.pinimg.com s.pinimg.com | Other | 289ms | 341 KB | — | €3/mo | Costly |
s.pinimg.com s.pinimg.com | Other | 169ms | 134 KB | 51% | €2/mo | Optional |
accounts.google.com accounts.google.com | Other | 126ms | 96 KB | 68% | €1/mo | Optional |
s.pinimg.com s.pinimg.com | Other | 90ms | 232 KB | 34% | €1/mo | Optional |
s.pinimg.com s.pinimg.com | Other | 84ms | 8 KB | — | €1/mo | Optional |
s.pinimg.com s.pinimg.com | Other | 57ms | 63 KB | 87% | €1/mo | Optional |
s.pinimg.com s.pinimg.com | Other | 53ms | 72 KB | 65% | €1/mo | Optional |
s.pinimg.com s.pinimg.com | Other | 51ms | 48 KB | 93% | €1/mo | Optional |
These scripts may cost more than they're worth
- s.pinimg.com adds 2894ms and costs ~€31/month
- www.pinterest.com adds 650ms and costs ~€7/month
- Unattributable adds 608ms and costs ~€7/month
- s.pinimg.com adds 303ms and costs ~€3/month
- s.pinimg.com adds 289ms and costs ~€3/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 2894ms 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
www.pinterest.com takes 650ms 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 608ms 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 303ms 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 289ms 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
51% 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
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
65% 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
93% 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