Performance
· 25 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.
3.65 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
11.52 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
328 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.010
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
7.01 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.
11.62 s
Page Load Progression
FPage Weight BudgetAction2.9 MB transferred, 96 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
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FJS Execution CostAction6282ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.tenlolisto.com/ | 4168ms | 31ms | 10ms | 3rd |
| https://www.tenlolisto.com/_next/static/chunks/9bdddf979f88510d.js | 1260ms | 970ms | 15ms | 3rd |
| Unattributable | 505ms | 20ms | 0ms | 1st |
| https://www.tenlolisto.com/_next/static/chunks/0d16583a451a8c99.js | 135ms | 20ms | 11ms | 3rd |
| https://www.tenlolisto.com/_next/static/chunks/8bc512cc10af3cb4.js | 110ms | 79ms | 14ms | 3rd |
| https://www.tenlolisto.com/_next/static/chunks/turbopack-d4cfea5eea3f5b05.js | 104ms | 103ms | 1ms | 3rd |
DPage Weight InventoryAction96 resources · 2.9 MB · 93 KB savings availableFIX
~92.5 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 96 resources | 2.9 MiB | ||||||
BImage Optimization21 images, 0 KB saveableREVIEW
BJS Bundles35 scripts, 93 KB unusedREVIEW
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.tenlolisto.com/_next/static/chunks/8bc512cc10af3cb4.js | 39 KB | 26 KB (66%) | ✓ | 3rd |
| https://www.tenlolisto.com/_next/static/chunks/0953df32c30ea49f.js | 25 KB | 23 KB (94%) | ✓ | 3rd |
| https://www.tenlolisto.com/_next/static/chunks/0d16583a451a8c99.js | 39 KB | 23 KB (59%) | ✓ | 3rd |
| https://www.tenlolisto.com/_next/static/chunks/9bdddf979f88510d.js | 67 KB | 21 KB (31%) | ✓ | 3rd |
| https://www.tenlolisto.com/_next/static/chunks/e61320926e4da757.js | 15 KB | — | ✓ | 3rd |
| https://www.tenlolisto.com/_next/static/chunks/1da76f962944ae9a.js | 13 KB | — | ✓ | 3rd |
| https://www.tenlolisto.com/_next/static/chunks/e19897376fdf900f.js | 7 KB | — | ✓ | 3rd |
| https://www.tenlolisto.com/_next/static/chunks/e67e085501646a16.js | 10 KB | — | ✓ | 3rd |
| https://www.tenlolisto.com/_next/static/chunks/f81d037d4b7599b4.js | 10 KB | — | ✓ | 3rd |
| https://www.tenlolisto.com/_next/static/chunks/a9602515a7a8aeda.js | 14 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
BHTTP/3 (QUIC)HTTP/3 not advertisedREVIEW
CCompression AlgorithmActionMain response served uncompressedREVIEW
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
BHTTP Cachingpublic, max-age=0, must-revalidateREVIEW
public, max-age=0, must-revalidate
| Directive | Value | Meaning |
|---|---|---|
| public | — | Any cache may store this response |
| max-age | 0 | Cache for 0 seconds |
| must-revalidate | — | Must recheck with server after expiry |
A+Text CompressionAll text resources are compressedPASS
A+Font Loading4 fonts (31 KB)PASS
Web fonts
4
31 KB total
Render-blocking
0
of 4
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 HintsNo optimization neededPASS
A+LCP Image PreloadLCP preload audit not availablePASS
A+Main HTML Cache-ControlMain HTML max-age=0 (≤ 5min) is appropriatePASS
A+Server Response Intelligence1 server-response signal(s) detectedPASS
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
AJavaScript Blocking1 JS blocking issue(s) detectedPASS
A+CSS Performance DepthNo CSS performance depth issues detectedPASS
Network Waterfall96 requests over 4350msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.tenlolisto.com www.tenlolisto.com | Other | 4168ms | 18 KB | — | $55/mo | Costly |
www.tenlolisto.com www.tenlolisto.com | Other | 1260ms | 67 KB | 31% | $17/mo | Costly |
www.tenlolisto.com www.tenlolisto.com | Other | 135ms | 39 KB | 59% | $2/mo | Optional |
www.tenlolisto.com www.tenlolisto.com | Other | 110ms | 39 KB | 66% | $1/mo | Optional |
www.tenlolisto.com www.tenlolisto.com | Other | 104ms | 4 KB | — | $1/mo | Optional |
These scripts may cost more than they're worth
- www.tenlolisto.com adds 4168ms and costs ~$55/month
- www.tenlolisto.com adds 1260ms and costs ~$17/month
92% 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
www.tenlolisto.com takes 4168ms 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.tenlolisto.com takes 1260ms 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
59% of www.tenlolisto.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
66% of www.tenlolisto.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