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.
4.92 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
33.90 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
749 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.039
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
10.26 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.
34.17 s
Page Load Progression
FPage Weight BudgetAction5.7 MB transferred, 69 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
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
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
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
DJS Execution CostAction2777ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.engadget.com/_gdgt/_next/static/chunks/vendor-8d0e6c4675dab796.js | 994ms | 761ms | 211ms | 3rd |
| https://ec.yimg.com/didomi/sdk/d4911c3d5b4b9a80b40e05167f53d1b1e8da81f3/modern/sdk.d4911c3d5b4b9a80b40e05167f53d1b1e8da81f3.js | 487ms | 387ms | 32ms | 3rd |
| Unattributable | 462ms | 8ms | 0ms | 3rd |
| https://www.engadget.com/ | 429ms | 10ms | 27ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-H2EP6H9Y3S | 169ms | 133ms | 35ms | 3rd |
| https://consent.cmp.oath.com/version/6.4.1/cmp.js | 90ms | 71ms | 14ms | 3rd |
| https://ec.yimg.com/didomi/f5623e34-377a-419c-8bb7-3928cebffbc9/loader.js?target_type=notice&target=9aJ3P7tj&country=ES | 88ms | 10ms | 77ms | 3rd |
| https://s.yimg.com/oa/consent.js | 58ms | 44ms | 13ms | 3rd |
FJS BundlesAction25 scripts, 2.1 MB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.engadget.com/_gdgt/_next/static/chunks/vendor-8d0e6c4675dab796.js | 2704 KB | 1635 KB (60%) | ✓ | 3rd |
| https://ec.yimg.com/didomi/sdk/d4911c3d5b4b9a80b40e05167f53d1b1e8da81f3/modern/sdk.d4911c3d5b4b9a80b40e05167f53d1b1e8da81f3.js | 403 KB | 176 KB (44%) | ✓ | 3rd |
| https://ec.yimg.com/didomi/sdk/d4911c3d5b4b9a80b40e05167f53d1b1e8da81f3/modern/ui-web-en-web.d4911c3d5b4b9a80b40e05167f53d1b1e8da81f3.js | 257 KB | 95 KB (37%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-H2EP6H9Y3S | 160 KB | 80 KB (50%) | ✓ | 3rd |
| https://s.yimg.com/du/benji/benji-2.js | 54 KB | 45 KB (84%) | ✓ | 3rd |
| https://www.engadget.com/_gdgt/_next/static/chunks/app/layout-3245ed5f936a1d7a.js | 68 KB | 29 KB (43%) | ✓ | 3rd |
| https://www.engadget.com/_gdgt/_next/static/chunks/app/%5B...hubSlug%5D/page-4f1810d99f48673c.js | 44 KB | 27 KB (63%) | ✓ | 3rd |
| https://s.yimg.com/oa/consent.js | 49 KB | 25 KB (51%) | ✓ | 3rd |
| https://ec.yimg.com/didomi/f5623e34-377a-419c-8bb7-3928cebffbc9/loader.js?target_type=notice&target=9aJ3P7tj&country=ES | 216 KB | — | ✓ | 3rd |
| https://s.yimg.com/ss/analytics3.js | 29 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 InventoryAction69 resources · 5.7 MB · 2.1 MB savings availableFIX
~2.1 MiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 69 resources | 5.7 MiB | ||||||
DHTTP CachingActionno-store (uncacheable)FIX
no-store
| Directive | Value | Meaning |
|---|---|---|
| no-store | — | Never cache this response |
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
A+Text CompressionAll text resources are compressedPASS
AImage Optimization20 images, 0 KB saveablePASS
A+Font Loading4 fonts (209 KB)PASS
Web fonts
4
209 KB total
Render-blocking
0
of 4
Dominant font-display
swap
Most common across fonts
Font loading timeline
- 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 ~40 KB and ~80 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource Hints5 hints, 0 missing preconnectsPASS
Current Resource Hints
5 resource hints configured
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall69 requests over 2437msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.engadget.com www.engadget.com | Other | 994ms | 2704 KB | 60% | $17/mo | Costly |
ec.yimg.com ec.yimg.com | Other | 487ms | 403 KB | 44% | $8/mo | Costly |
Unattributable Unattributable | Other | 462ms | 0 KB | — | $8/mo | Costly |
www.engadget.com www.engadget.com | Other | 429ms | 59 KB | — | $7/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 169ms | 160 KB | 50% | $3/mo | Optional |
consent.cmp.oath.com consent.cmp.oath.com | Other | 90ms | 35 KB | — | $2/mo | Optional |
ec.yimg.com ec.yimg.com | Other | 88ms | 216 KB | — | $2/mo | Optional |
s.yimg.com s.yimg.com | Other | 58ms | 49 KB | 51% | $1/mo | Optional |
These scripts may cost more than they're worth
- www.engadget.com adds 994ms and costs ~$17/month
- ec.yimg.com adds 487ms and costs ~$8/month
- Unattributable adds 462ms and costs ~$8/month
- www.engadget.com adds 429ms and costs ~$7/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
www.engadget.com takes 994ms 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 www.engadget.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
ec.yimg.com takes 487ms 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 462ms 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.engadget.com takes 429ms 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 Google Tag Manager'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
51% of s.yimg.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