Performance
· 21 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.
552 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
859 ms
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
0 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.048
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
571 ms
Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.
1.20 s
Page Load Progression
BThird-Party Impact58% third-party, 0 ms blockingREVIEW
BImage Optimization27 images, 0 KB saveableREVIEW
CJS Execution CostAction1631ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.redditstatic.com/ads/pixel.js | 1157ms | 1096ms | 2ms | 3rd |
| https://aiseomate.com/ | 158ms | 1ms | 3ms | 1st |
| Unattributable | 123ms | 2ms | 0ms | 1st |
| https://aiseomate.com/_next/static/chunks/2117-d94a12a0c0779c1b.js | 111ms | 102ms | 2ms | 1st |
| https://www.googletagmanager.com/gtag/js?id=G-GX4TNFZZL3 | 81ms | 64ms | 12ms | 3rd |
BJS Bundles29 scripts, 68 KB unusedREVIEW
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtag/js?id=G-GX4TNFZZL3 | 161 KB | 68 KB (43%) | ✓ | 3rd |
| https://aiseomate.com/_next/static/chunks/webpack-3dfa3f792f712b64.js | 2 KB | — | ✓ | 1st |
| https://aiseomate.com/_next/static/chunks/fd9d1056-4c7c47cd4dd0ca36.js | 53 KB | — | ✓ | 1st |
| https://aiseomate.com/_next/static/chunks/2117-d94a12a0c0779c1b.js | 31 KB | — | ✓ | 1st |
| https://aiseomate.com/_next/static/chunks/main-app-5294d1645fe5526e.js | 0 KB | — | ✓ | 1st |
| https://aiseomate.com/_next/static/chunks/5816-f5a94d8676b89aff.js | 12 KB | — | ✓ | 1st |
| https://aiseomate.com/_next/static/chunks/605-d0f69b404d2e29fc.js | 10 KB | — | ✓ | 1st |
| https://aiseomate.com/_next/static/chunks/2972-7942b33c07d2f7f2.js | 9 KB | — | ✓ | 1st |
| https://aiseomate.com/_next/static/chunks/6499-dcbd20a27fe2c86f.js | 8 KB | — | ✓ | 1st |
| https://aiseomate.com/_next/static/chunks/32-babf44be99ae8dce.js | 7 KB | — | ✓ | 1st |
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
BCompression AlgorithmMain response uses gzip; brotli would be ~20% smallerREVIEW
BMain HTML Cache-ControlCache-Control present but without max-ageREVIEW
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
BHTTP Cachings-maxage=31536000, stale-while-revalidateREVIEW
s-maxage=31536000, stale-while-revalidate
| Directive | Value | Meaning |
|---|---|---|
| s-maxage | 31536000 | CDN caches for 52 weeks |
| stale-while-revalidate | — | Serve stale while revalidating |
APage Weight Budget890 KB transferred, 83 requestsPASS
A+Text CompressionAll text resources are compressedPASS
A+Font Loading1 fonts (47 KB)PASS
Web fonts
1
47 KB total
Render-blocking
0
of 1
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+Server Response Intelligence2 server-response signal(s) detectedPASS
APage Weight Inventory83 resources · 890 KB · 68 KB savings availablePASS
~68.4 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 83 resources | 889.8 KiB | ||||||
Network Waterfall83 requests over 1898msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.redditstatic.com www.redditstatic.com | Other | 1157ms | 20 KB | — | $15/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 81ms | 161 KB | 43% | $1/mo | Optional |
These scripts may cost more than they're worth
- www.redditstatic.com adds 1157ms and costs ~$15/month
76% 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.redditstatic.com takes 1157ms 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