Performance
· 27 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.
1.91 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
18.71 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
817 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.029
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
3.75 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.
19.76 s
Page Load Progression
FPage Weight BudgetAction5.1 MB transferred, 117 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
FJS Execution CostAction5223ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://popularkeys.com/es | 2235ms | 34ms | 40ms | 1st |
| Unattributable | 965ms | 72ms | 0ms | 1st |
| https://popularkeys.com/_next/static/chunks/4805-b96bf9ac85f9266e.js | 883ms | 787ms | 19ms | 1st |
| https://popularkeys.com/_next/static/chunks/0da162a7-b3922e8f03433c77.js | 525ms | 329ms | 12ms | 1st |
| https://popularkeys.com/_next/static/chunks/8360-33b203871407e18f.js | 364ms | 302ms | 61ms | 1st |
| https://www.googletagmanager.com/gtag/js?id=G-JHF5DRTQSL | 250ms | 209ms | 38ms | 3rd |
DHTTP CachingActionno-store (uncacheable)FIX
no-store
| Directive | Value | Meaning |
|---|---|---|
| no-store | — | Never cache this response |
BImage Optimization43 images, 0 KB saveableREVIEW
BJS Bundles43 scripts, 68 KB unusedREVIEW
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtag/js?id=G-JHF5DRTQSL | 166 KB | 68 KB (41%) | ✓ | 3rd |
| https://popularkeys.com/_next/static/chunks/app/%5Blocale%5D/layout-d9be8cdadf5f283c.js | 4 KB | — | ✓ | 1st |
| https://popularkeys.com/_next/static/chunks/2787-66afe62c1ae3cfae.js | 11 KB | — | ✓ | 1st |
| https://popularkeys.com/_next/static/chunks/5335-43ad90990c124202.js | 6 KB | — | ✓ | 1st |
| https://popularkeys.com/_next/static/chunks/2753-c5800823d04dcbe3.js | 7 KB | — | ✓ | 1st |
| https://popularkeys.com/_next/static/chunks/5497-6812ad51b89016bb.js | 4 KB | — | ✓ | 1st |
| https://popularkeys.com/_next/static/chunks/app/error-6d3f9aa3d17945a7.js | 4 KB | — | ✓ | 1st |
| https://popularkeys.com/_next/static/chunks/app/not-found-38cbe80cf5fb6fe6.js | 1 KB | — | ✓ | 1st |
| https://popularkeys.com/_next/static/chunks/app/global-error-c75d043190e64025.js | 2 KB | — | ✓ | 1st |
| https://popularkeys.com/_next/static/chunks/9796-5bc3e30a3eca1a25.js | 6 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
CCompression AlgorithmActionMain response served uncompressedREVIEW
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
CPage Weight InventoryAction117 resources · 5.1 MB · 68 KB savings availableREVIEW
~68.1 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 117 resources | 5.1 MiB | ||||||
BJavaScript Blocking2 JS blocking issue(s) detectedREVIEW
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
A+Third-Party Impact3% third-party, 0 ms blockingPASS
A+Text CompressionAll text resources are compressedPASS
A+Font Loading7 fonts (103 KB)PASS
Web fonts
7
103 KB total
Render-blocking
0
of 7
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
AResource Hints8 hints, 0 missing preconnectsPASS
Current Resource Hints
8 resource hints configured
Fonts are always fetched as crossorigin=anonymous; a preload without the attribute creates a different cache key, so the browser refetches when the actual font request happens. Sample: /_next/static/media/0484562807a97172-s.p.woff2, /_next/static/media/7db6c35d839a711c-s.p.woff2, /_next/static/media/8888a3826f4a3af4-s.p.woff2 (+4 more). Add `crossorigin` (or `crossorigin="anonymous"`) to each preload.
Performance issues directly impact user engagement and conversion rates.
A+HTTP/3 (QUIC)HTTP/3 advertised via Alt-SvcPASS
A+LCP Image PreloadLCP preload audit not availablePASS
A+Main HTML Cache-ControlMain HTML uses no-store -- correct for sensitive/dynamic contentPASS
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
A+CSS Performance DepthNo CSS performance depth issues detectedPASS
Network Waterfall117 requests over 4300msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Google Tag Manager www.googletagmanager.com | Tag Manager | 250ms | 166 KB | 41% | €1/mo | Costly |
These scripts may cost more than they're worth
- Google Tag Manager adds 250ms and costs ~€1/month
Google Tag Manager takes 250ms 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
Real-User Performance (CrUX)Field metrics from the Chrome User Experience ReportINFO
Chrome User Experience (CrUX)
Real-user metrics from the Chrome UX Report (2026-07-07 — 2026-08-03)
LCP (p75)
1702 ms
90% good
INP (p75)
95 ms
93% good
CLS (p75)
0.050
84% good
FCP (p75)
1487 ms
TTFB (p75)
886 ms
Image Optimization87 images, 139 KB total, 3 KB wastedINFO
Image Optimization Audit
Total Images
87
Total Size
139 KB
Oversized
1
Wasted
3 KB