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.
3.60 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
19.38 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
1.21 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.022
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
7.22 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.
20.29 s
Page Load Progression
FPage Weight BudgetAction3.1 MB transferred, 128 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
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
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 CostAction4816ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://emojipedia.org/_next/static/chunks/6442-b3c170b1a96568b8.js | 1136ms | 1019ms | 49ms | 1st |
| Unattributable | 904ms | 248ms | 0ms | 3rd |
| https://emojipedia.org/ | 572ms | 32ms | 35ms | 1st |
| https://emojipedia.org/_next/static/chunks/e4580fc7-ac289df6736d3a3d.js | 335ms | 77ms | 33ms | 1st |
| https://sdk.privacy-center.org/sdk/22ecd6bfac93de604efec0b75b2c796ee1675f92/modern/sdk.22ecd6bfac93de604efec0b75b2c796ee1675f92.js | 274ms | 188ms | 36ms | 3rd |
| https://html-load.cc/script/ZW1vamlwZWRpYS5vcmc.js | 230ms | 183ms | 43ms | 3rd |
| https://a.pub.network/emojipedia-org/prebid.js | 187ms | 138ms | 48ms | 3rd |
| https://sdk.privacy-center.org/sdk/22ecd6bfac93de604efec0b75b2c796ee1675f92/modern/ui-web-en-web.22ecd6bfac93de604efec0b75b2c796ee1675f92.js | 181ms | 99ms | 27ms | 3rd |
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604210101/pubads_impl.js?cb=31098008 | 174ms | 120ms | 51ms | 3rd |
| https://emojipedia.org/_next/static/chunks/823-dbb7e3c0579a2330.js | 144ms | 125ms | 19ms | 1st |
Showing top 10 of 18 scripts
FJS BundlesAction65 scripts, 778 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://a.pub.network/emojipedia-org/prebid.js | 186 KB | 152 KB (82%) | ✓ | 3rd |
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604210101/pubads_impl.js?cb=31098008 | 188 KB | 145 KB (77%) | ✓ | 3rd |
| https://a.pub.network/emojipedia-org/pubfig.engine.mobile.js | 153 KB | 123 KB (81%) | ✓ | 3rd |
| https://html-load.cc/script/ZW1vamlwZWRpYS5vcmc.js | 130 KB | 85 KB (66%) | ✓ | 3rd |
| https://accounts.google.com/gsi/client | 96 KB | 80 KB (83%) | ✓ | 3rd |
| https://sdk.privacy-center.org/sdk/22ecd6bfac93de604efec0b75b2c796ee1675f92/modern/sdk.22ecd6bfac93de604efec0b75b2c796ee1675f92.js | 102 KB | 46 KB (45%) | ✓ | 3rd |
| https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js | 0 KB | 35 KB (65%) | ✓ | 3rd |
| https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js | 54 KB | 35 KB (65%) | ✓ | 3rd |
| https://emojipedia.org/_next/static/chunks/823-dbb7e3c0579a2330.js | 38 KB | 32 KB (99%) | ✓ | 1st |
| https://www.googletagservices.com/tag/js/gpt.js | 34 KB | 24 KB (71%) | ✓ | 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 InventoryAction128 resources · 3.1 MB · 778 KB savings availableFIX
~777.6 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 128 resources | 3.1 MiB | ||||||
DHTTP CachingActionno-store (uncacheable)FIX
private, no-cache, no-store, max-age=0, must-revalidate
| Directive | Value | Meaning |
|---|---|---|
| private | — | Only browser cache, not CDN/proxy |
| no-cache | — | Cache but always revalidate first |
| no-store | — | Never cache this response |
| max-age | 0 | Cache for 0 seconds |
| must-revalidate | — | Must recheck with server after expiry |
BThird-Party Impact56% third-party, 0 ms blockingREVIEW
BImage Optimization46 images, 0 KB saveableREVIEW
Set explicit width and height to prevent CLS.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
A+Text CompressionAll text resources are compressedPASS
A+Font Loading1 fonts (467 KB)PASS
Web fonts
1
467 KB total
Render-blocking
0
of 1
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
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 ~234 KB and ~468 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource Hints9 hints, 0 missing preconnectsPASS
Current Resource Hints
9 resource hints configured
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
Network Waterfall128 requests over 2224msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 904ms | 0 KB | — | $12/mo | Costly |
sdk.privacy-center.org sdk.privacy-center.org | Other | 274ms | 102 KB | 45% | $4/mo | Costly |
html-load.cc html-load.cc | Other | 230ms | 130 KB | 66% | $3/mo | Costly |
a.pub.network a.pub.network | Other | 187ms | 186 KB | 82% | $2/mo | Optional |
sdk.privacy-center.org sdk.privacy-center.org | Other | 181ms | 53 KB | — | $2/mo | Optional |
securepubads.g.doubleclick.net securepubads.g.doubleclick.net | Other | 174ms | 188 KB | 77% | $2/mo | Optional |
a.pub.network a.pub.network | Other | 144ms | 153 KB | 81% | $2/mo | Optional |
sdk.privacy-center.org sdk.privacy-center.org | Other | 90ms | 159 KB | — | $1/mo | Optional |
sdk.privacy-center.org sdk.privacy-center.org | Other | 86ms | 1 KB | — | $1/mo | Optional |
securepubads.g.doubleclick.net securepubads.g.doubleclick.net | Other | 79ms | 34 KB | — | $1/mo | Optional |
pagead2.googlesyndication.com pagead2.googlesyndication.com | Other | 71ms | 0 KB | 65% | $1/mo | Optional |
sdk.privacy-center.org sdk.privacy-center.org | Other | 55ms | 18 KB | — | $1/mo | Optional |
a.pub.network a.pub.network | Other | 54ms | 26 KB | — | $1/mo | Optional |
These scripts may cost more than they're worth
- Unattributable adds 904ms and costs ~$12/month
- sdk.privacy-center.org adds 274ms and costs ~$4/month
- html-load.cc adds 230ms and costs ~$3/month
52% of JavaScript execution time comes from third-party scripts.
Third-party scripts (analytics, ads, social, A/B testing) often dominate execution time — every one is a perf-and-privacy tax.
Learn more ▾ ▴
Each third-party script is a black box: you don't control when it loads, what it executes, or how much it grows. They often account for a major share of total blocking time on average sites (HTTP Archive's Web Almanac documents the trend). Audit which ones you actually need, defer the rest, and use facade patterns (lite-youtube, lite-vimeo) for embedded media.
Source: web.dev / HTTP Archive Web Almanac
Unattributable takes 904ms 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
sdk.privacy-center.org takes 274ms 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
html-load.cc takes 230ms 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
66% of html-load.cc'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
82% of a.pub.network'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
77% of securepubads.g.doubleclick.net'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
81% of a.pub.network'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 pagead2.googlesyndication.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