Performance
· 15 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.
953 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.67 s
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.
0.000
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
1.43 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.
1.68 s
Page Load Progression
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BPage Weight Budget1.3 MB transferred, 51 requestsREVIEW
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
CJS Execution CostAction1013ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.gamcare.org.uk/ | 725ms | 56ms | 3ms | 3rd |
| Unattributable | 109ms | 3ms | 0ms | 3rd |
| https://www.gamcare.org.uk/cdn-cgi/challenge-platform/scripts/jsd/main.js | 98ms | 93ms | 1ms | 3rd |
| https://www.gamcare.org.uk/app/cache/min/1/app/themes/gamcare/dist/scripts/main_2ea99d15.js?ver=1776253571 | 81ms | 48ms | 2ms | 3rd |
CPage Weight InventoryAction51 resources · 1.3 MB · 0 KB savings availableREVIEW
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 51 resources | 1.3 MiB | ||||||
A+Text CompressionAll text resources are compressedPASS
AImage Optimization11 images, 0 KB saveablePASS
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+Font Loading10 fonts (616 KB)PASS
Web fonts
10
616 KB total
Render-blocking
0
of 10
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
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- 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 ~206 KB and ~412 ms
A+JS Bundles12 scripts, 0 KB unusedPASS
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.gamcare.org.uk/wp/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 | 35 KB | — | ✓ | 3rd |
| https://www.gamcare.org.uk/wp/wp-includes/js/jquery/jquery-migrate.min.js?ver=3.4.1 | 6 KB | — | ✓ | 3rd |
| https://www.gamcare.org.uk/app/cache/min/1/app/plugins/webtoffee-gdpr-cookie-consent/public/js/cookie-law-info-public.js?ver=1776253570 | 12 KB | — | ✓ | 3rd |
| https://www.gamcare.org.uk/app/cache/min/1/app/themes/gamcare/dist/scripts/fancybox_2ea99d15.js?ver=1776253571 | 26 KB | — | ✓ | 3rd |
| https://www.gamcare.org.uk/app/plugins/add-to-any/addtoany.min.js?ver=1.1 | 0 KB | — | ✓ | 3rd |
| https://www.gamcare.org.uk/cdn-cgi/scripts/5c5dd728/cloudflare-static/email-decode.min.js | 1 KB | — | ✓ | 3rd |
| https://www.gamcare.org.uk/app/cache/min/1/app/themes/gamcare/dist/scripts/main_2ea99d15.js?ver=1776253571 | 24 KB | — | ✓ | 3rd |
| https://www.gamcare.org.uk/app/cache/min/1/app/themes/gamcare/dist/scripts/respbgimg_2ea99d15.js?ver=1776253571 | 1 KB | — | ✓ | 3rd |
| https://www.gamcare.org.uk/app/cache/min/1/app/themes/gamcare/dist/scripts/owlcarousel_2ea99d15.js?ver=1776253573 | 15 KB | — | ✓ | 3rd |
| https://www.gamcare.org.uk/app/plugins/wp-rocket/assets/js/lazyload/17.8.3/lazyload.min.js | 4 KB | — | ✓ | 3rd |
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
Network Waterfall51 requests over 2557msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.gamcare.org.uk www.gamcare.org.uk | Other | 725ms | 51 KB | — | £8/mo | Costly |
Unattributable Unattributable | Other | 109ms | 0 KB | — | £1/mo | Optional |
www.gamcare.org.uk www.gamcare.org.uk | Other | 98ms | 0 KB | — | £1/mo | Optional |
www.gamcare.org.uk www.gamcare.org.uk | Other | 81ms | 24 KB | — | £1/mo | Optional |
These scripts may cost more than they're worth
- www.gamcare.org.uk adds 725ms and costs ~£8/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.gamcare.org.uk takes 725ms 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