https://appeal.org.uk
Performance
· 27 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.SCORE
85
GRADE
B
FIX
2
REVIEW
9
PASS
12
INFO
4
Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
72
90
73
92
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
2.16 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
2.77 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
242 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.228
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
6.76 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.
8.32 s
Page Load Progression
575 ms 1.1 s 1.7 s 2.3 s 2.9 s 3.4 s
4.0 s
4.6 sChecks
2712 PASS 9 REVIEW 2 FIX
DJS Execution CostAction2161ms total JS executionFIX
JS Execution Cost
Action2161ms total JS execution
2161ms total JS execution
Warning::
https://appeal.org.uk/: 878ms CPU time
Warning::
Unattributable: 399ms CPU time
Warning::
https://appeal.org.uk/wp-includes/js/jquery/jquery...: 317ms CPU time
Warning::
https://www.googletagmanager.com/gtag/js?id=GT-NBJ...: 312ms CPU time
Info::
https://appeal.org.uk/wp-content/plugins/3d-flipbo...: 118ms CPU time
Info::
Third-party scripts: 368ms (17% of total)
Main Thread Breakdown
Script Evaluation 36% Style & Layout 27% Other 22% Script Parsing & Compilation 5% Rendering 5% Parse HTML & CSS 4%
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://appeal.org.uk/ | 878ms | 31ms | 6ms | 1st |
| Unattributable | 399ms | 14ms | 0ms | 1st |
| https://appeal.org.uk/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 | 317ms | 233ms | 9ms | 1st |
| https://www.googletagmanager.com/gtag/js?id=GT-NBJ83N68 | 312ms | 254ms | 56ms | 3rd |
| https://appeal.org.uk/wp-content/plugins/3d-flipbook-dflip-lite/assets/js/dflip.min.js?ver=2.4.30 | 118ms | 98ms | 20ms | 1st |
| https://appeal.org.uk/wp-content/themes/bb-theme/js/theme.min.js?ver=1.7.19.2 | 81ms | 69ms | 4ms | 1st |
| https://kit.fontawesome.com/259628c539.js | 56ms | 50ms | 2ms | 3rd |
FHTTP CachingActionNo cache headersFIX
HTTP Caching
ActionNo cache headers
No cache headers
Warning::
No Cache-Control header found
Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CPage Weight BudgetAction1.9 MB transferred, 69 requestsREVIEW
Page Weight Budget
Action1.9 MB transferred, 69 requests
1.9 MB transferred, 69 requests
Info::
Page weighs 3.2 MB (1.9 MB transferred)
Warning::
Images are 1.1 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 1.1 MB
Info::
Fonts are 338 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 338 KB
Info::
69 HTTP requests
Info::
Estimated 0.39 g CO2 per page load
1.9 MB transferred
69 requests
0.39 g CO2 per page load
Images 1.1 MiB 57%
JavaScript 382.8 KiB 20%
Fonts 337.7 KiB 18%
CSS 43.4 KiB 2%
Other 29.2 KiB 2%
HTML 28.6 KiB 2%
Other 1.3 KiB 0%
0 2.4 MB 4.9 MB
Approaching limit
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Why this matters
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.
Why this matters
Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).
Source: web.dev font loading
BImage Optimization16 images, 0 KB saveableREVIEW
Image Optimization
16 images, 0 KB saveable
16 images, 0 KB saveable
Warning::
https://appeal.org.uk/wp-content/uploads/2026/06/p... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
16 images 1015 KB
0 oversized -0 KB
12 legacy format
1 missing dimensions CLS risk
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
BJS Bundles22 scripts, 142 KB unusedREVIEW
JS Bundles
22 scripts, 142 KB unused
22 scripts, 142 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=GT-NBJ...: 68 KB unused (42%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://appeal.org.uk/wp-content/plugins/3d-flipbo...: 51 KB unused (83%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://appeal.org.uk/wp-content/plugins/real-time...: 22 KB unused (75%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 142 KB
142 KB unused JavaScript
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtag/js?id=GT-NBJ83N68 | 163 KB | 68 KB (42%) | ✓ | 3rd |
| https://appeal.org.uk/wp-content/plugins/3d-flipbook-dflip-lite/assets/js/dflip.min.js?ver=2.4.30 | 62 KB | 51 KB (83%) | ✓ | 1st |
| https://appeal.org.uk/wp-content/plugins/real-time-auto-find-and-replace/assets/js/rtafar.app.min.js?ver=1.9.3 | 30 KB | 22 KB (75%) | ✓ | 1st |
| https://appeal.org.uk/wp-content/plugins/bb-plugin/js/libs/jquery.ba-throttle-debounce.min.js?ver=2.10.0.6 | 1 KB | — | ✓ | 1st |
| https://appeal.org.uk/wp-content/themes/bb-theme/js/theme.min.js?ver=1.7.19.2 | 6 KB | — | ✓ | 1st |
| https://appeal.org.uk/wp-content/plugins/bb-plugin/js/libs/jquery.imagesloaded.min.js?ver=2.10.0.6 | 2 KB | — | ✓ | 1st |
| https://appeal.org.uk/wp-content/plugins/bb-plugin/js/libs/jquery.magnificpopup.min.js?ver=2.10.0.6 | 7 KB | — | ✓ | 1st |
| https://appeal.org.uk/wp-content/uploads/bb-plugin/cache/10-layout.js?ver=b65d18580798f6ee219eb240ce22c6a9 | 10 KB | — | ✓ | 1st |
| https://appeal.org.uk/wp-content/plugins/real-time-auto-find-and-replace/assets/js/rtafar.local.js?ver=1.9.3 | 0 KB | — | ✓ | 1st |
| https://appeal.org.uk/wp-content/plugins/bb-plugin/js/libs/jquery.easing.min.js?ver=1.4 | 1 KB | — | ✓ | 1st |
Consider code splitting or tree shaking to reduce unused code.
Why this matters
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.
Why this matters
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.
Why this matters
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
HTTP/3 (QUIC)
HTTP/3 not advertised
HTTP/3 not advertised
Info::
HTTP/3 (QUIC) is not advertised
HTTP/3 isn't advertised via Alt-Svc and the worker didn't negotiate h3. HTTP/3 reduces handshake latency (1-RTT instead of 2-3 RTTs) and is more resilient on lossy connections. Most modern CDNs (Cloudflare, Fastly, AWS CloudFront, Google Cloud CDN) support HTTP/3 with a single config switch -- consider enabling for mobile-heavy workloads.
BCompression AlgorithmMain response uses gzip; brotli would be ~20% smallerREVIEW
Compression Algorithm
Main response uses gzip; brotli would be ~20% smaller
Main response uses gzip; brotli would be ~20% smaller
Info::
Main HTML response uses gzip (brotli would be ~20% smaller)
All current browsers support brotli. Most CDNs (Cloudflare, Fastly, AWS CloudFront, Vercel, Netlify) can switch from gzip to brotli with a single config flag. Origin servers (nginx, Apache) need a brotli module compiled in -- nginx-brotli or Apache mod_brotli.
BMain HTML Cache-ControlNo Cache-Control header on main HTML responseREVIEW
Main HTML Cache-Control
No Cache-Control header on main HTML response
No Cache-Control header on main HTML response
Info::
Main HTML response has no Cache-Control header
Without an explicit Cache-Control, browsers fall back to heuristic caching (~10% of Last-Modified age). Set `Cache-Control: no-cache` or `max-age=300` for HTML to control freshness explicitly -- prevents stale auth state and SPA shell drift.
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
Server-Timing Observability
No Server-Timing header found
No Server-Timing header found
Info::
No Server-Timing header found
Server-Timing exposes backend timing breakdowns to browser DevTools (e.g., `db: 45ms; render: 120ms; cache: 2ms`). Useful for diagnosing slow pages without backend log access. Most modern frameworks (Next.js, Cloudflare Workers, Fastly) emit it automatically; absence on a managed platform usually means telemetry headers are stripped at the edge.
CPage Weight InventoryAction69 resources · 1.9 MB · 142 KB savings availableREVIEW
Page Weight Inventory
Action69 resources · 1.9 MB · 142 KB savings available
69 resources · 1.9 MB · 142 KB savings available
Warning::
Page weight 1.9 MB exceeds 1 MB target by 879 KB
Got: 1.9 MB Expected: ≤ 1 MB
Info::
~142 KB of savings available
Info::
31 third-party resources (34% of weight)
Info::
1 resources over 200KB
69 resources · 1.9 MiB · 31 third-party 878.9 KiB over 1MB target
Image 57% · 1.1 MiB
JavaScript 20% · 382.8 KiB
Font 18% · 337.7 KiB
CSS 4% · 72.1 KiB
Document 2% · 28.7 KiB
Other 0% · 548 B
~141.8 KiB of savings available
Remove unused JavaScript: 141.8 KiB
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 69 resources | 1.9 MiB | ||||||
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
ActionWhether the site is served from green-energy infrastructure
Green Hosting
No green hosting detected
AThird-Party Impact34% third-party, 0 ms blockingPASS
Third-Party Impact
34% third-party, 0 ms blocking
34% third-party, 0 ms blocking
Info::
Third-party code accounts for 34% of page weight (641.2 KiB of 1.9 MiB)
Info::
Third-party blocking time is low (0 ms)
66%
34%
First-party Third-party
A+Text CompressionAll text resources are compressedPASS
Text Compression
All text resources are compressed
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+Font Loading4 fonts (338 KB)PASS
Font Loading
4 fonts (338 KB)
4 fonts (338 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
4
338 KB total
Render-blocking
0
of 4
Dominant font-display
swap
Most common across fonts
Font loading timeline
Transfer FOIT (block) FOUT (swap)
jizDREVItHgc8qDIbSTKq4X... woff2 swap
Size 29 KB
Load time 113 ms
Start 5.0 s
Risk FOUT — text flashes from fallback to web font
Yq6R-LCAWCX3-6Ky7FAFrOF... woff2 swap
Size 37 KB
Load time 113 ms
Start 5.0 s
Risk FOUT — text flashes from fallback to web font
free-fa-brands-400.woff2 woff2 swap
Size 117 KB
Load time 87 ms
Start 5.6 s
Risk FOUT — text flashes from fallback to web font
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
free-fa-solid-900.woff2 woff2 swap
Size 155 KB
Load time 95 ms
Start 5.6 s
Risk FOUT — text flashes from fallback to web font
- 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 ~136 KB and ~272 ms
A+Resource CachingAll resources properly cachedPASS
Resource Caching
All resources properly cached
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+Critical Rendering PathNo render-blocking resourcesPASS
Critical Rendering Path
No render-blocking resources
No render-blocking resources
Info::
No render-blocking resources detected
A+Resource Hints4 hints, 0 missing preconnectsPASS
Resource Hints
4 hints, 0 missing preconnects
4 hints, 0 missing preconnects
Info::
Page uses 4 resource hint(s)
Current Resource Hints
preconnect 1
preload—
dns-prefetch 3
prefetch—
4 resource hints configured
A+LCP Image PreloadLCP preload audit not availablePASS
LCP Image Preload
LCP preload audit not available
LCP preload audit not available
Info::
LCP image preload audit not available for this scan
A+Server Response Intelligence2 server-response signal(s) detectedPASS
Server Response Intelligence
2 server-response signal(s) detected
2 server-response signal(s) detected
Info::
`Vary` header declared: Accept-Encoding
The page declares a `Vary` header, telling downstream caches which request headers the response varies on. Critical for content-negotiated responses (compression, language, cookies, device class).
Info::
No `ETag` or `Last-Modified` -- conditional GET not supported
Without either header, browsers can't issue conditional GETs and refresh always re-downloads the full response body even when nothing changed. Add `ETag: "<hash>"` (or `Last-Modified: <date>`) on cacheable responses; the server returns 304 Not Modified when the client's cached copy is still valid, saving bandwidth.
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
Render-Blocking Resources
No render-blocking resources detected
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+Third-Party ResourcesNo third-party resources detectedPASS
Third-Party Resources
No third-party resources detected
No third-party resources detected
AJavaScript Blocking1 JS blocking issue(s) detectedPASS
JavaScript Blocking
1 JS blocking issue(s) detected
1 JS blocking issue(s) detected
Warning::
2 render-blocking <script src> tag(s) without async/defer
Each `<script src=...>` without `async`, `defer`, or `type="module"` blocks HTML parsing while the browser fetches and executes it. The block lasts the entire round-trip + execution time -- on slow networks this translates directly into LCP delay. Add `defer` (executes after parse, in source order) for scripts that interact with the DOM, or `async` (executes whenever ready) for analytics / independent scripts. Module scripts (`type="module"`) are deferred by default.
ACSS Performance Depth1 CSS depth issue(s) detectedPASS
CSS Performance Depth
1 CSS depth issue(s) detected
1 CSS depth issue(s) detected
Warning::
8 render-blocking stylesheet(s) -- recommended: <=3
Each `<link rel="stylesheet">` without a non-blocking `media` attribute holds up the first paint. Browsers download all of them before painting any content. Consolidate into 1-2 critical-path stylesheets; defer non-critical CSS via `<link rel="stylesheet" media="print" onload="this.media='all'">` or via the loadCSS pattern; inline above-the-fold CSS in `<style>` to short-circuit the request entirely.
Network Waterfall69 requests over 6215msINFO
Network Waterfall
69 requests over 6215ms
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
17% of JavaScript execution is third-party
First-party Third-party 368ms · 169KB · £4/mo
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Google Tag Manager www.googletagmanager.com | Tag Manager | 312ms | 163 KB | 42% | £3/mo | Costly |
kit.fontawesome.com kit.fontawesome.com | Other | 56ms | 6 KB | — | £1/mo | Optional |
Google Tag Manager
Tag Manager
Execution 312ms
Transfer 163 KB
Unused 42%
Monthly Cost £3/mo
kit.fontawesome.com
Other
Execution 56ms
Transfer 6 KB
Monthly Cost £1/mo
These scripts may cost more than they're worth
- Google Tag Manager adds 312ms and costs ~£3/month
Google Tag Manager takes 312ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
Why this matters
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
Real-User Performance (CrUX)
Field metrics from the Chrome User Experience Report
Chrome User Experience (CrUX)
Real-user metrics from the Chrome UX Report (2026-06-25 — 2026-07-22)
LCP (p75)
1298 ms
90% good
INP (p75)
71 ms
96% good
CLS (p75)
0.070
82% good
FCP (p75)
1203 ms
TTFB (p75)
827 ms
This origin passes Core Web Vitals assessment
Image Optimization13 images, 515 KB total, 0 KB wastedINFO
Image Optimization
13 images, 515 KB total, 0 KB wasted
Image Optimization Audit
Total Images
13
Total Size
515 KB
1 missing alt text 1 missing dimensions 2 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.