https://www.activatedigital.co.uk
Performance
· 27 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.SCORE
87
GRADE
B
FIX
3
REVIEW
6
PASS
14
INFO
4
Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
59
89
81
100
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
2.49 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
9.88 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
260 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.132
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
4.55 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.
10.12 s
Page Load Progression
557 ms 1.1 s 1.7 s
2.2 s
2.8 s
3.3 s
3.9 s
4.5 sChecks
2714 PASS 6 REVIEW 3 FIX
DThird-Party ImpactAction94% third-party, 0 ms blockingFIX
Third-Party Impact
Action94% third-party, 0 ms blocking
94% third-party, 0 ms blocking
Warning::
Third-party code accounts for 94% of page weight (999.4 KiB of 1.0 MiB)
Info::
Third-party blocking time is low (0 ms)
94%
First-party Third-party
DJS Execution CostAction2131ms total JS executionFIX
JS Execution Cost
Action2131ms total JS execution
2131ms total JS execution
Warning::
https://www.activatedigital.co.uk/: 579ms CPU time
Warning::
Unattributable: 465ms CPU time
Warning::
https://cdn.activatedigital.co.uk/wp-content/lites...: 398ms CPU time
Info::
https://www.googletagmanager.com/gtag/js?id=G-D1CF...: 238ms CPU time
Info::
https://www.googletagmanager.com/gtm.js?id=GTM-WM4...: 155ms CPU time
Warning::
Third-party scripts: 1551ms (73% of total)
Main Thread Breakdown
Script Evaluation 42% Other 28% Style & Layout 14% Script Parsing & Compilation 6% Rendering 4% Parse HTML & CSS 4%
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.activatedigital.co.uk/ | 579ms | 67ms | 10ms | 1st |
| Unattributable | 465ms | 34ms | 0ms | 3rd |
| https://cdn.activatedigital.co.uk/wp-content/litespeed/js/4c909d09aae2653ff6d35f076456bf86.js?ver=6bf86 | 398ms | 219ms | 1ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-D1CFN3TWQR&cx=c>m=4e6562h1 | 238ms | 190ms | 43ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-WM4STS9 | 155ms | 122ms | 30ms | 3rd |
| https://connect.facebook.net/signals/config/490624601338237?v=2.9.313&r=stable&domain=www.activatedigital.co.uk&hme=97937018cefade17726f0472876fc101316b2ce9008a35a6a5a7977d7436151a&ex_m=104%2C205%2C154%2C22%2C72%2C73%2C145%2C68%2C67%2C11%2C162%2C90%2C16%2C138%2C48%2C146%2C77%2C112%2C47%2C127%2C39%2C75%2C78%2C134%2C159%2C164%2C8%2C4%2C5%2C7%2C6%2C3%2C91%2C101%2C165%2C170%2C219%2C62%2C186%2C187%2C55%2C276%2C30%2C74%2C231%2C230%2C229%2C23%2C33%2C103%2C61%2C10%2C63%2C97%2C98%2C99%2C105%2C130%2C31%2C29%2C132%2C133%2C129%2C128%2C155%2C76%2C158%2C156%2C157%2C50%2C60%2C123%2C15%2C161%2C45%2C263%2C264%2C262%2C26%2C27%2C28%2C18%2C20%2C44%2C40%2C42%2C41%2C83%2C92%2C96%2C110%2C144%2C147%2C46%2C111%2C24%2C21%2C119%2C69%2C36%2C149%2C148%2C150%2C141%2C139%2C25%2C35%2C59%2C109%2C160%2C70%2C17%2C152%2C114%2C81%2C66%2C19%2C85%2C86%2C116%2C84%2C136%2C135%2C34%2C278%2C293%2C212%2C201%2C202%2C200%2C296%2C288%2C52%2C213%2C107%2C131%2C80%2C121%2C54%2C49%2C113%2C120%2C126%2C58%2C64%2C151%2C115%2C37%2C32%2C53%2C56%2C100%2C163%2C1%2C124%2C14%2C122%2C12%2C2%2C57%2C93%2C65%2C118%2C89%2C88%2C166%2C167%2C94%2C95%2C9%2C125%2C102%2C51%2C142%2C87%2C79%2C71%2C117%2C106%2C43%2C143%2C0%2C82%2C137%2C140%2C153%2C38%2C108%2C13%2C168 | 110ms | 93ms | 16ms | 3rd |
| https://connect.facebook.net/en_US/fbevents.js | 104ms | 78ms | 24ms | 3rd |
| https://cdn.activatedigital.co.uk/wp-content/litespeed/js/e8627af08cb032279415ab2746d8e4fb.js?ver=8e4fb | 82ms | 49ms | 1ms | 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.
Info::
ETag present — enables conditional (304) responses
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization38 images, 0 KB saveableREVIEW
Image Optimization
38 images, 0 KB saveable
38 images, 0 KB saveable
Info::
All images are well-optimized
38 images 302 KB
0 oversized -0 KB
26 legacy format
0 missing dimensions CLS risk
BJS Bundles18 scripts, 106 KB unusedREVIEW
JS Bundles
18 scripts, 106 KB unused
18 scripts, 106 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=G-D1CF...: 72 KB unused (40%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://connect.facebook.net/en_US/fbevents.js: 34 KB unused (35%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 106 KB
106 KB unused JavaScript
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtag/js?id=G-D1CFN3TWQR&cx=c>m=4e6562h1 | 178 KB | 72 KB (40%) | ✓ | 3rd |
| https://connect.facebook.net/en_US/fbevents.js | 97 KB | 34 KB (35%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-WM4STS9 | 129 KB | — | ✓ | 3rd |
| data:text/javascript;base64,d2luZG93LmFkZEV2ZW50TGlzdGVuZXIoJ0RPTUNvbnRlbnRMb2FkZWQnLGZ1bmN0aW9uKCl… | 0 KB | — | ✓ | 3rd |
| https://cdn.activatedigital.co.uk/wp-content/litespeed/js/4c909d09aae2653ff6d35f076456bf86.js?ver=6bf86 | 6 KB | — | ✓ | 3rd |
| https://cdn.activatedigital.co.uk/wp-content/litespeed/js/1d72390ff1bd773fc4fa8d9914d3f566.js?ver=3f566 | 6 KB | — | ✓ | 3rd |
| https://cdn.activatedigital.co.uk/wp-content/litespeed/js/e8627af08cb032279415ab2746d8e4fb.js?ver=8e4fb | 2 KB | — | ✓ | 3rd |
| https://cdn.activatedigital.co.uk/wp-content/litespeed/js/2caa26f12ae84e0b9360837ecb74f422.js?ver=4f422 | 2 KB | — | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-WM4STS9 | 0 KB | — | ✓ | 3rd |
| https://cdn.activatedigital.co.uk/wp-content/litespeed/js/ed71eb1efa63b3cef85560edc270b80c.js?ver=0b80c | 14 KB | — | ✓ | 3rd |
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
CCompression AlgorithmActionMain response served uncompressedREVIEW
Compression Algorithm
ActionMain response served uncompressed
Main response served uncompressed
Info::
Main HTML response has no Content-Encoding (uncompressed)
The main HTML document is served without compression. The Text Compression section above lists the broader picture; for the main response specifically, even gzip would shave ~70-80% off most text payloads.
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.
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
APage Weight Budget1.0 MB transferred, 82 requestsPASS
Page Weight Budget
1.0 MB transferred, 82 requests
1.0 MB transferred, 82 requests
Info::
Page weighs 2.7 MB (1.0 MB transferred)
Warning::
JavaScript is 552 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 552 KB
Info::
82 HTTP requests
Info::
Estimated 0.22 g CO2 per page load
1.0 MB transferred
82 requests
0.22 g CO2 per page load
JavaScript 551.8 KiB 52%
Images 301.9 KiB 29%
Fonts 94.8 KiB 9%
HTML 58.0 KiB 5%
CSS 47.4 KiB 4%
Other 1.3 KiB 0%
Other 1.1 KiB 0%
Other 804 B 0%
Other 556 B 0%
0 2.4 MB 4.9 MB
Under budget
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Why this matters
JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.
Source: web.dev
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 Loading10 fonts (95 KB)PASS
Font Loading
10 fonts (95 KB)
10 fonts (95 KB)
Info::
10 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
10
95 KB total
Render-blocking
0
of 10
Dominant font-display
swap
Most common across fonts
Font loading timeline
Transfer FOIT (block) FOUT (swap)
acier-bat-solid_400_nor... woff2 swap
Size 0 KB
Load time 95 ms
Start 118 ms
Risk FOUT — text flashes from fallback to web font
subset-Avenir-Roman.woff2 woff2 swap
Size 0 KB
Load time 95 ms
Start 118 ms
Risk FOUT — text flashes from fallback to web font
subset-Avenir-Medium.woff2 woff2 swap
Size 0 KB
Load time 95 ms
Start 118 ms
Risk FOUT — text flashes from fallback to web font
subset-Avenir-Heavy.woff2 woff2 swap
Size 0 KB
Load time 94 ms
Start 118 ms
Risk FOUT — text flashes from fallback to web font
subset-Kessel105W00-Bol... woff2 swap
Size 0 KB
Load time 66 ms
Start 147 ms
Risk FOUT — text flashes from fallback to web font
acier-bat-solid_400_nor... woff2 swap
Size 10 KB
Load time 53 ms
Start 221 ms
Risk FOUT — text flashes from fallback to web font
subset-Avenir-Roman.woff2 woff2 swap
Size 19 KB
Load time 85 ms
Start 221 ms
Risk FOUT — text flashes from fallback to web font
subset-Avenir-Medium.woff2 woff2 swap
Size 31 KB
Load time 91 ms
Start 221 ms
Risk FOUT — text flashes from fallback to web font
subset-Avenir-Heavy.woff2 woff2 swap
Size 18 KB
Load time 85 ms
Start 221 ms
Risk FOUT — text flashes from fallback to web font
subset-Kessel105W00-Bol... woff2 swap
Size 17 KB
Load time 70 ms
Start 383 ms
Risk FOUT — text flashes from fallback to web font
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
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 Hints8 hints, 0 missing preconnectsPASS
Resource Hints
8 hints, 0 missing preconnects
8 hints, 0 missing preconnects
Info::
Page uses 8 resource hint(s)
Current Resource Hints
preconnect 2
preload 6
dns-prefetch—
prefetch—
8 resource hints configured
A+HTTP/3 (QUIC)HTTP/3 advertised via Alt-SvcPASS
HTTP/3 (QUIC)
HTTP/3 advertised via Alt-Svc
HTTP/3 advertised via Alt-Svc
Info::
HTTP/3 (QUIC) is supported
First-load mobile users on cellular networks see meaningful latency improvements with HTTP/3. The QUIC transport collapses TLS + TCP handshakes into one and recovers faster from packet loss.
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,User-Agent
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::
`ETag` present -- conditional GET supported
APage Weight Inventory82 resources · 1.0 MB · 106 KB savings availablePASS
Page Weight Inventory
82 resources · 1.0 MB · 106 KB savings available
82 resources · 1.0 MB · 106 KB savings available
Warning::
Page weight 1.0 MB exceeds 1 MB target by 34 KB
Got: 1.0 MB Expected: ≤ 1 MB
Info::
~106 KB of savings available
Warning::
79 third-party resources (94% of weight)
82 resources · 1.0 MiB · 79 third-party 33.6 KiB over 1MB target
JavaScript 52% · 551.8 KiB
Image 29% · 303.0 KiB
Font 9% · 94.8 KiB
Document 6% · 58.2 KiB
CSS 4% · 47.4 KiB
Other 0% · 2.4 KiB
~105.7 KiB of savings available
Remove unused JavaScript: 105.7 KiB
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 82 resources | 1.0 MiB | ||||||
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.
A+CSS Performance DepthNo CSS performance depth issues detectedPASS
CSS Performance Depth
No CSS performance depth issues detected
No CSS performance depth issues detected
Info::
No CSS performance depth issues detected
Network Waterfall82 requests over 2339msINFO
Network Waterfall
82 requests over 2339ms
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
73% of JavaScript execution is third-party
First-party Third-party 1551ms · 457KB · £4/mo
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 465ms | 0 KB | — | £1/mo | Costly |
cdn.activatedigital.co.uk cdn.activatedigital.co.uk | Other | 398ms | 6 KB | — | £1/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 238ms | 178 KB | 40% | £1/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 155ms | 129 KB | — | £0/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 110ms | 45 KB | — | £0/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 104ms | 97 KB | 35% | £0/mo | Optional |
cdn.activatedigital.co.uk cdn.activatedigital.co.uk | Other | 82ms | 2 KB | — | £0/mo | Optional |
Unattributable
Other
Execution 465ms
Transfer 0 KB
Monthly Cost £1/mo
cdn.activatedigital.co.uk
Other
Execution 398ms
Transfer 6 KB
Monthly Cost £1/mo
Google Tag Manager
Tag Manager
Execution 238ms
Transfer 178 KB
Unused 40%
Monthly Cost £1/mo
Google Tag Manager
Tag Manager
Execution 155ms
Transfer 129 KB
Monthly Cost £0/mo
Facebook Pixel
Advertising
Execution 110ms
Transfer 45 KB
Monthly Cost £0/mo
Facebook Pixel
Advertising
Execution 104ms
Transfer 97 KB
Unused 35%
Monthly Cost £0/mo
cdn.activatedigital.co.uk
Other
Execution 82ms
Transfer 2 KB
Monthly Cost £0/mo
These scripts may cost more than they're worth
- Unattributable adds 465ms and costs ~£1/month
- cdn.activatedigital.co.uk adds 398ms and costs ~£1/month
- Google Tag Manager adds 238ms and costs ~£1/month
73% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.
Why this matters
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
Unattributable takes 465ms 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
cdn.activatedigital.co.uk takes 398ms 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
Google Tag Manager takes 238ms 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 (2026-04-12 — 2026-05-09)
LCP (p75)
1296 ms
92% good
INP (p75)
65 ms
99% good
CLS (p75)
0.020
85% good
FCP (p75)
882 ms
TTFB (p75)
636 ms
This origin passes Core Web Vitals assessment
Image Optimization62 images, 0 KB total, 0 KB wastedINFO
Image Optimization
62 images, 0 KB total, 0 KB wasted
Image Optimization Audit
Total Images
62
Total Size
0 KB
Oversized
2
10 missing alt text 6 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.