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.
7.84 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
28.12 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
1.29 s
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.
8.78 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.
28.44 s
Page Load Progression
375 ms 750 ms 1.1 s 1.5 s 1.9 s 2.2 s
2.6 s
3.0 sFPage Weight BudgetAction3.4 MB transferred, 151 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 CostAction5093ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| Unattributable | 841ms | 28ms | 0ms | 3rd |
| https://js.intercomcdn.com/vendor-modern.80eace52.js | 671ms | 541ms | 40ms | 3rd |
| https://js.hs-analytics.net/analytics/1776798600000/23165921.js | 502ms | 378ms | 11ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-16928388844&cx=c>m=4e64k0h2 | 386ms | 330ms | 50ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-MVQ4CSM | 327ms | 282ms | 37ms | 3rd |
| https://moodle.com/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 | 285ms | 151ms | 7ms | 1st |
| https://moodle.com/ | 274ms | 24ms | 8ms | 1st |
| https://www.googletagmanager.com/gtag/js?id=G-QWYJYEY9P5&cx=c>m=4e64k0h2 | 248ms | 208ms | 38ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-11180044664 | 212ms | 180ms | 31ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-11131642192&cx=c>m=4e64k0h2 | 171ms | 142ms | 28ms | 3rd |
Showing top 10 of 22 scripts
FJS BundlesAction58 scripts, 781 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://js.intercomcdn.com/frame-modern.db2b74ec.js | 193 KB | 122 KB (64%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-11180044664&cx=c>m=4e64k0h2 | 136 KB | 103 KB (75%) | ✓ | 3rd |
| https://js.intercomcdn.com/vendor-modern.80eace52.js | 144 KB | 86 KB (60%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/destination?id=AW-955373679&cx=c>m=4e64k0h2 | 137 KB | 67 KB (49%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-MVQ4CSM | 162 KB | 65 KB (40%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-QWYJYEY9P5&cx=c>m=4e64k0h2 | 155 KB | 62 KB (40%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-11131642192&cx=c>m=4e64k0h2 | 138 KB | 61 KB (44%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-11180044664 | 137 KB | 58 KB (43%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-16928388844&cx=c>m=4e64k0h2 | 178 KB | 58 KB (32%) | ✓ | 3rd |
| https://script.hotjar.com/modules.6a0f3932cb1341a35c18.js | 57 KB | 38 KB (67%) | ✓ | 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 InventoryAction151 resources · 3.4 MB · 781 KB savings availableFIX
~780.9 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 151 resources | 3.4 MiB | ||||||
BThird-Party Impact51% third-party, 0 ms blockingREVIEW
CImage OptimizationAction39 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
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
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 Loading7 fonts (974 KB)PASS
Web fonts
7
974 KB total
Render-blocking
0
of 7
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
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 ~351 KB and ~702 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource Hints2 hints, 0 missing preconnectsPASS
Current Resource Hints
2 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
A+HTTP Cachingmax-age=600 (10 minutes)PASS
max-age=600, must-revalidate
| Directive | Value | Meaning |
|---|---|---|
| max-age | 600 | Cache for 10 minutes |
| must-revalidate | — | Must recheck with server after expiry |
Network Waterfall151 requests over 4964msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 841ms | 0 KB | — | £15/mo | Costly |
js.intercomcdn.com js.intercomcdn.com | Other | 671ms | 144 KB | 60% | £12/mo | Costly |
HubSpot Analytics js.hs-analytics.net | Analytics | 502ms | 42 KB | — | £9/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 386ms | 178 KB | 32% | £7/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 327ms | 162 KB | 40% | £6/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 248ms | 155 KB | 40% | £4/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 212ms | 137 KB | 43% | £4/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 171ms | 138 KB | 44% | £3/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 151ms | 137 KB | 49% | £3/mo | Optional |
Hotjar script.hotjar.com | Session Replay | 140ms | 57 KB | 67% | £2/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 128ms | 16 KB | — | £2/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 112ms | 97 KB | 33% | £2/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 110ms | 44 KB | — | £2/mo | Optional |
j.6sc.co j.6sc.co | Other | 75ms | 19 KB | — | £1/mo | Optional |
js.hubspot.com js.hubspot.com | Other | 59ms | 28 KB | — | £1/mo | Optional |
js.intercomcdn.com js.intercomcdn.com | Other | 55ms | 193 KB | 64% | £1/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 53ms | 16 KB | — | £1/mo | Optional |
These scripts may cost more than they're worth
- Unattributable adds 841ms and costs ~£15/month
- js.intercomcdn.com adds 671ms and costs ~£12/month
- HubSpot Analytics adds 502ms and costs ~£9/month
- Google Tag Manager adds 386ms and costs ~£7/month
- Google Tag Manager adds 327ms and costs ~£6/month
- Google Tag Manager adds 248ms and costs ~£4/month
- Google Tag Manager adds 212ms and costs ~£4/month
83% 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
Unattributable takes 841ms 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
js.intercomcdn.com takes 671ms 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
60% of js.intercomcdn.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
HubSpot Analytics takes 502ms 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
Google Tag Manager takes 386ms 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
Google Tag Manager takes 327ms 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
Google Tag Manager takes 248ms 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
Google Tag Manager takes 212ms 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
67% of Hotjar'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
64% of js.intercomcdn.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