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.
797 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.54 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
115 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.006
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
1.35 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.
5.29 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 BudgetAction3.3 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 BundlesAction58 scripts, 782 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 (63%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-11180044664&cx=c>m=4e64h1 | 137 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=4e64h1 | 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=4e64h1 | 155 KB | 62 KB (40%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-11131642192&cx=c>m=4e64h1 | 138 KB | 61 KB (44%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-11180044664 | 137 KB | 59 KB (44%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-16928388844&cx=c>m=4e64h1 | 178 KB | 57 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 · 3.3 MB · 782 KB savings availableFIX
~781.5 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 151 resources | 3.3 MiB | ||||||
BThird-Party Impact54% third-party, 0 ms blockingREVIEW
CImage OptimizationAction40 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
CJS Execution CostAction1106ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| Unattributable | 218ms | 3ms | 0ms | 3rd |
| https://moodle.com/ | 206ms | 24ms | 2ms | 1st |
| https://js.intercomcdn.com/frame-modern.db2b74ec.js | 160ms | 135ms | 14ms | 3rd |
| https://js.hs-analytics.net/analytics/1776798600000/23165921.js | 129ms | 98ms | 2ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-16928388844&cx=c>m=4e64h1 | 94ms | 80ms | 13ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-MVQ4CSM | 84ms | 70ms | 11ms | 3rd |
| https://moodle.com/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 | 75ms | 42ms | 2ms | 1st |
| https://www.googletagmanager.com/gtag/js?id=G-QWYJYEY9P5&cx=c>m=4e64h1 | 75ms | 64ms | 10ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-11180044664 | 65ms | 57ms | 8ms | 3rd |
A+Text CompressionAll text resources are compressedPASS
A+Font Loading6 fonts (915 KB)PASS
Web fonts
6
915 KB total
Render-blocking
0
of 6
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 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
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 4120msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 218ms | 0 KB | — | £4/mo | Costly |
js.intercomcdn.com js.intercomcdn.com | Other | 160ms | 193 KB | 63% | £3/mo | Optional |
HubSpot Analytics js.hs-analytics.net | Analytics | 129ms | 42 KB | — | £2/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 94ms | 178 KB | 32% | £2/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 84ms | 162 KB | 40% | £1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 75ms | 155 KB | 40% | £1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 65ms | 137 KB | 44% | £1/mo | Optional |
These scripts may cost more than they're worth
- Unattributable adds 218ms and costs ~£4/month
75% 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 218ms 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
63% 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