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.
1.79 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
3.10 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
1.41 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.021
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
4.39 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.
19.21 s
Page Load Progression
FPage Weight BudgetAction3.0 MB transferred, 53 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
DThird-Party ImpactAction76% third-party, 0 ms blockingFIX
FJS Execution CostAction4005ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js | 693ms | 571ms | 102ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-NNLRXK | 562ms | 478ms | 61ms | 3rd |
| Unattributable | 420ms | 10ms | 0ms | 3rd |
| https://ielts.org/ | 416ms | 26ms | 4ms | 1st |
| https://cdn-ukwest.onetrust.com/scripttemplates/202401.2.0/otBannerSdk.js | 382ms | 228ms | 96ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-X5M3D7HLQQ&cx=c>m=4e64k1 | 274ms | 231ms | 39ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-444SGTFNSL&cx=c>m=4e64k1 | 242ms | 203ms | 37ms | 3rd |
| https://www.googletagmanager.com/gtag/destination?id=DC-10628837&cx=c>m=4e64k1 | 212ms | 148ms | 60ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-17612866914&cx=c>m=4e64k1 | 192ms | 147ms | 45ms | 3rd |
| https://www.googletagmanager.com/gtag/destination?id=DC-13517822&cx=c>m=4e64k1 | 190ms | 148ms | 41ms | 3rd |
Showing top 10 of 13 scripts
FJS BundlesAction20 scripts, 1.2 MB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js | 362 KB | 176 KB (49%) | ✓ | 3rd |
| https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js | 362 KB | 176 KB (49%) | ✓ | 3rd |
| https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js | 0 KB | 176 KB (49%) | ✓ | 3rd |
| https://ielts.org/dist/js/main.js?1773649603 | 94 KB | 77 KB (82%) | ✓ | 1st |
| https://www.googletagmanager.com/gtag/destination?id=DC-13517822&cx=c>m=4e64k1 | 150 KB | 72 KB (48%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/destination?id=AW-1010674422&cx=c>m=4e64k1 | 144 KB | 71 KB (49%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/destination?id=AW-1010263145&cx=c>m=4e64k1 | 146 KB | 67 KB (46%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-NNLRXK | 181 KB | 66 KB (36%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-444SGTFNSL&cx=c>m=4e64k1 | 173 KB | 65 KB (38%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/destination?id=DC-10628837&cx=c>m=4e64k1 | 130 KB | 65 KB (50%) | ✓ | 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 InventoryAction53 resources · 3.0 MB · 1.2 MB savings availableFIX
~1.2 MiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 53 resources | 3.0 MiB | ||||||
BImage Optimization6 images, 0 KB saveableREVIEW
A+Text CompressionAll text resources are compressedPASS
A+Font Loading7 fonts (419 KB)PASS
Web fonts
7
419 KB total
Render-blocking
0
of 7
Dominant font-display
swap
Most common across fonts
Font loading timeline
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
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource Hints5 hints, 0 missing preconnectsPASS
Current Resource Hints
5 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, stale-while-revalidate=30, stale-if-error=86400
| Directive | Value | Meaning |
|---|---|---|
| max-age | 600 | Cache for 10 minutes |
| stale-while-revalidate | 30 | Serve stale for 30 seconds while fetching fresh |
| stale-if-error | 86400 |
Network Waterfall53 requests over 1519msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.gstatic.com www.gstatic.com | Other | 693ms | 0 KB | 49% | €8/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 562ms | 181 KB | 36% | €6/mo | Costly |
Unattributable Unattributable | Other | 420ms | 0 KB | — | €5/mo | Costly |
cdn-ukwest.onetrust.com cdn-ukwest.onetrust.com | Other | 382ms | 104 KB | 52% | €4/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 274ms | 174 KB | 37% | €3/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 242ms | 173 KB | 38% | €3/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 212ms | 130 KB | 50% | €2/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 192ms | 143 KB | 45% | €2/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 190ms | 150 KB | 48% | €2/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 188ms | 146 KB | 46% | €2/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 155ms | 144 KB | 49% | €2/mo | Optional |
These scripts may cost more than they're worth
- www.gstatic.com adds 693ms and costs ~€8/month
- Google Tag Manager adds 562ms and costs ~€6/month
- Unattributable adds 420ms and costs ~€5/month
- cdn-ukwest.onetrust.com adds 382ms and costs ~€4/month
- Google Tag Manager adds 274ms and costs ~€3/month
- Google Tag Manager adds 242ms and costs ~€3/month
- Google Tag Manager adds 212ms and costs ~€2/month
88% 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.gstatic.com takes 693ms 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 562ms 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
Unattributable takes 420ms 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
cdn-ukwest.onetrust.com takes 382ms 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
52% of cdn-ukwest.onetrust.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
Google Tag Manager takes 274ms 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 242ms 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