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.
4.84 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
21.45 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
6.12 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.
9.01 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.
26.96 s
Page Load Progression
465 ms 929 ms 1.4 s 1.9 s 2.3 s
2.8 s
3.3 s
3.7 sFPage Weight BudgetAction2.8 MB transferred, 445 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
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
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FJS Execution CostAction16936ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| Unattributable | 3356ms | 1252ms | 0ms | 3rd |
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604160201/pubads_impl.js?cb=31097945 | 1467ms | 1092ms | 364ms | 3rd |
| https://www.trustedreviews.com/ | 1312ms | 185ms | 11ms | 3rd |
| https://cdn-magiclinks.trackonomics.net/client/static/v2/candr_b0a96_trustedreviews.js | 1305ms | 1291ms | 12ms | 3rd |
| https://c.amazon-adsystem.com/aax2/apstag.js | 1279ms | 1032ms | 201ms | 3rd |
| https://btloader.com/tag?o=5117374177476608&upapi=true | 905ms | 778ms | 57ms | 3rd |
| https://cdn.tagdeliver.com/hb/pbjs.9c39f69994876c34.js | 809ms | 597ms | 201ms | 3rd |
| https://www.trustedreviews.com/wp-content/themes/smart-mag/js/lazyload.js?ver=10.0.0 | 730ms | 126ms | 1ms | 3rd |
| https://cdn.tagdeliver.com/hb/pbjs.3a7a89e63705a589.js | 704ms | 588ms | 50ms | 3rd |
| https://securepubads.g.doubleclick.net/tag/js/gpt.js?ci-hb | 595ms | 450ms | 79ms | 3rd |
Showing top 10 of 30 scripts
FJS BundlesAction103 scripts, 1.7 MB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604160201/pubads_impl.js?cb=31097945 | 0 KB | 132 KB (70%) | ✓ | 3rd |
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604160201/pubads_impl.js?cb=31097945 | 188 KB | 132 KB (70%) | ✓ | 3rd |
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604160201/pubads_impl.js?cb=31097945 | 0 KB | 132 KB (70%) | ✓ | 3rd |
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604160201/pubads_impl.js?cb=31097945 | 0 KB | 132 KB (70%) | ✓ | 3rd |
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604160201/pubads_impl.js?cb=31097945 | 0 KB | 132 KB (70%) | ✓ | 3rd |
| https://cdn.tagdeliver.com/hb/pbjs.9c39f69994876c34.js | 0 KB | 90 KB (70%) | ✓ | 3rd |
| https://cdn.tagdeliver.com/hb/pbjs.9c39f69994876c34.js | 129 KB | 90 KB (70%) | ✓ | 3rd |
| https://cdn.tagdeliver.com/hb/pbjs.9c39f69994876c34.js | 0 KB | 90 KB (70%) | ✓ | 3rd |
| https://cdn.tagdeliver.com/hb/pbjs.9c39f69994876c34.js | 0 KB | 90 KB (70%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-ZJ29YKYDDR&cx=c>m=4e64k1 | 173 KB | 67 KB (39%) | ✓ | 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 InventoryAction445 resources · 2.8 MB · 1.7 MB savings availableFIX
~1.7 MiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 445 resources | 2.8 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization46 images, 0 KB saveableREVIEW
A+Text CompressionAll text resources are compressedPASS
A+Font Loading3 fonts (91 KB)PASS
Web fonts
3
91 KB total
Render-blocking
0
of 3
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 Hints4 hints, 0 missing preconnectsPASS
Current Resource Hints
4 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
Network Waterfall445 requests over 8936msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 3356ms | 0 KB | — | £35/mo | Costly |
securepubads.g.doubleclick.net securepubads.g.doubleclick.net | Other | 1467ms | 0 KB | 70% | £15/mo | Costly |
www.trustedreviews.com www.trustedreviews.com | Other | 1312ms | 33 KB | — | £14/mo | Costly |
cdn-magiclinks.trackonomics.net cdn-magiclinks.trackonomics.net | Other | 1305ms | 30 KB | — | £14/mo | Costly |
c.amazon-adsystem.com c.amazon-adsystem.com | Other | 1279ms | 0 KB | 42% | £13/mo | Costly |
btloader.com btloader.com | Other | 905ms | 0 KB | — | £9/mo | Costly |
cdn.tagdeliver.com cdn.tagdeliver.com | Other | 809ms | 0 KB | 70% | £8/mo | Costly |
www.trustedreviews.com www.trustedreviews.com | Other | 730ms | 5 KB | — | £8/mo | Costly |
cdn.tagdeliver.com cdn.tagdeliver.com | Other | 704ms | 135 KB | 37% | £7/mo | Costly |
securepubads.g.doubleclick.net securepubads.g.doubleclick.net | Other | 595ms | 0 KB | — | £6/mo | Costly |
cdn.tagdeliver.com cdn.tagdeliver.com | Other | 514ms | 25 KB | — | £5/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 493ms | 133 KB | 46% | £5/mo | Costly |
scripts.webcontentassessor.com scripts.webcontentassessor.com | Other | 457ms | 0 KB | 23% | £5/mo | Costly |
cdn.p-n.io cdn.p-n.io | Other | 435ms | 46 KB | — | £5/mo | Costly |
cmp.inmobi.com cmp.inmobi.com | Other | 397ms | 46 KB | — | £4/mo | Costly |
cmp.inmobi.com cmp.inmobi.com | Other | 338ms | 78 KB | 42% | £4/mo | Costly |
www.trustedreviews.com www.trustedreviews.com | Other | 291ms | 0 KB | — | £3/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 290ms | 173 KB | 39% | £3/mo | Costly |
www.trustedreviews.com www.trustedreviews.com | Other | 209ms | 33 KB | — | £2/mo | Costly |
config.aps.amazon-adsystem.com config.aps.amazon-adsystem.com | Other | 190ms | 0 KB | — | £2/mo | Optional |
squirrels-live.getsquirrel.co squirrels-live.getsquirrel.co | Other | 161ms | 1 KB | — | £2/mo | Optional |
static.chartbeat.com static.chartbeat.com | Other | 103ms | 16 KB | — | £1/mo | Optional |
lazypecan.com lazypecan.com | Other | 95ms | 36 KB | — | £1/mo | Optional |
www.trustedreviews.com www.trustedreviews.com | Other | 90ms | 26 KB | — | £1/mo | Optional |
cdn1.anonymised.io cdn1.anonymised.io | Other | 77ms | 26 KB | — | £1/mo | Optional |
script.4dex.io script.4dex.io | Other | 74ms | 19 KB | — | £1/mo | Optional |
cdnjs cdnjs.cloudflare.com | CDN | 73ms | 59 KB | 89% | £1/mo | Optional |
cdn.tagdeliver.com cdn.tagdeliver.com | Other | 71ms | 0 KB | — | £1/mo | Optional |
cdn.viously.com cdn.viously.com | Other | 65ms | 10 KB | — | £1/mo | Optional |
cdn1.anonymised.io cdn1.anonymised.io | Other | 54ms | 28 KB | 76% | £1/mo | Optional |
These scripts may cost more than they're worth
- Unattributable adds 3356ms and costs ~£35/month
- securepubads.g.doubleclick.net adds 1467ms and costs ~£15/month
- www.trustedreviews.com adds 1312ms and costs ~£14/month
- cdn-magiclinks.trackonomics.net adds 1305ms and costs ~£14/month
- c.amazon-adsystem.com adds 1279ms and costs ~£13/month
- btloader.com adds 905ms and costs ~£9/month
- cdn.tagdeliver.com adds 809ms and costs ~£8/month
- www.trustedreviews.com adds 730ms and costs ~£8/month
- cdn.tagdeliver.com adds 704ms and costs ~£7/month
- securepubads.g.doubleclick.net adds 595ms and costs ~£6/month
- cdn.tagdeliver.com adds 514ms and costs ~£5/month
- Google Tag Manager adds 493ms and costs ~£5/month
- scripts.webcontentassessor.com adds 457ms and costs ~£5/month
- cdn.p-n.io adds 435ms and costs ~£5/month
- cmp.inmobi.com adds 397ms and costs ~£4/month
- cmp.inmobi.com adds 338ms and costs ~£4/month
- www.trustedreviews.com adds 291ms and costs ~£3/month
- Google Tag Manager adds 290ms and costs ~£3/month
- www.trustedreviews.com adds 209ms and costs ~£2/month
100% 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 3356ms 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
securepubads.g.doubleclick.net takes 1467ms 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
70% of securepubads.g.doubleclick.net'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
www.trustedreviews.com takes 1312ms 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-magiclinks.trackonomics.net takes 1305ms 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
c.amazon-adsystem.com takes 1279ms 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
btloader.com takes 905ms 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.tagdeliver.com takes 809ms 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
70% of cdn.tagdeliver.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
www.trustedreviews.com takes 730ms 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.tagdeliver.com takes 704ms 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
securepubads.g.doubleclick.net takes 595ms 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.tagdeliver.com takes 514ms 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 493ms 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
scripts.webcontentassessor.com takes 457ms 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.p-n.io takes 435ms 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
cmp.inmobi.com takes 397ms 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
cmp.inmobi.com takes 338ms 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
www.trustedreviews.com takes 291ms 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 290ms 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
www.trustedreviews.com takes 209ms 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
89% of cdnjs'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
76% of cdn1.anonymised.io'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