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.
2.36 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
8.60 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
3.69 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.171
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
5.99 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.
23.74 s
Page Load Progression
FPage Weight BudgetAction3.4 MB transferred, 68 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 ImpactAction100% third-party, 0 ms blockingFIX
FJS Execution CostAction8356ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.gq-magazine.co.uk/verso/static/2880.865952f35702ddfb7152.js | 2429ms | 1811ms | 104ms | 3rd |
| https://www.gq-magazine.co.uk/verso/static/presenter-bundles.d7384530fdc10d8b1f48.js | 1486ms | 1448ms | 11ms | 3rd |
| https://www.gq-magazine.co.uk/ | 1039ms | 32ms | 156ms | 3rd |
| Unattributable | 721ms | 24ms | 0ms | 3rd |
| https://privacy.condenastdigital.com/fides.js?property_id=FDS-JL76N6 | 588ms | 375ms | 175ms | 3rd |
| https://www.gq-magazine.co.uk/verso/static/1113.e5d6201548a2ec9583d0.js | 487ms | 241ms | 230ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-W2K49QH&l=dataLayer | 426ms | 371ms | 48ms | 3rd |
| https://www.gq-magazine.co.uk/LhkRFBJdaK72DvK7relfPgE_jSl73hrZ84XBXCDoLbgm1e97LS1U89T4_24Rmf0Kdo-9orJNRlaR_4M7dJkf5D1BBKk_DWDPSQn7jldYaSBTWIULLhrr3s6Bzzi8-Z2eYqpepFPSP27Q | 294ms | 259ms | 11ms | 3rd |
| https://www.gq-magazine.co.uk/verso/static/2519.8a55e989ba5af70e92d1.js | 211ms | 50ms | 131ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-KSK3JJ9>m=4e64k0 | 177ms | 131ms | 46ms | 3rd |
Showing top 10 of 14 scripts
FJS BundlesAction33 scripts, 1.0 MB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.gq-magazine.co.uk/verso/static/1113.e5d6201548a2ec9583d0.js | 554 KB | 275 KB (50%) | ✓ | 3rd |
| https://www.gq-magazine.co.uk/verso/static/2880.865952f35702ddfb7152.js | 297 KB | 150 KB (51%) | ✓ | 3rd |
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604200101/pubads_impl.js?cb=31097964 | 188 KB | 145 KB (77%) | ✓ | 3rd |
| https://www.gq-magazine.co.uk/verso/static/2519.8a55e989ba5af70e92d1.js | 304 KB | 141 KB (46%) | ✓ | 3rd |
| https://www.gq-magazine.co.uk/verso/static/1292.40f59c87ae47d8b12033.js | 156 KB | 116 KB (74%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-W2K49QH&l=dataLayer | 179 KB | 73 KB (41%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-KSK3JJ9>m=4e64k0 | 131 KB | 57 KB (43%) | ✓ | 3rd |
| https://ads-static.conde.digital/production/cns/builds/gq-uk/v6.js?v=12573 | 41 KB | 32 KB (78%) | ✓ | 3rd |
| https://www.gq-magazine.co.uk/LhkRFBJdaK72DvK7relfPgE_jSl73hrZ84XBXCDoLbgm1e97LS1U89T4_24Rmf0Kdo-9orJNRlaR_4M7dJkf5D1BBKk_DWDPSQn7jldYaSBTWIULLhrr3s6Bzzi8-Z2eYqpepFPSP27Q | 46 KB | 23 KB (52%) | ✓ | 3rd |
| https://globalservices.conde.digital/p77xzrbz9z.js | 26 KB | 21 KB (81%) | ✓ | 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 InventoryAction68 resources · 3.4 MB · 1.0 MB savings availableFIX
~1.0 MiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 68 resources | 3.4 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization18 images, 0 KB saveableREVIEW
Set explicit width and height to prevent CLS.
Performance issues directly impact user engagement and conversion rates.
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
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
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
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
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
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
A+Text CompressionAll text resources are compressedPASS
A+Font Loading6 fonts (343 KB)PASS
Web fonts
6
343 KB total
Render-blocking
0
of 6
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
Network Waterfall68 requests over 2130msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.gq-magazine.co.uk www.gq-magazine.co.uk | Other | 2429ms | 297 KB | 51% | £36/mo | Costly |
www.gq-magazine.co.uk www.gq-magazine.co.uk | Other | 1486ms | 32 KB | — | £22/mo | Costly |
www.gq-magazine.co.uk www.gq-magazine.co.uk | Other | 1039ms | 141 KB | — | £15/mo | Costly |
Unattributable Unattributable | Other | 721ms | 0 KB | — | £11/mo | Costly |
privacy.condenastdigital.com privacy.condenastdigital.com | Other | 588ms | 199 KB | — | £9/mo | Costly |
www.gq-magazine.co.uk www.gq-magazine.co.uk | Other | 487ms | 554 KB | 50% | £7/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 426ms | 179 KB | 41% | £6/mo | Costly |
www.gq-magazine.co.uk www.gq-magazine.co.uk | Other | 294ms | 46 KB | 52% | £4/mo | Costly |
www.gq-magazine.co.uk www.gq-magazine.co.uk | Other | 211ms | 304 KB | 46% | £3/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 177ms | 131 KB | 43% | £3/mo | Optional |
securepubads.g.doubleclick.net securepubads.g.doubleclick.net | Other | 156ms | 188 KB | 77% | £2/mo | Optional |
www.gq-magazine.co.uk www.gq-magazine.co.uk | Other | 144ms | 8 KB | — | £2/mo | Optional |
www.gq-magazine.co.uk www.gq-magazine.co.uk | Other | 132ms | 156 KB | 74% | £2/mo | Optional |
securepubads.g.doubleclick.net securepubads.g.doubleclick.net | Other | 66ms | 34 KB | — | £1/mo | Optional |
These scripts may cost more than they're worth
- www.gq-magazine.co.uk adds 2429ms and costs ~£36/month
- www.gq-magazine.co.uk adds 1486ms and costs ~£22/month
- www.gq-magazine.co.uk adds 1039ms and costs ~£15/month
- Unattributable adds 721ms and costs ~£11/month
- privacy.condenastdigital.com adds 588ms and costs ~£9/month
- www.gq-magazine.co.uk adds 487ms and costs ~£7/month
- Google Tag Manager adds 426ms and costs ~£6/month
- www.gq-magazine.co.uk adds 294ms and costs ~£4/month
- www.gq-magazine.co.uk adds 211ms and costs ~£3/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
www.gq-magazine.co.uk takes 2429ms 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
51% of www.gq-magazine.co.uk'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.gq-magazine.co.uk takes 1486ms 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.gq-magazine.co.uk takes 1039ms 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 721ms 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
privacy.condenastdigital.com takes 588ms 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.gq-magazine.co.uk takes 487ms 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 426ms 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.gq-magazine.co.uk takes 294ms 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 www.gq-magazine.co.uk'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.gq-magazine.co.uk takes 211ms 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
77% 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
74% of www.gq-magazine.co.uk'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