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.
799 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
3.76 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
476 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.023
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
2.15 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.
5.70 s
Page Load Progression
FPage Weight BudgetAction6.5 MB transferred, 144 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
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.
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
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FJS Execution CostAction3976ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.theringer.com/_next/static/chunks/pages/_app-ee3d012350456bf5.js?dpl=c8a36f4e5aecd402ee36208bf365aa55021c19c7 | 1847ms | 902ms | 83ms | 3rd |
| https://www.theringer.com/_next/static/chunks/framework-48bf801e6e8f0470.js?dpl=c8a36f4e5aecd402ee36208bf365aa55021c19c7 | 899ms | 737ms | 7ms | 3rd |
| Unattributable | 407ms | 104ms | 0ms | 3rd |
| https://www.theringer.com/ | 239ms | 5ms | 0ms | 3rd |
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604210101/pubads_impl.js?cb=31098008 | 142ms | 116ms | 10ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-5TPFJR6J | 126ms | 109ms | 7ms | 3rd |
| https://cdn.concert.io/lib/concert-ads/v2-latest/concert_ads.js | 98ms | 86ms | 8ms | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202601.2.0/otBannerSdk.js | 92ms | 58ms | 10ms | 3rd |
| https://micro.rubiconproject.com/prebid/dynamic/7470.js | 70ms | 61ms | 9ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-BJM043QM72 | 55ms | 46ms | 9ms | 3rd |
FJS BundlesAction44 scripts, 1.2 MB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.theringer.com/_next/static/chunks/pages/_app-ee3d012350456bf5.js?dpl=c8a36f4e5aecd402ee36208bf365aa55021c19c7 | 888 KB | 521 KB (59%) | ✓ | 3rd |
| https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js | 362 KB | 243 KB (67%) | ✓ | 3rd |
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604210101/pubads_impl.js?cb=31098008 | 188 KB | 105 KB (56%) | ✓ | 3rd |
| https://micro.rubiconproject.com/prebid/dynamic/7470.js | 157 KB | 91 KB (58%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-5TPFJR6J | 131 KB | 69 KB (53%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-BJM043QM72 | 157 KB | 65 KB (42%) | ✓ | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202601.2.0/otBannerSdk.js | 128 KB | 62 KB (48%) | ✓ | 3rd |
| https://cdn.concert.io/lib/concert-ads/v2-latest/concert_ads.js | 104 KB | 53 KB (51%) | ✓ | 3rd |
| https://c.amazon-adsystem.com/aax2/apstag.js | 91 KB | 38 KB (42%) | ✓ | 3rd |
| https://www.theringer.com/_next/static/chunks/pages/index-9e0928ac59586ac9.js?dpl=c8a36f4e5aecd402ee36208bf365aa55021c19c7 | 1 KB | — | ✓ | 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 InventoryAction144 resources · 6.5 MB · 1.2 MB savings availableFIX
~1.2 MiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 144 resources | 6.5 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization32 images, 0 KB saveableREVIEW
A+Text CompressionAll text resources are compressedPASS
A+Font Loading12 fonts (955 KB)PASS
Web fonts
12
955 KB total
Render-blocking
0
of 12
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Convert to woff2 for ~30% smaller file size
- 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
- 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 ~186 KB and ~372 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: Google Cloud
Network Waterfall144 requests over 5116msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.theringer.com www.theringer.com | Other | 1847ms | 888 KB | 59% | €20/mo | Costly |
www.theringer.com www.theringer.com | Other | 899ms | 43 KB | — | €10/mo | Costly |
Unattributable Unattributable | Other | 407ms | 0 KB | — | €4/mo | Costly |
www.theringer.com www.theringer.com | Other | 239ms | 97 KB | — | €3/mo | Costly |
securepubads.g.doubleclick.net securepubads.g.doubleclick.net | Other | 142ms | 188 KB | 56% | €2/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 126ms | 131 KB | 53% | €1/mo | Optional |
cdn.concert.io cdn.concert.io | Other | 98ms | 104 KB | 51% | €1/mo | Optional |
OneTrust cdn.cookielaw.org | Consent | 92ms | 128 KB | 48% | €1/mo | Essential |
micro.rubiconproject.com micro.rubiconproject.com | Other | 70ms | 157 KB | 58% | €1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 55ms | 157 KB | 42% | €1/mo | Optional |
These scripts may cost more than they're worth
- www.theringer.com adds 1847ms and costs ~€20/month
- www.theringer.com adds 899ms and costs ~€10/month
- Unattributable adds 407ms and costs ~€4/month
- www.theringer.com adds 239ms 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.theringer.com takes 1847ms 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
59% of www.theringer.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.theringer.com takes 899ms 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 407ms 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.theringer.com takes 239ms 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
56% 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
53% of Google Tag Manager'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
51% of cdn.concert.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
58% of micro.rubiconproject.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