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.
702 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.69 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
560 ms
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.
1.59 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.
5.06 s
Page Load Progression
FPage Weight BudgetAction3.8 MB transferred, 130 requestsFIX
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
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
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
DJS Execution CostAction2801ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.thrillist.com/ | 455ms | 59ms | 1ms | 3rd |
| Unattributable | 412ms | 66ms | 0ms | 3rd |
| https://www.googletagmanager.com/gtag/destination?id=AW-926030959&cx=c>m=4e64h1 | 400ms | 367ms | 14ms | 3rd |
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604160201/pubads_impl.js | 289ms | 248ms | 23ms | 3rd |
| https://www.thrillist.com/_next/static/chunks/framework-65495d36b904136d2d33.js | 220ms | 200ms | 6ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-MPCB6D9>m_auth=>m_preview=>m_cookies_win=x | 210ms | 174ms | 25ms | 3rd |
| https://www.thrillist.com/_next/static/chunks/pages/homepage/thrillist-31666d721b993b933389.js | 189ms | 152ms | 1ms | 3rd |
| https://www.thrillist.com/_next/static/chunks/pages/_app-fe2768ac8a0df8711b35.js | 156ms | 116ms | 39ms | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202602.1.0/otBannerSdk.js | 140ms | 80ms | 20ms | 3rd |
| https://cdn.concert.io/lib/concert-ads/v2-latest/concert_ads.js | 138ms | 120ms | 15ms | 3rd |
Showing top 10 of 13 scripts
FJS BundlesAction40 scripts, 549 KB 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 | 188 KB | 129 KB (69%) | ✓ | 3rd |
| https://www.thrillist.com/_next/static/chunks/pages/_app-fe2768ac8a0df8711b35.js | 237 KB | 120 KB (51%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-MPCB6D9>m_auth=>m_preview=>m_cookies_win=x | 181 KB | 70 KB (39%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/destination?id=AW-926030959&cx=c>m=4e64h1 | 138 KB | 67 KB (49%) | ✓ | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202602.1.0/otBannerSdk.js | 129 KB | 61 KB (48%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-08GP3LVJ4D&cx=c>m=4e64h1 | 148 KB | 59 KB (40%) | ✓ | 3rd |
| https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js | 34 KB | 23 KB (68%) | ✓ | 3rd |
| https://cdn.concert.io/lib/concert-ads/v2-latest/concert_ads.js | 104 KB | 21 KB (52%) | ✓ | 3rd |
| https://www.thrillist.com/_next/static/chunks/1818.f53772fb821ec58056bb.js | 1 KB | — | ✓ | 3rd |
| https://www.thrillist.com/_next/static/chunks/framework-65495d36b904136d2d33.js | 40 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 InventoryAction130 resources · 3.8 MB · 549 KB savings availableFIX
~549.2 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 130 resources | 3.8 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
A+Text CompressionAll text resources are compressedPASS
AImage Optimization25 images, 0 KB saveablePASS
A+Font Loading9 fonts (311 KB)PASS
Web fonts
9
311 KB total
Render-blocking
0
of 9
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 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: Axis12 Ltd
Network Waterfall130 requests over 5700msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.thrillist.com www.thrillist.com | Other | 455ms | 62 KB | — | €2/mo | Costly |
Unattributable Unattributable | Other | 412ms | 0 KB | — | €2/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 400ms | 138 KB | 49% | €2/mo | Costly |
securepubads.g.doubleclick.net securepubads.g.doubleclick.net | Other | 289ms | 188 KB | 69% | €2/mo | Costly |
www.thrillist.com www.thrillist.com | Other | 220ms | 40 KB | — | €1/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 210ms | 181 KB | 39% | €1/mo | Costly |
www.thrillist.com www.thrillist.com | Other | 189ms | 6 KB | — | €1/mo | Optional |
www.thrillist.com www.thrillist.com | Other | 156ms | 237 KB | 51% | €1/mo | Optional |
OneTrust cdn.cookielaw.org | Consent | 140ms | 129 KB | 48% | €1/mo | Essential |
cdn.concert.io cdn.concert.io | Other | 138ms | 104 KB | 52% | €1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 86ms | 148 KB | 40% | €0/mo | Optional |
c.amazon-adsystem.com c.amazon-adsystem.com | Other | 56ms | 91 KB | — | €0/mo | Optional |
btloader.com btloader.com | Other | 51ms | 37 KB | — | €0/mo | Optional |
These scripts may cost more than they're worth
- www.thrillist.com adds 455ms and costs ~€2/month
- Unattributable adds 412ms and costs ~€2/month
- Google Tag Manager adds 400ms and costs ~€2/month
- securepubads.g.doubleclick.net adds 289ms and costs ~€2/month
- www.thrillist.com adds 220ms and costs ~€1/month
- Google Tag Manager adds 210ms and costs ~€1/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.thrillist.com takes 455ms 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 412ms 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 400ms 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 289ms 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
69% 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.thrillist.com takes 220ms 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 210ms 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.thrillist.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
52% 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