Performance
· 27 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.
6.49 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
19.34 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
1.62 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.035
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
11.43 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.
21.25 s
Page Load Progression
DPage Weight BudgetAction2.3 MB transferred, 211 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
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 CostAction13367ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://ahrefs.com/assets/esbuild/chunk-DWMEZKRQ-release-20261016-bk51852-a1e6697d13174.js | 3846ms | 3255ms | 8ms | 3rd |
| https://ahrefs.com/ | 3342ms | 110ms | 16ms | 3rd |
| Unattributable | 2644ms | 57ms | 0ms | 1st |
| https://www.googletagmanager.com/gtag/js?id=AW-792779674 | 655ms | 530ms | 81ms | 3rd |
| https://connect.facebook.net/en_US/fbevents.js | 597ms | 525ms | 67ms | 3rd |
| https://ahrefs.com/cdn-cgi/challenge-platform/scripts/jsd/main.js | 494ms | 468ms | 13ms | 3rd |
| https://ahrefs.com/assets/esbuild/chunk-AR5C24UC-release-20261016-bk51852-a1e6697d13174.js | 411ms | 11ms | 0ms | 3rd |
| https://connect.facebook.net/signals/config/1511271639109289?v=2.9.419&r=stable&domain=ahrefs.com&im=1&hme=7459fa3e38c2784dbaf309537bed5fa7e8560fab51fb61e53e5ffafeb46a02a9&ex_m=118%2C241%2C171%2C27%2C82%2C83%2C162%2C78%2C77%2C11%2C181%2C102%2C20%2C153%2C141%2C46%2C85%2C90%2C149%2C176%2C183%2C8%2C4%2C5%2C7%2C6%2C3%2C103%2C115%2C32%2C17%2C31%2C18%2C33%2C34%2C35%2C37%2C55%2C163%2C87%2C126%2C22%2C24%2C51%2C47%2C49%2C48%2C95%2C104%2C108%2C124%2C160%2C164%2C53%2C125%2C29%2C26%2C133%2C79%2C43%2C166%2C165%2C167%2C157%2C155%2C30%2C42%2C66%2C123%2C178%2C80%2C21%2C128%2C93%2C76%2C23%2C97%2C98%2C130%2C96%2C151%2C150%2C154%2C109%2C177%2C180%2C41%2C56%2C127%2C54%2C161%2C72%2C185%2C110%2C184%2C210%2C255%2C84%2C274%2C273%2C272%2C14%2C25%2C28%2C40%2C62%2C117%2C68%2C10%2C73%2C111%2C112%2C113%2C119%2C144%2C38%2C36%2C146%2C147%2C148%2C143%2C142%2C172%2C86%2C175%2C173%2C174%2C57%2C69%2C67%2C137%2C19%2C179%2C52%2C324%2C325%2C326%2C323%2C339%2C361%2C248%2C237%2C70%2C238%2C236%2C364%2C355%2C59%2C249%2C121%2C145%2C92%2C135%2C61%2C134%2C140%2C139%2C65%2C74%2C168%2C88%2C89%2C129%2C44%2C39%2C60%2C63%2C114%2C182%2C1%2C138%2C16%2C136%2C12%2C2%2C64%2C105%2C15%2C75%2C71%2C132%2C101%2C100%2C187%2C188%2C106%2C107%2C9%2C116%2C186%2C58%2C158%2C99%2C91%2C81%2C131%2C120%2C169%2C50%2C159%2C0%2C94%2C152%2C156%2C170%2C45%2C122%2C13%2C189 | 382ms | 320ms | 55ms | 3rd |
| https://cdn-cookieyes.com/client_data/f9ad6b34a3cd7bccc042d6b6/script.js | 303ms | 267ms | 5ms | 3rd |
| https://ahrefs.com/assets/esbuild/chunk-56ZAPI2P-release-20261016-bk51852-a1e6697d13174.js | 255ms | 2ms | 0ms | 3rd |
Showing top 10 of 15 scripts
DJS BundlesAction91 scripts, 327 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://ahrefs.com/assets/esbuild/chunk-DWMEZKRQ-release-20261016-bk51852-a1e6697d13174.js | 332 KB | 140 KB (42%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-792779674 | 167 KB | 58 KB (35%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-792779674 | 0 KB | 58 KB (35%) | ✓ | 3rd |
| https://connect.facebook.net/en_US/fbevents.js | 111 KB | 38 KB (34%) | ✓ | 3rd |
| https://connect.facebook.net/signals/config/1511271639109289?v=2.9.419&r=stable&domain=ahrefs.com&im=1&hme=7459fa3e38c2784dbaf309537bed5fa7e8560fab51fb61e53e5ffafeb46a02a9&ex_m=118%2C241%2C171%2C27%2C82%2C83%2C162%2C78%2C77%2C11%2C181%2C102%2C20%2C153%2C141%2C46%2C85%2C90%2C149%2C176%2C183%2C8%2C4%2C5%2C7%2C6%2C3%2C103%2C115%2C32%2C17%2C31%2C18%2C33%2C34%2C35%2C37%2C55%2C163%2C87%2C126%2C22%2C24%2C51%2C47%2C49%2C48%2C95%2C104%2C108%2C124%2C160%2C164%2C53%2C125%2C29%2C26%2C133%2C79%2C43%2C166%2C165%2C167%2C157%2C155%2C30%2C42%2C66%2C123%2C178%2C80%2C21%2C128%2C93%2C76%2C23%2C97%2C98%2C130%2C96%2C151%2C150%2C154%2C109%2C177%2C180%2C41%2C56%2C127%2C54%2C161%2C72%2C185%2C110%2C184%2C210%2C255%2C84%2C274%2C273%2C272%2C14%2C25%2C28%2C40%2C62%2C117%2C68%2C10%2C73%2C111%2C112%2C113%2C119%2C144%2C38%2C36%2C146%2C147%2C148%2C143%2C142%2C172%2C86%2C175%2C173%2C174%2C57%2C69%2C67%2C137%2C19%2C179%2C52%2C324%2C325%2C326%2C323%2C339%2C361%2C248%2C237%2C70%2C238%2C236%2C364%2C355%2C59%2C249%2C121%2C145%2C92%2C135%2C61%2C134%2C140%2C139%2C65%2C74%2C168%2C88%2C89%2C129%2C44%2C39%2C60%2C63%2C114%2C182%2C1%2C138%2C16%2C136%2C12%2C2%2C64%2C105%2C15%2C75%2C71%2C132%2C101%2C100%2C187%2C188%2C106%2C107%2C9%2C116%2C186%2C58%2C158%2C99%2C91%2C81%2C131%2C120%2C169%2C50%2C159%2C0%2C94%2C152%2C156%2C170%2C45%2C122%2C13%2C189 | 95 KB | 33 KB (35%) | ✓ | 3rd |
| https://ahrefs.com/assets/esbuild/chunk-DVKMQHEU-release-20261016-bk51852-a1e6697d13174.js | 1 KB | — | ✓ | 3rd |
| https://ahrefs.com/assets/esbuild/chunk-VLJDMWGG-release-20261016-bk51852-a1e6697d13174.js | 2 KB | — | ✓ | 3rd |
| https://static.cloudflareinsights.com/beacon.min.js/vce701823e78c4301a35b7e07294d87301792088814092 | 10 KB | — | ✓ | 3rd |
| https://ahrefs.com/cdn-cgi/scripts/5c5dd728/cloudflare-static/email-decode.min.js | 1 KB | — | ✓ | 3rd |
| https://static.ahrefs.com/app/assets/js/web_analytics/analytics-staging.js?version=release-20261016-bk51852-a1e6697d13174 | 3 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
DPage Weight InventoryAction211 resources · 2.3 MB · 327 KB savings availableFIX
~327.3 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 211 resources | 2.3 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization85 images, 0 KB saveableREVIEW
BHTTP/3 (QUIC)HTTP/3 not advertisedREVIEW
CDocument CompressionActionDocument response served uncompressedREVIEW
BAsset Compression2 of 2 asset hosts still on gzipREVIEW
BMain HTML Cache-ControlNo Cache-Control header on main HTML responseREVIEW
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
BJavaScript Blocking2 JS blocking issue(s) detectedREVIEW
A+Text CompressionAll text resources are compressedPASS
A+Font Loading3 fonts (290 KB)PASS
Web fonts
3
290 KB total
Render-blocking
0
of 3
Dominant font-display
swap
Most common across fonts
Font loading timeline
- 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 ~84 KB and ~168 ms
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+LCP Image PreloadLCP preload audit not availablePASS
A+Server Response Intelligence1 server-response signal(s) detectedPASS
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
ACSS Performance Depth1 CSS depth issue(s) 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 Waterfall211 requests over 4857msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
ahrefs.com ahrefs.com | Other | 3846ms | 332 KB | 42% | €62/mo | Costly |
ahrefs.com ahrefs.com | Other | 3342ms | 83 KB | — | €53/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 655ms | 0 KB | 35% | €10/mo | Costly |
Facebook Pixel connect.facebook.net | Advertising | 597ms | 111 KB | 34% | €10/mo | Costly |
ahrefs.com ahrefs.com | Other | 494ms | 0 KB | — | €8/mo | Costly |
ahrefs.com ahrefs.com | Other | 411ms | 10 KB | — | €7/mo | Costly |
Facebook Pixel connect.facebook.net | Advertising | 382ms | 95 KB | 35% | €6/mo | Costly |
cdn-cookieyes.com cdn-cookieyes.com | Other | 303ms | 9 KB | — | €5/mo | Costly |
ahrefs.com ahrefs.com | Other | 255ms | 2 KB | — | €4/mo | Costly |
cdn-cookieyes.com cdn-cookieyes.com | Other | 98ms | 9 KB | — | €2/mo | Optional |
LinkedIn Insight snap.licdn.com | Advertising | 93ms | 21 KB | — | €1/mo | Optional |
static.ahrefs.com static.ahrefs.com | Other | 84ms | 3 KB | — | €1/mo | Optional |
Twitter/X Pixel static.ads-twitter.com | Advertising | 82ms | 17 KB | — | €1/mo | Optional |
www.redditstatic.com www.redditstatic.com | Other | 82ms | 19 KB | — | €1/mo | Optional |
These scripts may cost more than they're worth
- ahrefs.com adds 3846ms and costs ~€62/month
- ahrefs.com adds 3342ms and costs ~€53/month
- Google Tag Manager adds 655ms and costs ~€10/month
- Facebook Pixel adds 597ms and costs ~€10/month
- ahrefs.com adds 494ms and costs ~€8/month
- ahrefs.com adds 411ms and costs ~€7/month
- Facebook Pixel adds 382ms and costs ~€6/month
- cdn-cookieyes.com adds 303ms and costs ~€5/month
- ahrefs.com adds 255ms and costs ~€4/month
80% 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
ahrefs.com takes 3846ms 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
ahrefs.com takes 3342ms 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 655ms 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
Facebook Pixel takes 597ms 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
ahrefs.com takes 494ms 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
ahrefs.com takes 411ms 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
Facebook Pixel 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
cdn-cookieyes.com takes 303ms 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
ahrefs.com takes 255ms 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
Image Optimization114 images, 165 KB total, 0 KB wastedINFO
Image Optimization Audit
Total Images
114
Total Size
165 KB