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Performance

· 23 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
87
GRADE
B
FIX
2
REVIEW
7
PASS
11
INFO
3

Performance-focused optimization plan with CWV assessment, top offenders, and time estimates

Mobile Desktop
82
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
79
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
100
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
91
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

2.44 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

2.44 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

506 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.006

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

2.44 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.

6.10 s

Page Load Progression

375 ms
750 ms
1.1 s
1.5 s
1.9 s
2.2 s
2.6 s
3.0 s
Checks
23
11 PASS 7 REVIEW 2 FIX
D
Third-Party Impact
Action
98% third-party, 0 ms blocking
FIX
98% third-party, 0 ms blocking
Warning::
Third-party code accounts for 98% of page weight (532.2 KiB of 540.4 KiB)
Info::
Third-party blocking time is low (0 ms)
98%
First-party Third-party
F
HTTP Caching
Action
No cache headers
FIX
No cache headers
Warning::
No Cache-Control header found
Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.

No Cache-Control header

Adding a Cache-Control header can significantly improve repeat-visit performance.

C
JS Execution Cost
Action
1429ms total JS execution
REVIEW
1429ms total JS execution
Warning::
https://cdnjs.cloudflare.com/ajax/libs/uikit/3.0.3...: 303ms CPU time
Warning::
https://www.googletagmanager.com/gtag/js?id=G-J0HD...: 276ms CPU time
Warning::
https://www.googletagmanager.com/gtag/js?id=G-JLT5...: 275ms CPU time
Warning::
Unattributable: 254ms CPU time
Info::
https://www.googletagmanager.com/gtm.js?id=GTM-T8Z...: 193ms CPU time
Warning::
Third-party scripts: 1368ms (96% of total)

Main Thread Breakdown

Script Evaluation 56% Other 19% Script Parsing & Compilation 13% Style & Layout 8%
ScriptTotalScriptingParse/CompileParty
https://cdnjs.cloudflare.com/ajax/libs/uikit/3.0.3/js/uikit.min.js303ms103ms16ms3rd
https://www.googletagmanager.com/gtag/js?id=G-J0HDFBP8SZ&cx=c&_slc=1276ms223ms50ms3rd
https://www.googletagmanager.com/gtag/js?id=G-JLT5PYGNHH&cx=c&gtm=4e6551275ms210ms61ms3rd
Unattributable254ms70ms0ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-T8Z9663193ms147ms44ms3rd
https://www.google-analytics.com/analytics.js68ms55ms7ms3rd
https://http3check.net/61ms10ms2ms1st
C
JS Bundles
Action
6 scripts, 214 KB unused
REVIEW
6 scripts, 214 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=G-JLT5...: 65 KB unused (43%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-J0HD...: 64 KB unused (44%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-T8Z...: 63 KB unused (50%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdnjs.cloudflare.com/ajax/libs/uikit/3.0.3...: 23 KB unused (64%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 214 KB
214 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=G-JLT5PYGNHH&cx=c&gtm=4e6551150 KB65 KB (43%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-J0HDFBP8SZ&cx=c&_slc=1145 KB64 KB (44%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-T8Z9663125 KB63 KB (50%)✓3rd
https://cdnjs.cloudflare.com/ajax/libs/uikit/3.0.3/js/uikit.min.js36 KB23 KB (64%)✓3rd
https://cdnjs.cloudflare.com/ajax/libs/uikit/3.0.3/js/uikit-icons.min.js15 KB—✓3rd
https://www.google-analytics.com/analytics.js21 KB—✓3rd

Consider code splitting or tree shaking to reduce unused code.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

C
Compression Algorithm
Action
Main response served uncompressed
REVIEW
Main response served uncompressed
Info::
Main HTML response has no Content-Encoding (uncompressed)
The main HTML document is served without compression. The Text Compression section above lists the broader picture; for the main response specifically, even gzip would shave ~70-80% off most text payloads.
B
Main HTML Cache-Control
No Cache-Control header on main HTML response
REVIEW
No Cache-Control header on main HTML response
Info::
Main HTML response has no Cache-Control header
Without an explicit Cache-Control, browsers fall back to heuristic caching (~10% of Last-Modified age). Set `Cache-Control: no-cache` or `max-age=300` for HTML to control freshness explicitly -- prevents stale auth state and SPA shell drift.
B
Server-Timing Observability
No Server-Timing header found
REVIEW
No Server-Timing header found
Info::
No Server-Timing header found
Server-Timing exposes backend timing breakdowns to browser DevTools (e.g., `db: 45ms; render: 120ms; cache: 2ms`). Useful for diagnosing slow pages without backend log access. Most modern frameworks (Next.js, Cloudflare Workers, Fastly) emit it automatically; absence on a managed platform usually means telemetry headers are stripped at the edge.
B
Page Weight Inventory
16 resources · 540 KB · 214 KB savings available
REVIEW
16 resources · 540 KB · 214 KB savings available
Info::
Within 1MB page-weight target
Got: 540 KB
Info::
~214 KB of savings available
Warning::
12 third-party resources (98% of weight)
16 resources · 540.4 KiB · 12 third-party Within 1MB page-weight target
JavaScript 91% · 493.2 KiB
CSS 5% · 24.5 KiB
Font 3% · 15.5 KiB
Image 1% · 4.6 KiB
Document 0% · 2.1 KiB
Other 0% · 504 B

~214.3 KiB of savings available

Remove unused JavaScript: 214.3 KiB
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Page Weight Budget
540 KB transferred, 16 requests
PASS
540 KB transferred, 16 requests
Info::
Page weighs 1.7 MB (540 KB transferred)
Info::
16 HTTP requests
Info::
Estimated 0.11 g CO2 per page load
540 KB / 2.4 MB budget
540 KB transferred
16 requests
0.11 g CO2 per page load
JavaScript 493.2 KiB 91%
CSS 24.5 KiB 5%
Fonts 15.5 KiB 3%
Images 2.5 KiB 0%
HTML 2.1 KiB 0%
Other 2.0 KiB 0%
Other 464 B 0%
Other 40 B 0%
0 2.4 MB 4.9 MB
Under budget
A+
Text Compression
All text resources are compressed
PASS
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+
Image Optimization
1 images, 0 KB saveable
PASS
1 images, 0 KB saveable
Info::
All images are well-optimized
1 images 3 KB
0 oversized -0 KB
1 legacy format
0 missing dimensions CLS risk
A+
Font Loading
1 fonts (15 KB)
PASS
1 fonts (15 KB)
Info::
1 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

1

15 KB total

Render-blocking

0

of 1

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 500 ms 1.0 s 1.5 s 2.0 s 2.5 s FCP 2.4 s LCP 2.4 shttps://fonts.gstatic.com/s/quicksand/v37/6xK-dSZaM9iE8KbpRA_LJ3z8mH9BOJvgkP8o58a-wjw3UD0.woff26xK-dSZaM9iE8KbpRA_LJ3z... https://fonts.gstatic.com/s/quicksand/v37/6xK-dSZaM9iE8KbpRA_LJ3z8mH9BOJvgkP8o58a-wjw3UD0.woff2 — 15.5 KiB — 5 ms — font-display: swap
6xK-dSZaM9iE8KbpRA_LJ3z... woff2 swap
Size 15 KB
Load time 5 ms
Start 128 ms
Risk FOUT — text flashes from fallback to web font
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 Caching
All resources properly cached
PASS
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+
Critical Rendering Path
No render-blocking resources
PASS
No render-blocking resources
Info::
No render-blocking resources detected
A+
Resource Hints
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
A+
HTTP/3 (QUIC)
HTTP/3 advertised via Alt-Svc
PASS
HTTP/3 advertised via Alt-Svc
Info::
HTTP/3 (QUIC) is supported
First-load mobile users on cellular networks see meaningful latency improvements with HTTP/3. The QUIC transport collapses TLS + TCP handshakes into one and recovers faster from packet loss.
A+
LCP Image Preload
LCP preload audit not available
PASS
LCP preload audit not available
Info::
LCP image preload audit not available for this scan
A+
Render-Blocking Resources
No render-blocking resources detected
PASS
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+
Third-Party Resources
No third-party resources detected
PASS
No third-party resources detected
Network Waterfall
16 requests over 552ms
INFO
0 ms 500 ms 1.0 s 1.5 s 2.0 s 2.5 s FCP 2.4 s LCP 2.4 shttps://http3check.net// https://http3check.net/ — 200 — 2.1 KiB — 12 ms — h2https://cdnjs.cloudflare.com/ajax/libs/uikit/3.0.3/css/uikit.min.csscdnjs.cloudflare.com/ajax/libs/uiki... https://cdnjs.cloudflare.com/ajax/libs/uikit/3.0.3/css/uikit.min.css — 200 — 22.1 KiB — 35 ms — h3https://cdnjs.cloudflare.com/ajax/libs/uikit/3.0.3/js/uikit.min.jscdnjs.cloudflare.com/ajax/libs/uiki... https://cdnjs.cloudflare.com/ajax/libs/uikit/3.0.3/js/uikit.min.js — 200 — 36.4 KiB — 28 ms — h3https://cdnjs.cloudflare.com/ajax/libs/uikit/3.0.3/js/uikit-icons.min.jscdnjs.cloudflare.com/ajax/libs/uiki... https://cdnjs.cloudflare.com/ajax/libs/uikit/3.0.3/js/uikit-icons.min.js — 200 — 15.4 KiB — 29 ms — h3https://fonts.googleapis.com/css?family=Quicksand:400fonts.googleapis.com/css?family=Qui... https://fonts.googleapis.com/css?family=Quicksand:400 — 200 — 943 B — 60 ms — h2https://http3check.net/static/style.css/static/style.css https://http3check.net/static/style.css — 200 — 1.5 KiB — 10 ms — h2https://www.googletagmanager.com/gtm.js?id=GTM-T8Z9663www.googletagmanager.com/gtm.js?id=... https://www.googletagmanager.com/gtm.js?id=GTM-T8Z9663 — 200 — 124.9 KiB — 114 ms — h2https://http3check.net/static/http3check-logo.svg/static/http3check-logo.svg https://http3check.net/static/http3check-logo.svg — 200 — 2.5 KiB — 5 ms — h3https://fonts.gstatic.com/s/quicksand/v37/6xK-dSZaM9iE8KbpRA_LJ3z8mH9BOJvgkP8o58a-wjw3UD0.woff2fonts.gstatic.com/s/quicksand/v37/6... https://fonts.gstatic.com/s/quicksand/v37/6xK-dSZaM9iE8KbpRA_LJ3z8mH9BOJvgkP8o58a-wjw3UD0.woff2 — 200 — 15.5 KiB — 5 ms — h3https://www.googletagmanager.com/gtag/js?id=G-JLT5PYGNHH&cx=c&gtm=4e6551www.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-JLT5PYGNHH&cx=c&gtm=4e6551 — 200 — 150.3 KiB — 111 ms — h2https://www.google-analytics.com/analytics.jswww.google-analytics.com/analytics.... https://www.google-analytics.com/analytics.js — 200 — 20.9 KiB — 18 ms — h2https://www.google-analytics.com/j/collect?v=1&_v=j102&a=651450174&t=pageview&_s=1&dl=https%3A%2F%2Fhttp3check.net%2F&ul=en-us&dt=HTTP%2F3%20Check&sr=412x823&vp=412x823&_u=YEBAAEABAAAAACAAI~&jid=2016070928&gjid=231450245&cid=1931933570.1778162900&tid=UA-49122931-5&_gid=901616769.1778162900&_r=1&_slc=1&gtm=45He6551n81T8Z9663v830758451za200zd830758451&gcd=13l3l3l3l1l1&dma=0&tag_exp=0~115938466~115938469~116363097~118463261&z=2143233268www.google-analytics.com/j/collect?... https://www.google-analytics.com/j/collect?v=1&_v=j102&a=651450174&t=pageview&_s=1&dl=https%3A%2F%2Fhttp3check.net%2F&ul=en-us&dt=HTTP%2F3%20Check&sr=412x823&vp=412x823&_u=YEBAAEABAAAAACAAI~&jid=2016070928&gjid=231450245&cid=1931933570.1778162900&tid=UA-49122931-5&_gid=901616769.1778162900&_r=1&_slc=1&gtm=45He6551n81T8Z9663v830758451za200zd830758451&gcd=13l3l3l3l1l1&dma=0&tag_exp=0~115938466~115938469~116363097~118463261&z=2143233268 — 200 — 464 B — 19 ms — h2https://www.googletagmanager.com/gtag/js?id=G-J0HDFBP8SZ&cx=c&_slc=1www.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-J0HDFBP8SZ&cx=c&_slc=1 — 200 — 145.3 KiB — 102 ms — h3https://www.google-analytics.com/g/collect?v=2&tid=G-JLT5PYGNHH&gtm=45je6551v869274423z8830758451za20gzb830758451zd830758451&_p=1778162899556&gcd=13l3l3l3l1l1&npa=0&dma=0&are=1&cid=1931933570.1778162900&frm=0&pscdl=noapi&rcb=4&sr=412x823&uaa=&uab=64&uafvl=Not-A.Brand%3B24.0.0.0%7CChromium%3B146.0.7680.164&uam=moto%20g%20power%20(2022)&uamb=1&uap=Android&uapv=11.0&uaw=0&ul=en-us&_s=1&tag_exp=0~115938466~115938469~116363097~117384405~118128922~118463262~118694324&sid=1778162899&sct=1&seg=0&dl=https%3A%2F%2Fhttp3check.net%2F&dt=HTTP%2F3%20Check&en=page_view&_fv=1&_ss=1&tfd=454www.google-analytics.com/g/collect?... https://www.google-analytics.com/g/collect?v=2&tid=G-JLT5PYGNHH&gtm=45je6551v869274423z8830758451za20gzb830758451zd830758451&_p=1778162899556&gcd=13l3l3l3l1l1&npa=0&dma=0&are=1&cid=1931933570.1778162900&frm=0&pscdl=noapi&rcb=4&sr=412x823&uaa=&uab=64&uafvl=Not-A.Brand%3B24.0.0.0%7CChromium%3B146.0.7680.164&uam=moto%20g%20power%20(2022)&uamb=1&uap=Android&uapv=11.0&uaw=0&ul=en-us&_s=1&tag_exp=0~115938466~115938469~116363097~117384405~118128922~118463262~118694324&sid=1778162899&sct=1&seg=0&dl=https%3A%2F%2Fhttp3check.net%2F&dt=HTTP%2F3%20Check&en=page_view&_fv=1&_ss=1&tfd=454 — 204 — 20 B — 83 ms — h3https://www.google-analytics.com/g/collect?v=2&tid=G-J0HDFBP8SZ&gtm=45je6551v9111320511za20g&_p=1778162899556&gcd=13l3l3l3l2l1&npa=0&dma=0&_eu=EBAI&are=1&cid=1931933570.1778162900&frm=0&ir=1&pscdl=noapi&rcb=15&sr=412x823&uaa=&uab=64&uafvl=Not-A.Brand%3B24.0.0.0%7CChromium%3B146.0.7680.164&uam=moto%20g%20power%20(2022)&uamb=1&uap=Android&uapv=11.0&uaw=0&ul=en-us&_s=1&tag_exp=0~115616985~115938466~115938468~116363097~118128922~118463262&dl=https%3A%2F%2Fhttp3check.net%2F&dt=HTTP%2F3%20Check&sid=1778162899&sct=1&seg=0&_tu=wAQ&en=page_view&_fv=1&_ss=1&_ee=1&gap.uat=0~115938466~115938469~116363097~118463261&tfd=532www.google-analytics.com/g/collect?... https://www.google-analytics.com/g/collect?v=2&tid=G-J0HDFBP8SZ&gtm=45je6551v9111320511za20g&_p=1778162899556&gcd=13l3l3l3l2l1&npa=0&dma=0&_eu=EBAI&are=1&cid=1931933570.1778162900&frm=0&ir=1&pscdl=noapi&rcb=15&sr=412x823&uaa=&uab=64&uafvl=Not-A.Brand%3B24.0.0.0%7CChromium%3B146.0.7680.164&uam=moto%20g%20power%20(2022)&uamb=1&uap=Android&uapv=11.0&uaw=0&ul=en-us&_s=1&tag_exp=0~115616985~115938466~115938468~116363097~118128922~118463262&dl=https%3A%2F%2Fhttp3check.net%2F&dt=HTTP%2F3%20Check&sid=1778162899&sct=1&seg=0&_tu=wAQ&en=page_view&_fv=1&_ss=1&_ee=1&gap.uat=0~115938466~115938469~116363097~118463261&tfd=532 — 204 — 20 B — 20 ms — h3https://http3check.net/static/favicon-32x32.png/static/favicon-32x32.png https://http3check.net/static/favicon-32x32.png — 200 — 2.0 KiB — 5 ms — h3
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
96% of JavaScript execution is third-party
First-party Third-party 1368ms · 478KB · $18/mo
cdnjs
CDN
Costly
Execution 303ms
Transfer 36 KB
Unused 64%
Monthly Cost $4/mo
Google Tag Manager
Tag Manager
Costly
Execution 276ms
Transfer 145 KB
Unused 44%
Monthly Cost $4/mo
Google Tag Manager
Tag Manager
Costly
Execution 275ms
Transfer 150 KB
Unused 43%
Monthly Cost $4/mo
Unattributable
Other
Costly
Execution 254ms
Transfer 0 KB
Monthly Cost $3/mo
Google Tag Manager
Tag Manager
Optional
Execution 193ms
Transfer 125 KB
Unused 50%
Monthly Cost $3/mo
Google Analytics
Analytics
Optional
Execution 68ms
Transfer 21 KB
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • cdnjs adds 303ms and costs ~$4/month
  • Google Tag Manager adds 276ms and costs ~$4/month
  • Google Tag Manager adds 275ms and costs ~$4/month
  • Unattributable adds 254ms and costs ~$3/month

96% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.

Why this matters

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

cdnjs takes 303ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

64% of cdnjs's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

Google Tag Manager takes 276ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Google Tag Manager takes 275ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Unattributable takes 254ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

50% of Google Tag Manager's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

How third-party costs are calculated

Real-User Performance (CrUX)
Field metrics from the Chrome User Experience Report
INFO

Chrome User Experience (CrUX)

Real-user metrics from the Chrome UX Report (2026-04-08 — 2026-05-05)

LCP (p75)

1644 ms

84% good

INP (p75)

46 ms

99% good

CLS (p75)

0.000

100% good

FCP (p75)

1629 ms

TTFB (p75)

1468 ms

This origin passes Core Web Vitals assessment
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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