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Check WCAG color contrast ratios between any two colors
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Real-user INP and Core Web Vitals from Google's Chrome UX Report.
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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.
1.11 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
3.62 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
1.72 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.020
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
3.94 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.
9.88 s
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%+.
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.
Downloaded but never executed on this page.
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
~699.9 KiB of savings available
Set explicit width and height to prevent CLS.
Performance issues directly impact user engagement and conversion rates.
No green hosting detected
Web fonts
17
937 KB total
Render-blocking
0
of 17
Dominant font-display
swap
Most common across fonts
Fixing the unchecked items could save ~45 KB and ~90 ms
public,max-age=604800,stale-while-revalidate=3600,stale-if-error=3600
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877 ms
2.6 s
3.5 s
4.4 s
5.3 s
6.1 s
7.0 s