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Common questions about BeaverCheck scores and checks
How we calculate scores across 100+ checks
The story behind BeaverCheck and the team
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Check WCAG color contrast ratios between any two colors
Inspect HTTP response headers for any URL
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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.
1.69 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
0 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.003
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
2.22 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.
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
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
Set explicit width and height to prevent CLS.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
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
No green hosting detected
Main Thread Breakdown
Web fonts
6
302 KB total
Render-blocking
0
of 6
Dominant font-display
swap
Most common across fonts
Fixing the unchecked items could save ~63 KB and ~126 ms
~83.9 KiB of savings available
How third-party costs are calculated
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636 ms
2.5 s
3.2 s
5.1 s