Carbon

Median of 2 presets · measured 12 times since 2026-09-11 · Lighthouse via PageSpeed Insights · 0–100, 90+ is good.

Mobile

Speed 83 · 17 points to gain

• −14.5 Largest Contentful Paint medium effort
• −1.6 First Contentful Paint medium effort
• −1.1 Speed Index medium effort

SEO 92 · 8 points to gain

• −7.7 Image elements do not have `[alt]` attributes low effort

Accessibility 89 · 11 points to gain

• −4.5 Image elements do not have `[alt]` attributes low effort
• −3.1 Elements with `role="dialog"` or `role="alertdialog"` do not have accessible names. medium effort
• −3.1 Background and foreground colors do not have a sufficient contrast ratio. medium effort

Best practices 92 · 8 points to gain

• −3.8 Browser errors were logged to the console medium effort
• −3.8 Issues were logged in the `Issues` panel in Chrome Devtools high effort

Desktop

Speed 98 · 2 points to gain

• −1 Largest Contentful Paint medium effort
• −0.9 Speed Index medium effort

SEO 92 · 8 points to gain

• −7.7 Image elements do not have `[alt]` attributes low effort

Accessibility 87 · 13 points to gain

• −4.5 Elements with an ARIA `[role]` that require children to contain a specific `[role]` are missing some or all of those required children. medium effort
• −4.5 Image elements do not have `[alt]` attributes low effort
• −3.1 Elements with `role="dialog"` or `role="alertdialog"` do not have accessible names. medium effort
• −1.3 Heading elements are not in a sequentially-descending order medium effort

Best practices 96 · 4 points to gain

• −3.8 Browser errors were logged to the console medium effort