Impact

Median of 3 presets · measured 162 times since 2026-10-02 · Lighthouse via PageSpeed Insights · 0–100, 90+ is good.

Mobile

Speed 75 · 25 points to gain

• −25 Largest Contentful Paint medium effort

• 300 ms Reduce unused JavaScript high effort
• 150 ms Reduce unused CSS high effort

SEO 54 · 46 points to gain

• −31 Page is blocked from indexing low effort
• −7.7 Links do not have descriptive text low effort
• −7.7 Image elements do not have `[alt]` attributes low effort

Accessibility 81 · 19 points to gain

• −4.5 Image elements do not have `[alt]` attributes low effort
• −4.5 `[user-scalable="no"]` is used in the `<meta name="viewport">` element or the `[maximum-scale]` attribute is less than 5. low effort
• −3.2 Elements with `role="dialog"` or `role="alertdialog"` do not have accessible names. medium effort
• −3.2 Background and foreground colors do not have a sufficient contrast ratio. medium effort
• −3.2 Touch targets do not have sufficient size or spacing. medium effort

Best practices 96 · 4 points to gain

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

Desktop

Speed 87 · 13 points to gain

• −8.4 Speed Index medium effort
• −4.3 Largest Contentful Paint medium effort

SEO 54 · 46 points to gain

• −31 Page is blocked from indexing low effort
• −7.7 Links do not have descriptive text low effort
• −7.7 Image elements do not have `[alt]` attributes low effort

Accessibility 81 · 19 points to gain

• −4.5 Image elements do not have `[alt]` attributes low effort
• −4.5 `[user-scalable="no"]` is used in the `<meta name="viewport">` element or the `[maximum-scale]` attribute is less than 5. low effort
• −3.2 Elements with `role="dialog"` or `role="alertdialog"` do not have accessible names. medium effort
• −3.2 Background and foreground colors do not have a sufficient contrast ratio. medium effort
• −3.2 Touch targets do not have sufficient size or spacing. medium effort

Best practices 96 · 4 points to gain

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