Keystone

Median of 5 presets · measured 30 times since 2026-09-11 · Lighthouse via PageSpeed Insights · 0–100, 90+ is good.

Mobile

Speed 64 · 36 points to gain

• −19 Largest Contentful Paint medium effort
• −13.2 Total Blocking Time medium effort
• −2.8 Speed Index medium effort
• −1.2 First Contentful Paint medium effort

• 150 ms Reduce unused JavaScript high effort

SEO 92 · 8 points to gain

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

Accessibility 90 · 10 points to gain

• −4.9 Image elements do not have `[alt]` attributes low effort
• −3.4 Background and foreground colors do not have a sufficient contrast ratio. medium effort
• −1.5 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

Desktop

Speed 55 · 45 points to gain

• −29.7 Total Blocking Time medium effort
• −13.3 Largest Contentful Paint medium effort
• −2.1 Speed Index medium effort

SEO 92 · 8 points to gain

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

Accessibility 85 · 15 points to gain

• −4.9 Elements with an ARIA `[role]` that require children to contain a specific `[role]` are missing some or all of those required children. medium effort
• −4.9 Image elements do not have `[alt]` attributes low effort
• −3.4 Background and foreground colors do not have a sufficient contrast ratio. medium effort
• −1.5 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