Spark Tools

Single preset · measured 3 times since 2026-09-12 · Lighthouse via PageSpeed Insights · 0–100, 90+ is good.

Mobile

Speed 48 · 52 points to gain

• −25 Largest Contentful Paint medium effort
• −10 First Contentful Paint medium effort
• −8 Speed Index medium effort
• −7.8 Cumulative Layout Shift medium effort
• −0.9 Total Blocking Time medium effort

• 4.0 s Reduce unused JavaScript high effort
• 760 ms Reduce unused CSS high effort

SEO 92 · 8 points to gain

• −7.7 Document does not have a meta description low effort

Accessibility 86 · 14 points to gain

• −3.2 `[aria-hidden="true"]` elements contain focusable descendents medium effort
• −3.2 Background and foreground colors do not have a sufficient contrast ratio. medium effort
• −3.2 Links do not have a discernible name medium effort
• −3.2 Touch targets do not have sufficient size or spacing. medium effort
• −1.4 Heading elements are not in a sequentially-descending order medium effort

Best practices 92 · 8 points to gain

• −3.8 Serves images with low resolution low effort
• −3.8 Browser errors were logged to the console medium effort

Desktop

Speed 96 · 4 points to gain

• −3 Total Blocking Time medium effort
• −0.5 Largest Contentful Paint medium effort

SEO 92 · 8 points to gain

• −7.7 Document does not have a meta description low effort

Accessibility 88 · 12 points to gain

• −2.8 `[aria-hidden="true"]` elements contain focusable descendents medium effort
• −2.8 ARIA input fields do not have accessible names medium effort
• −2.8 Background and foreground colors do not have a sufficient contrast ratio. medium effort
• −2.8 Links do not have a discernible name medium effort
• −1.2 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