Alchemy

Median of 3 presets · measured 18 times since 2026-09-11 · Lighthouse via PageSpeed Insights · 0–100, 90+ is good.

Mobile

Speed 78 · 22 points to gain

• −17.8 Largest Contentful Paint medium effort
• −2.5 Cumulative Layout Shift medium effort
• −1.1 First Contentful Paint medium effort
• −1 Speed Index medium effort

• 300 ms Reduce unused JavaScript 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 89 · 11 points to gain

• −4.6 Image elements do not have `[alt]` attributes low 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

Best practices 96 · 4 points to gain

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

Desktop

Speed 88 · 12 points to gain

• −7.8 Cumulative Layout Shift medium effort
• −2.7 Largest Contentful Paint medium effort
• −1.6 Speed Index 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 92 · 8 points to gain

• −4.6 Image elements do not have `[alt]` attributes low effort
• −3.2 Links do not have a discernible name medium effort

Best practices 96 · 4 points to gain

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