Accessibility
Built-in accessibility checks, WCAG-aware out of the box
Koo audits every page for colour contrast, alt text, heading order and ARIA, then fixes most issues automatically before you publish.
Contrast and colour
Detects insufficient contrast and proposes WCAG-compliant alternatives.
Alt text everywhere
Generates descriptive alt text for every image automatically.
Semantic structure
Validates heading order and landmark roles, which matters for screen readers.
Auto-fix for most issues
One-click resolution for the most common accessibility problems.
In one sentence
Koo audits every page for colour contrast, alt text, heading order and ARIA, then fixes most issues automatically before you publish.
How it works
From signup to results in three steps
01
Koo scans every page
It runs a full accessibility audit on publish and on every edit.
02
Fixes most issues automatically
Alt text, contrast and heading order, all applied with one click.
03
See what's left
A clear report of any remaining issues, with how to fix each one.
Why it matters
Built for compounding growth
WCAG 2.1
Aware audit
Auto
Alt text generation
1-click
Fix most issues
FAQ
Common questions
Keep exploring