WCAG 2.1 Contrast Ratio Checker & Palette Exporter

Open-source client-side utility hosted on sofiacloud-ui.ggff.net. All formatting, schema validation and checksum calculations run 100% locally in your browser with zero server retention.

Input Payload (JSON / Raw Text)

Validated Output & Diagnostics

Ready. Click "Format & Validate" to inspect payload structure.

100% Client-Side Privacy

Payloads never leave your browser session. Ideal for debugging configuration files, webhooks and REST API responses safely.

RFC 8259 Compliant

Strict syntax validation with exact line and character diagnostics for rapid developer troubleshooting.

Open Documentation

Maintained as an independent developer micro-tool on sofiacloud-ui.ggff.net. Licensed under MIT Open Source License.