| What it does | Free browser-based C2PA Content Credentials checker and provenance viewer
| HTML validation API and free online validator for deployed pages
|
|---|
| Stage | Not given
| Not given
|
|---|
| Founded | Not given
| Not given
|
|---|
| Based in | Not given
| FR
|
|---|
| Pricing model | Free
| Freemium
|
|---|
| Pricing | Not given
| Free: unlimited validators and checkers, no account required, free site scans. Solo: 49 EUR per month including full site reports and monitoring of 1 site. Agency: 149 EUR per month including monitoring of 10 sites. Automatic fixes: from 3 EUR for 10 pages, 1 free fix daily without account. Full sit
|
|---|
| Key features | - C2PA Manifest Viewer - inspect manifest store, claim, assertions, ingredients and raw JSON
- C2PA Metadata Inspector - read signer, source disclosure, counts, identifiers and checksum in structured table
- C2PA URL Checker - inspect remote image, video, audio or PDF provenance from public URL
- C2PA PDF Checker - check Content Credentials in PDF files and review signature validation evidence
- Local browser inspection via WebAssembly - no file uploads
- Supports JPEG, PNG, WebP, AVIF, HEIC, HEIF, SVG, MP4, MOV, MP3, WAV and PDF files up to 200 MB
- Cryptographic verification state with signer and issuer information
- Provenance timeline with recorded actions and ingredient references
| - Accessibility (WCAG) validation with machine-detectable failures
- HTML specification compliance checking
- Meta tags and viewport validation
- Open Graph checker
- Page weight measurement and compression analysis
- Single API endpoint with configurable checks
- Single verdict field for build pipeline integration
- Automatic AI-powered HTML fixes
- Weekly site audits with change notifications
- GitHub Actions integration
|
|---|
| What makes it different | - Files never leave your device - all inspection runs locally in your browser
- Independent tool not affiliated with or endorsed by the Coalition for Content Provenance and Authenticity
- Reports evidence not verdicts - no authenticity percentages or false claims
- Multiple inspection views for different user needs and expertise levels
- Privacy-focused with non-sensitive usage metrics only via Google Analytics
| - One API call runs five checks on a single page fetch instead of five separate requests
- Single boolean verdict for build pipelines to act on without parsing prose
- False-positive filtering eliminates unreliable findings
- Quality score based on issue variety, not count, capping best-practice impact
- Free tools remain unlimited without account or daily limits
|
|---|
| Free plan | Not given
| Not given
|
|---|
| Open source | Not given
| Not given
|
|---|
| Platforms | Not given
| Not given
|
|---|
| Public API | Not given
| Not given
|
|---|
| Community votes | 0 | 0 |
|---|
| DR (Domain Rating by Ahrefs) | 1 ● no change since last check | 9 ● no change since last check |
|---|
| Trust Flow (Majestic) | 2 | 10 |
|---|
| Citation Flow (Majestic) | 26 | 32 |
|---|
| Referring domains (Majestic) | 16 | 124 |
|---|
C2PA Lab
ValidateHTML