| Key features | - Browse HDF5 groups, datasets and attributes
- Read Parquet schemas, row groups and column statistics
- Open Zarr v2 and v3 stores from a folder or a zip
- Inspect Apache Arrow and Feather files
- View CSV, TSV and Excel spreadsheets
- Load NumPy .npy and .npz arrays
- List safetensors tensors and step through TFRecord records
- Slice N-dimensional arrays and render heatmaps
- Parse every file locally, with no upload
- Work offline after page loads
| - 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
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| What makes it different | - All data processing happens in your browser with no server uploads
- Opens very large files by reading only the bytes you view
- No installation, account or login required
- Comprehensive articles explaining data format specifications
| - 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
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ViewKit
C2PA Lab