Metadata Guides

Step-by-step references for metadata verification, AI image evidence, and PDF metadata structure. Each guide documents what the tools can and cannot do.

Three-layer verification

Confirm metadata removal with the built-in re-scan, an ExifTool cross-check, and file sanity checks. Learn which remaining fields are structural, why file size proves nothing, and when to use an independent reader.

AI image metadata boundaries

See what ComfyUI, AUTOMATIC1111, and InvokeAI may embed, where C2PA fits, and what lives beyond metadata containers. The guide separates real-file evidence from format-level test coverage.

PDF Info vs XMP metadata

Learn how Info dictionaries and catalog XMP differ, what the qpdf rewrite covers, and where digital signatures and PDF sanitization set the boundary.

How these guides are written

The product's current format matrix and repeatable tests set the claims. Unsupported fields, unverified provenance, and out-of-scope signals remain visible boundaries rather than being folded into a universal success message.

Start with the local metadata tools, or review the public test evidence.