About Document Metadata Inspector
The Document Metadata Inspector reads the metadata already embedded inside a file rather than analyzing the visible content: PDF properties, Word document editing history, and image provenance tags. Upload a PDF, DOCX, PNG, or JPG file up to 10MB and the tool extracts and displays whatever metadata the file actually contains - nothing is guessed or inferred from the visible content.
For PDFs, the tool reads the Producer and Creator application fields, creation and modification dates, and any XMP metadata. For Word documents (.docx), it reads editing-session forensics stored inside the file format itself: RSID (revision save ID) values that indicate how many distinct editing sessions produced the document, the presence of tracked changes or comments, and the core.xml properties recording author, last-modified-by, and revision count. For images, it checks three separate signal sources: EXIF metadata (which can include a Software or Make tag left by tools like Midjourney), PNG text chunks (Stable Diffusion and tools such as Automatic1111 commonly embed a full generation prompt and parameters in a tEXt or iTXt chunk), and an optional C2PA Content Credentials check, an open standard several AI image generators and camera makers use to attach a tamper-evident record of how an image was created or edited.
Metadata can be a strong signal or no signal at all, and the tool shows both honestly. An embedded Stable Diffusion prompt or a Midjourney software tag is a reasonably strong indicator because those tools embed it automatically and it rarely appears by accident. But the complete absence of any metadata proves nothing: screenshots, re-saves, exports through Google Docs or a school's learning management system, messaging apps, and many editing tools routinely strip metadata as a side effect. Treat a clean, metadata-free result as inconclusive, never as confirmation of human authorship.
This is a metadata reader, not a full forensic document examiner, and results should never be the sole basis for an academic, employment, or legal decision. Everything happens locally in your browser - your file is never uploaded to a server, and nothing is stored once you close the tab.