Check if a PDF was edited

No, this tool provides indicators and signals, not forensic proof. We analyze metadata and structural patterns that may suggest modifications, but this is not a legal verdict. Multiple factors can affect these signals.

Some PDF creation tools don't set modification dates properly. Additionally, some software may strip or modify dates during processing. A missing ModDate doesn't necessarily indicate tampering.

Yes. When you open and save a PDF in different software (like Adobe Acrobat, Preview, or online tools), the Producer and Creator metadata typically change to reflect the new software used.

Digital signatures and document modifications are complex topics. While signatures can indicate authenticity, the relationship between signatures and subsequent changes depends on the signature type and certification level.

Files are temporarily stored for processing in private storage and on the processing server. During normal operation, document copies are automatically deleted within five minutes after processing finishes. Download needed results promptly; there is no long-term document storage.

PDFs can be saved incrementally, appending new data without rewriting the entire file. Multiple incremental updates (multiple EOF markers) may indicate the document was edited multiple times.

XMP (Extensible Metadata Platform) is an additional metadata format stored within PDFs. It can contain information about the document's creation, editing history, and software used.

The score summarizes observed metadata and structural indicators. It is not a calibrated probability of fraud, and a low score does not establish that a document is original or authentic.