About this tool
See Everything Hidden Inside Your PDF
Every PDF carries metadata you never see: the author name (often your OS username), the software that created it, creation and modification timestamps, a document ID fingerprint, digital signatures, and an embedded XMP metadata stream. Drop any PDF here to read it all instantly, locally, without uploading a single byte.
Why use OmegaPix
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Find the author : The Author field often contains the OS username of whoever saved the file, a common privacy leak.
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Software fingerprint : See whether the PDF was created in Microsoft Word, Adobe Acrobat, Google Docs, LibreOffice, or macOS Quartz.
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Spot modifications : More than one EOF marker means the file was modified after its original creation, a useful forensic signal.
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Digital signatures : Detect whether the document has been signed with cryptographic signature fields.
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Full XMP stream : Read dc:creator, dc:title, xmp:CreatorTool and other XMP fields embedded in the document catalog.
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100% local : All reading runs in your browser via pdf-lib. Your file never reaches any server.
How it works
Drop your PDF
Drag and drop or click to choose any PDF file from your device.
Instant read
Metadata is extracted in your browser using pdf-lib. No upload, no wait.
Review the details
See all metadata groups: document info, software, dates, structure, and XMP stream.
Frequently asked questions
What metadata can a PDF contain?
PDFs have two main metadata layers. The Document Information Dictionary holds Title, Author, Subject, Keywords, Creator (the app that made the source document), Producer (the app that output the PDF), CreationDate, and ModificationDate. The XMP metadata stream is a modern RDF/XML block that can contain the same fields plus edit history, rights statements, and software version details.
What is the Author field in a PDF?
The Author field is typically populated automatically from the operating system username of whoever saved the file. On Windows it is the Windows account name; on macOS it is the account full name. This is a common privacy leak when sharing PDFs externally.
What does "incremental updates" mean?
PDF allows appending changes to the end of a file without rewriting the whole document. Each revision ends with an EOF marker. A file with more than one EOF marker was modified after its initial creation. This can be a useful signal in document forensics.
Can I strip the metadata after viewing it?
Yes. Use the PDF Metadata Remover tool, linked from the viewer sidebar, to remove Author, Title, Subject, Keywords, Creator, Producer, timestamps, XMP stream, and Document ID from your PDF without touching the page content.
Does this tool upload my PDF?
No. All reading runs locally in your browser using the pdf-lib library compiled to WebAssembly. Your file never reaches any server. You can verify this by opening DevTools and checking the Network tab while using the tool.
What are digital signatures in a PDF?
Digital signatures are cryptographic seals embedded in the PDF form layer as Sig-type fields. They prove the document has not been altered since it was signed. This viewer detects whether signature fields are present; it does not validate the signatures.
Your files stay on your device
All metadata reading runs entirely in your browser via pdf-lib. Your PDF is parsed locally and never transmitted to any server. For confidential contracts, legal documents, or sensitive records, this is the safe way to inspect PDF metadata.