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The PDF Metadata Editor shows you the hidden properties stored inside a PDF - title, author, subject, keywords, creator - and lets you edit them before downloading an updated file. Every PDF carries this invisible data, and most people never look at it.
How to use: 1) Upload your PDF - its current metadata appears in editable fields. 2) Change the title, author, subject, keywords or creator app. 3) Click Update & Download.
Why edit PDF metadata? Metadata is how the world identifies your document: search engines use the title and keywords when indexing PDFs, ebook readers display the author, and a proper title looks professional in browser tabs instead of "document_final_v2.pdf". Fixing metadata also removes traces of old software or previous authors before you share a file publicly.
Private by design: Reading and rewriting metadata happens fully in your browser with pdf-lib - nothing is uploaded, so the very data you are cleaning stays on your device.
FAQs: What is PDF metadata? Invisible properties like title, author, subject, keywords, creator application and page count stored in the file header. Does it change the visible content? No - only the hidden properties are rewritten. Why do my PDFs have the wrong author? Export tools fill these fields automatically from the computer or software that created them; this tool lets you correct them.
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