Does clearing metadata fully anonymize the PDF?

**Mostly, but not entirely**. The Info dictionary is cleared. But content streams may still carry your name (a signature you typed, a logo, a watermark you forgot). The **PDF structure itself** also has fingerprints: object ordering, compression choices, font subset names. For absolute anonymization the standard approach is to **rasterize every page to an image and rebuild a fresh PDF** - destroying text selection but also destroying every metadata trace.

What happens to the file if I leave a field blank?

pdf-lib **removes** that field from the Info dictionary. So if you blank Author and Creator, the output PDF will not have those fields at all - viewers show them as empty or "Unknown". This is generally what you want for privacy. If you wrote `""` or whitespace, it is treated the same as blank.

Can I set future or past dates?

**Yes**. The date pickers accept any value pdf-lib can parse. Useful for backdating drafts to match a project timeline, normalizing dates across a batch ("all files dated 2026-01-01"), or removing creation time entirely. Note: viewers typically display dates in local timezone so a 2026-01-01 00:00 UTC date may look like 2025-12-31 in the US.

Why are the Creator and Producer fields different?

**Creator** is the originating application - Microsoft Word, Adobe InDesign, Google Docs. **Producer** is the library that actually wrote the bytes - usually a PDF library deep inside the app (Adobe PDF Library, Skia/PDFium for Chrome, iText, GhostScript). Removing Creator hides "what you used to make it"; removing Producer hides "what library produced the file". For full privacy, clear both.

Are content-level traces also removed (text from previous edits, embedded thumbnails)?

**No**. This tool only edits the Info dictionary. If your PDF contains embedded thumbnails of pages, deleted comments, or revision history (e.g. PDFs from Acrobat with "Save As" rather than full export), those stay. To purge them, run the file through Adobe Acrobat's **Sanitize Document** feature or a dedicated PDF redaction tool first.

Does the keyword field accept multiple keywords?

**Yes**. Type them comma-separated: `tax, 2025, q4, return`. The PDF stores them as a single string and viewers split them visually. There is no length limit beyond practical sense - most viewers truncate display around 200 characters.

Will my edits affect XMP metadata too?

**No, in v1 we edit only the Info dictionary**. Most PDFs have both: an Info dict with the legacy fields and an XMP packet (RDF/XML) with the extended ones. Some readers prefer the XMP version. For full privacy you would want to clear XMP too; this is on our roadmap and means embedding an empty XMP packet, which pdf-lib can do via setMetadata but with caveats.

Does this work with password-protected PDFs?

**No**. pdf-lib refuses to load encrypted PDFs. Decrypt the file first (open in Adobe Reader, enter the password, Save a copy as unprotected) and then run that through this tool.

Is the original PDF changed?

**No**. We load the file into memory, build a new PDF with the metadata you chose, and let you download it. The file you dropped in is untouched on disk. Nothing is sent to a server, nothing is cached.

PDF metadata editor - free

What PDF metadata is and why it leaks

Every PDF carries an Info dictionary plus creation and modification dates. Word, Acrobat, Chrome, and "Print to PDF" drivers all stamp these fields automatically - usually with your full name from the OS user profile, the machine's software ("Microsoft Word for Microsoft 365"), and the exact creation timestamp. Most people never see these fields and never strip them before sending the document.

This tool drops a PDF in, shows you every metadata field, and lets you edit or wipe each one. You can rename "John Smith - acme-corp-laptop" to a clean "Anonymous", clear the creation date, set a custom title for SEO, or strip everything to a blank slate. Then you download a new PDF with only the metadata you chose. Runs 100% in your browser with pdf-lib - the original file never leaves your device.

How to use it

Drop a PDF onto the upload area or click to pick one from disk. The file stays in your browser.
See every metadata field the PDF carries: Title, Author, Subject, Keywords, Creator, Producer, plus creation and modification dates.
Edit any field by typing in it. Leave it blank to strip that field entirely from the output.
Use Clear all to wipe every editable field at once - handy before sharing a document publicly.
Press Apply to build the new PDF, then Download it. The original is untouched.
For sensitive workflows (lawyers, journalists, whistleblowers), pair this with the PDF Text Extractor and verify the new file shows no traces of your identity.

When this is useful

Six everyday reasons to edit or strip PDF metadata:

Personal privacy before sharing: a PDF you produce shows your real name in the Author field by default. Stripping it before posting to a forum, Reddit, or a public file share keeps your identity private.
Source-protection for journalists and whistleblowers: a leaked document carries traces of the device it was created on. A clean Author and Producer makes attribution harder.
SEO and accessibility: search engines index the Title and Subject fields. A descriptive title beats "Document1.docx" in Google's preview.
Brand consistency: client deliverables should say "Acme Studio - Q1 Report" rather than "John's Laptop - Untitled".
Compliance and audit trails: regulated industries (legal, medical, finance) sometimes require specific metadata patterns. This is a fast way to set them.
Fixing wrong defaults: a PDF carrying "Microsoft Word 2019" as the Creator looks unprofessional when your firm sells "AI-first content workflows". Clear or rewrite.

Companion tools: PDF text extractor, PDF page numbers, PDF watermark.

Questions and answers

The standard fields are Title, Author, Subject, Keywords, Creator (the app that created the document), Producer (the library that wrote the PDF), CreationDate, and ModificationDate. Beyond that, some PDFs embed an XMP packet with extended metadata (camera info, GPS coordinates if the PDF was built from photos, color profile details, custom XML schemas). In v1 we edit the standard Info dictionary; an XMP editor is on the roadmap.

What PDF metadata is and why it leaks

How to use it

Drop a PDF onto the upload area or click to pick one from disk. The file stays in your browser.

See every metadata field the PDF carries: Title, Author, Subject, Keywords, Creator, Producer, plus creation and modification dates.

Edit any field by typing in it. Leave it blank to strip that field entirely from the output.

Use Clear all to wipe every editable field at once - handy before sharing a document publicly.

Press Apply to build the new PDF, then Download it. The original is untouched.

For sensitive workflows (lawyers, journalists, whistleblowers), pair this with the PDF Text Extractor and verify the new file shows no traces of your identity.

When this is useful

Six everyday reasons to edit or strip PDF metadata:

Personal privacy before sharing: a PDF you produce shows your real name in the Author field by default. Stripping it before posting to a forum, Reddit, or a public file share keeps your identity private.
Source-protection for journalists and whistleblowers: a leaked document carries traces of the device it was created on. A clean Author and Producer makes attribution harder.
SEO and accessibility: search engines index the Title and Subject fields. A descriptive title beats "Document1.docx" in Google's preview.
Brand consistency: client deliverables should say "Acme Studio - Q1 Report" rather than "John's Laptop - Untitled".
Compliance and audit trails: regulated industries (legal, medical, finance) sometimes require specific metadata patterns. This is a fast way to set them.
Fixing wrong defaults: a PDF carrying "Microsoft Word 2019" as the Creator looks unprofessional when your firm sells "AI-first content workflows". Clear or rewrite.

Companion tools: PDF text extractor, PDF page numbers, PDF watermark.

Questions and answers

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