PDF Metadata Viewer/Editor
View and edit basic PDF metadata locally.
Checking PDF support…
PDF Metadata Viewer/Editor lets you inspect and update basic Info fields—title, author, subject, keywords, creator, and producer—entirely in your browser. Encrypted PDFs fail clearly; nothing is uploaded.
How it works
Open a local PDF to load metadata via a worker-backed inspect. Edit the fields, then Save metadata to write changes with pdf-lib and download a new file. Password-protected documents are rejected before any edits.
Benefits
- View and edit core Info dictionary fields
- Explicit encrypted-PDF failure modes
- Local worker processing with size guards
- Download an updated PDF without uploads
Use cases
- Fix missing titles before sharing reports
- Add author and keywords for archival
- Strip leftover producer strings from exports
- Quickly inspect mystery PDF properties
Best practices
- Keep titles short and human-readable
- Verify properties in a desktop reader after download
- Do not open untrusted encrypted files expecting a bypass
- Retain originals when metadata is compliance-sensitive
Common mistakes
- Assuming all viewers display every field
- Expecting password prompts for encrypted PDFs
- Editing huge scans beyond the 50 MB / 500 page caps
- Forgetting to download after Save metadata
Privacy
Metadata read/write stays on your device using pdf-lib workers. ToolHub never receives the PDF. Clear downloads on shared computers when finished.
Frequently asked questions
- Does PDF Metadata upload my document?
- No. Metadata is read and written locally with pdf-lib in a Web Worker when available. Your file never leaves the browser.
- Which fields can I edit?
- Title, author, subject, keywords, creator, and producer. Keywords can be comma-separated. Other advanced XMP properties are not edited in this basic tool.
- What happens with encrypted PDFs?
- Encrypted or password-protected PDFs fail immediately with a clear message. ToolHub does not prompt for passwords and will not ignore encryption to peek at metadata.
- Will viewers show my new metadata?
- Most desktop PDF readers show Title and Author in Document Properties. Some web viewers ignore producer/creator. Always reopen the downloaded file to confirm.
- Are there file size limits?
- Yes. PDFs are limited to 50 MB and 500 pages. Limits appear under the file picker, especially to protect low-memory mobile browsers.
- Can metadata edits break the PDF?
- Edits update standard Info dictionary fields and save a new PDF. Visual page content is not altered. Keep a copy of the original if you need an untouched master.