Best Free Online Developer Tools to Use in 2026
A practical, opinionated list of the best free online developer tools worth using in 2026, organized by category so you can find what you need fast.
Aug 08, 2026
PDF Metadata Editor
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- Utility
- PDF Metadata Editor
View and edit PDF document metadata directly in your browser. Your files never leave your device.
Drop PDF file here
or click to browse
Maximum file size: 50MB
What is PDF Metadata?
PDF metadata is the information stored inside a PDF file that describes the document — such as title, author, subject, and keywords. This metadata helps with document organization, search engine indexing, and accessibility. Some metadata fields like Producer and Creator are automatically set by the software used to create the PDF.
This tool runs entirely in your browser using the pdf-lib library. Your files never leave your device.
How to Use This PDF Metadata Editor
- Upload your PDF — Drag and drop a PDF file onto the drop zone, or click to browse and select a file (max 50MB).
- View current metadata — The existing metadata fields (title, author, subject, keywords) are loaded into editable fields. Producer and Creator are displayed as read-only.
- Edit fields — Modify the title, author, subject, and keywords as needed. Keywords should be comma-separated.
- Download the result — Click Save Metadata & Download to apply the changes and download the updated PDF.
Frequently Asked Questions
Is this PDF metadata editor safe?
Yes. All processing happens in your browser using JavaScript. Your PDF file is never uploaded to any server, stored, or logged.
What metadata fields can I edit?
You can edit Title, Author, Subject, and Keywords. The Producer and Creator fields are read-only as they reflect the software used to create the PDF.
Will editing metadata change the PDF content?
No. Only the document metadata is modified. The actual content, layout, images, and formatting of your PDF remain unchanged.
Does this work with encrypted PDFs?
The tool attempts to load PDFs with ignoreEncryption enabled. Password-protected PDFs cannot be processed.
Last updated: 17 Aug 2026
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