PDF Metadata Viewer
View and edit PDF metadata: title, author, subject, and more.
Drop a PDF here or click to browse
PDF only ยท Single file
How to view and edit PDF document properties and metadata free online
Every PDF file contains a metadata dictionary that stores document properties such as the title, author, subject, keywords, and creation date. This information is embedded by the application that created the PDF and is often not visible when you simply open the file in a reader. AlteredIdea's PDF metadata viewer exposes all these fields and lets you inspect or update them without any server uploads.
Editing PDF metadata is useful in several scenarios: correcting an incorrect author name before sharing a document, adding keywords to improve searchability, removing personally identifiable information for privacy, or updating a title to match a document's current version. The tool uses pdf-lib to read and write metadata entirely within your browser, and the updated PDF is saved to your device with no cloud involvement.
Step-by-step guide
- 1Upload your PDF
Drop your PDF onto the upload zone or click to browse. The tool reads the document metadata immediately without rendering the full PDF. - 2Inspect the metadata fields
All standard PDF document properties are displayed: title, author, subject, keywords, creator application, producer, creation date, and modification date. - 3Edit any field
Click on any metadata field to edit its value. You can update the title, author, subject, and keywords, or clear fields you want to remove. - 4Remove sensitive information
Clear author names, organization details, or creation timestamps to anonymize a document before sharing it publicly. - 5Save the updated PDF
Click Save to write the updated metadata back into the PDF and download the modified file. The original file on your device is not changed.
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Frequently Asked Questions
- What metadata fields does PDF contain?
- Standard PDF metadata includes Title, Author, Subject, Keywords, Creator (the application that created the original document), Producer (the PDF-writing library), CreationDate, and ModDate. Some PDFs also contain custom XMP metadata.
- Is my PDF uploaded when viewing its metadata?
- No. pdf-lib reads the metadata entirely within your browser. The file never leaves your device and no data is transmitted to any server.
- Can I remove the author name from a PDF?
- Yes. Simply clear the Author field and save the PDF. The downloaded file will have an empty author property, which can be useful for anonymizing documents before sharing.
- Why might the creation date be wrong?
- PDF creation dates reflect when the PDF file was generated, not when the original content was written. If the PDF was converted from another format the date may reflect the conversion time rather than the original document's creation.
- Can I add keywords to make the PDF easier to find?
- Yes. The Keywords field accepts a comma-separated list of terms. Adding descriptive keywords helps desktop search tools and some PDF management applications index and find the document.
- Will editing metadata change the PDF content?
- No. Metadata is stored separately from the page content. Updating title, author, or other properties has no effect on the text, images, or layout of the pages.
- What is the difference between Creator and Producer?
- Creator identifies the application that originally authored the document (e.g. Microsoft Word). Producer identifies the library or tool that wrote the PDF file (e.g. a PDF export library). Both fields can be edited.
- Can I view XMP metadata?
- Standard document information dictionary fields (Title, Author, Subject, Keywords, Creator, Producer, dates) are shown. Extended XMP metadata streams, which some PDFs use for rights management or additional properties, may not be fully displayed.
- Is there a way to bulk-edit metadata for multiple PDFs?
- This tool processes one PDF at a time. For bulk metadata editing across many files, consider using a desktop tool or scripting solution that can process multiple files programmatically.
AlteredIdea vs alternatives
vs Adobe Acrobat: Free, no subscription needed, works entirely in your browser.
vs iLovePDF / SmallPDF: No file uploads to servers: your PDFs never leave your device.
vs desktop software: No install required. Works on any device with a browser.