PDF Metadata Editor
Inspect, edit, or sanitize standard PDF properties like Title, Author, Subject, Keywords, and Producer directly in your browser with zero server uploads.
Drag & drop PDF to edit metadata
Select or drop a PDF to inspect and update document properties locally.
Client-Side PDF Metadata Inspection and Editing
The PDF Metadata Editor provides direct control over the standard document information dictionary embedded inside PDF files. You can inspect existing properties, update document titles and author attribution, configure comma-separated keyword tags for search indexers, or scrub all six standard metadata fields prior to distributing documents externally.
PDF documents store bibliographic and authoring properties inside an internal `/Info` dictionary containing six standard ISO 32000-1 keys: `/Title`, `/Author`, `/Subject`, `/Keywords`, `/Creator`, and `/Producer`, alongside creation and modification timestamps. This utility parses and updates those dictionary entries directly in client memory and re-serializes the PDF using compressed object streams without re-encoding page content, fonts, or vector graphics.
The workspace pairs a six-field interactive editor with a live Metadata Comparison: Before vs Target verification table. You can track how many of the 6 fields have pending updates, revert individual fields to their original values, or click Wipe All (Anonymize) to clear author names and authoring software signatures in one step.
Core Tool Capabilities
- Six-Field ISO 32000 Dictionary Editor: Inspects and edits all six standard PDF document information attributes: Document Title (`/Title`), Author (`/Author`), Subject (`/Subject`), Keywords (`/Keywords`), Application / Creator (`/Creator`), and PDF Producer (`/Producer`). Each field displays an Original or Modified badge with a one-click Revert action.
- One-Click Wipe All (Anonymize): Clears all six editable metadata fields simultaneously when you click the Wipe All (Anonymize) button in the toolbar. Scrubbing hidden author identifiers, employee usernames, and software producer strings helps prevent inadvertent metadata disclosures when sharing files publicly.
- Before vs Target Diff Table: Displays a live side-by-side comparison table mapping every dictionary key from its Original Value to its Target Value with Updated or Unchanged status badges. You can verify every pending property modification before writing changes to the output PDF.
- Timestamp & Security Status Inspection: Reads and displays the document's embedded Creation Date, Modification Date status, and encryption state below the editor grid. Saving updated metadata automatically refreshes the `/ModDate` timestamp to the current time and re-reads the generated buffer to verify write integrity.
- 100% Lossless Content Stream Preservation: Updates only the document information dictionary and object streams without rasterizing or re-compressing page layouts, embedded fonts, or images. Visual page quality and selectable text remain identical to the source PDF.
- Local Browser Session Processing: Executes all PDF header validation, dictionary parsing, string serialization, and file rebuilding inside your browser's local memory. Confidential drafts, legal filings, and academic manuscripts never leave your device.
Local Browser Privacy
Your files are processed locally on your device. Files are not uploaded, transmitted, or stored on remote servers.
Once the page has loaded, you can disconnect your network connection and continue using this tool offline.
Target Use Cases
- • Double-Blind Academic Peer Review
- • Search Engine & Document Library Cataloging
- • Corporate Compliance & Pre-Release Scrubbing
- • Publisher Attribution Standardization
Technical Specifications & Platform Limits
Compatible with standard unencrypted PDF documents up to the 100 MB memory limit.
All 6 standard ISO 32000-1 document information dictionary text properties.
Displays original creation timestamp and updates modification date upon saving.
Modifies `/Info` dictionary entries with 0% page stream rasterization.
Runs in local browser memory with no file upload required.
Step-by-Step Workflow
Select a PDF Document
Drag and drop a PDF file into the dropzone, click Select PDF Document to browse your device, or click Load Sample Document to test with a pre-populated report. The engine validates the PDF structure and extracts all existing metadata properties immediately.
Edit Properties or Wipe All Fields
Modify any of the 6 standard fields (Title, Author, Subject, Keywords, Creator, or Producer) in the form grid, separating multiple keywords with commas. To clear all identifying strings at once, click Wipe All (Anonymize), or use Reset to Original to undo pending edits.
Verify Changes in the Comparison Table
Inspect the Metadata Comparison: Before vs Target table to confirm which dictionary keys are marked Updated versus Unchanged. You can click Revert on any individual field card if you want to restore a single original property.
Apply Changes and Download PDF
Click the Apply & Save button to write your updated dictionary properties into a new PDF buffer and refresh the modification timestamp. Once saved, click Download PDF to save the `-metadata.pdf` file to your device.
Practical Real-World Use Cases
Double-Blind Academic Peer Review
Researchers and journal contributors use Wipe All (Anonymize) to strip `/Author`, `/Creator`, and `/Producer` strings from PDF manuscripts before submitting to double-blind review portals. Removing author metadata prevents reviewers from seeing identity tags in PDF viewer properties.
Search Engine & Document Library Cataloging
Digital marketers and technical publishers populate descriptive `/Title`, `/Subject`, and comma-separated `/Keywords` fields on whitepapers and product guides. Search indexers and enterprise document management systems use the `/Title` entry as the primary display heading instead of a raw filename.
Corporate Compliance & Pre-Release Scrubbing
Legal and communications teams sanitize internal workstation usernames, draft subjects, and authoring software versions from regulatory filings and press releases. Inspecting the Before vs Target table provides visual confirmation that internal tags are replaced before publication.
Publisher Attribution Standardization
Operations and documentation teams standardize `/Author`, `/Creator`, and `/Producer` entries across multi-author reports and client deliverables. Uniform dictionary metadata ensures consistent organizational branding in Adobe Acrobat and desktop file inspectors.
Frequently Asked Questions
- Why does a browser tab show an old draft name instead of my PDF filename?
- Web browsers and PDF viewers display the internal `/Title` metadata property in the window title bar and tab header when one is present, ignoring the external filename on disk. Updating or clearing the Document Title (`/Title`) field in this tool fixes the title shown in browser tabs and search results.
- Does editing PDF metadata alter the visual pages, fonts, or layout?
- No. Metadata properties are stored in the document information dictionary separate from page content streams. Modifying or wiping metadata fields leaves all text layers, vector graphics, images, and page formatting completely untouched.
- How does the Wipe All (Anonymize) feature work?
- Clicking Wipe All (Anonymize) sets the Title, Author, Subject, Keywords, Creator, and Producer inputs to empty strings. When you click Apply & Save, the engine writes empty values to those six dictionary keys and updates the document modification date to the current timestamp.
- Can I edit metadata on password-protected or encrypted PDF files?
- No. Encrypted PDFs lock their internal object dictionaries against modification until decrypted. Unlock password-protected files first using the PDF Unlocker tool, and then load the decrypted PDF here to inspect or edit its metadata.
- Are my PDF files or metadata strings uploaded to any server?
- No. All metadata parsing, field editing, and PDF serialization happen locally inside your web browser within a 100 MB per-file memory ceiling. No document bytes or property strings are transmitted over the network.
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