Every PDF document carries hidden metadata — author information, creation dates, software used, keywords, and much more. Our free online PDF metadata extractor reveals all hidden document properties in your PDF files, displaying them in a clear, organized format. This is essential for document auditing, forensic analysis, library cataloging, compliance checking, and understanding the history and origin of any PDF document. Upload your file and instantly see who created it, when it was created and last modified, what software was used, and what additional metadata is embedded. The tool reads standard document information, XMP metadata, custom properties, and even encryption status. No software required, no registration, and all files auto-deleted within 15 minutes.
How to Extract PDF Metadata - Step by Step Guide
Step 1: Upload Your PDF
Upload your PDF file (up to 50 MB) by clicking the upload area or dragging and dropping your file directly into the browser. The upload process uses an encrypted TLS 1.3 connection to keep your document secure during transfer. You can upload any PDF regardless of version, including documents created with older software.
Step 2: View Metadata
All metadata is automatically extracted and displayed within seconds of your upload completing. The tool parses the entire document structure and presents information organized into clear categories so you can quickly find the fields you need. Every available metadata field is shown, including:
- Standard document properties (author, title, subject, keywords)
- XMP metadata (Dublin Core, PDF namespace, media management)
- Custom properties added by specialized applications
- Encryption status and permission settings
- PDF version information and structural details
Step 3: Export Results
Once extraction is complete, you have several options for saving or using the results. Choose the format that best fits your workflow:
- View On-Screen: Metadata displayed in organized, collapsible sections for quick review directly in your browser.
- Download Report: Export the full metadata report as a JSON file for programmatic use or as a plain text file for human reading and record-keeping.
- Copy Individual Fields: Click to copy specific metadata values to your clipboard for pasting into spreadsheets, reports, or other documents.
What Metadata Is Extracted
Why You Need This Tool
Uncover Hidden Information
PDF metadata often contains information that is not visible when reading the document. Author names, company details, software version numbers, and revision history may be embedded in the file without the document creator's knowledge. This tool reveals every piece of metadata stored in the file, giving you a full picture of the document's origin and history that is impossible to see by simply opening the PDF in a reader.
Protect Your Privacy
Before sharing a PDF externally, it is wise to check what metadata is embedded. Documents created in Microsoft Word, Adobe InDesign, or other professional software often embed the author's full name, organization name, computer username, and file system path. These details can reveal sensitive personal or corporate information. Extracting metadata first lets you identify what is exposed so you can strip it before distribution.
Streamline Document Management
Organizations that manage hundreds or thousands of PDF files benefit from automated metadata extraction. By reading title, author, subject, and keyword fields, you can build search indexes, populate document management system records, and automatically categorize files without opening each one manually. This tool provides a quick way to inspect and verify metadata before bulk processing.
Support Legal and Compliance Requirements
In legal discovery, regulatory audits, and compliance reviews, metadata is evidence. Courts and regulators may require proof of when a document was created, who authored it, and whether it has been modified. Extracting and preserving metadata ensures you can meet these requirements and demonstrate chain-of-custody information for critical documents.
Verify Document Authenticity
Metadata can help verify whether a document is genuine. If a PDF claims to be an original contract from 2019 but the metadata shows it was created last week with a different author, that discrepancy warrants investigation. Journalists, auditors, and investigators routinely check metadata to establish document provenance and detect potential forgeries.
Key Features
- Complete Extraction: Reads all standard, XMP, and custom metadata fields.
- Organized Display: Metadata organized by category for easy reading.
- Export Options: Download as JSON or plain text for programmatic use.
- Encryption Status: Shows encryption method and permission settings.
- Page Information: Dimensions, rotation, and bounding boxes for all pages.
- Font Summary: List of fonts used in the document.
- No Content Access Required: Reads metadata even from encrypted PDFs (metadata is typically unencrypted).
- Instant Analysis: Results in seconds.
Common Use Cases
Legal Discovery and Litigation Support
Attorneys and paralegals extract metadata from documents produced during discovery to establish creation dates, authorship, and modification history. Metadata can reveal whether a document was backdated, identify the actual author, and show which software was used — all of which may be relevant evidence in civil and criminal proceedings.
Journalism and Investigative Research
Journalists analyze metadata of leaked or publicly released documents to trace their origins and verify authenticity. A government report's metadata might reveal the original drafter, the department that produced it, or the date it was actually finalized, adding important context to reporting.
IT Security and Data Loss Prevention
Security teams audit documents leaving the organization to ensure no sensitive metadata leaks corporate information. Employee names, network paths, internal server names, and software license details embedded in PDFs can aid social engineering attacks if shared externally.
Academic Research and Citation Management
Researchers extract bibliographic metadata — title, author, subject, keywords — from academic papers to populate citation managers like Zotero, Mendeley, or EndNote. Automated metadata extraction reduces manual data entry and improves citation accuracy.
Quality Assurance and Prepress Verification
Print professionals verify PDF specifications before sending files to press. Checking the PDF version, embedded fonts, page dimensions, and color space through metadata ensures the document meets production requirements and reduces costly reprints.
Digital Archiving and Records Management
Archivists extract metadata for cataloging digital collections. Libraries, museums, and corporate records departments use metadata to build searchable indexes, assign classification codes, and ensure archived documents meet preservation standards like PDF/A.
Best Practices
Always Check Metadata Before Sharing Externally. Run a metadata extraction on any PDF before sending it outside your organization. This quick check helps you identify and remove sensitive information such as author names, internal file paths, or revision history that could compromise privacy or security.
Export Metadata for Record-Keeping. When auditing or cataloging documents, download the JSON export rather than relying on screenshots. JSON files are machine-readable, timestamped, and easy to archive alongside the original document for future reference.
Compare Metadata Across Document Versions. If you have multiple versions of a document, extract metadata from each version and compare creation dates, modification dates, and author fields. This comparison can reveal the document's revision timeline and help identify unauthorized changes.
Use Metadata for Automated Filing. If you manage a large document library, leverage extracted metadata fields like title, subject, and keywords to build automated filing and search systems. Many document management platforms can import metadata directly from JSON exports.
Verify PDF/A Compliance. For documents intended for long-term archival, check the metadata to confirm the PDF version and whether the file meets PDF/A standards. Missing metadata fields or unsupported features may indicate the document needs further processing before archiving.
Technical Details
Our PDF metadata extractor uses pikepdf, an open-source library licensed under MPL-2.0, to parse PDF file structures at the binary level. When you upload a PDF, the tool reads the document's cross-reference table and trailer dictionary to locate all metadata streams. Standard document information is extracted from the Info dictionary, while XMP metadata is parsed from the XML-based metadata stream embedded in the file's catalog.
The extraction process is read-only — the tool never modifies your PDF file. Even encrypted PDFs can typically have their metadata read because the PDF specification stores metadata outside the encryption envelope by default. The tool identifies the encryption algorithm (RC4, AES-128, AES-256) and permission flags without needing to decrypt the document content.
Page-level information is gathered by iterating through the document's page tree, reading each page's media box, crop box, rotation angle, and resource dictionary. Font information is summarized from resource dictionaries across all pages. The entire process typically completes in under two seconds for documents up to 50 MB.
All processing happens server-side over a TLS 1.3 encrypted connection. Your file is stored temporarily in an isolated session directory and automatically purged within 15 minutes. No data is retained, logged, or shared.