PDF Metadata Viewer
Inspect PDF author, creator, producer, creation date, modification date, and PDF specification version.
About PDF Metadata Viewer
PDF documents contain embedded metadata records describing the title, author, corporate publisher, creation date, modification history, and authoring application software. Examining this hidden metadata is essential for digital forensics, copyright verification, and pre-publication privacy checks.
Many content creators accidentally publish sensitive information in hidden metadata, including employee usernames, internal file paths, and obsolete software versions.
This in-browser PDF metadata inspector reads document information dictionaries and Extensible Metadata Platform (XMP) XML data packages directly in your browser, displaying complete file properties without third-party server exposure.
To audit PDF documents thoroughly, check page counts with the PDF page counter or preview document security with the PDF watermark previewer.
Step-by-step practical guide
- Select a PDF file from your local storage using the Choose File button or drag-and-drop zone.
- Click Inspect Metadata or load the provided sample document to test the viewer.
- Review the primary document information table: Title, Author, Subject, and Keywords.
- Inspect production environment details: Creator application, PDF Producer software, and PDF specification version.
- Verify timeline timestamps: Creation date and latest modification timestamp formatted in clear local time.
- Check security and encryption flags to confirm digital access restrictions before distributing documents.
Engineering specifications and execution details
Parses the PDF trailer Information Dictionary (/Info reference object) across standard key parameters.
Detects and reads XMP metadata packets embedded within /Metadata XML streams.
Decodes standard PDF date string formatting (e.g. D:YYYYMMDDHHmmSSOHHmm) into ISO standard timestamps.
Identifies PDF version specification levels from header markers (PDF-1.3 through PDF-2.0).
Reports document security settings including user password flags and permissions matrices.
Data privacy and memory isolation
The file is parsed strictly inside browser memory.
No metadata fields, user credentials, document paths, or tracking metrics are logged or uploaded.
Common production use cases
- Journalists and privacy researchers verifying document authenticity and origin before citing leaked publications.
- Legal teams ensuring proprietary author names and client identifiers are scrubbed before court submissions.
- Graphic designers checking PDF version compatibility before submitting prepress files to commercial printers.
- Corporate compliance officers auditing outbound corporate publications for sensitive internal author names.
- Archivists and librarians cataloging digital publications with standardized bibliographic metadata.
Edge cases and operational boundaries
- Missing /Info dictionary: Some modern PDF generators store metadata exclusively inside XMP XML data streams; the viewer checks both locations.
- UTC timezone offsets: International documents created across varying timezones format offsets with relative directional indicators (such as +0500 or -0800).
- Sanitized stripped files: PDFs exported through privacy sanitization tools will display empty metadata fields, confirming successful scrubbing.
- Unicode character sets in author names: UTF-16BE encoded strings starting with byte order marks (FE FF) are decoded to proper Unicode text.
Frequently Asked Questions
What metadata is stored inside a PDF by default?
Most PDF export software automatically records document title, author name, creation timestamp, editing software, and operating system username.
Does inspecting metadata modify or alter the original file?
No. The viewer opens the file in read-only mode in browser memory. The original file on your computer remains completely unchanged.
Why is PDF metadata inspection important for privacy?
Authors often publish documents without realizing their computer username, internal network paths, and software versions remain embedded inside the file.
What does the Producer field indicate?
Producer indicates the conversion engine that generated the PDF binary, such as Adobe PDF Library, Quartz, or Skia.
Can this tool read metadata from scanned files?
Yes. Even scanned PDFs contain file creation dates, scanner model strings, and software generation metadata.
What is XMP metadata in a PDF?
XMP (Extensible Metadata Platform) is an ISO standard XML format created by Adobe to store standardized metadata across digital media files.
Does this tool require an active internet connection to work?
No. The metadata parser runs completely offline in browser memory, so you can inspect documents securely without network access.