What is the PDF Metadata Viewer?
The PDF Metadata Viewer is a robust, browser-based utility that extracts and displays the hidden internal properties embedded within PDF files. Every time a PDF is created or modified, metadata such as the Author, Title, Creation Date, and the software used (Producer/Creator) is often quietly saved within the file. This tool exposes that data instantly, formatting it into an easily readable structure and allowing you to export it as JSON.
Powered by the robust `pdf-lib` library, all parsing happens securely on your local device, ensuring your documents remain private.
Step-by-step How to Use
- Click the file input button to select a PDF document from your computer.
- Click the "Inspect Metadata" button to begin the extraction process.
- Review the extracted properties displayed in the results area. You will see fields like Title, Author, Page Count, and Dates.
- If you need to use this data elsewhere, click the "Copy JSON" button to copy the structured data to your clipboard.
Key Features
- Comprehensive Extraction: Reads standard PDF dictionary entries including Title, Subject, Author, Keywords, Creator, and Producer.
- Technical Details: Quickly identifies the exact page count and whether the document is encrypted.
- JSON Export: Formats the extracted metadata into clean, structured JSON, perfect for developers or automated workflows.
- 100% Client-Side: Utilizes modern JavaScript to parse the binary PDF data directly in your browser. No files are uploaded to our servers.
Real-World Industry Applications
Legal professionals and digital forensics experts often use metadata viewers to verify the origin and creation dates of electronic documents submitted as evidence. Librarians and archivists utilize metadata to properly catalog digital assets. Furthermore, SEO specialists may inspect PDF properties to ensure that important documents hosted on a website contain appropriate Titles and Subjects, which search engines often index for ranking purposes.
Client-Side Privacy Guarantee
Handling sensitive documents requires strict security. This tool guarantees absolute privacy because it operates entirely offline after the page has loaded. The `pdf-lib` library processes the binary array buffer of your document directly in your browser's memory. No document contents or metadata are ever transmitted, logged, or saved remotely.
Frequently Asked Questions
- Why are some fields marked as null or empty?
- Not all PDFs contain metadata. If the software used to create the PDF did not embed an Author or Title, those fields will naturally appear as empty or null.
- Can this tool edit the metadata?
- Currently, this tool is designed for viewing and extracting metadata. To edit PDF properties, a dedicated PDF editor or a metadata modification tool is required.
- Does this work on encrypted PDFs?
- If a PDF is password protected (encrypted) against reading, the tool may not be able to parse the metadata without the password, and will display an error.
- Is my document uploaded for analysis?
- No. The document remains strictly on your local machine. All analysis is performed by your browser.