How to extract pdf metadata in Java – GroupDocs.Parser

If you need to how to extract pdf metadata in Java quickly and reliably, you’ve come to the right place. This hub gathers every GroupDocs.Parser Java tutorial you need to read document properties, get author name, and retrieve creation dates from a wide range of file formats. Whether you’re building a document‑management system, a search‑indexing pipeline, or just auditing file attributes, these guides give you clear, production‑ready examples.

Quick answers

  • What library extracts PDF metadata in Java? GroupDocs.Parser for Java.
  • How many file formats does GroupDocs.Parser support? Over 100 formats, including PDF, DOCX, XLSX, and email files.
  • Do I need a license for development? A temporary license works for testing; a full license is required for production.
  • Can I read custom metadata fields? Yes, the API exposes both standard and custom properties.
  • What Java version is required? Java 8 or higher.

What is GroupDocs.Parser?

GroupDocs.Parser is a Java library that extracts text, metadata, and structured data from more than 100 file formats without needing external software. It works entirely in‑process, so you can run it on any server‑side Java environment. It provides a set of APIs to load files, extract content, and retrieve metadata, making it easy to integrate document processing into your applications.

Why use GroupDocs.Parser for PDF metadata extraction?

The library supports extraction from 50+ PDF versions and can process files up to 2 GB in under 2 seconds on a typical 4‑core server. It also returns 100 % of standard PDF properties (title, author, subject, keywords, creation date) plus any custom XMP fields, enabling you to build rich search indexes or compliance reports without additional parsing tools.

How to extract PDF metadata in Java with GroupDocs.Parser?

Parser is the main class that loads and parses documents. Load the target PDF with the Parser class, call getInfo() to obtain a DocumentInfo object, and then read the Properties collection for each standard field. DocumentInfo represents the extracted information about a document, including its properties and metadata. The API handles encrypted PDFs when you provide the password, and it streams large files to keep memory usage low.

How to read document properties Java using GroupDocs.Parser?

Create a Parser instance for the PDF file, invoke getInfo().getProperties(), and iterate over the returned map to access keys such as Title, Author, Subject, and Keywords. The method returns null for missing values, allowing you to handle optional metadata gracefully.

Available tutorials

Extract & Print Email Attachments Metadata Using GroupDocs.Parser for Java

Learn how to extract and print metadata from email attachments using GroupDocs.Parser for Java. This guide covers setup, extraction, and metadata printing with code examples.

Extract Email Metadata Using GroupDocs.Parser in Java: A Comprehensive Guide

Learn how to efficiently extract email metadata using the powerful GroupDocs.Parser library in Java. This guide covers setup, implementation, and optimization.

Extract Metadata from Excel Spreadsheets Using GroupDocs.Parser Java: A Comprehensive Guide

Learn how to automate metadata extraction from Excel files using GroupDocs.Parser Java. This guide provides step-by-step instructions, performance tips, and practical applications.

Extract Outlook Attachments & Metadata Using GroupDocs.Parser Java: A Complete Guide

Learn how to extract attachments and metadata from Outlook PST files using GroupDocs.Parser Java. This guide covers setup, implementation, and best practices for efficient email management.

Extract PowerPoint Metadata Using GroupDocs.Parser in Java: A Complete Guide

Learn how to efficiently extract metadata from PowerPoint files using GroupDocs.Parser for Java. This guide covers setup, implementation, and practical applications.

How to Extract EPUB Metadata Using GroupDocs.Parser in Java: A Developer’s Guide

Learn how to extract metadata from EPUB files using GroupDocs.Parser in Java. This guide covers setup, implementation, and practical applications.

How to Extract Metadata from Office Documents Using GroupDocs.Parser Java: A Complete Guide

Learn how to efficiently extract metadata like author names and creation dates from Microsoft Office documents using GroupDocs.Parser Java. This guide covers setup, implementation, and practical applications.

How to Extract PDF Metadata Using GroupDocs.Parser in Java: A Step‑By‑Step Guide

Learn how to extract metadata from PDF files using the GroupDocs.Parser library in Java. This guide covers setup, implementation, and practical applications.

Master Java Metadata Extraction Using GroupDocs.Parser: A Complete Guide

Learn how to efficiently extract metadata from documents using GroupDocs.Parser in Java. Enhance your data management and search capabilities with this comprehensive guide.

Additional resources

Frequently asked questions

Q: Can I extract metadata from password‑protected PDFs?
A: Yes. Provide the password when creating the Parser instance, and the library will decrypt the file on the fly.

Q: Does GroupDocs.Parser require any native dependencies?
A: No. It is a pure‑Java solution and runs on any JVM that meets the minimum version requirement.

Q: How large a PDF can I process without running out of memory?
A: The streaming API lets you handle files up to 2 GB while keeping memory usage under 200 MB.

Q: Are custom XMP metadata fields accessible?
A: Absolutely. The Properties map includes all custom fields, which you can query by their exact key names.

Q: Which Java versions are officially supported?
A: Java 8, 11, and 17 are fully supported; newer LTS releases work as well.

Last Updated: 2026-08-10
Tested with: GroupDocs.Parser 23.8 for Java
Author: GroupDocs