Java parses pdf to obtain the content information in pdf;

The first one uses the open source framework pdfbox API/downloads/free-spire-pdf-java.html provided by open source organizations.

Friendly reminder: the free version has a page output limit of 10, and only the first 10 pages can be output when outputting the result document. Only 10 pages before conversion are supported when PDF documents are converted into images, Word, HTML, XPS and other formats. If the limit is exceeded, you can upgrade to the commercial version, and we only carry out irregular maintenance on the free version.

Business edition.

/Introduce/Spire-PDF-JAVA.html .

api .

/licensing/install-spire pdf-for-Java-from-maven-repository . html .

Features: commercial version charges, free version is limited, developers can debug, and the parsing format is friendly. The analysis results are displayed in lines, and pdf graphics, watermarks, texts, barcodes, etc. can be added, deleted and modified. In short, I personally feel that it is more convenient than pdfbox, but it is charging. Who let our company have no money?

Main functions:

It's just a free Java version of Spire.PDF, without Adobe Acrobat.

Java Free Spire.PDF is a completely independent PDF class library. Its running environment does not need to install Adobe Acrobat or any other third-party components.

Diversified PDF document operation functions.

Java Free Spire.PDF supports drawing text, pictures, tables, barcodes and shapes to PDF, extracting text and pictures, creating, filling and deleting PDF forms, adding text/picture watermarks to PDF, adding, updating and deleting PDF bookmarks, operating hyperlinks, attachments and comments, and adding picture/text stamps to PDF.

Document information settings.

Java version of free Spire.PDF supports setting PDF document information, such as document attribute settings and preferences (page orientation, page size, zoom ratio, etc. ).

High-quality document conversion function.

Java Free Spire.PDF supports high-quality conversion of PDF documents into Word, HTML, XPS, pictures, SVG and PDF/A formats, and high-quality conversion of XPS documents into PDF formats.

Record the security settings.

Java Free Spire.PDF supports adding and verifying digital signatures to PDF documents, encrypting and decrypting PDF documents, modifying the security rights of PDF documents, and detecting whether the signed PDF documents have been modified.

Easy to integrate.

Developers can easily integrate Java's free Spire.PDF into Java(J2SE and J2EE) applications.