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GroupDocs.Total for Java installs a single Maven artifact that contains every GroupDocs document API. This guide shows the main features of each one, with a complete Java example per feature that you can copy and run as-is — each comes with the sample file it reads and the file it produces.
These pages are a starting point, not a reference. Once you know which API you need, follow the Learn more links at the bottom of each page to that product’s own documentation, where every option is documented in full.
| Product | Use it to | Entry point |
|---|---|---|
| Conversion | Convert between 170+ document and image formats | Converter |
| Viewer | Render documents to HTML, PDF or images without any external software | Viewer |
| Comparison | Find the differences between two versions and accept or reject them | Comparer |
| Watermark | Stamp text or image watermarks onto documents | Watermarker |
| Metadata | Read, edit and strip document metadata | Metadata |
| Parser | Extract text, images and data from documents | Parser |
| Merger | Join, split and rearrange documents and their pages | Merger |
| Redaction | Remove sensitive content so it cannot be recovered | Redactor |
| Signature | Sign documents electronically and verify existing signatures | Signature |
| Search | Index a document collection and query it | Index |
| Editor | Round-trip a document through HTML for a web editor | Editor |
| Annotation | Add review markup and read it back | Annotator |
GroupDocs.Assembly, GroupDocs.Markdown and GroupDocs.Classification are not part of GroupDocs.Total for Java and are not covered here.
Most of these follow the same shape — open a file, do one thing, save. Two do not, and their pages explain why: Search works on a folder rather than a file and indexes before it queries, and Editor is a three-stage round trip through HTML rather than a single call.
- Install the package as described in Installation.
- Set a license as described in Licensing and evaluation. Without one, the APIs run in evaluation mode and add trial watermarks to output.
- Every example on these pages uses a sample file you can download from the tab beside the code.
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