Pick your platform, copy the package command, and ship your first integration.
using GroupDocs.Annotation;
using var annotator = new Annotator("document.pdf");
annotator.Add(new AreaAnnotation());
GroupDocs.Annotation in production — fast, flexible, and source-agnostic.
Area, text, point, polyline, distance, watermark, redaction, and replies.
Round-trip annotations as XML or burn them into the output.
Attach threaded comments and author metadata to any annotation.
PDF, Word, Excel, PowerPoint, images, and more.
A representative slice of the formats GroupDocs.Annotation works with.
Run GroupDocs.Annotation on your own files in the free, ads-free Annotation web app — no install required. Files are deleted after 24 hours.