Annotate Documents Online

Annotate, Comment and Tag your Document Contents for Efficient Collaboration Online for Free

GroupDocs.Annotation App

GroupDocs.Annotation App Supported Document Formats

Microsoft Office Formats
  • Microsoft Word: DOC, DOCX, DOCM, DOT, DOTX, RTF
  • Microsoft Excel: XLS, XLSX, XLSM, XLSB, CSV
  • Microsoft PowerPoint: PPT, PPTX, PPTM, POTX, POTM, PPSM, PPS, PPSX
  • Microsoft Visio: VSD, VSS, VSDX, VST
Other Formats
  • Portable: PDF (PDF/A-1a, PDF/A-1b, PDF/A-2a)
  • OpenDocument: OTP, ODT, OTT, ODS, ODP
  • Images: BMP, GIF, JPG, JPEG, PNG, TIFF
  • AutoCAD: CAD, DWG, DXF
  • Metafiles: EMF, WMF
  • Email: EML, EMLX, MSG
  • Web: HTM, HTML
  • Others: DICOM, DjVu
Free Document Conversion, Viewer, Merger app for Windows

Free Document Conversion, Viewer, Merger app for Windows

  • Easily convert, view or merge unlimited files on your own Windows PC.
  • Process Word, Excel, PowerPoint, PDF and more than 100 file formats.
  • No limit on file size.
  • Batch conversion of multiple files.
  • One app with rich features like Conversion, Viewer, Merger, Parser, Comparison, Signature.
  • Regular FREE updates with new features coming every month.
Free Download

Discover GroupDocs.Annotation free online app!

How to annotate documents online

How to annotate documents online

  • Click inside the file drop area to upload a file or drag & drop a file.
  • File will be automatically rendered for you to view instantly.
  • Scroll down to navigate between pages.
  • Add annotations to the document.
  • Download the annotated version of your file.

FAQ

  • ❓ How can I annotate a document?
    First, you need to upload a file: drag & drop your file or click inside the white area to choose a file. Then you will be redirected to the annotation application.
  • ⏱️ How fast can I start adding annotations to a document?
    The annotation app works fast. Typically it takes a couple of seconds to open a document and prepare it for adding annotations.
  • 🛡️ Is it safe to annotate files using free GroupDocs Annotation App?
    Of course! The preview files will be available instantly after the file uploaded. We will delete the uploaded file after 24 hours.
  • 💻 Can I annotate documents on Linux, Mac OS, or Android?
    Yes, you can use the free GroupDocs Annotation on any operating system that has a web browser. Our Annotation App works online and does not require any software installation.
  • 🌐 What browser should I use to annotate documents?
    You can use any modern browser to annotate documents, for example, Google Chrome, Microsoft Edge, Firefox, Opera, or Safari.

Powered By

 GroupDocs.Annotation for .NET API

Powerful document annotating .NET library & API.
Build your own document annotation management applications using our comprehensive set of APIs that allow you to annotate your documents!

More Platforms

 GroupDocs.Annotation for Java

Java version of GroupDocs.Annotation library & API.
Enjoy annotating your documents wherever Java lives!

 GroupDocs.Annotation Cloud

Easy to use cross-platform Cloud solution.
Our REST API helps you to develop cross-platform document annotator. Build tools for annotating all common business documents and image file formats.

Open-Source UI/UX Solutions

 GroupDocs.Annotation for .NET and Java

Integrate GroupDocs.Annotation functionality in your apps using our out-of-the-box open-source front-end solutions based on Angular and GroupDocs.Annotation for .NET/Java.
UI/UX solutions can be run as standalone application or can be integrated in any .NET/Java application, download and build your annotation solution within few clicks!

 GroupDocs.Total for .NET and Java

GroupDocs.Total is an open-source UI/UX solution where all GroupDocs products are working together as one.
GroupDocs.Total provides multiple high quality features against over 120 document formats, such as conversion, signature, parser and much more!
Viewer Annotation Conversion Comparison Signature Assembly Metadata Search Parser Watermark Editor Merger Redaction Classification Splitter Translation Unlock