Annotate Documents in a PHP Application

Add Platform Independent, Multi-format Document & Image Annotation Functionality to your own Applications.

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GroupDocs.Annotation Cloud SDK for PHP

GroupDocs.Annotation Cloud SDK for PHP


GroupDocs.Annotation Cloud is a REST API and universal document annotator that supports almost all common business document and image file formats including PDF, Microsoft Word, Excel, PowerPoint, raster images and many more. To use the features of the API in an easy and efficient manner in your PHP application without going into the underlying details of handling the HTTP requests and responses, we have developed the SDK for PHP, which is not only easy to incorporate but can also be customized to suit your needs.

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Advanced Document Annotation REST API Features



Multiple file formats support


Cross-platform compatibility


Convenient to use API


Easy integration


Export or import annotations


A robust set of annotation tools


Quick & Reliable Document Annotation

GroupDocs.Annotation Cloud API provides a number of ways to deal with annotations. It not only allows retrieving annotations from documents, but also adds(exports) or remove annotations from a document and retrieves the resultant document as the stream.

Remove document annotations - PHP

//Get your AppSID and AppKey at (free registration is required).
$configuration = new Configuration();
$annotationApi = new AnnotationApi($configuration); $request = new Requests\DeleteCleanDocumentRequest("template.pdf","SourceFiles"); $response = $annotationApi->deleteCleanDocument($request);

Robust Set of Annotation Tools

Text annotations:

  • Text annotation – add comments to selected text.
  • Text replacement – highlight which text should be replaced with what.
  • Text redaction – hide confidential text.
  • Strikeout/underline – highlight text with strikethroughs/underlines.
  • Typewriter – add sticky notes with rich text.

Figure annotations:

  • Area annotation – add notes to an area highlighted with a rectangle.
  • Point annotation – add notes to any point in the document.
  • Area redaction – hide confidential parts of an image or text.
  • Polyline – draw freehand lines and shapes.
  • Pointer/arrow – drop arrows pointing to an object.
  • Watermark – create text-based watermark overlays.
  • Distance – measure the distance between any objects in a document.

Easy Integration

It is easy to integrate GroupDocs.Annotation Cloud into your apps, as there is nothing to install on the server or client-side. Simply create an account at GroupDocs Cloud and get your application information. Once you have the App SID & key, you are ready to give the GroupDocs.Annotation Cloud REST API a try, and can annotate a multitude of document formats with simple API calls.

Convenient to Use

GroupDocs.Annotation Cloud API is completely independent of your operating system, database system or development language. You can use any language or platform that supports HTTP to interact with our API. However, manually writing client code can be difficult, error-prone and time-consuming. Therefore, we have provided and supported API SDKs in many development languages in order to make it easier to integrate with us. If you use the SDK, it hides the REST API calls and lets you use the features of the API in a native way for your preferred language.

Support and Learning Resources


GroupDocs.Annotation Cloud Product Family also includes SDKs for other popular languages as listed below: