Category Archive: GroupDocs.Annotation Product Family

Official blog with announcements of latest supported features, hot fixes, technical articles, tips and videos of GroupDocs.Annotation – A document annotation API for .NET, Java and Cloud.

Annotate PDF files using Java

There was a time when we used to discuss document content and feedback in long email threads with multiple attachments and different file versions. Now we can simply use annotations to markup the document with messages and replies and send it. In this article, you will learn how to programmatically annotate PDF documents in Java with your application.

The following are the topics discussed briefly in this article:

  • Java API to Work with Annotations in PDF
  • Add Annotations to PDF in Java
    • Arrow annotation to PDF
    • Rectangle annotation of PDF
    • Ellipse or Oval annotation to PDF
    • Distance annotation to PDF
  • Remove Annotations from PDF in Java

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Add Point Annotation in Documents using .NET and Java API

As all our records and documentations are facing a digital transformation. It has made it quite necessary for us to have a good knowledge of the tools that may help us in the long run. Annotation is one of those tools which may help you in adding the extra, yet necessary, piece of information into your documents.

Annotation helps readers in understanding the text in a better way. It also helps different people working on the same task to exchange … Continue Reading

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Add Annotations in a PDF file using C#

We are living in a paper-less era. Everything in business has gone digital. If you are given a document (e.g. PDF, Word, Presentation) and asked to brief the sales achieved in 2018. What will you do? You will try to highlight or add arrow to the concerned text.

Supported Annotations

Following are the supported annotation types:

  • Area
  • Arrow
  • Distance
  • Ellipse
  • Link
  • Point

See full list of supported annotations in this article and list of supported file formats here.

Insert

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Annotate documents programmatically using GroupDocs.Annotation for .NET

How about annotating a document programmatically? GroupDocs.Annotation for .NET offers a wide range of annotations (e.g. graphical, watermark, redaction, underline, etc.) that can be added in any supported document without third party software/tool installation.

If you are already using GroupDocs.Annotation for .NET. You can migrate to version 19.9 because:

  • Annotator class introduced as a single entry point to manage the document annotating process to any supported file format
  • The overall rendering speed improved dramatically by saving rendered page as soon as
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Adding Ellipse Annotation in a PDF Document

GroupDocs.Annotation API

GroupDocs.Annotation comes with an extensive set of tools that you can use to easily add common shapes to your documents as an annotation. The list of tools is not limited to area, point, text, polyline, etc. In this section, we will primarily discuss how the Ellipse annotation could be added in a PDF document by using GroupDocs.Annotation API.

Adding Ellipse Annotation

While discussing the family of annotation types, we cannot ignore ellipse annotation. It could be regarded as … Continue Reading

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Add Ellipse Annotation in Multiple Documents

We are always keen to make our APIs rich in features and enhance usability. When we talk about annotation types. One cannot neglect ellipse annotation. Its a multi purposed annotation type. For instance you can use it to display extra information on your gauge or capture graph hits against a target line. Previously, Ellipse annotation was implemented in .NET version and it seemed very useful. We are pleased to announce that Ellipse annotation is now added in GroupDocs.Annotation for Java … Continue Reading

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Export Annotations to TIFF Files

This may be a big news for those who annotate TIFF documents, most of the time. Previously, there was issue with this format. API was throwing exception “Cannot open image file”. But now you can:

  • Import annotations from TIFF file
  • Delete annotations from it
  • Export annotations into it

Moreover, in trial mode you were not able to get document info. This issue is now resolved in GroupDocs.Annotation for .NET 19.6.

Lets see new features introduced:

More Slide Formats
API… Continue Reading
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Cache Page Previews in GroupDocs.Annotation for Java

EnableCaching feature stores image representation of a document in a directory at the local drive. In case of repetitive processing/opening of a document, it uses cached data. This thing helps to avoid the processing of the same document again and again. You might be waiting for this feature. The wait is over now. GroupDocs.Annotation for Java 19.5 permits you to enable cache mode and cache page previews. Let’s take a overview of its code.

We also added possibility to display … Continue Reading

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Implement Link Annotation in PDF Documents

You might be wondering if there would be more annotation types. The wait is over, we’ve introduced Link Annotation in GroupDocs.Annotation for .NET 19.4. With the passage of time we’ll introduce more annotations. Currently, Link Annotation is supported for PDF, Slides and Word documents only. Let’s see the minimal set of fields required for Link Annotation.

There is one improvement and few bug fixes introduced as well. Previously,
GetPdfFile method was not processing password protected documents. Now, if you need … Continue Reading

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Add Ellipse Annotation in Slides

We try our best to provide minimal yet appropriate solutions to our customers. Hence, in this month’s release of GroupDocs.Annotation for .NET 19.3 you will observe some new “easy-to-implement” features. Lets start with ellipse annotation. You might be looking for it, we’ve now added its support for different document formats.

Ellipse Annotation

GroupDocs.Annotation for .NET 19.3 provides GetThumbnail method for PageImage class, that helps you in getting thumbnails of PDF document pages.

Get Thumbnails

You’ll be glad to hear that … Continue Reading

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