Read PDF Form Fields in Java

In this article, we will discuss how to parse PDF document and extract values from PDF forms programmatically in Java. There are many situations, where we have several filled survey forms or feedbacks in PDF format from a large audience. We can easily extract the filled data values and use them for analysis. Let us now move straight towards reading these PDF forms and extract filled data field values within Java applications.

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GroupDocs offers you 25% OFF on GroupDocs.Total – all GroupDocs APIs you have ever wanted. Do not forget to use the HOLOFF2020 coupon code while ordering to avail this discount offer.

The offer will remain valid till 31st January 2021. So be one form the lucky ones to get your set of APIs.

This offer is only available on new GroupDocs.Total purchases and cannot be used in conjunction … Continue Reading

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Find and Remove Watermarks from Documents in Java

This article is useful for Java developers who are looking for a way to find and remove text or image watermarks from PDF, Word, Excel, PowerPoint, and Visio documents. In one of our posts we have learnt finding and removing watermarks from documents in C#. Let's now jump to quickly see a little about a Java API that allows adding, finding and removing watermarks from various documents in different ways.

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Find and Remove Watermarks from Documents in C#

Today, we will have a look at how to find and remove watermarks from documents in C#. There can be text and image-based watermarks in a document. We can easily search and programmatically remove such watermarks from many PDF, Word, Excel, PowerPoint, and Visio supported documents.

Following topics will be covered in this article:

  • .NET API for removing watermarks
  • Find watermarks in documents using C#
  • Remove watermarks from documents in C#
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Convert CAD Drawings to PDF in C#

Today, we will learn how to programmatically convert the CAD drawings to PDF format in C#. Previously, in an earlier post, we did the same but in Java. We looked to convert the DWG, DGN, and DWF files into PDF document with the code example. Let's do it in C# using the document conversion API for .NET.

Following topics will be covered in this article:

  • C# API to Convert CAD Drawings
  • Converting CAD Drawings (DWG, DWF, DGN) to PDF in C#
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Convert CAD Drawings to PDF in Java

CAD stands for Computer-Aided Design. It is used to create 2D and 3D architectural designs, computer animations, special effects in movies, technical drawings, and much more. PDF is one of the most well-known file formats that is famous due to its portability. Here comes the need to convert CAD files to PDF format when such technical drawings are to be transferred to a normal user who is not equipped with the technical software that supports CAD drawings. This article will help programmers to add the feature to convert different CAD formats like DWG, DGN, or DWF into PDF in Java applications.

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Extract Images from Documents using C#

In this article, we will be learning to programmatically extract images from PDF, Excel, PowerPoint, and Word documents in a C# application using document parsing .NET API.

GroupDocs.Parser for .NET is document parsing and data extraction .NET API. It supports document parsing and extraction of images, text, and metadata from word-processing documents, spreadsheets, presentations, archives, and email documents.

Extracted images can be saved in BMP, GIF, JPEG, PNG, and WebP formats.

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Extract Images from Documents using Java

Today, we will learn to programmatically extract images from PDF, Excel, PowerPoint, and Word documents using Java. For the extraction of images, we will use GroupDocs.Parser for Java. This Java API supports the parsing of documents and extraction of images, text, and metadata from word-processing documents, spreadsheets, presentations, archives, and email documents. Extracted images can be saved in BMP, GIF, JPEG, PNG, and WebP formats.

Following topics will be covered in this article:
  • Image Extraction Java API
  • Image Extraction from PDF documents in Java
  • Extract Images from Word, Excel, PowerPoint documents in Java
  • Extract Image from Specific Page in Java
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Insert OLE Objects in Word, Excel, PowerPoint using Java

Today, we will be learning to embed PDF and other different documents as OLE objects in Word, Excel, PowerPoint files using Java. For embedding the documents via Object Linking and Embedding, we will be using the GroupDocs.Merger for Java API that also allows us to efficiently combine/merge and split multiple documents with minimum lines of Java code.

Steps shown here will guide you to:
  • Insert PDF as OLE object into MS Word document.
  • Embed Word document as OLE object into Excel spreadsheet.
  • Insert Excel sheets as OLE object into presentations.
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