Author Archives: Shoaib Khan

Play and Pause Animated GIF and APNG Images in Web Pages using C#

GIF and APNG are from the list of most common animated image formats. GIF stands for Graphics Interchange Format and APNG files are the Animated Portable Network Graphics. If we compare GIF and APNG files of the same quality, it is noticed that APNG files are smaller in size. This article will be discussing to play and pause animated GIF and APNG files in an HTML web page using C#.

The following topics will be covered in this article:

  • .NET API for Animated Images
  • Play and Pause Animated APNG Image in HTML using C#
  • Play and Pause Animated GIF Image in HTML using C#
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Extract Images from EPUB, FB2, CHM eBooks in C#

An electronic book, popularly known as eBook, is a book in digital form that is readable on various electronic devices. These devices include dedicated eReaders like Kindle, or laptops, desktop computers, and smartphones. There are many popular file formats of eBooks in-use in the market that include; EPUB, FictionBook FB2, Microsoft Compiled HTML Help - CHM, DjVu, MOBI, PDF, and many others. As a programmer, this article will help you to programmatically extract images from eBooks in C# within .NET applications.

Extract Images from eBooks in C# .NET
EPUB eBook from the Adobe Sample eBook Library

The following topics will be covered in this article:

  • .NET API for Image Extraction from eBooks
  • Extract Images from EPUB eBook in C#
  • Extract Images from FB2, CHM eBooks in C#

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Generate QR Code in Java to Sign Documents and Images

QR code (Quick Response code) is the type of 2D Barcodes or matrix barcode. It is the machine-readable label that contains information about the attached item. This article will guide you about programmatically adding QR codes to electronically sign your documents and images using Java.

I will be using GroupDocs.Signature for Java API to add QR codes in PDF files, word documents, spreadsheets, presentations, and images like JPG/JPEG, PNG, WebP, BMP, GIF, SVG, CMX, and TIFF.

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Convert Presentations to PDF in Java

As PDF is the popular portable document format, so there comes the need to convert documents of other formats to PDF. Today, we will see different ways to convert PPT, PPTX, or ODP presentations to PDF in Java. In an earlier post, we have seen how to convert presentations using C#.

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Generate Reports from JSON Data in Java

JSON is a formatted and readable data interchange format to transmit data with attributes. However, the large data in JSON format is not very presentable and easily understandable. We mostly need to convert the large JSON data into a presentable format. This article will guide you to convert JSON data into PDF report in Java using a simple template.

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Generate QR Code in C# to Sign Documents and Images

In this article, we will see how to programmatically add QR codes to electronically sign documents and images using C#. GroupDocs.Signature for .NET is the API to add QR codes in PDF files, word processing documents, spreadsheets, presentations, and images.

It supports various electronic signatures for a large list of supported file formats. Among the QR codes, it supports Aztec Code, DataMatrix Code, GS1 DataMatrix, GS1 QR, QR types. The API allows us to add QR codes to JPG/JPEG, PNG, WebP, BMP, GIF, SVG, CMX, and TIFF images and some more image file formats as well.

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Extract Data from Invoices and Receipts in Java

In the era of online businesses, the use of digital invoices and receipts has largely increased. Similarly, the efficient data extraction from these digital invoices is also demanding. In this article, you will be knowing how to extract data from PDF invoices or receipts programmatically in Java.

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Convert WebP to JPG, PNG, and PDF in Java

WebP images give transparency like PNG, animate like GIF, and the most important for any web developer is the smaller size than comparative quality JPG format. However, due to incompatibility issues or any other requirement, it is sometimes needed to convert the WebP image into JPG, PNG, or other formats.

While converting the WebP to JPG, PNG, or other formats, you can also apply color adjustments to the output images. You can change the contrast, brightness, and gamma of the resultant image. The Image can be flipped, rotated, apply watermarks, or get the grayscale image as the output.

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Image Comparison in C# to Spot the Differences

Whether you want to build an application with spot the difference feature or if you want to compare two images within any of your image processing .NET based applications, you are at the right place. After this article, you can easily compare JPG, PNG, BMP, or images with some other file formats. Without wasting time, let's compare images in C# using the .NET API for document and image conversion.

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GroupDocs.Total Discount Offer Ends January 31st

Offer Ends 31st Jan 2021 on GroupDocs.Total

New Year 2021 starts, but soon the big offer ends on January 31st.

GroupDocs offered 25% OFF on GroupDocs.Total for .NET and Java. The offer remains valid till 31st January 2021. Avail this offer before it ends.

Do not forget to use the HOLOFF2020 coupon code while ordering to avail this discount offer.

This offer is only available on new GroupDocs.Total purchases and cannot be used in conjunction with other offers, renewals, or upgrades. Only available directly from groupdocs.com, not … Continue Reading

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