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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.
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#.
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.
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.
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.
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.
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.
New Year 2021 starts, but soon the big offer ends on January 31st.
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
In this article, we will learn how to read and parse PDF documents and then programmatically extract PDF form field values in C#. Earlier, we have seen how to extract values from PDF forms in Java. After reading these articles, if you have filled feedback forms, you can extract the values within your .NET & Java applications for analysis or save them in the database.