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How to add layers to PDF page using optional content
IntroductionWhile working on exporting the PDF document, sometimes you need many versions of the same content to be on one page along with an option to show only one version at once. A multilanguage...
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PDFA validation - overcoming limitations of validation tools
IntroductionPDF/A is a perfect alternative when it comes to archiving and saving documents for later use. The format guarantees that the document can be read years after creation because all resources...
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Search text in PDF documents using regular expressions
IntroductionSearching text in PDF document is easy and this feature became available to users of our Apitron PDF Rasterizer for .NET component many releases ago. Now we’ve updated the API and you can...
View ArticleApitron introduces Enterprise License for all PDF components
As a response to customers requests, we introduced a new enterprise licensing plan - a perfect choice for companies aiming to create an unlimited number of applications using our PDF components for all...
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Windows 10 universal application pdf viewer control sample
IntroductionRendering and showing PDF documents in Windows 10 Universal applications can be a tricky task and that’s why we prepared a PDF Viewer sample based on the Apitron PDF Rasterizer .NET...
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How to find and highlight links in PDF documents
IntroductionIf you create a custom viewer for PDF documents, then you could try Apitron PDF Rasterizer library that has unique features designed specifically to meet the needs of custom viewer writers....
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How to add free text annotation with custom appearance to PDF page
IntroductionPDF specification defines many annotation types suitable for various purposes, just to name a few: Link annotation, Text annotation, Line, Square and Polygon annotations, Watermark...
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Convert PDF to image using ICC color profile for CMYK to RGB transformation
IntroductionPrinting industry has many standards and modern printing devices actually operate with colors using specific colorspaces different from well-known sRGB or AdobeRGB. One of the widely used...
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How to convert PDF to HTML (C# sample)
IntroductionWhile PDF itself is a perfect format for storing documents, sometimes you might be interested in converting it to HTML for various reasons, e.g. for implementing quick presenter capable to...
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Setting custom properties for PDF signatures
IntroductionSoftware modules that digital signatures of the PDF file are called Filters (signature handlers) in PDF terms. There are a few existing filters e.g. Adobe.PPKLite or Adobe.PubSec.When the...
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Adding image and text annotations to PDF documents, an interactive WPF PDF...
IntroductionPDF annotations became the natural way to amend existing PDF documents, be it reviewer’s notes, stamps or just custom images like approval marks. Natively supported they provide an easy and...
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How to render and display PDF layers using advanced rendering settings
IntroductionSometimes you need to display only a part of the actual content contained on the PDF doc’s page, or maybe just working on a custom PDF viewer with support for layers for different types of...
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Introduction to FDF or Forms Data Format
IntroductionAll of you probably have seen or filled PDF forms while submitting tax reports, registration data and so on. PDF offers more than enough to support forms based workflow and to make data...
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Convert PDF to TIFF using custom rendering settings
IntroductionThe task to convert from PDF to TIFF format can sometimes be tricky and quite challenging if you don’t have the right tool for that. Our Apitron PDF Rasterizer for .NET component has been...
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Convert PDF to tiff using custom bitonal image conversion
Introduction Sometimes default PDF to TIFF conversion doesn't provide the desired results, especially if it comes to black and white tiffs, containing so-called bitonal images. We've recently added a...
View ArticleProcess and manipulate PDF content using Apitron PDF library
Dear Customers,we wish you a happy new year and will continue to provide the best PDF tools and support on the market. Thanks for choosing our products and your invaluable feedback. Should you have any...
View ArticleLong-term validation of signatures in PDF documents or LTV enabled signatures
Long-term validation of signatures in PDF documents is a mechanism to check that the signature and all related certificates are still valid at the time of checking (opening the doc) without making any...
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How to programmatically delete, edit or replace content in PDF documents
IntroductionReplacing, editing or deleting content from PDF documents programmatically is not a trivial task and requires expert knowledge of the format and internal structures to be implemented from...
View ArticleSigning pdf documents with smartcards using cryptoapi or PKCS#11...
Signing with smartcards might be challenging as they usually restrict private key export and only allow signing via own custom api, integrate with existing cryptoserviceproviders (windows cryptoapi) or...
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Open source Apitron PDF Kit extensions library
IntroductionApitron PDF Kit is an outstanding library for all kinds of tasks related to PDF, it offers well-designed and balanced API that follows the specification as much as possible at the same time...
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