Archive

2022

DEVELOPMENT  |  C++ • PDF PDF vs. DOCX: How Textual Contents Can Be So Different A dive into the PDF and DOCX formats to understand the advantages of each.

TUTORIALS  |  Java • Kotlin • PDF • How To Programmatically Editing a PDF Using Java How to use PSPDFKit Library for Java to perform various editing operations on a PDF document programmatically.

2021

TUTORIALS  |  iOS • How To • Signing • PDF How to Digitally Sign a PDF Using a YubiKey This blog post describes how you can integrate PSPDFKit for iOS and a YubiKey to sign PDFs via NFC using an iPhone.

SOLUTIONS  |  PDF • Insights Revolutionizing the Construction Industry with PDF Technology Learn how PDF SDKs can be leveraged for the construction industry

DEVELOPMENT  |  PDF • C++ How to Save Custom Data in Image Files Image files hold more than just images, and in this post, you'll learn how to save custom data in them.

DEVELOPMENT  |  PDF • UI/UX • Insights What Is Text Shaping and Why Do We Do It? Some text in some languages requires text shaping to render correctly. This will explain a little about what exactly that is.

TUTORIALS  |  Android • Kotlin • How To • Jetpack Compose • PDF Opening a PDF in a Jetpack Compose Application How to open a PDF in a Jetpack Compose application.

TUTORIALS  |  .NET • C# • PDF • How To How to Edit a PDF Programmatically with C# Using PSPDFKit to edit a PDF in .NET.

TUTORIALS  |  Web • JavaScript • PDF • How To Processing PDF Files in a Browser Using JavaScript See how PSPDFKit for Web can be used to programmatically edit PDF files in a browser.

DEVELOPMENT  |  Signing • PDF • Debugging • Support How We Debugged a Customer Problem with a Signed PDF This blog post details how the PDF expertise of the PSPDFKit team helped unblock a customer with a tricky PDF problem.

TUTORIALS  |  React Native • How To • PDF How to Build a React Native PDF Viewer This post shows how to add PDF support to your React Native app running on iOS and Android.

TUTORIALS  |  How To • PDF • Node.js How to Generate PDFs from HTML with Node.js Learn how to prepare an invoice leveraging HTML's powerful layout capabilities.

TUTORIALS  |  Java • PDF • How To Printing a PDF with Java A tutorial showing how PSPDFKit can be used to easily print a document using Java.

DEVELOPMENT  |  PDF • Insights Optimizing PDFs for Printers How to make sure your users get a good experience when your PDF is printed.

TUTORIALS  |  Cordova • How To • PDF • PDF Viewer How to Build a Cordova PDF Viewer This post shows how to add PDF support to your Cordova app running on iOS and Android.

DEVELOPMENT  |  PDF • Tips • Performance • Insights How a B-Tree Helped Reduce Memory Usage in Our Framework This blog post describes the approach we took to save around 15 percent of memory in our framework by first identifying bottlenecks, and then changing one of our dictionary implementations to use a specialized data structure known as a B-tree.

TUTORIALS  |  Processor • JavaScript • HTML • PDF • How To How to Generate PDF Event Tickets Find out how to create custom tickets like boarding passes and event e-tickets.

DEVELOPMENT  |  PDF • Components • Insights Why PDF Uses Floats and Word Uses EMUs This post explores and gives examples of the units of length in Word documents.

TUTORIALS  |  Android • Kotlin • PDF • How To • Annotations Embedding Audio in PDFs: Sound Annotations in Depth An introduction to PDF sound annotations.

DEVELOPMENT  |  PDF What Contributes to Slow PDF Rendering? We briefly cover how PDF rendering works and some reasons why rendering a PDF can be slow.

DEVELOPMENT  |  PDF • C++ • PDFium Tackling PDF Performance Issues Digging into the internals of PSPDFKit to improve PDF performance.

TUTORIALS  |  iOS • Swift • PDF • How To Creating and Filling Forms Programmatically in Swift This blog post explains the process of creating and filling PDF forms programmatically in Swift.

TUTORIALS  |  Android • Kotlin • Security • Signing • PDF • How To Digital Signing on Android How digital signing and contained signatures on Android work.

2020

TUTORIALS  |  JavaScript • PDF • How To • UI/UX • Forms Using JavaScript in PDF Form Fields Learn the basics of working with JavaScript Form Elements in a PDF.

TUTORIALS  |  PDF • .NET • How To • Redaction How to Combine OCR with Redaction in .NET A guide on how to use OCR to redact text in a scanned document using the PSPDFKit .NET Library.

TUTORIALS  |  PDF • Java • How To • Redaction How to Combine OCR with Redaction in Java An introduction to combining the new OCR and Redaction features in the PSPDFKit Java Library to automatically redact text in a scanned document.

TUTORIALS  |  iOS • Swift • PDF • How To Convert a PDF to an Image in Swift This blog post explains how to convert your PDF file to an image using Core Graphics, PDFKit, and PSPDFKit.

DEVELOPMENT  |  PDF.js • PDF • Insights Evaluating the Render Fidelity of PDF.js We explore various issues with the render fidelity of PDF.js.

TUTORIALS  |  Server • How To • PDF • Node.js • Annotations Creating Invoices with PSPDFKit Server - Part 2 A look at how to generate a template we previously created using PSPDFKit Server.

TUTORIALS  |  Server • How To • PDF • Node.js • Annotations Creating Invoices with PSPDFKit Server - Part 1 A look into how we can leverage the concept of layers in PSPDFKit Server to create an invoice template.

TUTORIALS  |  PDF • Windows • How To How to Merge Two or More PDFs on Windows Learn how to merge PDFs on Windows the simple way — with code examples, explanations, and extra features.

DEVELOPMENT  |  iOS • macOS • PDF • Insights Why Is the PDF Format So Well Supported on Apple Platforms? Apple has a rich history of supporting the PDF file format, but when and how did its relationship with the PDF format begin?

PRODUCTS  |  PDF • Signing • UI/UX Transparent PNG Support Images with transparency (PNG alpha support) offer new possibilities for annotating documents across all platforms.

DEVELOPMENT  |  Web • PDF How We Created a Real-Time Collaboration Tool Inside a PDF This blog post takes a peek under the proverbial PDF hood to find out how we developed Instant Comments.

TUTORIALS  |  .NET • PDF • How To How to Split a PDF in .NET Learn how to split a PDF into two or more distinct PDFs.

TUTORIALS  |  PDF • How To • Web • Forms Creating a PDF Form with Signature Form Fields We explain how to create a signable PDF AcroForm with PSPDFKit and Adobe Acrobat.

TUTORIALS  |  .NET • C# • PDF • How To Working with PDFs in ASP.NET Have you ever wanted to work with PDFs in ASP.NET? Find out how.

TUTORIALS  |  PDF • Java • How To • Forms How to Fill Out PDF Forms in Java Learn how to fill out form fields in a PDF in Java.

TUTORIALS  |  PDF • .NET • How To • Forms PDF Form Filling and Reading in .NET PDF forms are an ideal way to collect information. Learn how to read and fill out forms programmatically in .NET.

TUTORIALS  |  Java • Kotlin • PDF • How To How to Merge Two or More PDFs into a Single PDF Using Java (or Kotlin) Learn how to merge multiple PDFs in Java (or Kotlin) the simple way — with code examples, explanations, and extra features.

DEVELOPMENT  |  PDF • Tips • Insights Optimizing PDF File Size When editing PDFs, they often grow in size, but that doesn't have to be the case. Here's how we optionally optimize for size.

TUTORIALS  |  PDF • Java • How To Data-Driven Redaction in Java Redacting PDF contents based on variable input data.

TUTORIALS  |  PDF • .NET • How To Redact Personal Information from a PDF in .NET We have a lot of sensitive information in documents, and here's how can we get rid of it for good!

TUTORIALS  |  Android • Kotlin • PDF • How To Inserting an Image into a PDF on Android We provide a step-by-step explanation of how to insert an image into a PDF on Android.

TUTORIALS  |  iOS • Swift • Objective-C • PDF • How To How to Add Attribution to PDFs with PSPDFKit for iOS Learn how to include attribution when sharing the contents of a PDF.

2019

TUTORIALS  |  PDF • .NET • How To How to Merge Two or More PDFs in .NET Learn how to merge PDFs in .NET the simple way — with code examples, explanations, and extra features.

TUTORIALS  |  Web • PDF.js • JavaScript • PDF • How To Creating a Web Component with PDF.js Taking advantage of native platform features to create a reusable component that can show a PDF.

TUTORIALS  |  Android • PDF • How To Convert a PDF to an Image on Android This article explains how to render your PDF files to images using both Android's built-in PDF libraries and PSPDFKit.

TUTORIALS  |  Android • Kotlin • PDF • How To Add a Watermark to a PDF on Android How to add a watermark to a PDF on Android.

TUTORIALS  |  Android • Kotlin • PDF • How To Merge PDF Documents on Android We'll take a look at two ways to merge PDF documents on Android.

PRODUCTS  |  PDF • JavaScript PDF Features for Writing and Sharing Scientific Research PSPDFKit can help you carry out scientific research with features like annotation replies, digital signatures, and JavaScript.

DEVELOPMENT  |  Android • iOS • Web • PDF The Role of PSPDFKit as a PDF Processor How we fit into the PDF landscape.

TUTORIALS  |  Windows • C# • PDF • How To Add a Watermark to a PDF in UWP How to add a watermark to a PDF on UWP.

PRODUCTS  |  PDF • Redaction Removing Sensitive Information from a PDF This article explains different forms of redaction and discusses different methods used to redact a PDF document.

BLOG  |  PDF Repairing PDF Files A blog post about some repairs PDF viewers make when processing documents.

PRODUCTS  |  Security • PDF • Signing Electronic Signatures in a PDF Understand the differences between ink electronic signatures and certificate-based digital signatures when designing your screen flow, function, and backend.

TUTORIALS  |  iOS • Swift • Objective-C • PDF • How To Is My Document a Valid PDF? This article looks at multiple factors used to determine the validity of a PDF.

DEVELOPMENT  |  iOS • Swift • PDF • Tips Working with PDF Metadata in Swift How and what metadata can be stored in a PDF, and how to programmatically work with this information.

TUTORIALS  |  Android • Kotlin • PDF • How To Open a PDF in an Android App This article presents existing free or open source libraries for opening PDF files in Android apps.

TUTORIALS  |  Web • JavaScript • PDF • How To Add a Watermark to a PDF on the Web How to add a watermark to a PDF on the web.

TUTORIALS  |  iOS • Swift • PDF • How To • SwiftUI How to Show a PDF in SwiftUI How to show a PDF using SwiftUI, Apple's PDFKit, and PSPDFKit for iOS.

TUTORIALS  |  iOS • Swift • PDF • How To Merge PDFs in Swift How to merge multiple PDF files in Swift.

TUTORIALS  |  iOS • Swift • Objective-C • PDF • How To • Security Secure Documents with PSPDFKit for iOS How to secure documents using PSPDFKit for iOS.

DEVELOPMENT  |  PDF • Insights Understanding the Difference between Bookmarks and the Outline in a PDF Bookmarks vs. outline elements: Not everything is what it seems.

TUTORIALS  |  Web • Node.js • JavaScript • PDF • How To Generate PDF Invoices with PDFKit on Node.js Learn how to use the PDFKit JavaScript SDK to generate invoices for your web app.

TUTORIALS  |  PDF • How To • Performance • Forms Tips for Creating a Maintainable and Fast PDF Form This article offers some tips for creating a PDF form so that the document is maintainable and performs well in PDF viewers.

DEVELOPMENT  |  Web • Docker • PDF Preparing My Tax Return with Apache PDFBox, Docker, and Make How I combined Apache PDFBox, Docker, and Make to streamline my tax return workflow.

DEVELOPMENT  |  Android • iOS • Windows • PDF • Tips • Insights Incremental and Full Save in PDFs This article goes into what's involved when incrementally or fully saving a PDF, and why it matters.

PRODUCTS  |  Productivity • PDF Making Notes on a PDF Document This post highlights the tools and features within a PDF that help with marking and making notes in a document.

2018

DEVELOPMENT  |  Web • Ruby • PDF Generating PDFs with Ruby: 2018 Edition This post surveys the Ruby landscape in 2018 to evaluate the current state-of-the-art of generating PDFs with Ruby.

DEVELOPMENT  |  PDF Understanding Images in PDF We take a look at how images are stored in a PDF and discuss some important things to know about them.

DEVELOPMENT  |  Elixir • How To • PDF How to Generate PDFs with Elixir In this blog post, we'll look at an example of how to generate PDFs with Elixir.

TUTORIALS  |  How To • PDF • PDF Viewer Using PDF Viewer to Review Documents Did you know that PDF Viewer offers everything you need for reviewing documents? In this article, you'll learn how you can use PSPDFKit's markup tools to make editing suggestions to the author of an article.

DEVELOPMENT  |  PDF PDF Syntax 101 An overview of the internal structure of a PDF.

DEVELOPMENT  |  PDF • Insights What’s Hiding in Your PDF? PDFs hold information you may not know about. Discover different forms of metadata and where to look for them.

TUTORIALS  |  iOS • JavaScript • How To • PDF How to Program a Calculator in a PDF PDF supports JavaScript, and you can use this functionality to program small applications inside a document.

DEVELOPMENT  |  PDF • Signing • Security Protecting PDF Documents Password-based security for PDF documents.

TUTORIALS  |  iOS • How To • PDF Generate On-Device PDF Reports on iOS How to generate on-device PDF reports without using an internet connection.

TUTORIALS  |  Android • Kotlin • How To • PDF Ways to Create a PDF on Android We look at the different ways of creating a PDF on Android.

DEVELOPMENT  |  PDF • Annotations Line Annotations in PDF Line annotations are one of the most frequently used annotation types, and they are ideal for things like drawing attention to important areas of your document, diagramming the process flow, and decoration.

TUTORIALS  |  macOS • Swift • How To • PDF Exporting Images from PDF with PSPDFKit for macOS We'll look at how a simple Swift script and PSPDFKit for macOS can be used to export image assets for your website or app from a vector PDF graphic, using an iOS app icon as an example.

DEVELOPMENT  |  PDF • Insights What Are Appearance Streams? An explanation of what appearance streams actually are, along with their gotchas.

TUTORIALS  |  Web • PDF.js • How To • PDF Rendering PDF Files in the Browser with PDF.js A quick overview of how to use PDF.js, created by Mozilla, to show PDFs on your webpage.

PRODUCTS  |  PDF • Insights Searching PDFs Searching PDFS and how we help you handle edge cases and avoid common pitfalls.

DEVELOPMENT  |  PDF • Tips • Forms Forms in PDF Forms provide a simple yet flexible way to gather data from users.

TUTORIALS  |  iOS • Swift • How To • PDF Ways to Create a PDF on iOS We look at the different ways of creating a PDF on iOS.

TUTORIALS  |  React Native • How To • PDF Opening a PDF in React Native A tutorial on how to open a PDF in React Native.

PRODUCTS  |  Security • Signing • PDF What PDF Digital Signatures Are and Why They Are Important Why protecting PDF documents with a digital signature is important and how PSPDFKit signs and validates a document.

DEVELOPMENT  |  PDF • Insights • Annotations What Are Annotations? Annotations allow users to add custom content on PDF pages.

DEVELOPMENT  |  PDF Extracting Text from a PDF The difficulties of extracting text from a PDF and how PSPDFKit can help.

2017

TUTORIALS  |  Web • JavaScript • PDF • How To How to Add PDF Support to Your Web App in No Time A step-by-step tutorial on how to display and annotate PDF files inside your web app using the PSPDFKit JavaScript library.

2016

DEVELOPMENT  |  PDF • Debugging • Insights Just a simple bookmark When books became digital, bookmarks became more complicated. Instead of stuffing a piece of paper in a book, you now had to store a digital marker, which is not always as simple as it looks.