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2021

Illustration: Tackling PDF Performance Issues DEVELOPMENT  |  PDF • C++ Tackling PDF Performance Issues Digging into the internals of PSPDFKit to improve PDF performance.
Illustration: Creating and Filling Forms Programmatically in Swift TUTORIALS  |  iOS • Development • How To • PDF • Swift Creating and Filling Forms Programmatically in Swift This blog post explains the process of creating and filling PDF forms programmatically in Swift.
Illustration: Stop Wasting Bandwidth with PDFs — Transfer Changes with Instant JSON DEVELOPMENT  |  PDF • Development • How To • .NET • Java Stop Wasting Bandwidth with PDFs — Transfer Changes with Instant JSON PDFs can be large, and sending only the changes can dramatically reduce the amount of bandwidth used.
Illustration: Digital Signing on Android TUTORIALS  |  Android • Development • How To • Security • PDF Digital Signing on Android How digital signing and contained signatures on Android work.

2020

Illustration: Using JavaScript in PDF Form Fields TUTORIALS  |  Development • How To • PDF • JavaScript Using JavaScript in PDF Form Fields Learn the basics of working with JavaScript Form Elements in a PDF.
Illustration: How to Combine OCR with Redaction in .NET TUTORIALS  |  PDF • Development • How To • .NET 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.
Illustration: How to Combine OCR with Redaction in Java TUTORIALS  |  PDF • Development • How To • Java 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.
Illustration: Convert a PDF to an Image in Swift TUTORIALS  |  iOS • Development • How To • PDF • Swift 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.
Illustration: Evaluating the Render Fidelity of PDF.js DEVELOPMENT  |  PDF • Development Evaluating the Render Fidelity of PDF.js We explore various issues with the render fidelity of PDF.js.
Illustration: Creating Invoices with PSPDFKit Server — Part 2 TUTORIALS  |  Server • How To • PDF • Node.js Creating Invoices with PSPDFKit Server — Part 2 A look at how to generate a template we previously created using PSPDFKit Server.
Illustration: Creating Invoices with PSPDFKit Server — Part 1 TUTORIALS  |  Server • How To • PDF • Node.js 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.
Illustration: How to Merge Two or More PDFs on Windows 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.
Illustration: Why Is the PDF Format So Well Supported on Apple Platforms? DEVELOPMENT  |  iOS • Development • PDF 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?
Illustration: How We Created a Real-Time Collaboration Tool Inside a PDF DEVELOPMENT  |  Web • PDF • Products 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.
Illustration: How to Split a PDF in .NET TUTORIALS  |  PDF • Development • How To • .NET How to Split a PDF in .NET Learn how to split a PDF into two or more distinct PDFs.
Illustration: Creating a PDF Form with Signature Form Fields TUTORIALS  |  PDF • Products • How To • Web Creating a PDF Form with Signature Form Fields We explain how to create a signable PDF AcroForm with PSPDFKit and Adobe Acrobat.
Illustration: Working with PDFs in ASP.NET TUTORIALS  |  PDF • Development • How To • .NET Working with PDFs in ASP.NET Have you ever wanted to work with PDFs in ASP.NET? Find out how.
Illustration: How to Fill Out PDF Forms in Java TUTORIALS  |  PDF • Development • How To • Java How to Fill Out PDF Forms in Java Learn how to fill out form fields in a PDF in Java.
Illustration: PDF Form Filling and Reading in .NET TUTORIALS  |  PDF • Development • How To • .NET 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.
Illustration: How to Merge Two or More PDFs in Java (or Kotlin) TUTORIALS  |  PDF • Development • How To • Java How to Merge Two or More PDFs in Java (or Kotlin) Learn how to merge PDFs in Java (or Kotlin) the simple way — with code examples, explanations, and extra features.
Illustration: Optimizing PDF File Size TUTORIALS  |  Development • PDF 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.
Illustration: Data-Driven Redaction in Java TUTORIALS  |  PDF • Java • How To Data-Driven Redaction in Java Redacting PDF contents based on variable input data.
Illustration: Our Approach to Testing a Large-Scale C++ Codebase DEVELOPMENT  |  Development • PDF • Testing • C++ Our Approach to Testing a Large-Scale C++ Codebase This blog post outlines the frameworks and techniques PSPDFKit uses to test its large-scale C++ codebase.
Illustration: Redact Personal Information from a PDF in .NET 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!
Illustration: How to Add Attribution to PDFs with PSPDFKit for iOS TUTORIALS  |  iOS • Development • How To • PDF How to Add Attribution to PDFs with PSPDFKit for iOS Learn how to include attribution when sharing the contents of a PDF.

2019

Illustration: How to Merge Two or More PDFs in .NET BLOG  |  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.
Illustration: Creating a Web Component with PDF.js BLOG  |  Web • Development • How To • PDF • JavaScript Creating a Web Component with PDF.js Taking advantage of native platform features to create a reusable component that can show a PDF.
Illustration: Convert a PDF to an Image on Android BLOG  |  Android • Development • How To • PDF 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.
Illustration: Add a Watermark to a PDF on Android BLOG  |  Android • Development • PDF • How To Add a Watermark to a PDF on Android How to add a watermark to a PDF on Android.
Illustration: Merge PDF Documents on Android BLOG  |  Android • Development • How To • PDF • Kotlin Merge PDF Documents on Android We'll take a look at two ways to merge PDF documents on Android.
Illustration: PDF Features for Writing and Sharing Scientific Research BLOG  |  PDF • Digital Signatures • Annotation Replies • 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.
Illustration: The Role of PSPDFKit as a PDF Processor BLOG  |  PDF • Development The Role of PSPDFKit as a PDF Processor How we fit into the PDF landscape.
Illustration: Removing Sensitive Information from a PDF BLOG  |  PDF • Product • Redaction Removing Sensitive Information from a PDF This article explains different forms of redaction and discusses different methods used to redact a PDF document.
Illustration: Repairing PDF Files BLOG  |  PDF Repairing PDF Files A blog post about some repairs PDF viewers make when processing documents.
Illustration: Electronic Signatures in a PDF BLOG  |  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.
Illustration: Is My Document a Valid PDF? BLOG  |  iOS • Swift • Objective-C • PDF • Development Is My Document a Valid PDF? This article looks at multiple factors used to determine the validity of a PDF.
Illustration: Open a PDF in an Android App BLOG  |  Android • Development • How To • PDF Open a PDF in an Android App This article presents existing free or open source libraries for opening PDF files in Android apps.
Illustration: How to Show a PDF in SwiftUI BLOG  |  iOS • Development • How To • Swift • PDF How to Show a PDF in SwiftUI How to show a PDF using SwiftUI, Apple's PDFKit, and PSPDFKit for iOS.
Illustration: Merge PDFs in Swift BLOG  |  iOS • Development • How To • PDF • Swift Merge PDFs in Swift How to merge multiple PDF files in Swift.
Illustration: Secure Documents with PSPDFKit for iOS BLOG  |  iOS • Development • How To • Security • PDF Secure Documents with PSPDFKit for iOS How to secure documents using PSPDFKit for iOS.
Illustration: Understanding the Difference between Bookmarks and the Outline in a PDF BLOG  |  PDF Understanding the Difference between Bookmarks and the Outline in a PDF Bookmarks vs. outline elements: Not everything is what it seems.
Illustration: Generate Invoices with PDFKit on Node.js BLOG  |  Web • Development • How To • PDF • Node.js Generate Invoices with PDFKit on Node.js Learn how to use the PDFKit JavaScript SDK to generate invoices for your web app.
Illustration: Tips for Creating a Maintainable and Fast PDF Form BLOG  |  Development • How To • PDF • 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.
Illustration: Preparing My Tax Return with Apache PDFBox, Docker, and Make BLOG  |  Web • 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.
Illustration: Incremental and Full Save in PDFs BLOG  |  Development • PDF Incremental and Full Save in PDFs This article goes into what's involved when incrementally or fully saving a PDF, and why it matters.

2018

Illustration: How to Generate PDFs with Elixir BLOG  |  Development • How To • Elixir • PDF How to Generate PDFs with Elixir In this blog post, we'll look at an example of how to generate PDFs with Elixir.
Illustration: What’s Hiding in Your PDF? BLOG  |  PDF 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.
Illustration: How to Program a Calculator in a PDF BLOG  |  iOS • Development • How To • PDF • JavaScript How to Program a Calculator in a PDF PDF supports JavaScript, and you can use this functionality to program small applications inside a document.
Illustration: Generate On-Device PDF Reports on iOS BLOG  |  iOS • Development • How To • PDF Generate On-Device PDF Reports on iOS How to generate on-device PDF reports without using an internet connection.
Illustration: Line Annotations in PDF BLOG  |  Android • iOS • Web • PDF • Annotations • Lines • Arrows • Development 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.
Illustration: Searching PDFs BLOG  |  Development • PDF • Android • iOS • Viewer Searching PDFs Searching PDFS and how we help you handle edge cases and avoid common pitfalls.
Illustration: Forms in PDF BLOG  |  Development • PDF • Forms Forms in PDF Forms provide a simple yet flexible way to gather data from users.
Illustration: Rendering PDFs on Android BLOG  |  Android • Development • PDF • Rendering • Performance • UI • UX Rendering PDFs on Android How to handle rendering large amounts of bitmaps and maintain a slick UX while doing it.
Illustration: What PDF Digital Signatures Are and Why They Are Important BLOG  |  Products • Development • Security • 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.
Illustration: What Are Annotations? BLOG  |  Development • PDF • Annotations What Are Annotations? Annotations allow users to add custom content on PDF pages.