Inside PSPDFKit

Canvas and Shaders, if used wisely, can simplify your life and help you achieve wonderful UI effects and animations.

Today we're excited to release PSPDFKit 6.7 for iOS! This version includes a new page grabber UI control, file coordination support, document progress indication and various...

Lottie is a fairly new library that enables rendering After Effects animations in real time in your apps, available for iOS (and macOS), Android and React...

With the release of PSPDFKit for Web 2017.3, among other improvements, we added more public CSS classes. The CSS classes of PSPDFKit for Web get obfuscated...

Another month, another version of PSPDFKit for iOS! Version 6.6 features significantly improved Right-to-Left support, enhanced annotation drawing, better fine-grained control of line thickness for annotations,...

One of the reasons I love Kotlin is its expressiveness compared to Java. In Kotlin, you can implement much more logic with fewer characters, making Java...

At PSPDFKit, we make the most advanced PDF SDKs for mobile and desktop. We released PSPDFKit for Web in December and are working hard to bring...

Introducing PSPDFKit 6.5 for iOS! This release includes first-class Apple Pencil support, 3D Touch features, a completely rewritten and improved forms parser, UI improvements as well...

This is a story about a crash, caused by a bug inside the Android hardware accelerated view drawing. And a story about a team of developers...

Introducing PSPDFKit 6.4 for iOS. This release includes support for Right-to-Left languages such as Arabic, a custom image editor, the ability to use FTS 5, Swift...

Extensions are becoming more and more important on iOS. At PSPDFKit we believe it is important to be a good citizen and to integrate with the...

UITableView is a cornerstone of classical iOS development and one of the oldest classes. It's used in pretty much all iOS apps and has been around...

With our latest PDF Viewer update, 1.5, we are not only adding Spotlight search, 3D Touch gestures, Wi-Fi Drive, a lot of bug fixes, and improvements,...

At PSPDFKit we continue to grow our product range, working hard to add new and improve existing features, all while handling the countless special cases that...

Introducing PSPDFKit 6.3 for iOS. This release includes PSPDF Instant compatibility, new languages and various UI improvements. Read up on our changelog to get more information...

At PSPDFKit we're currently using 20 Mac minis to run our continuous integration. Manually setting up these machines is a very time consuming and error prone...

Developers received a much higher level of integration in iOS 8 thanks to app extensions. Among these, Share and Action extensions are quite popular, since they...

Announcing PSPDFKit 6.2 for iOS. This release includes various new customization options, performance and rendering improvements, and many, many details. Take a look at our changelog...

More often than necessary, screenshots and videos of Android apps suffer from showing an untidy status bar with unwanted notification icons, a drained battery indicator, and...

We are proud to announce the immediate availability of PSPDFKit 6.1 for iOS. This release focused heavily on fixing a lot of edge cases that were...

State restoration is an important part of the Android framework, but, when implementing some MVP architecture, we can hit some problems. Specifically, making presenter aware of...

Clang has powerful sanitizers that help you find bugs faster, fix them with more confidence, and find all these impossible-to-reproduce race conditions. These tools are extremely...

Animating objects in Android is seemingly easy, especially using ViewPropertyAnimator which provides out-of-the-box solutions and easy-to-construct view property animations. Add RxJava to the mix and you...

React Native enables you to build native mobile apps using a consistent developer experience based on JavaScript and React. It’s built by Facebook and already used...

When debugging an issue that is somewhere deep inside your code, you easily end up debugging a class that has lots of living instances. Sometimes, you...

Today we're releasing PSPDFKit 6 for iOS. It's fully optimized for Xcode 8 and iOS 10, comes with improved API for Swift 3, faster rendering, various...

At PSPDFKit, we provide an SDK to display and annotate PDFs, for other people to integrate into their apps. There is a large set of API...

Competition in the App Store has grown to be extremely fierce, so unless you’re inventing a whole new market, you are unlikely to succeed with an...

Since the inception of longform text, readers found that they needed to somehow mark their progress and interesting passages as they read. Marking your position in...

It's easy to overlook some of our most basic developer actions, because we do them so frequently. However, with the continuous development and increase in the...

Pages on iOS 9 shows an activity view controller in a way we can’t reproduce, and UIKit’s behavior when presenting action sheets and activity view controllers from...

Few apps have the luxury to support only the most recent version of iOS. It's often necessary to set a lower deployment target and branch in...

UIImage is one of the most important classes in UIKit. When compared to browsers, image handling on iOS is still quite tricky. Loading even a medium-sized...

Silently corrupting user data is commonly regarded as The Worst Thing You Can Do™ (TWTYCD). Following my personal mantra, “schlimmer geht’s immer” (loosely translates to “there’s...

Here at PSPDFKit, we love testing. With the growing diversity of products on our roadmap, there's no shortage in the variety of testing approaches we employ...

Objective-C originates from the early 1980s, and while the language has evolved a lot over the years, it's still no match for really modern languages like...

PSPDFKit used to be an iOS-only framework and testing pull requests was easy. The Jenkins plugin ghprb (short for “GitHub Pull Request Builder”) started the iOS...

We at PSPDFKit are big believers in automated testing. Unit tests, UI automation tests, snapshot tests, you name it, we do it all. Whenever you are...

Working with a soft keyboard on Android can be confusing. While implementing free-text annotation editing into the PSPDFKit for Android framework, we felt this way many...

You might think the UI for a PDF viewer/editor would be trivial, however it’s anything but. At PSPDFKit we have a ton of simple and complex...

At PSPDFKit, we use Jazzy to generate our great-looking iOS API docs. Jazzy is an Objective-C/Swift documentation generator built by the team at Realm. Jazzy uses...

Our Android guides for PSPDFKit received a large update – now with Kotlin usage examples

At PSPDFKit we offer native SDKs for iOS, Android and soon also for the browser. Yet, invisible to the user, all share a large part of...

Last week as we prepared to ship our new Document Editor, we discovered a blocker: sometimes the app froze after rotating the device. The user interface...

tl;dr: Swift extensions on Objective-C classes still need to be prefixed. You can use @objc(prefix_name) to keep the name pretty in Swift and expose a prefixed...

Having been designed for comparatively slow mobile devices, both iOS and Android expose highly optimized development APIs. In some cases this can lead to confusing behaviour,...

iOS 8 introduced the UIPresentationController class to manage and customize view controller presentations in a reusable manner. This came with adaptive presentations: adjusting the way a...

At PSPDFKit we work with a very large codebase: over 600k lines and growing. Of course we aim to write compact, efficient code — but the...