Archive

2022

DEVELOPMENT  |  iOS • Swift • Tips Adding a Document Viewer to a Mac Catalyst App We discuss how a PDF document viewer can be added to a Mac Catalyst app using the PSPDFKit SDK.

PRODUCTS  |  iOS • Mac Catalyst • Releases PSPDFKit 11.5 for iOS Adds Measurement Tools This update includes our new Measurement Tools component and refreshes the appearance of some key elements in our user interface.

PRODUCTS  |  iOS • Android • Releases • Components Measurement Tools — Measure Distance, Perimeter, and Area in PDFs Measure distance and area on your blueprints and floor plans with PSPDFKit's new measurement tools.

DEVELOPMENT  |  iOS • Insights • Xcode Download Failures with Swift Package Manager Binary Targets A tale of how reading an error message more carefully allowed us to work around an issue with our tooling.

DEVELOPMENT  |  iOS • Swift • UI/UX • Insights Replicating the iOS Text Magnifying Glass A dive into details of how we replicated the system magnifying glass on iOS.

DEVELOPMENT  |  iOS • Swift • SwiftUI • Insights Our Attempt at Rewriting PSPDFKit Catalog in SwiftUI We tried rewriting a part of our PSPDFKit Catalog example project in SwiftUI. Here's what we learned.

PRODUCTS  |  iOS • Mac Catalyst • Releases PSPDFKit 11.4 for iOS Adds Electronic Signature Customizations PSPDFKit 11.4 for iOS adds more customization options to Electronic Signatures and sunsets support for iOS 13.

DEVELOPMENT  |  Android • iOS • Cordova • Flutter • Ionic • React Native • Xamarin Cross-Platform Mobile Frameworks — An iOS Engineer's Perspective What I learned while working on cross-platform mobile frameworks.

PRODUCTS  |  iOS • Mac Catalyst • Releases PSPDFKit 11.3 for iOS Adds Cloud Annotation Tool PSPDFKit 11.3 for iOS adds a dedicated tool to create cloud annotations, improves the performance of ink annotations, and adds Swift Package Manager support for PDFXKit.

DEVELOPMENT  |  iOS • SwiftUI • Tips Presenting Popovers on iPhone with SwiftUI How to present the UI as popovers on iPhone when using SwiftUI.

TUTORIALS  |  Flutter • Android • iOS • How To How to Download and Display a PDF Document in Flutter with PSPDFKit A tutorial explaining how to download and display a PDF document in Flutter using PSPDFKit.

PRODUCTS  |  iOS • Mac Catalyst • Releases PSPDFKit 11.2 for iOS Adds Instant Collaboration Permissions We’re excited to announce the addition of Instant Collaboration Permissions and the return of the text magnifying glass with PSPDFKit 11.2 for iOS.

2021

BLOG  |  iOS • Tips Loading Images on iOS 15 We discuss the new iOS 15 APIs provided by UIKit for loading and displaying images and the SwiftUI APIs for loading an image from a remote URL.

DEVELOPMENT  |  iOS • Insights Understanding Fast-Math What does the -ffast-math optimization really do, and when is it safe to use it?

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.

PRODUCTS  |  iOS • Instant • Insights Using Instant Layers for Onsite Visits We talk about how the layers feature of Instant can be used for construction site visits.

DEVELOPMENT  |  iOS • Swift • Tips Fitting Text into a Bounding Frame on iOS How to use a binary search algorithm to precisely fit multiline text into a bounding frame on iOS.

DEVELOPMENT  |  iOS • Insights • Xcode What Is a Deprecated API on iOS? A look at Apple's API evolution strategy and the effect of the deployment target and base SDK Xcode project settings.

PRODUCTS  |  iOS • Mac Catalyst • Releases PSPDFKit 11.1 for iOS Enhances Document Comparison PSPDFKit 11.1 for iOS adds support for macOS 12 Monterey and manual alignment to the Document Comparison workflow.

PRODUCTS  |  iOS • Mac Catalyst • Releases PSPDFKit 11 for iOS 15 PSPDFKit 11 for iOS adds support for Apple's new operating system version.

DEVELOPMENT  |  iOS • Swift • Testing • Tips Swift Render Tests in Practice — Part III How to automate regenerating and updating reference images for render tests.

DEVELOPMENT  |  iOS • Swift • Testing • Tips Swift Render Tests in Practice - Part II How to improve test failures with attachments and grouping related test output.

DEVELOPMENT  |  iOS • Swift • Testing • Tips Swift Render Tests in Practice - Part I How to pragmatically approach render testing for custom drawing code.

DEVELOPMENT  |  iOS • Objective-C • Debugging • Insights Reverse Engineering UIKit to Fix Our Top Crash This blog post describes the process of reverse engineering UIKit to identify and fix our top crash in PSPDFKit for iOS.

DEVELOPMENT  |  iOS • Testing • Xcode Automating Test Retries We walk through our experience of dealing with flaky tests by automatically retrying them.

DEVELOPMENT  |  iOS • Swift • Tips • Debugging Debugging Image Loading and Cropping Performance on iOS We talk about using the Image I/O and Core Graphics APIs to improve the image loading and cropping performance in the PSPDFKit iOS SDK.

PRODUCTS  |  iOS • Mac Catalyst • Releases PSPDFKit 10.5 for iOS Adds Instant Document Permissions PSPDFKit 10.5 for iOS adds Instant document permissions, redesigned getting started guides, and preliminary compatibility with iOS 15.

TUTORIALS  |  Android • iOS • React Native • JavaScript • How To How to Open a PDF in React Native Using the Document Picker A video tutorial about how to open a PDF in React Native using the document browser.

DEVELOPMENT  |  iOS • Productivity • How To Automating Mac Catalyst Distribution with fastlane We recently automated PDF Viewer for Mac distribution via fastlane. Here’s how you can do the same for your Mac Catalyst app.

PRODUCTS  |  iOS • Mac Catalyst • Releases PSPDFKit 10.4 for iOS Introduces an Overhauled Undo Architecture PSPDFKit 10.4 for iOS with an overhauled undo architecture, new examples, and TIFF support for image documents.

TUTORIALS  |  iOS • Swift • How To • Annotations Adding Annotations in Swift with PDFKit vs. PSPDFKit A post that compares adding annotations in Apple's PDFKit and PSPDFKit.

DEVELOPMENT  |  SwiftUI • iOS SwiftUI In Production We recently shipped a major new feature in SwiftUI while still supporting iOS 12 in our SDK. Here's what we learned.

PRODUCTS  |  iOS • Mac Catalyst • Releases PSPDFKit 10.3 for iOS Adds Electronic Signatures and Instant Comments PSPDFKit 10.3 for iOS adds Electronic Signatures and Instant Comments, improves support for Mac Catalyst, and much more.

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.

DEVELOPMENT  |  iOS • Swift • Tips Streams of Cocoa: Why It's Still Worth Knowing NSStream In this post, we'll look at a piece of API that many people rarely touch, if ever: Stream. It’s neither new nor shiny, but it's a powerful tool when you know how to use it.

DEVELOPMENT  |  iOS • macOS • Insights Advances in XCFrameworks With Xcode 12, Apple improved the XCFramework format, which unlocks great new capabilities.

DEVELOPMENT  |  iOS • Swift • Objective-C • Xcode • Testing Deflaking CI Tests with xcresults We’re sharing some techniques for tracking down and fixing flaky Xcode tests on CI.

DEVELOPMENT  |  iOS • Swift • Tips • SwiftUI • UI/UX • Accessibility Keyboard Navigation in SwiftUI SwiftUI wasn’t built with keyboard support in mind, and it shows. Learn how you can rewrite keyboardShortcut to work with iOS 13 and access the underlying navigation controller to pop views on ⌘-Left Arrow.

SOLUTIONS  |  iOS • macOS • Tips PSPDFKit for Magazines How to configure PSPDFKit for a magazine.

TUTORIALS  |  iOS • Swift • How To • SwiftUI Using the Document Browser in SwiftUI to Open a PDF With iOS 14, Apple made it incredibly easy to integrate the document browser into SwiftUI-powered apps.

SOLUTIONS  |  iOS • macOS • Tips PSPDFKit for Construction How to configure PSPDFKit to display a building floorplan.

SOLUTIONS  |  iOS • macOS • Tips PSPDFKit for E-Readers How to configure PSPDFKit for an e-reader app.

TUTORIALS  |  iOS • Flutter • Objective-C • How To How to Bridge Native PSPDFKit for iOS Code to Flutter A tutorial about how to bridge native PSPDFKit iOS code to Flutter.

SOLUTIONS  |  iOS • macOS • Tips PSPDFKit for E-Learning How PSPDFKit can be configured for taking and grading an e-learning exam.

DEVELOPMENT  |  iOS • Swift • SwiftUI • Tips Using the SwiftUI ColorPicker on iOS and macOS While macOS has offered a system-provided color picker since OS X 10.0 Cheetah, iOS developers had to wait a bit longer. Let's take a closer look at the new ColorPicker (SwiftUI) and UIColorPickerViewController (UIKit) controls.

SOLUTIONS  |  iOS • macOS • Tips PSPDFKit for Board Meetings How PSPDFKit can be used to create or join a collaborative editing session for a board meeting.

DEVELOPMENT  |  iOS • Testing Continuous Integration: From Jenkins to Buildkite Learn why we moved from Jenkins to Buildkite, what the current most promising services are, and how we evaluated them.

SOLUTIONS  |  iOS • macOS • Tips PSPDFKit for Aviation How to configure PSPDFKit to display a flight manual and passenger list documents.

PRODUCTS  |  iOS • Mac Catalyst • Releases PSPDFKit 10.2 for iOS Adds New Examples on GitHub PSPDFKit 10.2 for iOS adds new examples on GitHub, seamless document downloading, performance improvements, and more.

DEVELOPMENT  |  iOS • Testing Automating macOS Provisioning with Chef Learn how to use Chef to automatically provision macOS machines for CI: infrastructure as code

TUTORIALS  |  iOS • Swift • How To How to Unlock PDF Functionality with OCR in iOS This blog post covers how to integrate OCR functionality in iOS, perform OCR, and leverage functionality such as extraction, selection, highlight, and search.

2020

DEVELOPMENT  |  iOS • Testing Managing macOS Hardware: Virtualization or Bare Metal? We explore the different ways to run macOS in the cloud, comparing virtualization via VMware, Anka, and Orka with running a fleet of bare metal machines on Amazon or MacStadium.

DEVELOPMENT  |  iOS • Testing Continuous Integration for Small iOS/macOS Teams In this new series, we're sharing our approach to macOS continuous integration for smaller teams that can't dedicate an entire team to CI management or aren't willing to invest five-figure sums per year for their setup.

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.

PRODUCTS  |  iOS • Mac Catalyst • Releases PSPDFKit 10.1 Takes SwiftUI to the Next Level PSPDFKit 10.1 for iOS adds support for macOS Big Sur and Apple Silicon, and it improves SwiftUI integration options and Scribble interactions.

DEVELOPMENT  |  iOS • Swift • Tips Caching File Downloads with URLCache in Swift Apple has a sophisticated caching system in iOS, which is enabled by default. However, documentation around URLCache is quite sparse. Today, we'll look at the behavior of caching when dealing with large files.

DEVELOPMENT  |  iOS • Swift • Tips • SwiftUI • UI/UX Presenting Popovers from SwiftUI Is there a way to present UIKit popovers from toolbar buttons managed by SwiftUI?

TUTORIALS  |  iOS • Swift • How To • UI/UX Extending the Scribble User Experience How to customize the default Scribble experience to allow users to start writing anywhere.

TUTORIALS  |  iOS • Swift • How To Adding Multimedia Content to a PDF as a Gallery This post is about the Gallery API in PSPDFKit for iOS that can be used to add interactive multimedia content to a PDF.

PRODUCTS  |  iOS • Mac Catalyst • Releases PSPDFKit 10 for iOS 14 PSPDFKit 10 for iOS adds support for Apple's new operating system, enables SwiftPM integration, and improves content accessibility.

DEVELOPMENT  |  iOS • Swift • Insights Binary Frameworks as Swift Packages What we learned from experimenting with binary frameworks as Swift packages in Xcode 12.

DEVELOPMENT  |  iOS • Swift • Performance Using Metal to Apply Image Filters An overview of how to use Metal to apply filters to images to perform a simple color inversion on the input image.

PRODUCTS  |  Android • iOS • Web • Java • .NET • Components Optical Character Recognition in Scanned PDFs An overview of how OCR can enhance scanned documents to speed up common operations. We explain what OCR is, why it's useful, and how it works.

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?

DEVELOPMENT  |  iOS • Swift • UI/UX • Insights The Case for Lists in UICollectionView Exploring the power and flexibility offered by creating lists using UICollectionView.

DEVELOPMENT  |  iOS • Swift • Debugging • Insights The Hidden Trap in Selective Table View and Collection View Reloads Learn how to properly update cells in a table view or collection view without crashing.

PRODUCTS  |  iOS • Mac Catalyst • Releases PSPDFKit for iOS Adds OCR PSPDFKit 9.5 for iOS introduces the new OCR component and a revamped touch handling system.

DEVELOPMENT  |  iOS • macOS • Objective-C • Performance • Insights Direct Calls with Objective-C Apple introduced the objc_direct attribute in Xcode 12. Learn what it does and how you can use it to your advantage.

DEVELOPMENT  |  iOS • macOS • Insights • Xcode Supporting XCFrameworks What we learned about XCFrameworks while migrating PSPDFKit to this new format.

PRODUCTS  |  iOS • Mac Catalyst • Releases PSPDFKit 9.4 for iOS Introducing PSPDFKit 9.4 for iOS, which features Office Files Support, a new Reader View component, package manager enhancements, and much more.

TUTORIALS  |  iOS • Swift • How To • Redaction Automatically Redact Faces with PSPDFKit for iOS This post describes how to use PSPDFKit for iOS and Core Image to perform facial redaction in PDF documents.

DEVELOPMENT  |  iOS • Swift • Objective-C • Insights NULL-Characters in Strings and Tales of Apple Radar In iOS 11, Smart Punctuation caused data loss. Learn how we fixed the issue and how we are now cleaning up the OS-level workaround.

DEVELOPMENT  |  iOS • Swift • Tips • UI/UX Level Up Your Trackpad Support Using UIInteraction How to make your iOS app work well with scrolling, secondary clicking and dragging on a trackpad or mouse.

TUTORIALS  |  iOS • Swift • Objective-C • UI/UX • Insights An In-Depth Look at Blur Effect Materials on iOS This blog post talks in detail about the blur effect materials on iOS and the challenges we faced in picking the appropriate effect for our SDK.

DEVELOPMENT  |  iOS • macOS • Tips • Performance • Xcode Automated Profiling Runs in Instruments Learn how to automate measurement runs with Instruments.

DEVELOPMENT  |  iOS • Objective-C • Tips Preventing Surprisingly Large Objective-C Type Encodings Objective-C stores type encoding in the binary. These encodings can become surprisingly large.

PRODUCTS  |  iOS • Mac Catalyst • Releases PSPDFKit 9.3 for iOS Introducing PSPDFKit 9.3 for iOS, which features refined Swift APIs, iPad cursor support, stricter adherence to PDF document permissions, and much more.

DEVELOPMENT  |  iOS • Swift • Tips • UI/UX • Insights Supporting Pointer Interactions Apple introduced new pointer events in iOS 13.4 to better support trackpad and mouse devices.

TUTORIALS  |  iOS • Web • Swift • React • How To • SwiftUI Introduction to SwiftUI for React Developers (Part 2) A discussion about the basic concepts of SwiftUI from the point of view of a React developer

TUTORIALS  |  iOS • Web • Swift • React • How To • SwiftUI Introduction to SwiftUI for React Developers (Part 1) A discussion of the basic concepts of SwiftUI from the point of view of a React developer.

TUTORIALS  |  iOS • React Native • Objective-C • How To How to Bridge Native iOS Code to React Native A video tutorial about how to bridge native iOS code to React Native.

PRODUCTS  |  iOS • Mac Catalyst • Releases PSPDFKit 9.2 for iOS Introducing PSPDFKit 9.2 for iOS — with updated UI text and additional Dark Mode and Mac Catalyst enhancements.

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.

DEVELOPMENT  |  iOS • Swift • Objective-C • Tips • UI/UX Adopting UIAppearance in Custom Views Learn how to support styling your own custom views using UIAppearance.

2019

DEVELOPMENT  |  iOS • Tips • UI/UX Open Links in Safari, Not Safari View Controller Why we changed our default for opening web links from SFSafariViewController to the Safari app.

PRODUCTS  |  iOS • Mac Catalyst • Releases PSPDFKit 9.1 for iOS Introducing PSPDFKit 9.1 for iOS — featuring improved Image Documents, better Mac Catalyst support, and extended appearance customization options.

DEVELOPMENT  |  iOS • Swift • Objective-C • UI/UX Adopting Dark Mode on iOS and Ensuring Backward Compatibility A comprehensive overview of adopting Dark Mode in an iOS app, along with a few tips to make the process of development easier.

PRODUCTS  |  iOS • Mac Catalyst • Releases PSPDFKit 9 for iOS PSPDFKit 9 for iOS introduces Mac Catalyst support, as well as many great new iOS 13 features such as native Dark Mode and multi-window support.

DEVELOPMENT  |  Android • iOS • macOS • Windows • C++ • Insights Challenges of Using Emojis with C++ In this article, we discuss the challenges of implementing your own custom emoji support in a cross-platform way.

TUTORIALS  |  iOS • Cordova • How To How to Expose Native iOS APIs to Cordova A tutorial about how to expose native iOS APIs to Cordova.

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

PRODUCTS  |  iOS • Releases PSPDFKit 8.5 for iOS Introducing PSPDFKit 8.5 for iOS — with user interface options to change the stacking order of annotations and the page binding of documents.

TUTORIALS  |  iOS • Swift • Objective-C • How To Customizing Segmented Controls in PSPDFKit We show how to customize the segmented controls in the document info coordinator.

TUTORIALS  |  iOS • How To How to Take Notes Using the PSPDFKit UI An introduction to adding notes to your PDFs with PSPDFKit.

TUTORIALS  |  iOS • Objective-C • JavaScript • How To How to Create a Game with PDF and JavaScript This blog post explains how to extend the link creation API in PSPDFKit to create JavaScript actions and build a simple tic-tac-toe PDF game.

DEVELOPMENT  |  iOS • Swift • Tips Making a Resource Thread-Safe with Locks We discuss how to ensure thread safety and synchronization via locking.

TUTORIALS  |  iOS • How To • Swift • Instant • Annotations Strategies for Saving and Syncing Annotations Using External Files We discuss the different strategies for saving and syncing annotations in external files on iOS.

TUTORIALS  |  iOS • Swift • How To Inserting an Image into a PDF with Swift We provide a step-by-step explanation of how to insert an image into a PDF using Swift.

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 • Tips Swizzling in Swift A quick crash course on how to swizzle correctly, and how to do it in Swift 5.1

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  |  iOS • Swift • How To Drawing on PDFs Using Ink Annotations We show how to draw on a PDF using an ink annotation in PDFKit.

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.

PRODUCTS  |  iOS • Releases PSPDFKit 8.4 for iOS Introducing PSPDFKit 8.4 for iOS — featuring a new floating page scrubber bar, a refreshed look for the annotation inspector, rotation for text annotations, and an eraser thickness slider.

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

TUTORIALS  |  iOS • Swift • How To PDF Text Extraction in Swift We demonstrate how to extract text from a PDF using Swift via PDFKit.

DEVELOPMENT  |  iOS • Insights The Bittersweet iOS Document Browser A quick look at both the benefits and downsides of using the iOS system document browser in your applications.

PRODUCTS  |  iOS • Releases PSPDFKit 8.3 for iOS Introducing PSPDFKit 8.3 for iOS — featuring stamp annotation rotation, a new link annotation editing UI, extended support for keyboard shortcuts, and much more.

TUTORIALS  |  iOS • Android • Flutter • How To Getting Started with PSPDFKit for Flutter How to get started with PSPDFKit for Flutter.

TUTORIALS  |  iOS • Swift • How To Watermarking a PDF on iOS We explain how to watermark a PDF — both temporarily and permanently.

TUTORIALS  |  iOS • Swift • How To Extracting Images from a PDF in Swift How to extract images from a PDF with Swift.

DEVELOPMENT  |  iOS • Objective-C • Insights Embracing the Limits of UIActivityViewController We talk about our experience in implementing the new sharing flow.

DEVELOPMENT  |  iOS • Swift • Insights PSPDFKit and Swift Will PSPDFKit for iOS move to Swift? In this post, we weigh the pros and cons.

TUTORIALS  |  iOS • Swift • How To ’Annotate PDFs with Images via PDFKit’ ’We show you how to annotate a PDF with an image via PDFKit.’

DEVELOPMENT  |  iOS • Swift • Tips • Debugging Adding Logging to Crash Reports Understanding crash reports is often difficult without extra context. Learn how we attach application logs to crash reports via Google's Firebase Crashlytics in the free PDF Viewer for iOS app.

TUTORIALS  |  iOS • Swift • How To Converting an Image to a PDF in Swift We provide a step-by-step explanation of how to convert an image to a PDF.

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.

TUTORIALS  |  iOS • Swift • HTML • How To How to Convert HTML to PDF with Swift A tutorial about how to convert simple HTML to PDF using Swift.

PRODUCTS  |  iOS • Releases PSPDFKit 8.2 for iOS Introducing PSPDFKit 8.2 for iOS — featuring an extended and redesigned bookmark UI, updated half modals, and significant performance improvements.

DEVELOPMENT  |  iOS • macOS • Swift • Objective-C • Tips Writing and Maintaining Good Code Documentation Tips, tricks, and techniques for documenting your code the correct way.

DEVELOPMENT  |  iOS • Windows • UWP • C# • Insights UWP for iOS Developers A brief introduction to Universal Windows development for iOS developers.

TUTORIALS  |  iOS • Swift • How To Creating a PDF in Swift Using PDFKit How to create and customize a PDF in Swift using PDFKit.

TUTORIALS  |  iOS • Swift • Objective-C • How To Converting an Attributed String to a PDF How to convert a string with formatting to a PDF.

2018

DEVELOPMENT  |  iOS • Swift • Objective-C • Insights Self-Sizing Table View Cells in Practice A look at self-sizing table view cells for apps supporting iOS 10, 11, and 12, covering three implementation approaches and some pitfalls I encountered supporting these across our UI in PSPDFKit.

PRODUCTS  |  iOS • Releases PSPDFKit 8.1 for iOS Introducing PSPDFKit 8.1 for iOS — featuring free-form redaction, file conflict detection, and Apple Pencil gestures.

TUTORIALS  |  iOS • Swift • How To Search and Redact Text in Swift How to search and redact text using Swift and PSPDFKit for iOS.

DEVELOPMENT  |  iOS • Swift • C++ • Open Source • Tips Tips and Tricks for Contributing to the Swift Language This post describes the process for contributing code to the Swift programming language, including how to propose changes to the language, write a pull request, address feedback, and make your code part of the next version of the language.

PRODUCTS  |  iOS • Insights Color-Correct Night Mode A blog post showing how we go the extra mile to create good-looking color in night mode.

DEVELOPMENT  |  iOS • Swift • Objective-C • Performance Using Signposts for Performance Tuning on iOS A look at the different ways that we measure and try to improve performance at PSPDFKit.

DEVELOPMENT  |  iOS • Tips Creating an Efficient App Store Screenshot Workflow A look at how we generate our screenshots for the iOS App Store.

DEVELOPMENT  |  iOS • Insights iOS HEIC Performance We evaluate the encoding and decoding performance of HEIC.

DEVELOPMENT  |  iOS • Objective-C • Insights Challenges of Adopting Drag and Drop A recap of how we integrated drag-and-drop support into our Document Editor in iOS.

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  |  iOS • Tips Refactoring Large Codebases: Tips and Tricks If you're going to fall down a rabbit hole anyway, you might as well enjoy it!

DEVELOPMENT  |  iOS • Tips Improving Dynamic Type Support How to improve Dynamic Type support in your app and bring it to the next level.

PRODUCTS  |  iOS • Releases PSPDFKit 8 for iOS Introducing PSPDFKit 8 for iOS. Featuring new redaction and comparison components, an overhauled sharing UI, and full iOS 12 and Xcode 10 support.

DEVELOPMENT  |  iOS • Debugging • Tips How to Extend LLDB to Provide a Better Debugging Experience Explore the extensibility capabilities of LLDB, a debugger for Swift, C, C++, and Objective-C code.

PRODUCTS  |  iOS • Android • Web • Tips Examples for Using Our Frameworks Here at PSPDFKit, we believe doing practical work is the best way to learn things, so we decided to create a few example apps to help customers explore our framework.

TUTORIALS  |  iOS • How To Integrating PSPDFKit with CocoaPods A complete step-by-step guide on how to install CocoaPods and integrate PSPDFKit.

TUTORIALS  |  iOS • How To Custom PDF Page Templates with PSPDFKit for iOS We show how a developer can use our PSPDFPageTemplate class to create custom PDF templates with iOS

DEVELOPMENT  |  iOS • macOS • Insights Marzipan: Porting iOS Apps to the Mac With macOS Mojave, Apple is adding support to bring apps written in UIKit to macOS without the requirement of having to rewrite the UI in AppKit. This is not yet officially supported — this post will explore what we can expect in 2019 and how you can use Marzipan today.

DEVELOPMENT  |  iOS • Insights The Challenges of Changelogs How we handle changelogs at PSPDFKit and the tools we built to help us with this.

TUTORIALS  |  iOS • React Native • How To How to Extend React Native APIs A tutorial about how to expose native iOS APIs to React Native.

DEVELOPMENT  |  Flutter • Android • iOS • Insights How I Got Started with Flutter A short review of Flutter from a mobile developer’s standpoint.

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

PRODUCTS  |  iOS • Releases PSPDFKit 7.7 for iOS Introducing PSPDFKit 7.7 for iOS — featuring a new document info screen, Document Editor enhancements, improved thumbnail filtering, image document export, and preliminary iOS 12 and Xcode 10 support.

DEVELOPMENT  |  iOS • Swift • Insights Smart Grid Sizing How PSPDFKit is smart about choosing thumbnail sizes.

TUTORIALS  |  iOS • Android • macOS • How To How to Embed Files Using File Annotations We're taking a look at how to embed files using file annotations.

PRODUCTS  |  iOS • Releases PSPDFKit 7.6 for iOS Introducing PSPDFKit 7.6 for iOS — featuring non-destructive image documents, page templates, and stamp UI improvements.

DEVELOPMENT  |  iOS • Insights Advances in Auto Layout An overview of how Auto Layout has changed in recent years and how to best use it.

DEVELOPMENT  |  iOS • Insights Smart Punctuation on iOS 11 We explain iOS 11's Smart Punctuation and discuss how it affects string handling in your app.

DEVELOPMENT  |  iOS • Android • C++ • Objective-C Failable Methods with Djinni In this article, we have look at using result types to model failable computations in the Djinni IDL.

DEVELOPMENT  |  iOS • Tips Leveraging SQLite Full-Text Search on iOS We look at SQLite’s FTS extension and how you can use it to add high performance search to your app.

DEVELOPMENT  |  iOS • Insights UICollectionView All the Things! `UICollectionView` is now at the heart of every document. This blog post talks about why and how we rewrote our view hierarchy.

PRODUCTS  |  iOS • Swift First-Class Swift API for Objective-C Frameworks Objective-C and Swift interoperability with PSPDFKitSwift

PRODUCTS  |  iOS • Releases PSPDFKit 7.4 for iOS Introducing PSPDFKit 7.4 for iOS — featuring a new document features helper, text selection enhancements, and improved Swift interoperability.

PRODUCTS  |  iOS • React Native React Native UI Component for iOS Introducing a native UI component for showing PDFs in a React Native app with PSPDFKit.

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.

PRODUCTS  |  Android • iOS Localization at PSPDFKit An overview of how localization is handled at PSPDFKit.

DEVELOPMENT  |  iOS • Swift • Insights Binary Frameworks in Swift ABI? Module stability? What does binary stability mean, and how will it affect you?

PRODUCTS  |  iOS • Releases PSPDFKit 7.3 for iOS Introducing PSPDFKit 7.3 for iOS. Featuring image document support, text selection enhancements, and Digital Signature improvements.

2017

DEVELOPMENT  |  iOS • UI/UX • Insights Adopting Drag and Drop on iOS Utilizing the new Drag and Drop feature in iOS 11, and how we integrated it to enhance the user experience.

TUTORIALS  |  iOS • Android • How To Use Vector Stamps Instead of Blurry Shapes Tips and tricks for using vector-based stamp annotations.

PRODUCTS  |  iOS • Releases PSPDFKit 7.1 for iOS Introducing PSPDFKit 7.1 for iOS. Featuring iPhone X compatibility, copying and pasting document pages, drawing performance improvements, and more.

DEVELOPMENT  |  iOS • Insights Challenges of Supporting iPhone X Tips and tricks for adding support for the iPhone X in PSPDFKit.

DEVELOPMENT  |  iOS • Swift • Instant • Tips How to Use iOS Data Protection How apps can use iOS Data Protection to secure their files.

PRODUCTS  |  iOS • Releases PSPDFKit 7.0 for iOS Introducing PSPDFKit 7.0 for iOS. iOS 11 support. Drag and Drop. New View Hierarchy. Biometric Signatures. Checkpoints.

PRODUCTS  |  iOS • Releases Introducing PDFXKit - A Drop-in Replacement for PDFKit

DEVELOPMENT  |  iOS • React Native • Swift • JavaScript Native View Controllers and React Native - It Just Works™

PRODUCTS  |  iOS • Releases PSPDFKit 6.9 for iOS Introducing PSPDFKit 6.9 for iOS. Text Markup Behavior. Catalog Refresh. Signature Improvements. UI Tweaks.

DEVELOPMENT  |  iOS • Debugging • Xcode User Breakpoints in Xcode User breakpoints are a not very well known feature in Xcode but they are very powerful and can improve your debugging experience and show issues more prominent.

PRODUCTS  |  iOS • Releases PSPDFKit 6.8 for iOS Introducing PSPDFKit 6.8 for iOS. Revamped Digital Signatures. Watermark Filtering. iOS 11. And More.

DEVELOPMENT  |  iOS • Swift • Objective-C Even Swiftier Objective-C

PRODUCTS  |  iOS • Releases PSPDFKit 6.7 for iOS Introducing PSPDFKit 6.7 for iOS. Page Grabber. File Coordination. Document Progress Indication. Privacy Access Denied UI.

DEVELOPMENT  |  iOS • Android • Tips • UI/UX Creating Better User Experiences with Animations and Lottie Improving an app’s User Experience made easy by adding animations powered by Lottie.

PRODUCTS  |  iOS • Releases PSPDFKit 6.6 for iOS Introducing PSPDFKit 6.6 for iOS. Right-to-Left Documents. Annotation Drawing. Line Thickness. Various Bug-fixes.

DEVELOPMENT  |  iOS • Objective-C • Xcode Internationalization - Right to Left Support for Mobile Apps What Right to Left Support Actually Means and How We Implemented It

PRODUCTS  |  iOS • Releases PSPDFKit 6.5 for iOS Introducing PSPDFKit 6.5 for iOS. Better Apple Pencil Support. 3D Touch. Forms. UI Enhancements. Even More Improvements.

PRODUCTS  |  iOS • Releases PSPDFKit 6.4 for iOS Introducing PSPDFKit 6.4 for iOS. RTL Support. Image Editor. FTS 5. Swift Enhancements.

DEVELOPMENT  |  iOS • Objective-C • Tips The Struggle with Action Extensions Pitfalls when developing a Share or an Action Extension

DEVELOPMENT  |  iOS • Swift • Objective-C • Insights The Case for Deprecating UITableView

DEVELOPMENT  |  iOS • Insights Creating a Compelling Today Widget Best Practices on Developing a Today Widget

DEVELOPMENT  |  Android • iOS • Objective-C • C++ Super Fast Builds Using distcc How to dramatically shorten your build times with distcc.

2016

PRODUCTS  |  iOS • Releases PSPDFKit 6.3 for iOS Introducing PSPDFKit 6.3 for iOS. PSPDF Instant Compatibility. More Languages. UI Improvements.

DEVELOPMENT  |  iOS • Tips Hiding Your Action and Share Extensions In Your Own Apps

PRODUCTS  |  iOS • Releases PSPDFKit 6.2 for iOS Announcing PSPDFKit 6.2 for iOS. Lock Annotations. Document Sharing. Customizations. Performance Improvements.

PRODUCTS  |  iOS • Releases PSPDFKit 6.1 for iOS PSPDFKit 6.1 for iOS, featuring a whole new search interface overhaul, analytics integration and much more.

DEVELOPMENT  |  iOS • Android • Testing Running Tests with Clang's AddressSanitizer Clang has powerful sanitizers that are incredibly useful, so we collected our experiences using them between iOS, Android, and our C++ core to help you through some gotchas.

DEVELOPMENT  |  iOS • Debugging • Tips Debugging a specific instance with scripted breakpoints 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 are only interested in a very particular one. This can become very tedious work.

PRODUCTS  |  iOS • Releases PSPDFKit 6 for iOS PSPDFKit 6 for iOS is fully optimized for Xcode 8 and iOS 10, comes with improved API for Swift 3, faster rendering, various fixes, and a visual refresh.

DEVELOPMENT  |  iOS • Debugging • Tips Writing Good Bug Reports At PSPDFKit, we work every day to read through developers' bug reports. In fact, we forward many of them to the engineers at Apple. While this post is Apple-centric, many details can be applied to any sort of bug reporting.

DEVELOPMENT  |  iOS • Objective-C • Tips • UI/UX Spicing up status messages At PSPDFKit, we likely spend just as much time polishing the UI as we do implementing PDF features or tweaking the performance. Here's a look at how one of our developers explored improving our status messages.

DEVELOPMENT  |  iOS • Testing Converting Xcode Test Runs to JUnit, the Fast Way

TUTORIALS  |  iOS • Swift • How To Opening a PDF in Swift

DEVELOPMENT  |  iOS • Tips Preventing Popovers on Popovers

DEVELOPMENT  |  iOS • Tips Efficient iOS Version Checking

PRODUCTS  |  iOS • Releases PSPDFKit 5.4 for iOS

DEVELOPMENT  |  iOS • Debugging Investigating Thread Safety of UIImage

PRODUCTS  |  iOS • Releases PSPDFKit 5.3 for iOS and Beyond PSPDFKit 5.3 for iOS includes customizable color picker, new display settings, and other features!

DEVELOPMENT  |  iOS • Swift • Objective-C • Insights Swifty Objective-C

DEVELOPMENT  |  iOS • Testing Continuous iOS Code Coverage With Jenkins and Slather

DEVELOPMENT  |  iOS • Performance • Testing • UI/UX Running UI Tests on iOS With Ludicrous Speed

DEVELOPMENT  |  iOS • Tips Adding live search to Jazzy docs

DEVELOPMENT  |  iOS • Tips • Debugging Debugging Rotation Issues

DEVELOPMENT  |  iOS • Swift • Objective-C • Insights Surprises with Swift Extensions

PRODUCTS  |  iOS • Releases PSPDFKit 5.2 for iOS

2015

PRODUCTS  |  iOS • Releases PSPDFKit 5.1 for iOS

DEVELOPMENT  |  iOS • Insights Presentation Controllers and Adaptive Presentations

DEVELOPMENT  |  iOS • Productivity • Insights Using Ccache for Fun and Profit

PRODUCTS  |  iOS • Releases PSPDFKit 5 for iOS

PRODUCTS  |  iOS • Releases PSPDFKit 4.4 for iOS

PRODUCTS  |  iOS • Releases PSPDFKit 4.3 for iOS

PRODUCTS  |  iOS • Releases PSPDFKit 4.2 for iOS

2014

PRODUCTS  |  iOS • Releases PSPDFKit 4.1 for iOS

PRODUCTS  |  iOS • Releases PSPDFKit 4 for iOS

PRODUCTS  |  iOS • Releases PSPDFKit 3.7 for iOS

PRODUCTS  |  iOS • Releases PSPDFKit 3.6 for iOS

PRODUCTS  |  iOS • Releases PSPDFKit 3.5 for iOS

PRODUCTS  |  iOS • Releases PSPDFKit 3.4 for iOS

2013

PRODUCTS  |  iOS • Releases PSPDFKit 3.3 for iOS