Swift Articles | Nutrient Blog

Stefan Kieleithner

How to unlock PDF functionality with OCR in iOS

Integrate OCR in iOS to make scanned PDFs interactive. Extract text, enable selection, add highlights, and search documents using Nutrient iOS SDK and Swift.

A deep dive into notifications and messages on iOS 26

Douglas Hill

A deep dive into notifications and messages on iOS 26

Annotate PDFs with Images via PDFKit

Nishant Desai

Annotate PDFs with Images via PDFKit

Customizable SwiftUI toolbar API for developers

Stefan Kieleithner

Customizable SwiftUI toolbar API for developers

How to use iOS Data Protection (updated for iOS 17)

Douglas Hill

How to use iOS Data Protection (updated for iOS 17)

Is My Document a Valid PDF?

Oscar Swanros

Is My Document a Valid PDF?

Sync annotations using external files

Rad Azzouz

Sync annotations using external files

How to sign a PDF on iOS with Nutrient’s signature library

Stefan Kieleithner

How to sign a PDF on iOS with Nutrient’s signature library

Generating API documentation for multiple targets with DocC

Stefan Kieleithner

Generating API documentation for multiple targets with DocC

Privacy Manifests and Required Reason APIs on iOS

Nishant Desai

Privacy Manifests and Required Reason APIs on iOS

Using Asset Catalogs for Images

Nishant Desai

Using Asset Catalogs for Images

Adopting UITextInteraction

Stefan Kieleithner

Adopting UITextInteraction

Exploring SwiftUI for seamless app development

Nishant Desai

Exploring SwiftUI for seamless app development

Developing Mixed-Source Swift Packages

Daniel Langh

Developing Mixed-Source Swift Packages

Optimizing annotation drawing performance

Nishant Desai

Optimizing annotation drawing performance

SourceKit limitations in Swift API docs

Stefan Kieleithner

SourceKit limitations in Swift API docs

Adding a Document Viewer to a Mac Catalyst App

Nishant Desai

Adding a Document Viewer to a Mac Catalyst App

Replicating the iOS Text Magnifying Glass

Stefan Kieleithner

Replicating the iOS Text Magnifying Glass

Our Attempt at Rewriting PSPDFKit Catalog in SwiftUI

Adrian Kashivskyy

Our Attempt at Rewriting PSPDFKit Catalog in SwiftUI

Fitting Text into a Bounding Frame on iOS

Matej Bukovinski

Fitting Text into a Bounding Frame on iOS

Debugging Image Loading and Cropping Performance on iOS

Nishant Desai

Debugging Image Loading and Cropping Performance on iOS

Adding annotations in Swift with PDFKit vs. Nutrient

Christoph Mantler

Adding annotations in Swift with PDFKit vs. Nutrient

Creating and Filling Forms Programmatically in Swift

Akshat Patel

Creating and Filling Forms Programmatically in Swift

Streams of Cocoa: Why It's Still Worth Knowing NSStream

Daniel Demiss

Streams of Cocoa: Why It's Still Worth Knowing NSStream

Deflaking CI tests with xcresults

Matej Bukovinski

Deflaking CI tests with xcresults

Keyboard Navigation in SwiftUI

Peter Steinberger

Keyboard Navigation in SwiftUI

Using the Document Browser in SwiftUI to Open a PDF

Peter Steinberger

Using the Document Browser in SwiftUI to Open a PDF

Using the SwiftUI ColorPicker on iOS and macOS

Peter Steinberger

Using the SwiftUI ColorPicker on iOS and macOS

Convert a PDF to an image in Swift

Akshat Patel

Convert a PDF to an image in Swift

Caching file downloads with URLCache in Swift

Peter Steinberger

Caching file downloads with URLCache in Swift

Presenting popovers from SwiftUI

Peter Steinberger

Presenting popovers from SwiftUI

Extending the Scribble User Experience

Akshat Patel

Extending the Scribble User Experience

An Introduction to LLDB Reproducers

Daniel Martín

An Introduction to LLDB Reproducers

Adding Multimedia Content to a PDF as a Gallery

Nishant Desai

Adding Multimedia Content to a PDF as a Gallery

Binary Frameworks as Swift Packages

Rad Azzouz

Binary Frameworks as Swift Packages

Using Metal to Apply Image Filters

Nishant Desai

Using Metal to Apply Image Filters

The Case for Lists in UICollectionView

Douglas Hill

The Case for Lists in UICollectionView

The hidden trap in table and collection view reloads

Matej Bukovinski

The hidden trap in table and collection view reloads

Automatically Redact Faces with PSPDFKit for iOS

Daniel Martín

Automatically Redact Faces with PSPDFKit for iOS

NULL-Characters in Strings and Tales of Apple Radar

Peter Steinberger

NULL-Characters in Strings and Tales of Apple Radar

Level Up Your Trackpad Support Using UIInteraction

Douglas Hill

Level Up Your Trackpad Support Using UIInteraction

An In-Depth Look at Blur Effect Materials on iOS

Nishant Desai

An In-Depth Look at Blur Effect Materials on iOS

Supporting Pointer Interactions

Peter Steinberger

Supporting Pointer Interactions

Introduction to SwiftUI for React Developers (Part 2)

Guillermo Peralta Scura

Introduction to SwiftUI for React Developers (Part 2)

Introduction to SwiftUI for React Developers (Part 1)

Guillermo Peralta Scura

Introduction to SwiftUI for React Developers (Part 1)

How to Add Attribution to PDFs with PSPDFKit for iOS

Oscar Swanros

How to Add Attribution to PDFs with PSPDFKit for iOS

Adopting UIAppearance in Custom Views

Adrian Kashivskyy

Adopting UIAppearance in Custom Views

Introduction to C++ for Swift Developers

Daniel Martín

Introduction to C++ for Swift Developers

Adopting Dark Mode on iOS and Ensuring Backward Compatibility

Nishant Desai

Adopting Dark Mode on iOS and Ensuring Backward Compatibility

Customizing segmented controls in Nutrient

Christoph Mantler

Customizing segmented controls in Nutrient

Making a Resource Thread-Safe with Locks

Oscar Swanros

Making a Resource Thread-Safe with Locks

Inserting an Image into a PDF with Swift

Nishant Desai

Inserting an Image into a PDF with Swift

Swizzling in Swift

Peter Steinberger

Swizzling in Swift

Working with PDF Metadata in Swift

Stefan Kieleithner

Working with PDF Metadata in Swift

Drawing on PDFs Using Ink Annotations

Akshat Patel

Drawing on PDFs Using Ink Annotations

How to show a PDF in SwiftUI

Rad Azzouz

How to show a PDF in SwiftUI

Merge PDFs in Swift

Stefan Kieleithner

Merge PDFs in Swift

Secure Documents with PSPDFKit for iOS

Rad Azzouz

Secure Documents with PSPDFKit for iOS

PDF Text Extraction in Swift

Nishant Desai

PDF Text Extraction in Swift

Watermarking a PDF on iOS

Aditya Krishnadevan

Watermarking a PDF on iOS

Extracting Images from a PDF in Swift

Stefan Kieleithner

Extracting Images from a PDF in Swift

PSPDFKit and Swift

Peter Steinberger

PSPDFKit and Swift

Adding Logging to Crash Reports

Peter Steinberger

Adding Logging to Crash Reports

Converting an Image to a PDF in Swift

Stefan Kieleithner

Converting an Image to a PDF in Swift

How to Convert HTML to PDF with Swift

Rad Azzouz

How to Convert HTML to PDF with Swift

Writing and Maintaining Good Code Documentation

Oscar Swanros

Writing and Maintaining Good Code Documentation

Creating a PDF in Swift using PDFKit

Nishant Desai

Creating a PDF in Swift using PDFKit

Converting an Attributed String to a PDF

Stefan Kieleithner

Converting an Attributed String to a PDF

Self-Sizing Table View Cells in Practice

Douglas Hill

Self-Sizing Table View Cells in Practice

Search and Redact Text in Swift

Rad Azzouz

Search and Redact Text in Swift

Tips and Tricks for Contributing to the Swift Language

Daniel Martín

Tips and Tricks for Contributing to the Swift Language

Using Signposts for Performance Tuning on iOS

Aditya Krishnadevan

Using Signposts for Performance Tuning on iOS

Smart Grid Sizing

Douglas Hill

Smart Grid Sizing

Exporting Images from PDF with PSPDFKit for macOS

Jonathan D. Rhyne

Exporting Images from PDF with PSPDFKit for macOS

First-Class Swift API for Objective-C Frameworks

Marcin Krzyżanowski

First-Class Swift API for Objective-C Frameworks

Ways to Create a PDF on iOS

Jonathan D. Rhyne

Ways to Create a PDF on iOS

Binary Frameworks in Swift

Peter Steinberger

Binary Frameworks in Swift

Native View Controllers and React Native - It Just Works™

Ben Kraus

Native View Controllers and React Native - It Just Works™

Even Swiftier Objective-C

Peter Steinberger

Even Swiftier Objective-C

The Case for Deprecating UITableView

Peter Steinberger

The Case for Deprecating UITableView

Opening a PDF in Swift

Julian Grosshauser

Opening a PDF in Swift

Swifty Objective-C

Peter Steinberger

Swifty Objective-C

Surprises with Swift Extensions

Peter Steinberger

Surprises with Swift Extensions