Tutorials

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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.

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TUTORIALS  |  Web • Angular • JavaScript • How To

How to Build an Angular PDF Viewer with PDF.js

How to build an Angular PDF viewer with ngx-extended-pdf-viewer and PSPDFKit for Web.

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TUTORIALS  |  Web • JavaScript • How To

How to Build a JavaScript PDF Editor with pdf-lib

How to approach building a PDF editor with JavaScript using the pdf-lib library.

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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.

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TUTORIALS  |  .NET • C# • PDF • How To

How to Edit a PDF Programmatically with C#

Using PSPDFKit to edit a PDF in .NET.

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TUTORIALS  |  Web • How To • JavaScript

Creating Images from Text on the Web Using Canvas

Due to the wide variety of web rendering engines, a task such as generating a bitmap image from text with a certain style can be trickier than expected. This blog post presents some aspects to consider.

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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.

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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.

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TUTORIALS  |  Android • Kotlin • Java • How To

Creating and Filling Out Forms Programmatically on Android

This blog post shows how to create and fill out forms programmatically on Android.

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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.

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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.

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TUTORIALS  |  Cordova • How To • PDF

How to Build a Cordova PDF Viewer

This post shows how to add PDF support to your Cordova app running on iOS and Android.

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TUTORIALS  |  Web • How To • JavaScript

Approaches to Undo and Redo

A step-by-step guide to implement an undo and redo history manager.

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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.

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TUTORIALS  |  Android • Kotlin • PDF • How To • Annotations

Embedding Audio in PDFs: Sound Annotations in Depth

An introduction to PDF sound annotations.

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TUTORIALS  |  Web • How To

Private Mode Using Collaboration Permissions

We go through the steps required to implement private mode in PSPDFKit for Web using Collaboration Permissions.

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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.

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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.

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TUTORIALS  |  Android • Flutter • Java • How To

How to Customize Our Flutter PDF SDK

How to fork and modify the PSPDFKit Flutter PDF SDK for your own application.

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TUTORIALS  |  Android • Kotlin • How To

Converting an Image to PDF in Kotlin

Learn how to convert an image to PDF using PSPDFKit for Android and Kotlin.

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TUTORIALS  |  Web • JavaScript • How To

How to Upload an Image and Insert It as an Annotation with Vue.js

This blog post will show you how to upload an image annotation in Vue.js, using adding a logo to a PDF as an example.

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TUTORIALS  |  Web • Next.js • JavaScript • How To

How to Add a Watermark with Next.js

A tutorial that walks you through rendering a custom watermark on each page of a PDF with Next.js.

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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.

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TUTORIALS  |  iOS • Flutter • Objective-C • How To

How to Bridge Native iOS Code to Flutter

A tutorial about how to bridge native iOS code to Flutter.

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TUTORIALS  |  Android • Kotlin • Security • Signing • PDF • How To

Digital Signing on Android

How digital signing and contained signatures on Android work.

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TUTORIALS  |  Android • Kotlin • How To

Performing OCR on Android

A post showing how to use PSPDFKit for Android to perform OCR on scanned documents.

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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.

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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.

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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.

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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.

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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.

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TUTORIALS  |  Web • Redaction • How To

Levels of Redaction Automation

A detailed look at the different ways we can automate the redaction process.

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TUTORIALS  |  Web • Redaction • How To • JavaScript

Data-Driven Redaction in Web

Redacting PDF contents based on variable input data in PSPDFKit for Web.

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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.

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TUTORIALS  |  Android • Kotlin • How To • Redaction

How to Create Multiple Redactions with Search on Android

Learn how you can leverage the redaction functionality of PSPDFKit for Android to effectively remove text patterns from documents.

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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.

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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.

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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.

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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.

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TUTORIALS  |  Android • How To • Kotlin

Adding a Persistent Annotation Sidebar

Learn how to put together all the components PSPDFKit provides to build a custom Annotation UI.

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TUTORIALS  |  .NET • PDF • How To

How to Split a PDF in .NET

Learn how to split a PDF into two or more distinct PDFs.

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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.

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TUTORIALS  |  Web • JavaScript • How To

How to Implement the Revealed Area Annotation with Custom Renderers

A look at how our Hide/Reveal Area example was implemented in PSPDFKit for Web.

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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.

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TUTORIALS  |  Elixir • How To • Server • Productivity

Batch Processing PDF Files with Elixir Using PSPDFKit Server

See how Elixir and PSPDFKit Server are a perfect match for processing a large number of PDF files.

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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.

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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.

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TUTORIALS  |  Web • How To

UI Theming with CSS Variable Mapping

A short blog post about the difficulties of naming variables.

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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.

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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.

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TUTORIALS  |  Web • Elixir • How To • Server

Declarative Validation with Elixir

How to write custom data validation logic with Elixir.

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TUTORIALS  |  Java • Kotlin • PDF • How To

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.

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TUTORIALS  |  PDF • Java • How To

Data-Driven Redaction in Java

Redacting PDF contents based on variable input data.

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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!

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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.

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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

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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.

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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.

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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.

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TUTORIALS  |  Web • Express.js • JavaScript • How To

Serving PDFs with Express.js

We cover some of the different ways to serve PDFs with Express.js

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TUTORIALS  |  Web • JavaScript • How To

Integrating PSPDFKit with GatsbyJS

Enhance your GatsbyJS static generated site with the PDF viewing and annotating capabilities of PSPDFKit for Web.

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TUTORIALS  |  Web • Svelte • JavaScript • How To

Open PDFs in a Svelte App with PSPDFKit

Integrate PSPDFKit for Web from scratch in a Svelte application using Parcel.

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TUTORIALS  |  Android • Kotlin • How To

Persisting the Tabs State on Android

A blog post describing how to persist the tabs state inside PdfActivity.

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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.

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TUTORIALS  |  Web • Next.js • JavaScript • How To

Open PDFs in a Next.js App with PSPDFKit

How to add a PDF viewer to your Next.js app by embedding PSPDFKit for Web.

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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.

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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.

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TUTORIALS  |  Android • Kotlin • PDF • How To

Add a Watermark to a PDF on Android

How to add a watermark to a PDF on Android.

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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.

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TUTORIALS  |  iOS • Cordova • How To

How to Expose Native iOS APIs to Cordova

A tutorial about how to expose native iOS APIs to Cordova.

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TUTORIALS  |  Web • JavaScript • How To

Adding Custom Localization to PSPDFKit for Web

This post will cover how you can add custom localization to PSPDFKit for Web.

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TUTORIALS  |  Windows • C# • PDF • How To

Add a Watermark to a PDF in UWP

How to add a watermark to a PDF on UWP.

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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.

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TUTORIALS  |  iOS • How To

How to Take Notes Using the PSPDFKit UI

An introduction to adding notes to your PDFs with PSPDFKit.

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TUTORIALS  |  Cordova • JavaScript • How To

How to Manipulate Annotations Programmatically in Cordova

A tutorial about how to manipulate annotations programmatically in Cordova using Instant JSON and XFDF.

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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.

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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.

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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.

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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.

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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.

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TUTORIALS  |  Android • How To

A Gentle Introduction to RxJS

A short introduction to RxJS, highlighting the differences between traditional event-based JavaScript and the use of Observables.

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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.

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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.

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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.

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TUTORIALS  |  Web • Elm • How To

Open and Annotate PDFs from Your Elm App

A tutorial on how to add advanced PDF features to your Elm app using PSPDFKit for Web

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TUTORIALS  |  Android • Dart • Flutter • How To

How to Open a PDF in Flutter using flutter_full_pdf_viewer

A tutorial on how to open a PDF in Flutter.

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TUTORIALS  |  iOS • Swift • PDF • How To

Merge PDFs in Swift

How to merge multiple PDF files in Swift.

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TUTORIALS  |  Web • How To • UI/UX

Beyond Theming with CSS

In this blog post, we’ll look at some simple solutions we use at PSPDFKit to make our modals more inclusive and accessible.

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TUTORIALS  |  iOS • Swift • Objective-C • PDF • How To • Security

Secure Documents with PSPDFKit for iOS

How to secure documents using PSPDFKit for iOS.

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TUTORIALS  |  iOS • Swift • How To

PDF Text Extraction in Swift

We demonstrate how to extract text from a PDF using Swift via PDFKit.

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TUTORIALS  |  Web • JavaScript • ReasonML • How To

Open PDF Documents with ReasonML

How to open and work with PDF documents from your ReasonML app.

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TUTORIALS  |  Windows • React Native • C# • JavaScript • How To

How to Extend React Native APIs for Windows

A tutorial about how to expose native PSPDFKit for Windows APIs to React Native.

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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.

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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.

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TUTORIALS  |  iOS • Android • Flutter • How To

Getting Started with PSPDFKit for Flutter

How to get started with PSPDFKit for Flutter.

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TUTORIALS  |  iOS • Swift • How To

Watermarking a PDF on iOS

We explain how to watermark a PDF — both temporarily and permanently.

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TUTORIALS  |  Web • React Native • React • How To

How to Create a PDF with React

We explore react-pdf, a custom React renderer that can generate PDFs in the browser, on the server, and on mobile devices.

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TUTORIALS  |  iOS • Swift • How To

Extracting Images from a PDF in Swift

How to extract images from a PDF with Swift.

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TUTORIALS  |  Web • JavaScript • HTML • How To

How to Generate a PDF with JavaScript

Generate PDFs in JavaScript using html2pdf and Puppeteer.

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TUTORIALS  |  iOS • Swift • How To

Annotate PDFs with Images via PDFKit

We show you how to annotate a PDF with an image via PDFKit.

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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.

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TUTORIALS  |  Windows • UWP • C# • How To

Open a PDF on the Universal Windows Platform

How to display a PDF in your UWP app.

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TUTORIALS  |  Web • Angular • JavaScript • How To

Open PDFs in an Angular App with PSPDFKit

How to add a PDF viewer to your Angular app by embedding PSPDFKit for Web.

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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.

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TUTORIALS  |  Web • PDF.js • JavaScript • How To

Implement a Simple PDF Viewer with PDF.js

An example of how to implement a minimal PDF viewer with Mozilla's PDF.js.

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TUTORIALS  |  Web • Elm • How To

Open a PDF in Elm

How to integrate PDF support into your Elm app.

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TUTORIALS  |  iOS • Swift • How To

Creating a PDF in Swift Using PDFKit

How to create and customize a PDF in Swift using PDFKit.

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TUTORIALS  |  iOS • Swift • Objective-C • How To

Converting an Attributed String to a PDF

How to convert a string with formatting to a PDF.

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TUTORIALS  |  Web • TypeScript • How To

Open and Annotate PDFs in a TypeScript App

How to add a PDF viewer and annotator to your TypeScript app by embedding PSPDFKit for Web.

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TUTORIALS  |  iOS • Swift • How To

Search and Redact Text in Swift

How to search and redact text using Swift and PSPDFKit for iOS.

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TUTORIALS  |  How To • PDF

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.

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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.

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TUTORIALS  |  Web • JavaScript • How To

Open and Annotate PDFs from Your Vue.js App

How to add a PDF viewer to your Vue.js app by embedding PSPDFKit for Web.

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TUTORIALS  |  iOS • How To

Integrating PSPDFKit with CocoaPods

A complete step-by-step guide on how to install CocoaPods and integrate PSPDFKit.

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TUTORIALS  |  Electron • Node.js • JavaScript • How To

Running Native Code in Electron and the Case for WebAssembly

We're exploring solutions to run native code in Electron and how WebAssembly can help us with this.

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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

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TUTORIALS  |  Web • React • How To

Open a PDF in React on the Web with react-pdf

An easy and free option to render PDF pages in your React app.

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TUTORIALS  |  React Native • Android • How To

Advanced Techniques for React Native UI Components

An outline of some of the more advanced techniques you can apply to React Native UI components on Android.

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TUTORIALS  |  iOS • React Native • How To

How to Extend React Native APIs

A tutorial about how to expose native iOS APIs to React Native.

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TUTORIALS  |  iOS • How To • PDF

Generate On-Device PDF Reports on iOS

How to generate on-device PDF reports without using an internet connection.

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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.

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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.

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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.

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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.

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TUTORIALS  |  Web • WebAssembly • Tips

Deploy a WebAssembly-Based PDF Viewer to the Cloud with One Command

In this blog post, we show how easy it is to deploy our standalone, WebAssembly-powered version of PSPDFKit for Web to ZEIT’s now.sh, a cloud provider.

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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.

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TUTORIALS  |  React Native • How To • PDF

Opening a PDF in React Native

A tutorial on how to open a PDF in React Native.

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TUTORIALS  |  Web • How To

How to View a PDF in HTML

We discuss a simple approach to loading PDF files in an HTML app without using JavaScript.

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TUTORIALS  |  Web • How To • UI/UX

Theming PSPDFKit for Web

We look at how easy it is to theme PSPDFKit for Web to fit your web app’s style.

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TUTORIALS  |  Web • How To • Instant

Leverage Instant Layers and Forms to Do a Public Survey

We discuss a simple approach for doing a public survey.

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TUTORIALS  |  iOS • Android • How To

Use Vector Stamps Instead of Blurry Shapes

Tips and tricks for using vector-based stamp annotations.

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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.

TUTORIALS  |  iOS • Swift • How To

Opening a PDF in Swift

TUTORIALS  |  Android • Java • How To

How to build a screen reader