Dynamsoft Developer Blog

Tauri is a framework for building desktop apps for all major platforms. Developers can integrate any front-end framework that compiles to HTML, JS and CSS for building their user interface. The backend of the application is a Rust-sourced binary with an API that the front-end can interact with. Different from...

Ionic is a popular framework to build cross-platform mobile web apps. In this article, we are going to build an Ionic Angular app based on Cordova to scan the MRZ codes which are often found on passports. The JavaScript version of Dynamsoft Label Recognizer is used to provide the ability...

Quasar is a Vue.js-based framework, which allows web developers to quickly create responsive websites/apps, while Capacitor is a runtime for creating cross-platform iOS, Android, and Progressive Web Apps with JavaScript, HTML, and CSS. In this article, we are going to use the two to create a QR code scanner using...

Dynamsoft Label Recognizer is a JavaScript MRZ SDK, which allows developers to build web applications to recognize passport, Visa, ID card and travel documents. By combining Dynamsoft Label Recognizer and Dynamsoft Camera Enhancer, it is easy to build real-time MRZ recognition applications with a camera. This article aims to wrap...

In tasks like barcode scanning and text recognition, we often need to limit the scan region so that only the desired info is extracted. In this article, we are going to build a viewfinder web component as the following which shows which area will be processed. Stencil.js is used to...

In the previous article, we’ve built a React camera component. In this article, we are going to extend the camera component to create a React barcode and QR code scanning library using Dynamsoft Barcode Reader. Links related to Dynamsoft Barcode Reader Create a React Barcode and QR Code Scanning Library...

With the getUserMedia API, we can access the camera in web browsers, which makes it possible to do computer vision tasks like barcode scanning. In this article, we are going to build a camera component for React with hooks. Build a React Camera Component with Hooks We are going to...

Web Components are a set of features that provide a standard component model for the Web allowing for encapsulation and interoperability of individual HTML elements. 1 We can define a custom element to use in any HTML environment, with any framework, or with no framework at all. Stencil is a...

In the previous article, we’ve given a brief demonstration on how to use the capacitor-plugin-dynamsoft-barcode-reader to create a cross-platform QR code scanner using Ionic React. In this article, we are going to use Ionic Vue to create such a QR code scanner. Screenshots of the final results: Home Scanning Home...

The WebView component included in modern mobile operating systems is becoming more and more powerful. For example, it supports showing the camera preview using getUserMedia and has support for WebAssembly, which makes it possible to use Dynamsoft Label Recognizer to create a text scanner to recognize text like passports’ machine-readable...

iOS has added support for getUserMedia in WKWebView since iOS 14.3 and WebAssembly since iOS 11. So it is possible to use the JavaScript version of Dynamsoft Barcode Reader to scan barcodes and QR codes in WKWebView. In this article, we are going to build a demo app to illustrate...

Google Chrome has getUserMedia support since v53 and WebAssembly support since v57, which makes it possible to use Dynamsoft Barcode Reader to scan barcodes and QR codes in the web context. The WebView component included in modern Android uses Chrome as its backend, so we can also run a barcode...

In many barcode scanning situations, we only need to select one barcode while there are many other barcodes around it. How to avoid scanning unwanted barcodes and only get the barcode result we want? In this article, we are going to talk about ways to select one barcode from many....

In the previous article, we’ve talked about how to use the Barcode Detection API to create a web QR code scanner. However, not many browsers support the API. So in this article, we are going to write a polyfill for the Barcode Detection API with the JavaScript version of Dynamsoft...

The Web Platform Incubator Community Group has published a Shape Detection API specification. The API aims at detecting features like faces and QR codes from images. It is still in draft status and has limited browser support. In this article, we are going to use the Barcode Detection API included...

Dynamic Web TWAIN has a new scanDocument API since v17.2, which makes it easy to capture documents using mobile cameras with its document border detection feature. Along with the RemoteScan feature that connects physical document scanners, we can now build a decent mobile document scanner with web technologies. In this...

If you are looking for a JavaScript barcode and QR code scanner SDK, Dynamsoft JavaScript Barcode SDK is no doubt the best. The SDK enables developers to quickly build web barcode and QR code scanner applications with a few lines of code. This article gives you a better understanding of...

While scanning barcode and QR code from camera stream, we need to firstly convert color images encoded in RGB or YUV to grayscale images, then convert grayscale images to binary images before decoding. Operating image pixels takes much CPU time. To speed up image processing, we can utilize GPU. Dynamsoft...

On mobile platforms, HTML5 is not only supported by web browsers, such as Chrome, Edge, Safari, Firefox, and Opera, but also web view UI component that used for building native apps. Therefore, even though you are only familiar with web development, you can easily create excellent mobile apps for Android...

In the previous article, we’ve given a brief demonstration on how to use the capacitor-plugin-dynamsoft-barcode-reader to create a cross-platform QR code scanner using web technologies with Capacitor. In this article, we are going to take a step further to create an Ionic React QR Code Scanner. A preview of the...

Recently, Dynamsoft compiled the C++ OCR SDK to a web assembly module. It aims to help web developers to build web passport MRZ scanner applications using HTML5 and JavaScript. This article shows how to build web applications to read MRZ information from passport images and scan passport MRZ information with...

The MediaDevices.getUserMedia() is the only API used to access cameras from web browsers. Although it is simple, to implement a complete web camera viewer, there are still a lot of work to do. There was no existing JavaScript camera widget available until Dynamsoft released the Camera Enhancer library recently. Now,...

Capacitor is an open source native runtime created by the Ionic team for building Web Native apps. We can use it to create cross-platform iOS, Android, and Progressive Web Apps with JavaScript, HTML, and CSS.1 As an alternative to Cordova, Capacitor delivers the same cross-platform benefits, but with a more...

Apache Cordova is a tool to create cross-platform apps from standard web technologies (HTML, CSS, and JavaScript). Its primary purpose is to provide a bridge for native device API access and to bundle for distribution.1 In this article, we are going to use Cordova to build a QR code scanner...

Scalable Vector Graphics, SVG, is a W3C XML dialect to mark up graphics1. SVG can be created dynamically with JavaScript and injected into the HTML DOM2. Using SVG, it is very easy to draw a graphics in a web page. Below is a polygon example: <svg width="100" height="100" version="1.1" xmlns="http://www.w3.org/2000/svg">...

QR code is useful to transfer data across different devices. An Android device can exchange data with an iOS device through a QR code. It does not require setting up a wireless network and does not have the hassle of pairing using Bluetooth. As it is a screen-camera solution, it...

Updated in 2021: The Dynamsoft Barcode Reader now has a client-side JavaScript SDK which makes it possible to read barcodes from within the browser. Learn about the JavaScript SDK The Dynamsoft Barcode Reader now has mobile native SDKs supporting Android and iOS. The Dynamsoft Barcode Reader now has an official...

Cameras are now ubiquitous in our life. Every mobile phone has built-in cameras which can shoot nice photos. As for document scanning, there is document camera (also called overhead scanner) which is adjustable and has high resolution. Image source: https://www.amazon.com/Conferencing-Recording-Classroom-Real-time-Definition/dp/B08V4WLPX1/ A document camera has the following benefits: Users don’t have...

Originally designed for the automotive industry1, QR code (abbreviated from Quick Response code) has become popular in various usage scenarios. QR codes can encode richer content than 1D barcodes, from website URLs to even a small image. They can be displayed on screens and printed on posters, package boxes, etc....

Dynamic Web TWAIN has added some exciting features related to the mobile platform since its version 16. Document capturing via mobile cameras, 16.0 PDF Rasterizer mobile edition, 16.0 LoadImageEx supports mobile platform, 16.1 Acquiring images from a remote scanner, 16.1 The scanDocument API which makes it easy to call a...

As the world’s top scanner programming SDK, Dynamic Web TWAIN features a lot of compelling functionalities. By upgrading to the latest version, any web document scanning app built with Dynamic Web TWAIN can be compatible with mobile devices seamlessly. What will happen if you invoke the scanner control APIs on...

In India, the Aadhaar card is used to store people’s biometric and demographic data. This article shares how to create a simple web app to decode the QR code printed on the Aadhaar card using Dynamsoft JavaScript SDK, as well as how to extract the information from the barcode results....

Vaadin platform, similar to GWT (Google Web Toolkit), is a set of web components that allow developers to implement HTML5 web apps using the Java programming language. This tutorial aims to help developers to create a simple web document scanning app with Vaadin and Dynamic Web TWAIN SDK. Setting Up...

Last week, I had successfully built JavaScript and WebAssembly ZXing barcode SDK. In this post, I will use the pure JavaScript barcode SDK to create a simple client-side HTML5 barcode reader app, which works in any WebRTC supported web browsers. What If ZXing Cannot Satisfy Performance Requirements? Try Dynamsoft JavaScript...

If you always stay tuned to Dynamsoft Barcode SDK, you should have noticed that starting with version 5.1, the SDK includes a JavaScript library which is similar to Dynamic Web TWAIN. The article aims to help developers get familiar with the relevant JavaScript Barcode APIs and build web barcode reader...

It is known that getUserMedia, the API defined by WebRTC, is the main method for accessing media capture devices such as webcam and microphone in web pages. The compatible desktop web browsers include Chrome, Firefox, Opera, and Edge. This article will share the resources for learning how to capture and...

In this tutorial, I’d like to share how to implement a simple Web application for document imaging and uploading with Dynamic Web TWAIN SDK (DWT) and Node.js. Download and Installation Dynamic Web TWAIN download Node.js download Creating a Web Server with Node.js Run your command line tool to install two...

Think of the game, we know that we have 4 teams in play. At a given time, all we need to see is where these 16 planes are. For the game engine, all it needs to know is the coordinates of these 16 planes. So we need to create another...

In the previous articles, I shared how to implement a .Net WebSocket server with SuperWebSocket. Today, I’d like to continue the series WebSocket: How-to, talking about how to implement a WebSocket server in Java. What is Jetty? “Jetty provides a Web server andjavax.servlet container, plus support forSPDY, WebSocket, OSGi, JMX, JNDI,...

Today we start making our Modern Ludo Game from scratch. The first thing to do is draw the board. For this part, we’ll simply use the in HTML5. The MarkUp is very simple: <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>ModernLudo</title> <link rel="stylesheet" type="text/css" href="Styles/modernludo.css" /> </head> <body> <div id="playGround" style="display:none;"> <div...

A Chrome extension is a package of files including a manifest file, HTML files, JavaScript files and other resources. With extensions, we can add more functionalities to empower Chrome. Getting Started with Chrome Extension Chrome Extension Overview Chrome Extension Debugging Chrome Extension Samples Anatomy of Web Page Screenshots The manifest...

In this tutorial, I want to make a more complicated WebSocket demo, which enables me to capture images from scanners on server side, and view the images in desktop web browsers or mobile web browsers. Here is the flowchart:   Prerequisites Read Image Transmission between a HTML5 WebSocket Server and...

HTML5 WebSocket facilitates the communication between web browsers and local/remote servers. If you want to learn a simple websocket example, creating a WebSocket Server in C## and a Web client in JavaScript, you can refer to SuperWebSocket, which is a .NET implementation of Web Socket Server. In this article, I...

Last time, I shared my experience about how to use JavaScript saving HTML canvas data to local disk in Chrome. In this tutorial, I would like to share how to save HTML canvas data to remote service with JavaScript and PHP. Ads Powered by Dynamsoft Uploading canvas data is a...

Recently, I spent several days implementing a web music player. Just for fun. With the player, I can listen to songs that are stored in my home computer. While at work, I just need to start a remote service at my house and then open the browser and input the...

In my daily life, I enjoy taking photos with my smartphone and uploading them to various websites. So I started thinking, “Is it possible to implement these functions in a web browser?” Fortunately, the new HTML5 SDK is capable of uploading local images or captured images to web servers. Everything...

In HTML5, there is a new tag <canvas>, which is used to draw graphics via JavaScript. In this tutorial, I would like to share how to draw images on canvas, and how to save the canvas data to local disk by clicking button. Ads Powered by Dynamsoft Draw Images on...

In the previous blog post, I have glanced at HTML5. Probably many people have already experienced some cool functions of HTML5. In this article, I would like to share how to invoke Webcam in HTML5. While strolling through StackOverflow, I found there are many questions about how to display webcam...