Open Source JavaScript QR Code Generators

Firefox add-on (desktop and Android) to create beautiful QR codes and scan them, entirely inside the browser: no external server, no account, no ads, no data collected. Wi-Fi, contacts, events, SEPA payments, custom designs verified before download, PNG/SVG export, batch ZIP, camera scanner with warnings on deceptive links. Version 2.0 rewritten from scratch (Manifest V3).

A QR code scanner online and generator with 4 option 1- QR code scanner from Image 2- QR Code scanner from camera 3- Free Android app on Play Store 4- Free QR code generator with different styles and options

DScan is a decentralized storage and file sharing tool. DScan allows you to quickly upload files as well as folders to IPFS by using web3.storage and receive a "decentralized QR code" with IPFS CID. Later you can customize and share the QR code or hosted gateway link with everyone for easy and decentralized file sharing. Because of web3.storage, the content can be accessed over IPFS without the user installing and setting up a local instance of Kubo.

QPyDesk is a code editor, and real-time QR code generator for QPython. It is a Python code editor with syntax highlighting that also generates the QR code that represents said code in real time. This application also allows you to print the generated QR code to distribute the created application. However, because QR codes have a limited storage capacity, if the code is very long, QPyDesk creates a QR code that is only valid while the application is running, that is, the QR code generated in this case is useless for distribute the application, but it is still useful to check the operation of the script while it is encoded from the computer. When these circumstances occur, QPyDesk notifies the user and disables the print button. QPyDesk gives dynamism during the development of applications for QPython / Android, since it takes advantage of the QPython QR code reader to work comfortably from the computer for the android device.

ToolSparkr - 35+ free browser-based developer tools. No signup required, no data uploaded to servers. Everything runs in your browser. Tools: JSON Formatter & Validator, Base64 Encoder/Decoder, Password Generator, QR Code Creator, MD5/SHA Hash Generator, Color Converter, URL Encoder/Decoder, UUID Generator, DNS Lookup, WHOIS Lookup, IP Lookup, HTTP Status Checker, HTML Entity Encoder, Morse Code Converter, CSS Minifier, Bcrypt Generator & more. Built for developers, designers, marketers, and power users who need fast, reliable utilities without switching between multiple websites. Website: https://toolsparkr.com All Tools: https://toolsparkr.com/tools Blog: https://toolsparkr.com/blog No registration required. No data leaves your browser. Built on PHP 8.1 with a focus on speed and privacy, everything runs in your browser. Open Source: https://github.com/Ali83128/toolsparkr

jquery-qrcode is a small jQuery plugin for generating QR codes directly inside the browser. It lets developers add QR code output to a webpage without calling an external service or downloading a remote image. The plugin is designed to be lightweight, with a minified and compressed footprint of less than 4 KB. Its basic usage is simple: include the script, create a container element, and call the QR code method with text or options. Developers can configure dimensions such as width and height when generating a code. It is best suited for older jQuery-based sites, simple web utilities, landing pages, and legacy projects that need fast client-side QR generation.