A fast, ad-free, privacy-respecting QR code generator.
Runs entirely in your browser.
No tracking. No ads. No data is sent or stored.
Open source under MIT license.
QRTurbo.app is deployed on Cloudflare Pages and runs entirely at the edge. The app is served as static assets from Cloudflare's global network, with no origin server or backend API required for QR code generation.
- Create QR codes instantly in your browser
- Generate QR codes for URL/Text, vCard, MeCard, WiFi, SMS/Phone, Email, Calendar Events, Locations, Social Media, WhatsApp, and App Links
- Customize foreground and background colors
- Add an optional logo with adjustable size and margin
- Add a frame with a call-to-action label such as "Scan me"
- Choose dot styles, corner square styles, and corner dot styles
- Select QR code size: 512px, 1024px, 2048px, or 4096px
- Error correction levels: L, M, Q, H
- Export formats: PNG, SVG and PDF
- Light and dark themes
- Multilingual UI with 24 supported languages, each pre-rendered at its own URL
- Landing pages for every QR code type in every language
- No external API calls
- Works fully offline after initial load
- Supports UTF-8 and long messages
- Download the QR code as an image
The HTML pages in Public/ are generated. Edit site/template.html for the page structure,
site/content/<lang>.js for page texts (titles, landing pages, comparison and FAQ), and
Public/js/i18n/ for interface strings. Then regenerate every language and QR code type page and
sitemap.xml:
npm run buildnpm run build:check and the static tests fail when the committed pages are out of date.
Prerequisites are Node.js 22.5 or newer and npm.
From a clean checkout, install the locked dependencies and the tested browsers with their system dependencies, then run the complete acceptance suite with one command:
npm ci && npx playwright install --with-deps chromium webkit && npm run test:allAfter that initial setup, run only the fast Node and static checks with:
npm run test:fastRun only the browser end-to-end tests with:
npm run test:e2eGenerate the diagnostic production-code coverage report with:
npm run test:coverageThe report contains Public/js/app.js and Public/sw.js. It intentionally excludes the vendor
QR library and test harnesses, and it does not enforce an arbitrary percentage threshold.
The browser suite runs fully on desktop Chromium. Pixel 7 runs one responsive mobile smoke test, while WebKit runs the core generation, PNG/SVG download, and logo/FileReader paths. PWA cache tests run once on desktop Chromium.
Run the complete acceptance suite again without reinstalling dependencies:
npm run test:allThis tool does not send your input to any server. Everything happens locally in your browser. Logo images are processed using the browser's FileReader API - they never leave your device.
MIT License. This project includes the qr-code-styling library. Third-party copyright and license notices are listed in THIRD_PARTY_NOTICES.md.
Timo Heimonen (timo.heimonen@proton.me)