Developer tool
Your files never leave your device
Check your Network tab and see
Work starts the moment you drop a file
No daily limit, no sign-up, no watermark
There is no continuous camera WebRTC preview on this page.
Pixels stay in the tab. jsQR is loaded when you pick a file.
QR only — not PDF417 or Aztec.
That is the promise behind every tool here. Files are read in your browser tab, processed there, and discarded when you close it — never uploaded to our servers.
Generate high-quality SVG and PNG QR Codes instantly in your browser.
QR for WPA network join string.
Contact card as QR.
Encode or decode query strings with encodeURIComponent — in your browser, nothing uploaded.
Encode to Base64 or decode from Base64 instantly in your browser.
Test, visualize, and debug Regular Expressions instantly in your browser.
