Generate QR codes
Create QR codes for images or links, with no server.
100% local processing: no upload to a server. Your files stay on your device.
1
Drop your files
Drop one or more files.
2
Choose a setting
Adjust options (format, quality, ratio…).
3
Download
Download the result, with the localoptim_ prefix automatically.
Drag and drop here
Drag and drop here, or use the button. You can also drop directly onto the list to reorder.
100% local processing: no upload to a server. Your files stay on your device.
Generator
Set the options, then start the generation.
100% local processing: no upload to a server. Your files stay on your device.
Preview
Preparing
Downloads
Frequently asked questions
To quickly generate a QR code for a URL, text, or shareable info.
No. Local generation in the browser (privacy-first).
Yes, adjust size/resolution for reliable scanning.
Yes: no personal data is collected or stored.
Increase size, improve contrast, and avoid margins that are too small.
For links, prefer a clean short URL and test scanning on multiple phones.
Settings
URL, text, or WiFi config. Avoid unnecessary characters.
Larger for print, smaller for web.
L is lighter. H is more robust.
Adds a white border around the QR code.
PNG for general use. SVG for vector.
Code color, then background color.
Help