QR Code Generator
Create QR codes for URLs, Wi-Fi setup strings, or short text. Download PNG and test scans at the size you will print.
Leave quiet margins around the code; cropping breaks reliability on some scanners.
Enter text or a URL above to generate a QR code.
How to use
- Enter text or paste a URL in the input box.
- Select size (128×128, 256×256, or 384×384 pixels).
- The QR code updates automatically. Use Download PNG to save the image.
- Use Share URL to copy a link that reopens this page with your content (
?text=).
1QR codes bridge physical and digital
Quick Response codes encode text—often URLs, Wi-Fi setup strings, or payment identifiers—that camera apps can read without typing.
Error correction levels trade redundancy for resilience: higher levels survive partial damage or logo overlays at the cost of denser modules.
- Test scans under real lighting and on both iOS and Android before printing thousands of posters.
- Short URLs produce simpler patterns that scan faster at small print sizes.
2Design and branding
Quiet zones (empty margin) around the code are part of the spec; trimming them breaks reliability in some scanners.
Inverted color schemes can work but reduce contrast margins; prefer dark modules on light backgrounds for accessibility.
3Security awareness
A QR code can point to a phishing domain as easily as a legitimate one; teach users to verify the destination after the scan.
For one-time secrets, pair QR usage with short expiry and server-side invalidation so a leaked photo is less dangerous.
4Marketing and operations
Event posters, packaging, and restaurant menus use QR codes for URLs. Test scan distance and lighting; a dense code on a glossy poster may fail under fluorescent light.
5Wi-Fi and vCard payloads
QR standards define formats for joining Wi-Fi networks and sharing contacts. Keep payloads short; long strings produce dense patterns that are harder to scan.
6Quick checklist for QR codes
Scan test prints at the size you will ship. Leave quiet margins; do not crop them for aesthetics.
- Use HTTPS URLs in production codes.
- Review destination domain after scan during security review.
Examples
URL for a landing page
Keep URLs short for reliable scans on small prints.
https://example.com/docs/welcomePlain text Wi-Fi (format varies)
Some apps expect WIFI:T:WPA;S:Network;P:password;; style payloads.
WIFI:T:WPA;S:MyNetwork;P:secret;;