QR3 min
QR Codes: Content, Errors, and Scanning
Understand static QR payloads, error correction, quiet zones, sizing, privacy, and how to verify a code before printing it.
Read more→QR Code Generator
Free QR code generator: create custom QR codes for text, URLs, WiFi, and contacts. Download as PNG or SVG instantly. No sign-up required. Try it free.
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Free Online QR Code Generator
Generate QR codes for text, URLs, WiFi networks, and contact cards (vCard). Download as PNG or SVG with custom colors and sizes.
The code is generated in your browser without sending its content to ToolsFree. Review the result before sharing credentials or contact details.
Available QR types
Free text, URLs, WiFi credentials (WPA/WEP), vCard contact cards with name, phone, and email.
Types of QR Codes
Static QR codes encode information directly and cannot be changed after generation. Dynamic codes redirect through an intermediary URL and depend on a third-party service. ToolsFree generates static codes without that redirect service. You can encode text, URLs, WiFi credentials, and vCard contacts.
QR Code Best Practices
To ensure your QR code is reliable and easy to scan, keep these recommendations in mind. Maintain high contrast between the code and its background: ideally a dark code on a light background. Avoid overly light colors or low-contrast combinations, as they make it difficult for scanners to read. The minimum recommended print size is 2 x 2 cm; for posters or billboards, scale up proportionally. Always leave a white margin (quiet zone) around the code at least 4 modules wide. Error correction is another key factor: a higher level (like H, which can recover up to 30% of data) makes the code more resistant to damage or dirt, but also makes it denser. For long URLs, consider using a link shortener before generating the QR to reduce pattern complexity.
Frequently Asked Questions
- Are QR codes permanent?
- Yes, static QR codes generated here never expire. They work as long as the encoded information is valid.
- Is the QR generator free?
- Yes, it's 100% free with no watermarks or limitations. Download as PNG or SVG.
- Can I customize the colors?
- Yes, you can change the code color and background color. You can also adjust the size.
- Is my data sent to any server?
- No, all QR codes are generated locally in your browser. Your information never leaves your device.
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