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QR Code Generator

QR Code Generator

QR code generator for URLs, Wi-Fi, contacts, email, SMS, and plain text with logo, color, size, error correction, and PNG/JPG/SVG export.

Website / URL

Protocol is prepended automatically; choose None to keep it empty

Enter content to generate QR code

Options

Colors
QR Code Generator

Quick Start

1
Enter the content you want to encode (URL, text, etc.). A preview will generate automatically
2
Adjust size, error correction, margin, and colors as needed
3
After confirming the preview, click download to save as PNG, JPG, or SVG
4
Test scanning in your actual use environment (poster, presentation, webpage, document)

Common Scenarios

Link sharing

generate codes for websites/deep links for offline/print distribution

Posters/booths

choose higher ECC (Q/H) and larger size; field‑test before printing

Slides/large screens

use ≥256 px, high contrast background, and enough quiet zone

Wi‑Fi sharing

use the Wi‑Fi template so users can connect by scanning

Business card/CV

use the Contact template to save details on scan

Extended workflow

custom qr code, qr code with logo, and wifi qr code generator can be handled in the same review flow, so you can verify results before copying or exporting.

Generation Parameters & Readability

Error correction levels: L ~7%, M ~15%, Q ~25%, H ~30% redundancy
Size: Larger sizes scan better from distance or in print. Use ≥256 px for screens, ≥512 px for printing. See FAQ ‘How to estimate minimum size vs. scan distance?’
Margin: Keep at least 4 modules of white space around the code for reliable scanning
Colors: Use high contrast (dark foreground on light background). Avoid gradients or inverted colors

Usage Advice

Keep content short: Long text creates dense codes. Use short URLs or concise text
Maintain margins: Keep at least 4 modules of white space around the code
Quick guide: Screen — M, Posters — Q/H, With logo — H
Export formats: PNG/JPG for general use, SVG for printing and scaling
Test scanning in your actual use environment (poster, presentation, webpage, document)

Limitations & Compatibility

Maximum length: up to 2953 bytes (UTF‑8). Chinese characters typically take 3 bytes/char. See FAQ ‘Why is the maximum about 2953 bytes?’
Generated QR codes are compatible with all major scanning apps
Input validation: Empty or overly long content will show an error

Privacy & Security

All processing happens locally in your browser. You can replace, clear, and generate again at any time.
Security reminder: Don't input sensitive or private information
Link safety: Verify target URLs are safe before sharing QR codes

FAQ

5

Continue with these related tools for the next step.