What is QR Code Generator?
QR Code Generator is a convenient online tool that encodes text, URLs, WiFi passwords, phone numbers, emails, and other information into QR code images. Customize size (100x100 to 1000x1000 pixels), foreground/background colors, and error correction level (L/M/Q/H — level H tolerates up to 30% damage). Real-time preview with one-click HD PNG download. All generation runs locally in your browser using the qrcode-generator library, supporting up to 4000 characters. Perfect for marketing, business cards, WiFi sharing, product packaging, and event check-in. Generated QR codes are scannable by all mainstream QR scanner apps.
Use Cases
- ◆Website URL QR codes (scan to visit webpage)
- ◆WiFi password sharing (scan to auto-connect)
- ◆Business card QR codes (contains name, phone, email)
- ◆Product packaging QR codes (scan for manual or anti-counterfeit verification)
- ◆Event check-in QR codes (scan to check in or enter lottery)
- ◆Payment QR codes (scan to transfer or pay)
How to Use
- 1Select QR code type: Text, URL, WiFi, Phone, Email, etc.
- 2Enter content in the input box. For example, select "URL" type and enter "https://www.example.com"
- 3Customize QR code style: adjust size (default 300x300px), foreground color (default black), background color (default white), error correction level (default M, recommend H for logo overlay)
- 4Real-time preview shows the generated QR code. If content is wrong, modify it instantly
- 5Click "Download PNG" to save the QR code image locally. Image is HD PNG format, ready for print or digital media
- 6💡 Tip: To embed a logo, select error correction level H (highest), then overlay the logo image in the center of the QR code
Features
- ✓Multiple encoding types (Text/URL/WiFi/Phone/Email/vCard)
- ✓Custom size (100x100 to 1000x1000 pixels)
- ✓Custom colors (foreground and background)
- ✓Four error correction levels (L 7%/M 15%/Q 25%/H 30%)
- ✓Real-time preview (instant update on content change)
- ✓HD PNG output (transparent background support)
- ✓Browser-based generation (no data upload)
- ✓Supports Chinese and Unicode characters
FAQ
What is a QR code generator?
A QR code generator is an online tool that encodes text, URLs, WiFi passwords, and other information into QR code images. Input is text content, output is a PNG QR code image. Suitable for marketing, information sharing, event check-in, and more.
What content types are supported?
Multiple types: plain text (up to 4000 characters), URL (website links), WiFi (SSID + password + encryption), phone numbers, emails, SMS content, vCard (business card info including name/phone/email/address).
What is error correction level? Which should I choose?
Error correction is the ability to scan a QR code even when partially damaged. Level L (7%) for clean scenarios, M (15%) is default recommended, Q (25%) for slight obstruction, H (30%) for logo overlay. For general use, M is fine.
What size should the QR code be?
Depends on use case. Screen display (web/mobile): 200x200 to 300x300px. Business card print: 300x300 to 400x400px. Large posters: 500x500 to 1000x1000px. Larger size = clearer print.
Can I customize QR code colors?
Yes. Customize foreground (pattern) and background colors. Use high contrast (black on white, blue on white). Avoid light-on-light (yellow on white) as it becomes hard to scan.
Is the generated QR code uploaded anywhere?
No. All QR code generation runs locally in your browser using the qrcode-generator library. Content is never uploaded to any server, safe for generating QR codes with sensitive info like WiFi passwords.
How do I embed a logo in the QR code?
Select error correction level H (highest, supports 30% obstruction), generate the QR code, then use an image editor to overlay the logo in the center. Keep logo area under 30% of total QR code area, otherwise it may not scan.
Is this tool free?
Completely free. No signup, no login, no usage limits, no feature restrictions. Just open the page and use all functions.