QR Code Generator
Generate QR codes from URLs or text. Supports size selection, bulk generation, and PNG download.
QR Code Generator
Drag and drop QR code image or click to select
Supports PNG, JPG, GIF (screenshots too)What is a QR Code Generator?
A QR code (Quick Response Code) is a type of two-dimensional barcode that can be scanned with a smartphone camera to quickly access embedded information. Developed by Denso Wave in Japan in 1994, QR codes are now widely used across various fields including payments, marketing, product information, and contact exchange.
This QR code generator allows you to create QR codes for URLs, text, WiFi connection info, and contacts (vCard) for free. With extensive customization options including dot style, eye (finder pattern) style, colors, and logo insertion, you can create unique QR codes that match your brand identity.
Key Features
- Multiple Data Formats: Generate QR codes for URLs, plain text, WiFi connection info, and contacts (vCard) – four different types.
- Dot Style Customization: Choose from square, rounded, or circle shapes for the dots that make up the QR code to create unique designs.
- Eye (Finder Pattern) Style: Customize the position detection patterns at the three corners of the QR code for a more refined look.
- Color Customization: Freely set foreground (dot) and background colors to match your brand colors.
- Logo Insertion: Add your brand logo or image at the center to increase recognition. Error correction is automatically set to the highest level (H) when a logo is inserted.
- Margin (Quiet Zone) Adjustment: Choose from none, normal, wide, or extra wide for the margin around the QR code.
- Error Correction Level Selection: Choose from L (7%), M (15%), Q (25%), or H (30%) to optimize for your use case.
- Multiple Output Formats: Download as PNG or vector SVG, or copy directly to clipboard.
- Bulk Generation: Create up to 50 QR codes at once for efficient batch processing.
- QR Code Scanner: Recognize and read QR codes from image files. Supports screenshots with multi-scale, grayscale, and inverted color processing for improved recognition rates.
What is Error Correction?
Error correction allows information to be recovered even if parts of the QR code are damaged or obscured. Using the Reed-Solomon error correction algorithm, higher levels can recover more data but result in denser QR codes.
- L (Low) – 7%: Lowest recovery capacity. Produces the simplest QR code, suitable for environments with no damage expected.
- M (Medium) – 15%: Default value. A balanced choice suitable for general use.
- Q (Quartile) – 25%: High recovery capacity. Recommended when printed materials may experience minor damage.
- H (High) – 30%: Maximum recovery capacity. Recommended for logo insertion or harsh environments.
WiFi QR Code Usage
WiFi QR codes provide an easy way to share your WiFi password with guests and visitors. Simply scan the QR code with a smartphone to connect automatically. Useful for cafes, hotels, offices, and homes.
vCard (Contact) QR Code Usage
vCard QR codes can be used instead of business cards or printed on business cards. When scanned, contact information including name, phone, email, company, address, and website is saved directly to the smartphone’s address book.
Frequently Asked Questions
Is there a fee to generate QR codes?
No, this QR code generator is completely free. You can use it without registration and without limits, and no watermarks are added to generated QR codes. It’s free for commercial use as well.
Will adding a logo make the QR code unscannable?
QR codes with logos can still be scanned normally. When a logo is inserted, the error correction level is automatically set to the highest (H – 30%), allowing information to be recovered even if about 30% of the center is covered. However, if the logo is too large or has low contrast with the QR code, recognition rates may decrease, so please test before use.
Will changing dot and eye styles affect scanning?
Yes, QR codes scan normally even with changed dot styles (square, rounded, circle) and eye styles. QR code readers recognize the position and pattern of dots, not their exact shape. However, extreme design modifications may reduce recognition rates on some older scanners, so please test before actual use.
Should I download PNG or SVG format?
Choose based on your intended use. PNG is a raster image suitable for digital uses like websites, social media, and email. SVG is a vector image that maintains quality at any size, making it ideal for print materials (posters, business cards, banners, etc.). For high-quality printing, SVG is recommended.
Will generated QR codes work permanently?
QR codes generated with this tool are static QR codes with no expiration date – they work permanently. The information is encoded directly in the QR code itself, so it doesn’t depend on any external server or service. However, for URL QR codes, if the webpage is deleted or the address changes, it may become inaccessible.
Is there a limit to how much information a QR code can hold?
Yes, there are limits to how much information a QR code can store. Maximum capacity varies by error correction level: up to 7,089 characters for numbers only, 4,296 for alphanumeric, and 2,953 bytes for binary data. If too much information is stored, the QR code becomes complex and recognition rates may decrease.
The QR code scanner isn’t recognizing my image
This scanner uses various techniques including multi-scale processing, grayscale conversion, and color inversion to improve recognition rates. If it still doesn’t work, please check: 1) Image resolution isn’t too low, 2) QR code isn’t severely tilted or distorted, 3) Sufficient contrast between QR code and background, 4) Image isn’t too blurry or noisy.