Free QR Code Generator
Create custom QR codes for URLs, WiFi networks, contact cards, and more. Choose your format, customize colors, and download instantly.
Quick Tips
- • Higher error correction allows QR code to work even if partially damaged
- • SVG format is best for printing (scales without quality loss)
- • PNG format is best for digital use (websites, apps)
- • Keep it simple - shorter text creates simpler, more scannable QR codes
Features
Multiple QR Types
Generate QR codes for URLs, WiFi credentials, emails, phone numbers, SMS, vCards, and plain text.
Custom Colors
Customize dark and light colors to match your brand. Use hex color codes or the color picker.
Multiple Formats
Download as PNG for digital use, SVG for printing, or UTF8 text for terminal applications.
Error Correction
Choose from 4 error correction levels (7%-30%). Higher levels allow QR codes to work even if partially damaged.
Flexible Sizing
Generate QR codes from 100px to 1000px. Adjust margins for proper scanning distance.
Detailed Info
View QR code version, modules, capacity, and other technical details for your generated code.
Common Use Cases
Business & Marketing
QR codes bridge the gap between physical and digital marketing. Place them on business cards, flyers, posters, product packaging, or storefront windows to direct customers to your website, social media, or promotional content.
- Link to your website or landing page
- Share contact information via vCard
- Promote social media profiles
- Enable contactless payments
WiFi Access
Create WiFi QR codes for easy network access in offices, cafes, hotels, or events. Guests can scan and connect without typing complicated passwords. Format: WIFI:T:WPA;S:NetworkName;P:Password;;
- Eliminate password sharing friction
- Update network credentials by regenerating QR codes
- Display on reception desks or table tents
- Include in welcome packets
Events & Ticketing
QR codes streamline event check-ins, provide access to digital tickets, and share event information. Attendees can quickly access schedules, maps, or feedback forms by scanning codes placed throughout the venue.
- Ticket validation and entry management
- Share event schedules and venue maps
- Collect attendee feedback
- Provide session or speaker information
Product Information
Manufacturers and retailers use QR codes on products and packaging to provide detailed information, user manuals, assembly instructions, warranty registration, or authenticity verification.
- Link to digital user manuals and guides
- Provide warranty registration portals
- Share product videos and tutorials
- Enable authenticity verification
Frequently Asked Questions
What is a QR code and how does it work?
A QR (Quick Response) code is a two-dimensional barcode that stores information in a grid of black and white squares. When scanned with a smartphone camera or QR reader app, it quickly decodes the information and performs an action like opening a website, connecting to WiFi, or saving a contact. QR codes can hold up to several thousand characters depending on the version and error correction level.
What error correction level should I choose?
Error correction allows QR codes to remain scannable even if partially damaged or obscured. Low (7%) is suitable for clean, digital uses. Medium (15%) is the default and works well for most purposes. Quartile (25%) and High (30%) are recommended when the code might get dirty, damaged, or you're overlaying a logo. Higher correction increases code complexity, so use the lowest level that meets your needs.
Should I use PNG or SVG format?
Use PNG for digital applications like websites, presentations, and screen displays. PNG files are raster images with a fixed resolution. Use SVG for printing on business cards, posters, banners, or any physical medium. SVG files are vector graphics that scale infinitely without quality loss. SVG files are also smaller and load faster on websites, but may require special handling.
Can I customize QR code colors safely?
Yes, but maintain high contrast between dark and light modules for reliable scanning. The dark modules (traditionally black) must be significantly darker than the light modules (traditionally white). Avoid using very light colors for dark modules or very dark colors for light modules. Also avoid red dark modules, as some scanners struggle with red tones. Test your custom QR code with multiple devices before printing or distributing.
How do I create a WiFi QR code?
Select "WiFi Network" from the QR code type options. The format is: WIFI:T:WPA;S:YourNetworkName;P:YourPassword;; Replace "WPA" with your security type (WPA, WEP, or leave blank for open networks), "YourNetworkName" with your SSID, and "YourPassword" with your password. The semicolons and double semicolon at the end are required. Don't include spaces unless they're part of your actual network name or password.
Are QR codes generated on this site secure?
Yes, completely secure. All QR code generation happens entirely in your browser using JavaScript. Your data never leaves your device or gets sent to any server. The QR codes themselves don't have security features - they're just encoded text. If you encode sensitive information (like WiFi passwords), keep the QR code secure just as you would the password itself.
About QR Codes
QR codes were invented in 1994 by Denso Wave, a Japanese automotive company, to track vehicle parts during manufacturing. The "Quick Response" name reflects their ability to be scanned and decoded rapidly compared to traditional barcodes. Unlike one-dimensional barcodes that store data horizontally, QR codes store data both horizontally and vertically, allowing them to hold significantly more information in a smaller space.
QR Code Structure
A QR code consists of several key components. The three large squares in the corners are position markers that help scanners orient the code correctly. The smaller square in the bottom-left corner (if present) is an alignment marker for larger codes. Timing patterns help determine the code's size and structure. Format information describes the error correction level and mask pattern used. The data region contains your actual encoded information. Error correction codes allow the QR code to remain functional even if up to 30% of it is damaged, depending on the correction level chosen.
Choosing the Right Size
QR code size depends on two factors: how far away the scanner will be, and how much information you're encoding. A general rule is the scanning distance should be no more than 10 times the QR code width. For a business card that will be scanned from 10-20cm away, a 2-3cm QR code works well. For a poster viewed from 1-2 meters, use a 10-20cm code. Encoding more information creates more complex codes that require larger sizes or closer scanning distances.
Best Practices
Always test your QR codes with multiple devices and scanning apps before mass production. Maintain a margin of at least 4 modules (the small squares) around the code - this "quiet zone" helps scanners identify code boundaries. When printing, ensure high resolution to prevent pixelation or blurriness. If overlaying a logo in the center, keep it small (under 30% of the total area) and use high error correction. Provide context near the QR code so users know what they're scanning - a simple "Scan for menu" or "Scan to connect" increases scan rates significantly.
Common Mistakes to Avoid
Don't use low-contrast color combinations that make the code hard to scan. Avoid placing QR codes on curved or reflective surfaces that distort the pattern. Don't make codes too small - if modules become tiny, smartphone cameras struggle to resolve them. Never link to HTTP URLs instead of HTTPS, as users are increasingly wary of insecure connections. Don't forget to test links before distributing printed materials - broken QR codes frustrate users and damage credibility.