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How to Use
- 1Choose a QR content type: URL, plain text, email address, phone number, SMS message, or Wi-Fi credentials. Each type has specific fields optimized for that format.
- 2Fill in the required fields. For URLs, paste the full link including https://. For Wi-Fi, enter the network name (SSID), password, and encryption type (WPA/WPA2 is most common).
- 3Preview the QR code instantly — it updates in real time as you change the content or settings.
- 4Open advanced options to customize the appearance: dot style (square, rounded, or dots), foreground and background colors, gradient fills, and margin size.
- 5Optionally upload a center logo for branding. The QR code automatically increases error correction to ensure it remains scannable even with the logo covering part of the pattern.
- 6Download as PNG for digital use (websites, social media, messaging) or SVG for high-quality print materials (business cards, flyers, posters, packaging).
About QR Code Generator
The QR Code Generator creates scannable QR codes for URLs, plain text, email addresses, phone numbers, SMS messages, and Wi-Fi network credentials. QR (Quick Response) codes were originally developed by Denso Wave in 1994 for tracking automotive parts, but they have since become the standard bridge between physical and digital content — appearing on everything from restaurant menus and payment terminals to product packaging and event tickets.
Wi-Fi QR codes are one of the most practical use cases. Instead of dictating a long, complex Wi-Fi password to guests, you can generate a QR code that encodes the network name, password, and encryption type. When someone scans it with their phone camera, they connect automatically — no typing required. This is widely used in hotels, cafes, co-working spaces, Airbnb properties, and home networks with complex passwords.
The customization options let you create branded QR codes that match your visual identity. Choose from dot styles (square for a classic look, rounded for a softer feel, or dots for a modern aesthetic), set custom foreground and background colors, and apply gradient fills. Upload a center logo — your company logo, social media icon, or any image — and the tool automatically increases the error correction level to compensate for the area the logo covers, ensuring the QR code remains reliably scannable.
QR codes use Reed-Solomon error correction, the same algorithm used in CDs, DVDs, and satellite communications. This means a QR code can lose up to 30% of its pattern (at the highest error correction level) and still scan correctly. This redundancy is what makes logos, color customization, and even partial physical damage survivable. The tool manages error correction automatically, but choosing higher levels when adding a logo ensures maximum reliability.
Export format matters depending on your use case. PNG files are raster images with a fixed pixel count — ideal for digital contexts like websites, social media posts, email signatures, and messaging apps. SVG files are vector graphics that scale to any size without quality loss, making them the right choice for print materials: business cards, posters, product packaging, restaurant menus, and exhibition banners. A QR code printed on a billboard needs to be just as sharp as one on a business card, and SVG handles both without re-rendering.
All QR code generation happens entirely in your browser. Your URLs, Wi-Fi passwords, email addresses, and phone numbers are never transmitted to any server. This is particularly important for Wi-Fi credentials — uploading your network password to a third-party service defeats the purpose of having a secure network. With client-side generation, your sensitive data never leaves your device.
Frequently Asked Questions
What data types can I encode in a QR code?
This tool supports six content types: URL (website links), plain text (any string up to about 4,000 characters), email address (opens a compose window when scanned), phone number (initiates a call), SMS message (opens a pre-filled text message), and Wi-Fi credentials (connects the scanner to a network automatically).
Can I add my logo to the QR code?
Yes. Upload any image file and it will be placed at the center of the QR code. The tool automatically increases the error correction level to compensate for the area the logo covers, ensuring the code remains reliably scannable. For best results, use a square logo with a transparent or matching background, and keep the logo size moderate — it should not cover more than 20-25% of the QR code area.
Do QR codes expire?
No. QR codes with static content (like a URL, text, or Wi-Fi password) never expire because the data is encoded directly in the pattern itself — no server, subscription, or online service is involved. The QR code is simply a visual representation of your data. However, if the underlying content changes (for example, a URL that gets taken down), the QR code will still scan but the destination will no longer work.
Which format should I download — PNG or SVG?
Use PNG for screen and digital use: websites, social media, emails, messaging apps, and digital documents. Use SVG for print: business cards, flyers, posters, product packaging, menus, and any material that needs to be resized. SVG is a vector format that scales to any size — from a tiny label to a billboard — without pixelation or quality loss.
Is my data sent to a server?
No. All QR code generation happens locally in your browser using JavaScript. Your URLs, Wi-Fi passwords, contact information, and all other content stay on your device. Nothing is transmitted, logged, or stored externally.
What is error correction and why does it matter?
QR codes use Reed-Solomon error correction, which adds redundant data to the pattern so the code can still be read even if part of it is damaged or obscured. There are four levels: L (7% recovery), M (15%), Q (25%), and H (30%). Higher error correction makes QR codes more resilient to logos, color changes, and physical wear, but also slightly increases the pattern complexity. The tool automatically manages error correction based on your content and customization choices.
How small can I print a QR code?
The minimum practical print size depends on the content density and the scanning device. For typical URLs, 2x2 cm (about 0.8x0.8 inches) works for close-range scanning with modern smartphones. For longer content (like Wi-Fi credentials with a long password), the QR code has more modules and should be printed larger — at least 3x3 cm. Always test by scanning a printed sample with your phone before mass-producing.
Can I create a QR code for a Wi-Fi network?
Yes. Select the Wi-Fi content type, enter your network name (SSID), password, and encryption type (WPA/WPA2 is standard for most home and business networks). The generated QR code, when scanned by a smartphone, will prompt the user to connect to the network automatically — no password typing needed. This is widely used in hospitality, retail, and guest network scenarios.