QR Code Generator

Generate QR codes for URLs, plain text, Wi-Fi credentials, email, and phone numbers. Download as PNG — completely free, no signup, no data sent anywhere.

URL

Text

Wi-Fi

Phone

URL

0 / 2953 chars

Text

0 / 2953 chars

Network Name (SSID)

Password

Security

Hidden network

Email Address

Subject (optional)

Body (optional)

Phone Number

Error Correction

Size

Foreground

Background

Your QR code
will appear here

How to Use

Choose the content type using the tabs: URL, Text, Wi-Fi, Email, or Phone.
Fill in the relevant fields. The QR code updates automatically as you type.
Adjust Error Correction level if needed — higher levels allow the QR code to be scanned even if partially damaged, but produce a denser code.
Choose your preferred size and colors using the options below the input.
Click Download PNG to save the QR code image, or Copy Image to copy it to your clipboard for use in documents or presentations.

About This Tool

QR codes (Quick Response codes) are two-dimensional barcodes that can encode any text-based data and be scanned instantly by any modern smartphone camera. They are commonly used to share URLs, connect to Wi-Fi networks without typing passwords, initiate phone calls, pre-fill email addresses, and encode business card information (vCard). Unlike many online QR generators that log your input or show ads, this tool generates QR codes entirely in your browser using JavaScript. The text you enter is never transmitted to any server — the QR image is drawn directly on an HTML5 canvas element on your device. The resulting PNG can be used anywhere: print, web, presentations, or embedded in applications. For best scannability, maintain high contrast between the foreground and background colors, and avoid very small sizes for dense data.

Frequently Asked Questions

What is error correction, and which level should I choose?

Error correction adds redundant data to the QR code so it can still be read even if part of the code is damaged, dirty, or covered. Level L (7%) is best for clean digital displays. Level M (15%) is a good default for most uses. Level Q (25%) is recommended when printing on rough surfaces or small labels. Level H (30%) is ideal when you plan to overlay a logo in the center of the QR code — it allows up to 30% of the code to be obscured. Higher error correction levels result in denser, more complex QR patterns.

How much data can a QR code hold?

A standard QR code can hold up to 2,953 bytes for binary data, 4,296 alphanumeric characters, or 7,089 numeric digits. In practice, shorter content (URLs under 100 characters) produces simpler, faster-scanning QR codes. Very long URLs or large blocks of text produce dense codes that can be harder to scan, especially at small print sizes. Consider using a URL shortener if your URL is very long.

What Wi-Fi format does the QR code use?

The Wi-Fi QR code format is WIFI:T:WPA;S:SSID;P:password;H:false;; — a standard format supported by Android 10+, iOS 11+, and most QR scanner apps. When scanned, the device offers to join the network automatically without the user having to type the password. For hidden networks, the H:true field tells the device to look for a network that doesn't broadcast its SSID.

Can I use the generated QR code commercially?

Yes — the QR code format itself is an open standard (ISO/IEC 18004) with no royalty fees. QR codes you generate with this tool are yours to use for any purpose, including commercial printing, product packaging, marketing materials, and software applications. No attribution to Dev Toolbox is required.