EVMTools

QR Code Generator

Generate QR codes from text, URLs, emails, or Wi-Fi credentials online. Customize colors, download as PNG. Free, client-side tool.

Examples

About QR Code Generator

QR (Quick Response) codes are two-dimensional barcodes that can store URLs, text, email addresses, Wi-Fi credentials, and more. They are widely used for sharing links, payments, and authentication.

This tool generates QR codes entirely in your browser using a pure JavaScript implementation. No data is sent to any server. You can customize colors and download the result as a PNG image.

How to Use This QR Code Generator

This free online QR code generator lets you create QR codes instantly from any text or URL. Everything runs locally in your browser with no server requests.

  1. Enter your data — type or paste a URL, text, email address, or Wi-Fi configuration into the input field.
  2. Customize appearance — adjust the module size for resolution, and pick custom foreground and background colors.
  3. Download or copy — click "Download PNG" to save the QR code as an image file, or "Copy Image" to copy it to your clipboard.
  4. Test your code — scan the generated QR code with your phone camera to verify it works correctly.

Your data is never sent to a server. The QR code is generated entirely in your browser using a pure JavaScript implementation.

Common Use Cases

  • Website links — Share URLs for websites, landing pages, app download links, or social media profiles.
  • Wi-Fi sharing — Generate QR codes for Wi-Fi network credentials so guests can connect by scanning.
  • Business cards — Add QR codes to business cards linking to your portfolio, LinkedIn, or contact info.
  • Crypto wallet addresses — Share cryptocurrency wallet addresses via QR code for easy sending.
  • Event tickets and check-in — Generate unique QR codes for event registration and ticket validation.

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Frequently Asked Questions

What is a QR code?

A QR (Quick Response) code is a two-dimensional barcode that can be scanned by smartphones and barcode readers. It can encode URLs, plain text, email addresses, Wi-Fi credentials, phone numbers, and more. QR codes were invented in 1994 by Denso Wave for tracking automotive parts and have since become ubiquitous for sharing information.

How do I generate a QR code online?

Simply type or paste your text, URL, or data into the input field and the QR code is generated instantly. You can customize the foreground and background colors, adjust the module size for resolution, and then download the QR code as a PNG image or copy it to your clipboard.

Is this QR code generator free?

Yes, this QR code generator is completely free with no sign-up, watermarks, or usage limits. The QR code is generated entirely in your browser using a pure JavaScript implementation, so your data never leaves your device.

What types of data can I encode in a QR code?

You can encode any text-based data including website URLs, plain text, email addresses (mailto:), phone numbers (tel:), SMS messages, Wi-Fi network configurations (WIFI:T:WPA;S:NetworkName;P:Password;;), geographic coordinates, calendar events, and vCard contact information.

What is the maximum data a QR code can hold?

This tool supports up to approximately 271 characters in byte mode (QR version 10). Standard QR codes can hold up to 4,296 alphanumeric characters at the largest version (40), but higher versions produce very dense codes that may be difficult to scan. For most URLs and text, version 10 is more than sufficient.

Can I customize the colors of my QR code?

Yes, you can change both the foreground (module) color and the background color using the color pickers. Make sure to maintain sufficient contrast between foreground and background for reliable scanning. Dark modules on a light background typically work best.

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