QR Code Generator

A QR code stores data in a grid of black and white squares called modules. The three large squares in the corners are finder patterns that let a scanner locate and orient the code from any angle. Smaller alignment and timing patterns keep the grid readable even when the image is tilted or slightly distorted.

The amount of data you encode determines the version, which is the size of the grid. Short links use a small version with few modules, while long text needs a larger grid with many more squares. The generator picks the smallest version that fits your content so the result stays as compact as possible.

Every code follows the ISO/IEC 18004 standard, so any compliant scanner can read it. When you type text or a link, the tool encodes it, adds the required patterns and a quiet-zone margin, and renders a clean image. For link payloads, the URL QR Code Generator is a faster starting point.

QR codes include redundant data so they still scan when part of the image is dirty, scratched or covered. You choose how much redundancy through the error correction level. Level L recovers about 7 percent of the code, M about 15 percent, Q about 25 percent, and H about 30 percent.

Higher correction sounds better, but it has a cost. The extra recovery data takes up modules, so a level H code holds less information than a level L code of the same size, or it grows to a larger version. For a plain link on a clean screen, L or M is usually enough.

Level H pays off when the code will be printed small, placed on packaging that bends, or covered by a logo overlay. The redundant data lets the scanner reconstruct the missing modules. If you add a logo, raise the level to Q or H so the hidden area stays recoverable.

A QR code only scans reliably when the camera can tell modules apart. The single most important factor is contrast. Keep the dark modules genuinely dark and the background genuinely light. Pale gray on white or two similar mid-tones will frustrate scanners even when the code looks fine to the eye.

The quiet zone is the empty margin around the code. The standard recommends a clear border of at least four modules on every side. Without it, a busy background bleeds into the finder patterns and the scanner cannot lock on, so always leave that breathing room even when space feels tight.

Size matters on print. A common rule of thumb is that the code should be about one tenth of the scanning distance, so a code read from 30 cm away needs to be roughly 3 cm across. Increase the scale for posters and signage read from further back, and test the printed result before any large run.

This generator exports both PNG and SVG, and the right choice depends on where the code will live. PNG is a raster format made of fixed pixels. It works everywhere, drops straight into emails, slides and social posts, and needs no special handling. The catch is that it has a fixed resolution, so blowing a small PNG up to poster size makes the edges look soft and blocky.

SVG is a vector format. It describes the code as shapes rather than pixels, so it stays razor sharp at any size, from a business card to a billboard. That makes it the better pick for professional print, where the design team may resize the artwork freely.

A practical workflow is to download SVG for anything going to a printer and PNG for quick digital sharing. Set a generous scale before exporting either, since starting larger never hurts. You can also copy the encoded text to confirm the payload is exactly what you intended.

This page is the general QR code tool. It encodes any text or link and gives you full control over error correction, size, margin and colors. If you only need to turn raw text into a code, it is the quickest path, and you can switch input types within one interface.

For specific payloads, a dedicated generator removes guesswork by formatting the data correctly for you. The URL QR Code Generator adds the right scheme so scanners open the browser directly. The WiFi QR Code encodes the network name, password and security type so a phone joins with one tap. The vCard QR Code Generator builds a contact card that saves straight to the address book.

If you already have a printed code and want to confirm what it contains, the QR Code Reader decodes it back to plain text so you can verify the payload before it goes to print. Choosing the specialized tool that matches your use case keeps the encoded data valid, formats it correctly, and saves time you would otherwise spend fixing scan failures.