QR Code Generator

A QR code encodes text — a URL, a Wi-Fi password, contact details, or plain text — as a grid of black and white squares that a camera can decode in an instant. Under the hood it uses Reed-Solomon error correction, which is what lets a QR code stay scannable even when part of it is scratched, poorly lit, or, as with this tool, partly covered by a logo.

This generator builds the code, applies your chosen foreground and background colors, composites an optional logo on top with a solid backing square so the modules underneath don't need to stay legible, and draws an optional caption below it — all on a single canvas, entirely on your device. Nothing you type or upload is sent to a server, and the tool keeps working with no internet connection once the page has loaded.

Error correction level controls how much of the code can be damaged or obscured before it stops scanning: Low tolerates about 7% loss, Medium about 15%, Quartile about 25%, and High about 30%. Higher levels pack in more redundancy, which makes the printed pattern denser — that's why adding a logo automatically raises the level to High, giving the covered area the best chance of still scanning cleanly.

Keep the encoded text reasonably short for a code that's easy to scan from a distance: URLs and short strings produce a clean, low-density pattern, while long blocks of text force a bigger, harder-to-read grid. If generation fails, it's almost always because the text is too long for the chosen error correction level — try trimming it or lowering the level.

Once you're happy with the preview, download it as a PNG and drop it straight into a poster, business card, or product packaging. Because everything renders locally, you can generate as many variations — different colors, logos, or captions — as you like without any rate limit.