QR Code Generator

Yes. The generator is completely free with no ads, sign-up, or watermark, and the QR codes it produces are static — the data is encoded directly into the image, so the code never expires and does not depend on this site staying online. As long as you keep the downloaded PNG or SVG, the code will keep working.

No. The QR code is generated entirely in your browser using JavaScript. The text or URL you enter is never uploaded to a server, which makes it safe to encode private links, Wi-Fi credentials, or internal URLs.

Use PNG for quick sharing, slide decks, and most web or chat use — it is a ready-to-use raster image at the size you selected. Use SVG when you need to print large (posters, packaging, signage) or resize without any quality loss, since SVG is vector and stays sharp at any scale.

Error correction adds redundancy so a QR code still scans when part of it is dirty, damaged, or covered by a logo. Level L recovers about 7% of the code, M about 15%, Q about 25%, and H about 30%. Higher levels make the code denser (more modules) for the same data. Use L or M for clean on-screen use, and Q or H for printed codes or when you place a logo in the center.

The three most common causes are: too little contrast between the foreground and background colors (keep the code dark on a light background), too small a size for the amount of data (increase the size or shorten the URL), and no quiet-zone margin (leave the margin enabled so scanners can find the code edges). Very long text also produces a dense code that is harder to scan — prefer a short link where possible.

Yes — you can set the foreground and background colors. For reliable scanning keep a strong light-to-dark contrast (a dark foreground on a light background). Inverted or low-contrast color pairs often fail to scan.