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QR Code Generator — Free & Unlimited

Create unlimited QR codes for URLs, text, Wi-Fi and more. Choose error-correction level, size and colors, then download as high-quality PNG — free, no watermark, no sign-up.

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Error correction

Your QR code will appear here — ready to download as a PNG and use anywhere.

Free and unlimited. Codes are rendered by a public QR service — avoid encoding sensitive data you would not want scanned.


How QR codes work

A QR (Quick Response) code stores data in a two-dimensional grid of black and white modules. Three corner squares are the finder patterns a camera uses to locate and orient the code; the rest is data, error correction and padding. QR codes hold up to around 3,000 bytes — enough for a long URL, contact details or a Wi-Fi configuration.

Every smartphone's camera can scan them natively now, which is why QR codes are the default bridge between the physical and digital world — on menus, posters, packaging and business cards.

Error correction levels explained

QR codes use Reed–Solomon error correction so they survive damage and partial obstruction. Four levels trade capacity for resilience:

  • L (7%) — highest capacity, for clean prints and digital screens.
  • M (15%) — balanced default for most uses.
  • Q (25%) — for labels, packaging and worn surfaces.
  • H (30%) — maximum resilience; ideal for logos or images placed over the code and heavy industrial use.

Choosing H lets you add a small logo in the center without breaking the scan, since the surrounding modules still hold enough data.

Best practices for scannable QR codes

  • Keep 4 modules (the "quiet zone") of empty space around the code — our generator sets a margin by default.
  • Use a high contrast between foreground and background; avoid reversing colors or light-on-light combos.
  • Test at the size and distance it will actually be used at. A poster code needs more modules of quiet zone than a screen code.
  • Never point a QR code to a shortened URL you do not control — if the short link dies, so does the code printed on everything.

Dynamic vs static QR codes

Static QR codes — like the ones this tool creates — store the data directly in the pattern. They never expire, cost nothing to generate and cannot be edited later. For print materials that stay forever, static is ideal.

Dynamic QR codes point to a short redirect URL you can retarget later and come with scan analytics — but they depend on a third-party service staying alive. Start with a static code for encoded URLs and switch to dynamic only when you need retargeting and stats.

Frequently Asked

QR Code Generator FAQ

Common questions about creating and using QR codes, answered by our web experts.

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