Free QR code tools

Every tool runs in your browser. Nothing you type or upload is sent anywhere, and there is no account. Pair them with the guides to get a code right first time.

• 📦

  Bulk QR code generator (CSV to SVG or PNG)

  One line per code, optionally with a filename before a comma.

• ✂️

  Optimized SVG QR code generator (single path)

  One <path> for all the dark modules instead of hundreds of <rect>s. Usually 70 to 85% smaller.

• 🖨️

  Printable QR code test sheet

  One printed page answers the size, level and color questions for your actual printer and phone.

• 🧬

  QR code anatomy explorer

  Every square in a QR code has a job. This tool colors them so you can see which is which.

• 📐

  QR code capacity calculator and version chooser

  Paste your text and see which version (size in modules) you need at each error-correction level.

• 🎨

  QR code color contrast checker

  Aim for a contrast ratio of 4.5 to 1 or better between modules and background. 7 to 1 is bulletproof.

• 🔍

  QR code decoder (read a QR code from an image)

  Drop in a screenshot or photo and read the code's content before you visit it.

• 🩹

  QR code error correction visualizer

  Drag the slider to flip random modules and see the exact point where each level gives up.

• 🏷️

  QR code logo safe-area checker

  At level H a centered logo can usually cover about a quarter of the modules. At level L, almost nothing.

• 📏

  QR code print size calculator

  A QR code should be at least one tenth of its scan distance. A poster read from 2 m needs a 20 cm code.

• ✅

  QR code scannability tester

  Six checks that simulate real-world scanning: shrink, blur, grayscale, inversion, plus a quiet-zone measurement.

• 🔤

  QR code to text art (Unicode or ASCII)

  Get a QR code as text you can paste anywhere a monospace font is used.

• 🧩

  Wi-Fi, vCard and other QR payload builder

  Fill in the fields and watch the raw payload update. That string is what actually goes in the code.