Utility tools

Make QR codes and passwords, format JSON, encode and decode Base64, and work out percentages. These tools need no file and give answers as you type.

Your files never leave your device.

• QR code generator

  Downloads as PNG or SVG, and codes never expire

• Password generator

  Length 8 to 128, strength shown in bits, nothing saved

• JSON formatter

  Indent with 2 or 4 spaces or tabs, sort keys A to Z

• Base64 encode and decode

  Text to Base64 and back, with a URL-safe option

• Percentage calculator

  Percent of a number, share, or change between two