JSON Formatter & Validator
Paste JSON and choose two-space indentation or compact output. Copy the formatted result.
Developer
Open a tool, enter a value, and copy the result. Everything runs in your browser. The language menu keeps you on the same tool.
JSON Formatter & Validator
Readable JSON, with error checks.
URL Encoder & Decoder
Make text safe for a URL.
Base64 Encoder & Decoder
Encode and restore UTF-8 text.
Password Generator
Create a password on your device.
Number Base Converter
Convert integers without precision loss.
How to use
URL Encoder & Decoder
Choose a direction and paste text. Uses encodeURIComponent and decodeURIComponent for URL components, not whole URLs.
Base64 Encoder & Decoder
Paste text and choose a direction. Decoding ignores whitespace and line breaks. Uses standard Base64 with = padding.
Password Generator
Choose 4–256 characters and one or more character groups. Choose Generate to create a new password with at least one character from every selected group.
Number Base Converter
Enter an integer, select base 2, 10, 16 or 36 for input and output. Base 36 uses digits 0–9 and letters A–Z.