Hex Encoder / Decoder

Base64 Encode / Decode

Encode and decode Base64 strings in your browser — UTF-8 safe, privately.

URL Encode / Decode

Percent-encode and decode URLs, query params, and form values — in your browser.

HTML Entities Encode / Decode

Encode and decode HTML entities in your browser — privately.

Number Base Converter

Convert numbers between binary, octal, decimal, and hex — BigInt-safe, with bitwise ops.

Data URL Parser & Builder

Parse, build, and inspect RFC 2397 data URLs — inline images, fonts, and text in your browser.