Encode

A collection of free online encoding and decoding tools, providing Base64 encoding and decoding, URL encoding and decoding, Hex hexadecimal conversion, MD5/SHA256 hash calculation, QR code generation, and other encoding tools. The browser performs local operations without uploading data, ensuring security and efficiency.

Vigenere Cipher

Keyword-driven polyalphabetic encrypt and decrypt, case preserved.

URL Encoder & Decoder

Percent-encode and decode URLs and query params, with encodeURI vs encodeURIComponent.

Unicode Escape Converter

Convert text to \uXXXX / \UXXXXXXXX escapes and back, with correct surrogate pairs.

Leetspeak Converter

Turn English into 1337-style leetspeak with an editable mapping dictionary and bidirectional convert.

HTML Entity Encoder & Decoder

Convert text to HTML entities (& < >) and decode them back, named and numeric.

Hex Encoder & Decoder

Convert text to hex bytes and back, with space separation and case options.

Emoji Letter Encoder

Map each English letter to a regional indicator emoji, with bidirectional convert and one-click swap.

Encrypt or decrypt with any shift, and brute-force all 25 shifts to crack.

Braille Converter

Convert Latin letters and digits to Braille Unicode dot characters with a live six-dot grid.

Text to Binary Converter

Convert text to 0101 binary strings and back, byte by byte in UTF-8.

Base64 Encoder & Decoder

Convert text to Base64 and back, UTF-8 safe, with URL-safe variant and MIME line wrapping.

Convert between base 2/8/10/16/36, arbitrary-precision integers via BigInt.

EAN-13 Barcode Generator

Enter 12 digits to compute the EAN-13 check digit, draw a standard barcode on canvas and download PNG.

Mirror the alphabet so A maps to Z, B to Y, keeping non-letters.

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