The tape above spells “CodeCipher”: each column is one byte, each hole a 1. C = 01000011;o = 01101111;d = 01100100; …

Encode, decode and crack codes in your browser

Twenty-eight small, fast tools for Morse, binary, Base64, JSON, number bases and classic ciphers. Paste anything below and CodeCipher will tell you what it probably is.

Mystery text Detected locally as you type

Try:

Signals & characters

Morse Code TranslatorText to dots and dashes, with sound and a flashing lamp Morse Code AlphabetEvery letter, number and sign, plus SOS Binary TranslatorText to 8-bit binary and back Hex to TextHex bytes to readable text and back ASCII TableAll 128 codes in decimal, hex, octal and binary

Data formats

JSON FormatterBeautify, minify and fix JSON JSON ValidatorFind the exact line and column of an error JSON to CSVTurn an array of objects into a spreadsheet Base64 Encode & DecodeUTF-8 safe, standard or URL-safe Base64 to ImagePreview and download an image from Base64 Image to Base64Get a data URI for CSS or HTML Base32 Encode & DecodeRFC 4648 Base32, as used in 2FA secrets

Number bases

Number System ConverterBinary, octal, decimal, hex and any base to 36 Hex to DecimalWith the working shown Binary to DecimalWith the working shown Decimal to BinaryDivide-by-2 steps shown Decimal to HexDivide-by-16 steps shown Hex to BinaryNibble by nibble Octal to DecimalWith the working shown

Classic ciphers

Caesar CipherShift, decode and crack all 25 shifts ROT13The self-inverse shift, plus ROT47 Atbash CipherA becomes Z, B becomes Y Vigenère CipherKeyword cipher with the tabula recta Cipher IdentifierPaste a mystery string, find out what it is

Web & security

URL Encoder & DecoderPercent-encoding and query-string parser HTML EntitiesEscape and unescape &, < and friends JWT DecoderRead header, payload and expiry locally Hash GeneratorMD5, SHA-1, SHA-256, SHA-512

Encoding, encryption and hashing are not the same thing

People say “decrypt this Base64” all the time. Type a message, then switch between the three and watch what happens to it — and whether you could get it back.

TWVldCBhdCBub29uAnyone can reverse it

Base64 is a public recipe. There is no secret: every decoder on earth turns this back into your text. Encoding exists so data survives a trip through systems that only accept certain characters (email, URLs, JSON).

That one distinction clears up most confusion about these tools. ahaboo brings that same clarity to other subjects, with visual, click-through explainers grounded in solid sources.

Why these tools, and why in the browser

Everything here is ordinary JavaScript running on your device: your JSON, tokens and secrets never leave the tab. The only exception is when you press an “Ask AI” button, which sends that one piece of text to an AI model to explain it or repair it.

Each tool page also explains the method behind it — how Morse timing works, why Base64 makes data a third bigger, how place value lets one number be written as 255, FF or 11111111 — so you understand the answer as well as get it.