Base64 Encoder / Decoder
Encode and decode Base64 / Base64URL with full UTF-8 support, turn files into data URIs and decode Base64 back into downloadable files.
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Classic Cipher Workbench
Caesar, ROT13, ROT47, Atbash, Vigenère, XOR, Bacon and Morse code (with audio) – plus a Caesar brute-force view for puzzles and CTFs.
Runs in your browser – nothing to install.
About this tool
Encrypt and decrypt with Caesar, ROT13, ROT47, Atbash, Vigenère, XOR and Bacon, or turn text into Morse code and play it as audio at your chosen speed. For puzzles and CTFs, the Caesar brute force lists every shift of a ciphertext, ranked by English letter frequency.
Runs entirely in your browser – nothing you enter leaves this page.
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