Base 64 encoding and decoding
The calculators encode string to base64 string and decode back to original string. Special characters (+/) , generally produced by base64 algorithm, can be replaced by the data provided in additional parameter.
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Anton
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 | Timur
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You may use the calculators below to convert a string in base64 format and back to the original text.
Base 64 encoder
Base64 encoding algorithm converts input string to characters sequence, which has digits from 0 to 9, letters from a to z, capital letters from A to Z, and two special symbols: + (plus) and / (slash). The latter two symbols cannot be used in web URLs. You may change these two symbols to something else by passing desired replacement in the Special symbols replace parameter.
Base64 decoder
The calculator transforms input string in UTF8 characters array and then perform encoding as described in Mozilla Developer Network article
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