But you can use the built-in command 'certutil -encode/-decode' to indirectly perform. If you are using a Windows system, there is no built-in command to directly perform Base64 encoding and decoding. ![]() Base64 encode your data without hassles or decode it into a human-readable format. This section provides a tutorial example on how to use certutil -encode command on a Windows system to perform Base64 encoding and decoding. ![]() Thus, to restore the Cyrillic alphabet, it is enough to do an additional transcoding of the text from iso-8859-1 to windows-1251. As it turned out, all the scripts I saw here convert Cyrillic Base64 to iso-8859-1 encoding. I verified the steps posted here with a PDF file with 1.499.046 bytes stored Base64 encoded in a generic mbox file (mail format) for which I had also the original PDF file for a binary comparison after decoding the data. Meet Base64 Decode and Encode, a simple online tool that does exactly what it says: decodes from Base64 encoding as well as encodes into it quickly and easily. Base64 Win-1251 decoding for encodings other than acsi or iso-8859-1. Press F12 to open Save As dialog and save the new file with name and extension suitable for the decoded data. The selected Base64 encoded data is replaced by decoded binary data displayed in text editing mode. Press Ctrl+A to select all and use command Decode Base64 in menu Edit (traditional menus) or Advanced - Base64 - Base64 decode in ribbon mode or with using contemporary menus. It is important that the new file is not a Unicode file (UTF-16, UTF-8), but a 1 byte per character encoded text file not containing anything else than the Base64 encoded data. Meet Base64 Decode and Encode, a simple online tool that does exactly what it says: decodes from Base64 encoding as well as encodes into it quickly and easily. Open a new ANSI file and copy and paste into this file just the Base64 encoded data. This setting does not exist anymore since UE for Windows v24.00 and UEStudio v17.00 as null bytes are kept always without conversion to spaces. ![]() This is necessary because otherwise UltraEdit/UEStudio would replace each null byte by a space character after replacing Base64 encoded data with decoded data. Open Advanced - Settings or Configuration - Editor - Advanced and check the setting Allow editing of text files with hex 00's without converting them to spaces if existing at all (UE for Windows < v24.00 and UEStudio < v17.00). Yes, this is possible, but requires a few preparations.
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