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FASTBASE64(1) User Commands FASTBASE64(1) NAME fastbase64 - base64 encode/decode data and print to standard output SYNOPSIS fastbase64 [-Ddh] [-b num] [-i in_file] [-o out_file] DESCRIPTION fastbase64 encodes or decodes base64 data using the high-performance sim- dutf library. By default, it encodes binary input to base64 output. On large files, it can be several times faster than standard base64 tools. If a second filename is provided, it is used as the output file. Otherwise, output goes to standard output. OPTIONS -b, --break num break encoded output up into lines of length num (default 0, meaning no breaks) -D, -d, --decode decode input -h, --help display this message -i, --input in_file input file (default: "-" for stdin) -o, --output out_file output file (default: "-" for stdout) -w, --wrap=NUM same as -b -e, --encode encode input (default) --ignore-garbage when decoding, ignore non-alphabet characters --version output version information and exit EXAMPLES Encode a file (default, no wrapping): fastbase64 -i myfile.txt Decode base64 data: fastbase64 -d -i encoded.txt Encode with custom line wrapping: fastbase64 -b 76 -i myfile.txt SEE ALSO base64(1), fastbase64.coreutils(1), iconv(1) AUTHOR Written by the simdutf development team. simdutf March 2026 FASTBASE64(1)
NAME | SYNOPSIS | DESCRIPTION | OPTIONS | EXAMPLES | SEE ALSO | AUTHOR
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