gzzzzzz Files

gzzzzzz

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stores a file into gzip format where the output is 6 times as large as the
input.

usage: gzzzzzz [--help] <input-file> <output-file>

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in RFC 1951 which specifies the deflate format is written:

   "the format defined here, the worst case expansion is 5 bytes per 32K-byte
   block, i.e., a size increase of 0.015% for large data sets."

in fact this statement holds only for nice and correct implementations. You
can easily write a program that uses the deflate format to increase the data
many many times.
As a proof of concept I have written this code snippet to increase files six
times and write the output in the gzip file format which wrapps the deflate
format.
I think that one can misuse virtually any compression format in such a
way. If some programmers think that a compressed file is not signifficantly
bigger than the original file, a "file increaser" may be an issue e.g. for
buffer overflows or network traffic or ...