Archive formats
Zlib header decoder
Check CMF/FLG fields and report the deflate window and dictionary flag.
Your inputs
Start with an exampleYour result
Example resultAa — A small example of your colors.
How it works
CM must be 8, CINFO at most 7, and the two-byte header must be divisible by 31. Window size is 2^(CINFO+8).
78 9C selects a 32,768-byte deflate window without a preset dictionary.
Limits
If FDICT is set, include its four-byte dictionary ID. No compressed payload or Adler-32 trailer is verified.