Gifpress
From Just Solve the File Format Problem
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(Created page with "{{FormatInfo |formattype=electronic |subcat=Graphics |extensions={{ext|gps}} |released=1994 }} '''Gifpress''' is a special-purpose file compression utility for DOS. It compres...") |
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== Software == | == Software == | ||
* {{CdTextfiles|pier/pier06/023/GIFPRESS.ZIP|Gifpress v1.0}} | * {{CdTextfiles|pier/pier06/023/GIFPRESS.ZIP|Gifpress v1.0}} | ||
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| + | == Sample files == | ||
| + | * {{DexvertSamples|image/gifpress}} | ||
[[Category:Recompression]] | [[Category:Recompression]] | ||
Latest revision as of 14:06, 19 March 2025
Gifpress is a special-purpose file compression utility for DOS. It compresses only GIF image files, to its native .GPS format. It was developed by John Callicotte, and distributed as shareware.
A GPS file can be decompressed back to a GIF file that is functionally identical to the original, but not necessarily byte-for-byte identical.
Contents[hide] |
[edit] Format details
There's clear evidence that Gifpress uses the Cx data compression toolkit (v2.01) by Eugene Nelson and Four Lakes Computing (cx201e.zip).
[edit] Identification
It's not known how to identify a GPS file from its contents, though in limited testing, the bytes 0xff 0xb4 always appeared at offset 2.
