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Compact Pro

Game screenshot
Your rating: None Average: 4.8 (11 votes)
Year released:
[www].se [ftp].se [mirror].us [mirror].de
Compact_Pro_1.52.hqx (450.26 KB)
MD5: 72fdb36bbd607b171c9169b231a1a7d8
For System 1 - 5 - Mac OS 9
[www].se [ftp].se [mirror].us [mirror].de
Compact_Pro_1.51_fr.hqx (223.60 KB)
MD5: 42172861507536b191d73fbbdf55a50b
For System 1 - 5 - Mac OS 9
[www].se [ftp].se [mirror].us [mirror].de
Compact_Pro_1.33_fr.sit (98.75 KB)
MD5: e59fe15a895ff8602fdc8ecb5d2c37db
For System 1 - 5 - Mac OS 9
[www].se [ftp].se [mirror].us [mirror].de
Compactor_V1.21.sit (110.32 KB)
MD5: c753b30ccb5e6df9480ce0f1db84ba04
For System 1 - 5 - Mac OS 9
[www].se [ftp].se [mirror].us [mirror].de
CptExpand.sit (9.59 KB)
MD5: c315e5c8416b2166cec5e639ffe63a92
For System 1 - 5 - Mac OS 9
[www].se [ftp].se [mirror].us [mirror].de

A Macintosh archival compression program, similar to StuffIt but using its own compression algorithm (.cpt). It could also create self-extracting archives (.sea) and read/write .hqx and .bin files for distributing over networks. Compact Pro for several years in the early 1990's was a serious and popular competitor to StuffIt. However it has now been discontinued and is unsupported. For further reading about this unique and historic Macintosh program, see this Wikipedia entry.

For versions of Compact Pro 1.52 available in the English, French, German & Japanese languages: visit the official Compact Pro web site

Others DL actually submitted here: Compact Pro 1.51 (French), Compact Pro 1.33 (French), Compactor 1.21 (Extractor 1.12 and 1.21 included), Compact Pro Expand (a drag and drop utility from the same author).

Compactor was the previous name of Compact Pro...

Architecture: 68k PPC

Compact Pro works with all (Classic native) Macintosh models except the 128K and 512K.
Requires a Mac OS version 4.2 to 9.2.2.
It's a FAT binary program that runs fine on 68k & PPC Mac and the 3 main Macintosh emulators.
Also: StuffIt Expander can be used to extract Compact Pro (.cpt) archives, if the StuffIt Engine is present in the System Folder (Classic Mac OS).


Jatoba's picture
by Jatoba - 2019, September 29 - 2:48pm

@MikeTomTom Despite reading that message back when it was posted, I forgot to comment back, so I'm here now to do it justice.

That was an excellent write-up. It did make me reconsider using Compact Pro, at least for extraction. I know StuffIt had an issue with not just folder, but also file timestamps, and that was fixed with the arrival of StuffIt 1.5.1 (at least for files), which was truly the best version of StuffIt up until that point, and the only version to work pre-System-6, just like Compact Pro.

So I wonder: does StuffIt 1.5.1 also fail to preserve folder timestamps like Compact Pro when extracting, and/or does it fail to preserve them even when compressing, or does it preserve them properly?

Regardless, StuffIt 1.5.1 has two issues that I assume Compact Pro doesn't:
- The file format itself doesn't preserve the hidden Mac file(s) that contains positioning info of icons within a folder (how icons are arranged in a non-list view), and some other cosmetic information (such as which view mode was pre-selected for a given folder, IIRC);
- For some folder/file structures and folder/file names, StuffIt Expander 5.5.1 fails to extract files correctly, without throwing errors (which is worse than it correctly telling the user something went wrong). Not an issue with StuffIt Expander 7.0.3. Unlike the previous point, this one is not an issue with the 1.5.1 file format itself, but rather an issue with the StuffIt 1.5.1 program itself (creating 1.5.1 archives with StuffIt 3.x ~ 4.0.x avoids this and other problems).

Now, the questions are:
- Does Compact Pro also share the first of the two issues?
- Do StuffIt 1.5.1 file format files also preserve folder timestamps, unlike Compact Pro?
- Are there any folder/file structures and folder/file names that cause issues with .cpt archives, or with the extraction of .cpt archives with a specific StuffIt and Compactor/Compact Pro version?

I will try finding out the answers to these questions over time, and report back accordingly. But regardless of results, because one's only means of archival in a System version earlier than System 6 is either CP or StuffIt 1.5.1, some compromise in accuracy is made somewhere. Meaning the moral of the story is: archiving multiple files into one file with perfect accuracy in anything that predates System 6 is (currently) impossible! And thus should be avoided. StuffIt 4.0.1 for life.

MikeTomTom's picture
by MikeTomTom - 2019, May 19 - 1:37am

I always preferred Compact Pro over Stuffit

I used to think that Compact Pro was an excellent Macintosh archival tool, up there with the likes of StuffIt.

But nowadays, my needs for an accurate archival tool has become more particular, and I find that Compact Pro is not up for that task at hand. Especially for folder date and times preservation. For example:

Not the result I had hoped to see.

Not a result I had hoped to see (click to enlarge view)

While it is fine at preserving date and time stamps of the actual files, when it comes to extracting the folder hierarchy of an archive, it recreates all folders giving them date and time stamps from the time of extraction.

Compact Pro is safe enough to use if archiving individual files, disk images, etc, but it is not good enough should you wish to preserve the original time and modification dates of the original files including their enclosing folder structures.

When Compact Pro creates an archive from loose files in a hierarchical folder structure, the date and time info is handled correctly, including folders. If I extract a ".cpt" file using StuffIt instead to perform the extraction, all date and time stamps including those for folders are recreated correctly. So I know they are included in the archive. It's only Compact Pro's handling of the extraction that is poor.

Jatoba's picture
by Jatoba - 2019, May 14 - 4:54am

Me too. StuffIt has also become more and more cumbersome with each new release.

After having thoroughly poked at every single version of StuffIt available here in the Garden just now, I wholeheartedly agree.

WhosIt.There's picture
by WhosIt.There - 2018, June 28 - 10:29pm

Me too. StuffIt has also become more and more cumbersome with each new release.

Zarggg's picture
by Zarggg - 2009, August 13 - 4:02am

I always preferred Compact Pro over Stuffit, honestly.