Just tried using the Modern (Windows 10) Icon set and seeing a few missing icons in both PowerArchiver Burner and PowerArchiver Encryption screens . They are all there in the Minimalistik icon set and the only difference I can see is the former is blue and the latter grey. In version 22.00.9
there were some security issues fixed in 7zip:
As it seems, that PowerArchiver and PACL use the 7zip libraries, could you please update them to the latest version?
I noticed that the version of ZPAQ used is older than the latest released 7.15 https://mattmahoney.net/dc/zpaq.html also there seems to be a newer fork that adds several features https://github.com/fcorbelli/zpaqfranz
It would be useful to implement this latest version (it also maintains the same syntax and behavior as the latest official release if used the -715 flag) and add when opening a zpaq file a choice of the version of the files to show (e.g. as dummy folders represented the various versions present). Since any previous changes are stored with this format, it is possible to extract a snapshot of a certain date/version.
If I open a password-protected zipper file (created with WinRAR but I think that’s irrelevant), open it with PowerArchiver and run “Remove Encryption” on the same file, then reopen it and add a password with “Encrypt Archive,” the resulting archive will be protected with the old ZipCrypto algorithm and not AES as indicated.
(this can be verified, for example, by trying to open the archive files with Windows Explorer, which does not support the AES algorithm)
PA 21.00.18 running on Windows 7 64 bit.
I made a big .PA file and thought I’d check it was made correctly with Menu / Actions / Test.
a) PA always issues a UAC prompt to do this!
b) PA always says there are many errors in PA files.
Optimized method not really optimized….
I’m using the latest build of PowerArchiver 2016 16.00.69. I am the kind of person who loves the best compression possible within a fair time.
I have tested the 7-Zip option and have set it to Optimized method and Ultra (memory req.) compression and have solid archive enabled.
I expected this to give the best possible compression, but this is not so.
For example, on the following file “Ashampoo Anti-Virus 1.2.0.exe” which is 158,458 KB, I get the following results:
7-Zip (Optimized method) -> 159,945 KB
7-Zip (LZMA2 method + everything else same) -> 157,863 KB
I expected that the Optimized method would take into account the big initial file size and use the LZMA2 method to get the smallest possible compressed file.
Why isn’t that the case?
Also, just a suggestion. Put in an option that uses all methods automatically and performs the compression multiple times and then leaves you with the best compressed file possible for that format (7-Zip, RAR, CAB, etc).
For example, if I select to get smallest file with 7-Zip, it does the compression several times using the different methods and then leaves me with the smallest file it could end up with after its all been run.
confirmed and noted!
thanks for taking the time to provide the details
Please provide updates as something more comes to light regarding this.
Can confirm at least in 17.00 problem is fixed. Nevertheless, ratio on Optimized compression, is not as good as in the official 7-Zip, so I will fill a new post.
try the same files with .pa format now :)
I have compressed full PowerArchiver x64 portable in my SSD disk, so it is easy for you to reproduce.
- Uncompressed size: 176.473.679 bytes.
- 7-Zip 17.00 Ultra LZMA 128MB fb273 myx=9: 28.330.063 bytes.
- PowerArchiver 7z 17.00.69 LZMA Ultra: 29.060.624 bytes.
- 7-Zip 17.00 Ultra LZMA2 128MB fb273 myx=9: 28.323.572 bytes.
- PowerArchiver 17.00.69 7z LZMA2 Ultra: 29.062.095 bytes.
- PowerArchiver 17.00.69 7z Optimized Ultra: 41.579.382 bytes.
Take a look at the bad results with the Optimized profile, and also at the equivalent PA implementation, being slightly worse than the one in 7-Zip, meaning that the library used or its parameters, are subobtimal.
By the way, same with PA format, excellent results:
- PowerArchiver 17.00.69 pa Extreme Optimize Strong: 27.114.421 bytes.