ZIP & UNZIP  (Windows)
Generally, you can use for instance 7-zip to zip or unzip files (via Shell command)
(program C:\Program Files (x86)\7-Zip\7z.exe  or C:\Program Files\7-Zip\7z.exe)

But here we use PowerShell included in Windows.
Same samples of possible situations.
Of course you need to use your own file names and directories.

'---1--- ZIPPING A SINGLE FILE
ZIPTOCREATE$ = "D:\TEMP\TESTMAKING.ZIP"
MYFILE$ = "D:\CZUR\SV0010_Janvier_1914.pdf"
UU$ = "powershell Compress-Archive -force -path " + Chr$(34) MYFILE$+ Chr$(34) + " " + Chr$(34) + ZIPTOCREATE$ + Chr$(34)
Shell UU$
'Note     -force overwrite existing ZIP.  You can use -update to refresh the ZIP
End

'---2--- ZIPPING MULTIPLE FILES
ZIPTOCREATE$ = "D:\TEMP\TESTMAKING.ZIP"
FILE1$ = "D:\CZUR\SV0010_Janvier_1914.pdf"
FILE2$ = "D:\CZUR\SV0011_Février_1914.pdf"
UU$ = "powershell Compress-Archive -force -path " + Chr$(34) + FILE1$ + Chr$(34) + " ,  " + Chr$(34) + FILE2$ + Chr$(34) + " " + Chr$(34) + ZIPTOCREATE$ + Chr$(34)
Shell UU$
End

---3--- ZIPPING MULTIPLE FILES with ' * '
ZIPTOCREATE$ = "D:\TEMP\TESTMAKING.ZIP"
FILEZ$ = "D:\CZUR\*.pdf" : ' We want here to zip all pdf file located in CZUR directory
UU$ = "powershell Compress-Archive -force -path " + Chr$(34) + FILEZ$ + Chr$(34) + " " + Chr$(34) + ZIPTOCREATE$ + Chr$(34)
Shell UU$
End

'---4--- ZIPPING A DIRECTORY WITH THE ROOT 
REPERTOIREACOPIER$ = "D:\CZUR\MYFILES"  '  (don't add \ at the end of the path)
ZIPTOCREATE$ = "D:\TEMP\TESTMAKING.ZIP"
UU$ = "powershell Compress-Archive -force " + Chr$(34) + REPERTOIREACOPIER$ + Chr$(34) + " " + Chr$(34) + ZIPTOCREATE$ + Chr$(34)
Shell UU$
end

'---5--- ZIPPING A DIRECTORY WITHOUT THE ROOT 
REPERTOIREACOPIER$ = "D:\CZUR\MYFILES\*"    '  ( add \*  at the end of the path)
ZIPTOCREATE$ = "D:\TEMP\TESTMAKING.ZIP"
UU$ = "powershell Compress-Archive -force " + Chr$(34) + REPERTOIREACOPIER$ + Chr$(34) + " " + Chr$(34) + ZIPTOCREATE$ + Chr$(34)
Shell UU$
'Note: the zip file created has not information about "myfiles" directory
end

'---6---UNZIPPING 

DESTINATIONDIRECTORY$ = "D:\CZUR\tempo"   
ZIPTOUNZIP$ = "D:\CZUR\livre.ZIP"
UU$ = "powershell Expand-Archive -force " + Chr$(34) + ZIPTOUNZIP$ + Chr$(34) + " " + Chr$(34) + DESTINATIONDIRECTORY$ + Chr$(34)
Shell UU$
' if TEMPO directory do not exist, it will be created (due to -force option)
End

Please read  for more informations:
'https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.archive/compress-archive?view=powershell-7.2
'https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.archive/expand-archive?view=powershell-7.2

Please see:
https://www.qb64.org/forum/index.php?topic=2689.msg119268#top  (locked)

Well, the program given by bplus works fine, but you can select only ONE file.

Is there a way to select directly multiple files (located  in a directory, of course) ?

Hello,
Why "about" in the QB program do'nt say if you are working with a 32 bits or a 64 bits version of QB ?
Thank's

- QB64 64 bits says:
QB64 Version 1.4
Revision Release Candidate
From git of 6990118

- QB64 32 bits says:
QB64 Version 1.4
Stable Release
From git of 0f49b2c

Nice...

Cycle = 29.53059

Usefull for werewolves and vampires, of course !!!  :)

When you work on the calendar, it may be useful to know the date of Easter ...
This little program gives you the date of Easter Day.

Why copying chrome into the working folder ????

Find the real folder of Chrome !

Exemple (with opera and firefox):

url$ = "

"

'Starting with opera:
prog$ = "C:\Program Files\Opera\launcher.exe"
SHELL _HIDE CHR$(34) + prog$ + CHR$(34) + " " + CHR$(34) + url$ + CHR$(34)



'starting with firefox:
prog$ = "C:\Program Files (x86)\Mozilla Firefox\firefox.exe"
SHELL _HIDE CHR$(34) + prog$ + CHR$(34) + " " + CHR$(34) + url$ + CHR$(34)