iShrink can Create multi-file archives, the files contained in these multi-file archives can be deleted or updated, you can also add more files to iShrink archives or preview the Contents at any time.You can create an archive by clicking the down arrrow button located at the bottom left of the iShrink window which will display the archive window. Just drag & drop any file or folder to the archive window, when your ready just click the orange button next to the Up arrow to create your archive.
Just select your compression format and drag and drop the file to be compressed, decompression is even easier, just drag and drop the file on the iShrink window and iShink will decompress it back to its original state. You can compress or decompress in standard Zip format, Unix tar Compress, tar Bzip2 and tar Gzip with iShrink.
What's new in version 3.0.4:
* Improvements in archive compression
* Minor interface improvements
* Minor code improvements
* Improved overall stability