Generally, it is not necessary to think of how much the archive would be after compressing a file or folder. However, in some different cases, you would have to make it not larger than specific size.
Open your RAR file. Open the app in which the RAR file is stored, then tap the RAR file. It will 'open' to a grey screen with the RAR file's name in the middle of the screen. Because iPhones don't have file managers, your RAR file is most likely in an email app or a cloud storage app. The same file decompression utilities we already mentioned can be used to open these CPGZ files, too. It's not necessary to convert one to other archive formats like ZIP, 7Z, or RAR since they're all used for practically the same purpose: to store files.
Why and when we need to compress files or folder into .rar or .zip archive with given size?
- When we have to compress a large file and want to save it on CD-drive
- When we want to upload a compressed file that is larger than the forum requires
- When we want to improve transfer speed of RAR/ZIP file through Internet
Then we can or have to control archive file size, usually by splitting an archive into several volumes with given size.
Steps to compress RAR/ZIP file and split archive to volumes in specific size
Step 1: Select the file or folder you want to compress.
Step 2: Right-click it and choose Add to archive in pop-up context menu.
select add file to archive[/caption]
Step 3: In Archive name and parameters dialog, you can see Archive name, Archive format and compression method under General tab. Confirm the archive name and archive format.
Step 4: Set compression method Normal and specify archive size.
In drop-down list of Compression method, choose Normal. And go to Split to volumes, size option, set archive size and unit to measure the size. For example, type 5 as size and choose MB as measure unit.
Step 5: Click OK in Archive name and parameters dialog and begins to compress file with above settings.
After finishing compression, you would get several RAR/ZIP archives with the same size like these.
Tips: If you want to decompress the multi-volume archives later on, please put them in the same path and then extract them. Otherwise there would be errors and you cannot decompress archives successfully.
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