Using a 7-zip compression file to a minimum may involve adjusting some settings to achieve the best compression ratio. Here are the steps on how to use 7-zip to compress your files as much as possible:
Right-click on a file or folder: Find the file or folder you want to compress in Explorer, then right-click on it.
Select 7-zip: In the context menu, select 7-zip.
Select Add to Archive: This will open the compression settings window for 7-zip.
In the Add to Archive window, you can adjust the following settings to optimize compression:
Archive format: Select a compression format. The 7z format usually offers the highest compression ratio, but if you need to share a compressed file with a user who doesn't have 7-zip, you may want to choose the zip format.
Compression level: Set to Max. Doing so allows the 7-zip to try to achieve the highest possible compression ratio.
Compression method: Select lzma or lzma2. These are the most powerful compression algorithms offered by 7-zip.
Dictionary size: If your computer's memory allows, you can choose a larger dictionary size. A larger dictionary size may increase the compression ratio, but it can also increase memory usage and compression time.
Number of CPU threads: If your computer has a lot of CPU cores, you can increase the number of threads to speed up the compression process.
Once all the settings are confirmed, click "OK" to start the compression process.
Higher compression ratios usually mean longer compression times and higher CPU and memory usage.
Some file types, such as already compressed images (jpeg, etc.) and ** files (mp4, etc.), are themselves highly compressed, and using 7-zip may not be able to significantly reduce their size.
Files compressed to 7z format need to be opened using 7-zip or other decompression software that supports 7z format.
With the above steps, you can use 7-zip to compress files as efficiently as possible. Keep in mind, though, that the final compression effect also depends on the type and content of the original file.