How can I achieve best compression results using WinRAR?

Shaikh Mohmmad Ayaz May 9, 2011
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Recently, I downloaded a 13 MB RAR file through Torrent. When extracted it was 245 MB.

I am wondering how it was compressed using WinRAR. Please tell the way to compress using WinRAR. There was difference between ratio also im properties and archive tab the lower the ratio the more the compression.

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  1. Naina
    November 26, 2011 at 10:55 am

    But what about a corel draw graphic folder???????

    • Tina
      December 2, 2011 at 9:22 pm

      Naina,

      if the above advice doesn't work for you, I recommend that you submit a new question via MakeUseOf Answers. You will receive an answer within several hours.

  2. Anonymous
    May 11, 2011 at 4:35 pm

    Also, try using 7zip. It gives a much better compression ratio than winrar.

  3. Saikat Basu
    May 10, 2011 at 2:51 am

    WinRar also allows you to estimate the time and percentage of compression before you actually do it.

    In case you have a huge folder structure to zip, how do you know how
    much it can be compressed and how much WinRar will take it to compress.
    WinRar has an inbuilt functionality which can help you find that.

    Select one or multiple file which you want to compress, then on the winrar look for an “Info” Tab.Click that and you will get another window with 4 tabs. The Info Tab gives you all the data for your compression job. If the compression is not appreciable, you can decide to go ahead or leave it.

  4. Tushar Singh
    May 9, 2011 at 10:54 am

    Go to "add to archive" option for the file/folder in context menu.

    Then select "compression method" as BEST from the dropdown list. But remember not all files can be compressed too much. Only files that are raw/uncompressed can be compressed very highly.

    • Mike
      May 9, 2011 at 7:07 pm

      Another thing to consider is that higher compression result in slower speed.
      As Tushar said it the final ratio depends a lot on the file format and base compression but also on the actual content of a file.

      You can do an easy test using two Text files:
      file1.txt

      1234567890
      qwertyuiop

      file2.txt

      1111111111aaaaaaaaa

      The second file will always be lower in size although they have the same amount of characters. The difference is that for file1.txt each character has to be addressed in some way while file2.txt only needs two characters and how often it appears.

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