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  1. Moodle
  2. MDL-50175

Optimize Moodle Image Files

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    Details

    • Type: Improvement
    • Status: Closed
    • Priority: Minor
    • Resolution: Fixed
    • Affects Version/s: 2.9
    • Fix Version/s: 3.1
    • Component/s: Themes
    • Labels:

      Description

      Using optipng, advancecomp, and jpegoptim I am able to losslessly reduce the size of images in the default Moodle install by about 1388KiB.

      I used the following commands:

      # Optimize PNGs by removing unnecessary data and optimizing filters with optipng then optimizing deflate compression with advdef
      		 
      find -path ./lib -prune -o -type f -iname "*.png" -exec optipng -strip all -o7 {} + -exec advdef -z4 -i50 {} +
      		 
       
      		 
      # Optimize JPEGs by removing unnecessary data and optimizing encoding with jpegoptim
      		 
      find -path ./lib -prune -o -type f -iregex ".*\.jpe?g$" -exec jpegoptim --strip-all {} +

      I have a commit up on GitHub with the images optimized .

      I shyed away from optimizing /lib because I read another feature enhancement on this tracker where a moodle dev didn't like /lib being modified. Additional gains can probably be had by optimizing that directory as well.

        Attachments

          Issue Links

          blocks

          Improvement - An enhancement to an existing Moodle feature. MDLSITE-4426 Add image optimisation step to prechecker/release process

          • Minor - Minor loss of function where workaround is possible
          • Open
          has been marked as being related by

          Improvement - An enhancement to an existing Moodle feature. MDL-49663 Minify SVGs to save half their size

          • Minor - Minor loss of function where workaround is possible
          • Closed
          will help resolve

          Improvement - An enhancement to an existing Moodle feature. MDL-37180 Image files should be optimized

          • Minor - Minor loss of function where workaround is possible
          • Closed

          Improvement - An enhancement to an existing Moodle feature. MDL-49663 Minify SVGs to save half their size

          • Minor - Minor loss of function where workaround is possible
          • Closed

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                Dates

                • Created:
                  Updated:
                  Resolved:
                  Fix Release Date:
                  23/May/16