Improve JPG Quality in Imagecache and ImageAPI

Posted on 2nd June 2010

Whilst uploading images for my Projects and Testimonials sections, I noticed that the Imagecache-scaled images weren't as high a quality the originals on my Mac. I did some searching online and found out that, by default, Drupal resamples uploaded jpgs to 75% of their original quality.

To increase the quality of your images, change the setting in the two following places:

  • admin/settings/imageapi/config
  • admin/settings/image-toolkit

The first one is for ImageAPI. Primarily, this means Imagecache presets. The second one is for core's image.inc. This is used for resizing profile pictures in core, and some contrib modules. Once changed, I did have to flush each of the Imagecache presets (admin/dist/imagecache) for the changes to take effect.

About Me

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Oliver Davies is a Full Stack Web Developer and System Administrator based in the UK. He is a Senior Software Engineer and Technical Team Lead at Inviqa and a part-time freelancer specialising in Drupal and Symfony development and Linux systems administration.