Image sharpening is not working

Sharpening filter is applied to generated thumbnails using standard functions provided by the GD and Imagick extensions:

• GD: function imageconvultion()
• Imagick: function Imagick::sharpenImage()

If the filter is not applied:

1. Make sure that option "Sharpen thumbnails" in WebAsyst Photos section "Settings" is enabled.
2. With the "Sharpen thumbnails" option enabled, sharpening filter may still not be applied to image thumbnails. This is possible with some server configurations. We encountered servers where the image sharpening functions were defined but still no sharpening took place when it was called within the code.
   In such cases we suggest to ways to solve the problem: either to switch from Imagick to GD (or vice versa) in WebAsyst Photos settings, or to contact the web hosting administration to have the non-functioning sharpening function correctly configured on the server.

Tip: In order to find out whether GD and Imagick are supported by your server and whether the sharpening filter is correctly applied to uploaded photos you can use our simple test script. Download it (64 KB), extract the archive into an empty server directory (e.g. image-test) and run it in a browser (e.g., at http://domain.com/image-test/index.php). This script will determine whether the GD and Imagick extensions are installed and enabled on your server and will attempt to apply the sharpening filter to a demo image.