MG 1.1 Resized images and poor quality results
- Thread starter giorgino
- Start date
You've posted this in the XFMG forum, but it's not clear if you're referring to that specifically or XF attachments in general.
Can you give some example images? (Note that you might need to upload original images zipped or linked from elsewhere as we do some resizing here too.)
Can you give some example images? (Note that you might need to upload original images zipped or linked from elsewhere as we do some resizing here too.)
Image quality loss happens in forum threads and gallery as well (only where the resize function is active).
For example:
I uploaded:
1. The original image using xenforo.com upload function
2. The zipped version of the original jpg
3. The resized (1024x768) version downloaded from my installation.
As you can see, the resized version are of really poor quality
For example:
I uploaded:
1. The original image using xenforo.com upload function
2. The zipped version of the original jpg
3. The resized (1024x768) version downloaded from my installation.
As you can see, the resized version are of really poor quality
Honestly, the quality doesn't seem all that poor to me.
At least, it's mostly what I would expect when resizing a JPG image. If you zoom in you can see some of the compression artifacts.
You may wish to look at enabling Imagick processing of images (Attachment Options) to see if you can perceive any noticeable quality difference (or indeed switch back to GD if you're already using it).
Finally, you may wish to look at upgrading PHP and Imagick. I guess it's possible that some older versions may not handle the resampling quite as well as newer versions, but I'm not certain.
Other than that, this is basically what to expect when resizing JPG images.
At least, it's mostly what I would expect when resizing a JPG image. If you zoom in you can see some of the compression artifacts.
You may wish to look at enabling Imagick processing of images (Attachment Options) to see if you can perceive any noticeable quality difference (or indeed switch back to GD if you're already using it).
Finally, you may wish to look at upgrading PHP and Imagick. I guess it's possible that some older versions may not handle the resampling quite as well as newer versions, but I'm not certain.
Other than that, this is basically what to expect when resizing JPG images.
Use ImageMagick as it does a much better job of resizing JPG images and produces higher quality images that have less artifacts.
Thank you Chris for your support, but this quality isn't accetable for a photo community.
In general, is there a way to setup the conversion quality in Imagick?
Resizing on my mac don't include visible quality loss...
I'm already using imagick
I'm using PHP 5.6.27 and imagick 3.4.3 Do I need to upgrade?
In general, is there a way to setup the conversion quality in Imagick?
I already use it, thank you Andy
I did a quick forum resize test (GD). To me it looks like typical compression artifacts rather than a resize issue.
Perhaps the compression i set to a quite high level? Could that parameter be tweeked somehow?
(original)
(Resized & Zoomed in)
Perhaps the compression i set to a quite high level? Could that parameter be tweeked somehow?
(original)
(Resized & Zoomed in)
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