[magnolia-dev] [JIRA] (MGNLUI-4225) Too big drop in image quality when using image variation and cropping

Marcel Boer created an issue

Magnolia UI / https://jira.magnolia-cms.com/browse/MGNLUI-4225 MGNLUI-4225

Too big drop in image quality when using image variation and cropping

Issue Type:
Bug

Affects Versions:
5.5.4

Assignee:
Unassigned

Attachments:
image_quality_test.zip

Created:
19/Jun/17 2:13 PM

Environment:
Client: Voetbal International

Priority:
Neutral

Reporter:
Marcel Boer

Using image variation and especially cropping degrades image quality more than expected. When I upload an image using the image upload dialogue in the Content editor app (but also Pages or any other content app) and any kind of tranformation is applied to the image stored in the DAM by Magnolia the image quality is significantly less than when I would apply the same transformation using for instance Photoshop. Especially cropping has a very degrading effect.

Setting a higher quality in modules/imaging/config/generators/mte/outputFormat doesn't solve the quality loss percieved.

- Absolute worst case: cropping image in Magnolia causes quality to drop very heavily

- Still bad: directly uploading an image without cropping

- Much, much better: resizing with photoshop (bypassing Magnolia completely)

See image_quality_test.zip and check the quality difference.

https://jira.magnolia-cms.com/browse/MGNLUI-4225#add-comment
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