Poor quality thumbnails (CB Gallery)

Hello,
I just noticed that the thumbnail (CB Gallery) were of poor quality ; I specify that the downloaded pictures are correct (I tried with pictures of different qualities, besides they saffichent very well in general ) , I did not find where it came from ?
Do you know what can happen?
Best regards.
Eric

Increase the thumbnail size within CB Gallery parameters if you want the uploaded thumbnails to be larger. Regardless they still will be downsized somewhat to fit within the container; there's no avoiding that. A thumbnail is just a preview though so it shouldn't be expected to be super high quality. It's not pixelated or anything terrible like that in any of my tests though so I'm not sure what you mean by terrible without a screenshot of your issue.

Hello,
Thanks for your answer.
I did not talk about the physical size but the visual quality .
I enclose a screen capture.



Best regards.

Eric

The image is either too large or too small. Either one can cause artifacts. An image that's too large downscaled will lose pixel data. An image that's too small will be upscaled (by CSS to fit inside the container), which will stretch the pixels.

That's just how image processing works and is nothing specific to CB Gallery. It'll do the same if you donscaled or upscaled in Gimp, Photoshop, or MS Paint for example; with the except their processing engines are probably better than PHP GD2.

If the image is too small and the CSS upscaling is doing it then you'll need to make the photo boxes smaller, but you'll never have an ideal solution as someone is bound to upload a tiny image for whatever reason. If the image is too large then you can trying configuring and using ImageMagick instead, which has better processing than PHP GD2.