Manual set the compress level of thumbnails

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kxmp
Posts: 8
Joined: Thu Nov 10, 2016 4:00 pm

Manual set the compress level of thumbnails

Post by kxmp » Thu May 24, 2018 7:35 am

The default pre-set quality is too low. (even jpg high quality)
The thumbnails just have many noise dot and artifacts.
What about add a setting that can manual set the compress level? Like q85 q90 ...etc
It's more flexable and better than before. :D

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m.Th.
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Re: Manual set the compress level of thumbnails

Post by m.Th. » Thu May 31, 2018 7:39 am

kxmp wrote:
Thu May 24, 2018 7:35 am
The default pre-set quality is too low. (even jpg high quality)
The thumbnails just have many noise dot and artifacts.
What about add a setting that can manual set the compress level? Like q85 q90 ...etc
It's more flexable and better than before. :D
Ok, IMHO it can be implemented. However I strongly think that your problem comes from the fact that the thumbnails stored in your catalog/DB are way too small compared with the thumbnails which you see on the screen.

Do like this:

1. Open a folder of your choice with "many noise dot and artifacts".
2. Go to Tools | Settings | Catalog and press {Get thumbnail size} (optionally select WebP - it should be better)
3. Press Ok to close the dialog
4. In your folder press Ctrl+A to select all images.
5. Go to View | Rebuild Thumbnails

It is better now?
m. Th.

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kxmp
Posts: 8
Joined: Thu Nov 10, 2016 4:00 pm

Re: Manual set the compress level of thumbnails

Post by kxmp » Thu May 31, 2018 10:40 am

m.Th. wrote:
Thu May 31, 2018 7:39 am

Ok, IMHO it can be implemented. However I strongly think that your problem comes from the fact that the thumbnails stored in your catalog/DB are way too small compared with the thumbnails which you see on the screen.

Do like this:

1. Open a folder of your choice with "many noise dot and artifacts".
2. Go to Tools | Settings | Catalog and press {Get thumbnail size} (optionally select WebP - it should be better)
3. Press Ok to close the dialog
4. In your folder press Ctrl+A to select all images.
5. Go to View | Rebuild Thumbnails

It is better now?

Nope. I'm using 0.5x scale to view thumbnails now.
It's good but size of thumbnails on disk is too large.

1:1 view is horrible. Jpeg is better than webp. The webp is just smoother but have worse color.

And what I said "many noise dot and artifacts" is just for 1:1 view.

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