Thumbnails for JPEG and other types

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wolalodosz
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Joined: Mon Nov 21, 2016 3:55 pm

Thumbnails for JPEG and other types

Post by wolalodosz »

Probably a stupid question, but... As you can see on the screenshot, thumbnails for images that are smaller than the specified thumbnail size (346x276) have the same size that the image itself, with the exception of the JPEG file, as the thumbnail for it is scaled to the specified size. How do I make XnViewMP scale (enlarge) all thumbnails for all image types? "Custom thumbnail size" is checked, "Create from original image if embedded thumbnail is smaller than thumbnail size" is checked too (though BMP and WebP don't support embedded thumbnails, as far as I know).
Clipboard 1.jpg
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xnview
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Re: Thumbnails for JPEG and other types

Post by xnview »

your jpeg file seems to have a bigger embedded thumbnail
Pierre.
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user0
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Re: Thumbnails for JPEG and other types

Post by user0 »

xnview wrote: Sat Aug 26, 2023 1:34 pm your jpeg file seems to have a bigger embedded thumbnail
try these test files
jpg_thumb_size.zip
JPG definitely slightly bigger (starting from 222 thumb size)
in lightroom, acdsee - all thumbs are the same size
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xnview
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Re: Thumbnails for JPEG and other types

Post by xnview »

user0 wrote: Sat Aug 26, 2023 3:29 pm
xnview wrote: Sat Aug 26, 2023 1:34 pm your jpeg file seems to have a bigger embedded thumbnail
try these test files jpg_thumb_size.zip
JPG definitely slightly bigger (starting from 222 thumb size)
in lightroom, acdsee - all thumbs are the same size
Right, it's a bug in the jpeg thumbnail function.
How do I make XnViewMP scale (enlarge) all thumbnails for all image types?
So you would like a setting to always scale up small thumbnail, right?
Pierre.