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Scaling an image to a fixed file size
#2
(04-24-2024, 10:07 AM)julescousins Wrote: Hi there, newbie here.
I am a very basic user, doing simple, repetitive tasks, which typically involve cropping an image to a rectangular aspect ratio of 1.308:1 but to different pixel sizes. The online service the pictures are intended for has a maximum file size of 187kb per image, so I then scale my images, which are of different file sizes (so I can't use a default percentage scale), possibly 2 or 3 times until it is just under 187kb. 
Is there an easier way to scale my cropped image to a fixed file size?
Many thanks,
Jules.

An easier way ? I do not think so, You can get a file size estimate in Gimp but only for jpeg exports. 
In the jpeg export dialogue 
Set the sub-sampling to 4:2:2 - that gives smaller file sizes
Enable the show preview option and above that is a file size estimate that changes with the compression setting.

Depends on end use, but I would say, if the required compression value comes out below 70 then cancel the export / resize and try again.

   
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Messages In This Thread
RE: Scaling an image to a fixed file size - by rich2005 - 04-24-2024, 12:22 PM

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