Saving jpg in Paintbrush

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Platypus replied

18 September 2014, 13:15
JPG direct from camera won't be compressed, so re-saving it will reduce the size dramatically. Check the "Save" options and reduce the compression to sacrifice less quality (I'm not familiar with PaintBrush but I'd be surprised if there's no option to adjust the amount of comprerssion).
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d000hg replied

18 September 2014, 08:42
Originally posted by expat View Post

If opening a JPG and then saving it changes the size, it is probably being saved with a different compression level. This is user-configurable.

In MSPaint?
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expat replied

18 September 2014, 07:40
Originally posted by d000hg View Post

Doesn't explain why opening a 9Mb JPG and saving it leads to a 3Mb JPG.

Paint (I doubt you're using Paintbrush surely?!) will have default quality settings which are not the same as whatever created the files.

Paint.Net allows you to directly control the JPG quality, as do other dedicated conversion tools.

If opening a JPG and then saving it changes the size, it is probably being saved with a different compression level. This is user-configurable.

I note in passing that saving as TIF compresses, but losslessly.
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d000hg replied

16 September 2014, 15:16
Originally posted by stek View Post

jpg is by it's very nature lossy....

Doesn't explain why opening a 9Mb JPG and saving it leads to a 3Mb JPG.

Paint (I doubt you're using Paintbrush surely?!) will have default quality settings which are not the same as whatever created the files.

Paint.Net allows you to directly control the JPG quality, as do other dedicated conversion tools.
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vetran replied

16 September 2014, 14:48
Paint.NET - Free Software for Digital Photo Editing
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cojak replied

16 September 2014, 13:47
PNG is supposed to be lossless, but doesn't compress photographs very well (better off using .bmp for those if you don't want to lose quality).

So it depends what you're compressing.
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stek replied

16 September 2014, 13:42
jpg is by it's very nature lossy....
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ContractorBanking started a topic Saving jpg in Paintbrush

16 September 2014, 13:38
Saving jpg in Paintbrush

Hmmm, noticed that saving jpg's in Paintbrush reduces the size by a third - is quality being sacrificed?

Just used a 9MB file and it came to around 3MB after saving.. odd

As an aside, I'll be trimming some jpg's - was going to do it in Paintbrush, but thinking of using another application is quality is being sacrificed - anyone care to comment..

cheers
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