Crop JPEG without decreasing quality

NM
Posted By
Nicolas Mittelmaier
Nov 30, 2003
Views
430
Replies
1
Status
Closed
Hi there,

I am looking for a way to remove the white stripes around my scanned photographs. Cropping a file is not difficult, but when I use XnView for example the file size increases after saving at almost 100%.

Why is this? I know that saving jpegs over and over, reduces the quality of the picture, but how can the file size actually increase?

And even more important: How can I crop the jpeg without losing quality? If this is not possible: How can I crop the jpeg without making the file size increase?

Thanks for any hints,
Nico
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TE
Toke Eskildsen
Nov 30, 2003
Nicolas Mittelmaier wrote:

[Snip Cropping a JPEG and saving at 100%]

Why is this? I know that saving jpegs over and over, reduces the quality of the picture, but how can the file size actually increase?

Because it wasn’t saved at 100% before.

And even more important: How can I crop the jpeg without losing quality?

There’s a list of such programs at
http://jpegclub.org/losslessapps.html

They all support lossless rotation and some support lossless cropping.

How to Master Sharpening in Photoshop

Give your photos a professional finish with sharpening in Photoshop. Learn to enhance details, create contrast, and prepare your images for print, web, and social media.

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