file size increases

[monmon]

I have a question about XnConvert.
When I try to process images to reduce their file size, sometimes the file size increases instead.
Is there a way to avoid processing if it is going to increase the file size?

[xnview]

which output format?

[monmon]

.jpg

[xnview]

.jpg

so in this case, you would like to keep original file?

[monmon]

I will explain with an image.
Is this kind of configuration possible?

I know how to reduce the size and delete the original image.

[xnview]

you have the setting 'Keep original file when encoded...' but the current version has some issues...

[monmon]

Thanks for the answer.
I'll try to find another way.