|  06-14-2018, 12:38 AM | #1 | 
| Junior Member  Posts: 2 Karma: 10 Join Date: Jun 2018 Location: Brussels, BE Device: none | 
				
				Batch mode to compress images
			 
			
			Hello, I have a huge library (> 20k books) and most of them are related to travel and photography. These books sometimes have huge pictures and I'm spending a lot of time to compress the images from each book, one by one. Is there any way to run a batch to compress more than one book into a row? Thank you! | 
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|  06-14-2018, 12:54 AM | #2 | 
| creator of calibre            Posts: 45,604 Karma: 28548974 Join Date: Oct 2006 Location: Mumbai, India Device: Various | 
			
			Use the polish books tool, it can operate on all selected books.
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|  06-17-2018, 04:33 AM | #3 | 
| Junior Member  Posts: 2 Karma: 10 Join Date: Jun 2018 Location: Brussels, BE Device: none | 
			
			Thanks for that!
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