malibusa Posted June 7, 2019 Share Posted June 7, 2019 Hi, I am a basic user of paint.net, and use it for basic things I have an image JPG file, say of size 1MB, after scanning the original image opened paint.net cropped the image to the required then saving it now, it shows the Quality option when saving, which i keep as default 95 but when saving the file, the file size gets more, instead of 1MB, it could go up to 3MB what's the wrong thing I did? and how to save it the image has been scanned on 300dpi, and I would keep the same of the cropped area of the original image Quote Link to comment Share on other sites More sharing options...
MJW Posted June 8, 2019 Share Posted June 8, 2019 The first thing I wonder is, what was the Quality of the original scanned image? If it was lower than 95, I'd expect the file to get larger. Quote Link to comment Share on other sites More sharing options...
malibusa Posted June 8, 2019 Author Share Posted June 8, 2019 18 hours ago, MJW said: The first thing I wonder is, what was the Quality of the original scanned image? If it was lower than 95, I'd expect the file to get larger. how to know it? is it the dpi in properties? Quote Link to comment Share on other sites More sharing options...
MJW Posted June 8, 2019 Share Posted June 8, 2019 Unless it's a setting in the scanning software, I'm not sure. It could possibly be in the image meta-data, but when I checked the JPEG file for photo I took (using the default Windows "View Image Info"), the compression field was blank. According to Wikipedia, 50 is considered to be high-quality, so 95 is probably higher than usual. My actual point was just that there could be a simple explanation for the size increase. I'm pretty sure Paint.Net doesn't rely on a custom JPEG conversion algorithm. It probably uses one built into Windows. EDIT: The dpi is unrelated to the compression. 1 Quote Link to comment Share on other sites More sharing options...
malibusa Posted June 9, 2019 Author Share Posted June 9, 2019 thanks On 6/8/2019 at 11:06 PM, MJW said: Unless it's a setting in the scanning software, I'm not sure. It could possibly be in the image meta-data, but when I checked the JPEG file for photo I took (using the default Windows "View Image Info"), the compression field was blank. According to Wikipedia, 50 is considered to be high-quality, so 95 is probably higher than usual. My actual point was just that there could be a simple explanation for the size increase. I'm pretty sure Paint.Net doesn't rely on a custom JPEG conversion algorithm. It probably uses one built into Windows. EDIT: The dpi is unrelated to the compression. Quote Link to comment Share on other sites More sharing options...
Rick Brewster Posted June 9, 2019 Share Posted June 9, 2019 Paint.NET does in fact use the JPEG decode/encoder that's built-in to Windows. Quote The Paint.NET Blog: https://blog.getpaint.net/ Donations are always appreciated! https://www.getpaint.net/donate.html Link to comment Share on other sites More sharing options...
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