graphicsimage editingpreview
I have a few scanned in images of some some pages that I need to digitise. They're each roughly around 5.1MB with 600 DPI, but I can't really afford to have scans so large because I only have around 16GB to last for another 7 months.
I want to decrease the image size but I need to have minimal quality loss of the image. Can this be done?
The Preview does not lower the image quality, but will fit it in the given parameters.
If you use Preview to open a original image: Example:
5.5 MB file size with Dimensions of 3648 × 2736 pixels
Now open the Preview Tools - Adjust Size to see the current settings.
The default resolution is set to 72 which is standard for web applications.
In that window you can set it to the original size/resolution.
Now if you are using a copy/paste to move the image to Preview, the resulting quality will depend on the copy/paste settings. That can be found in the application it self.
What I ended up doing was simply break the textbook chapters into individual PDF files. Not the ideal solution, but at least the saving process for highlighting is relatively quick with chapter files.
Best Answer
Just use Preview, and select
Adjust Sizefrom theToolsmenu.