Legacy ImageMagick Discussions Archive

fmw42 wrote: ↑2017-09-20T11:48:13-07:00 Does this help?

Code: Select all

convert -density 150 "ImageMagick Example.pdf" -resize 50% -unsharp 0x1 test2.pdf

What parameters do I have to modify to make the sharpening even more intense?

Wow, that's works great, but now my file sizes are huge.
What's the best way to get back to much smaller file sizes?

Example: https://drive.google.com/file/d/0B1LWck ... sp=sharing

What would be an example script to do the sharpening the right way using the resizing?
The file size should be about the same as it was before.

convert -density 300 input.pdf -sharpen 0x1 output.pdf

This command seems to be doing the same thing, or am I mistaken? It seems to use Ghostscript under the hood.

Why woudn't "convert -density 300" work just the same way?

I have a PDF file with multiple pages only containing scanned images. What's the quickest way to sharpen the PDFs using imagemagick? Or do I have to convert the file into images first using another tool?

Thanks in advance!

Thanks man, I really like your website and have used your scripts before.
The only problem I have with your script is that the filter removes big dark shapes, like logos and so on (see the punch holes in the page). Is there any way to prevent this?

I've scanned a page of notebook paper and my scanner always introduces this weird noise.
I want to keep the lines and also the notes themselves.
Any ideas?

Example: https://i.imgur.com/4dl23SS.jpg