[Gimp-user] Thickening/darkening lines of scanned images

As with everything graphics, all depends on the image(s).  Assuming
Gimp 2.10 and Windows

First thing to try is Filters -> Generic -> Erode which grows dark
areas. Try applying a couple of times. See: comparison screenshot.

If they are reasonably clean scans  then you should get a result.

For something more sophisticated but still easy to use, try the Gimp
gmic plug-in www.gmic.eu  There is a Windows installer for Gimp 2.10.
This has hundreds of filters for various effects but there is one -
repair scanned documents. See: screenshot.  Adjust sliders to suit.

Thanks so much, really helpful.

Chungster (via www.gimpusers.com/forums)

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