If you want to allow images by default, there are two basic ways to go about it.

If you’re not sure which to do, try modifying the existing configuration first.

modifying the existing configuration

If the following commands are run in a console, Plucky’s default image and video blocking will be disabled.

pluck - block image/
pluck - block video/
pluck - block application/mp4
pluck - block application/octet-stream
pluck - block application/vnd.rn-realmedia
pluck - block application/vnd.rn-realmedia-vbr
pluck - block application/x-bittorrent
pluck - block application/x-iso9660-image
pluck - block application/x-shockwave-flash
pluck - block application/x-silverlight
pluck - block audio/x-pn-realaudio

completely clean slate

To completely clear the configuration, use pluck clear. Any accumulated changes will be forever lost.

pluck export >>my-old-settings.txt
pluck clear

After running pluck clear, you can build a configuration of your choosing. Plucky will block nothing by default.

Note that this command disables all features including the system feature, so you need to re-enable that command if you run pluck clear.

next steps

See how to block only bad sites for some ideas on configuring Plucky from here.