Board Thread:Support Requests - Getting Technical/@comment-32734993-20190614073329/@comment-1038387-20190614081127

Bots like AWB have a function to fix common spelling errors, but only if you run the bot; it doesn't alert or autocorrect users on editing like a spell check or AbuseFilter. It's not very intelligent; it changes many false positives and does not change many true negatives. Generally, don't run that without double checking. You'd end having to fix more than it "fixes".

A bot can only do actions on the wiki. It cannot download an image, open it in external image editing software, compress it, save it and reupload it.