I have never noticed any ads on imagus since the day I used it
However, you should always be wary of using extensions like these. When an extension gets really popular and sells out, they start selling your data and/or injecting malware scripts
Adblock Plus → sold out and sells ads to users, ublock origin does not
Hoverzoom → Injects malware, imagus does not
I check a bunch of reddit forums and https://alternativeto.net/news/all so I can stay up-to-date on which extensions / webapps have either lost my data, sold out, and/or security leaks, so I can find better alternatives in the mean time
However, imagus is by default extracting and sending your browsing data. Just remove it on the OPTIONS
