Firefox 56 and below is no longer supported by Pluckeye.
I would like to, really. But Mozilla has stopped signing so-called legacy extensions, which means that it is not possible for me to update the code for Plucki, and have the result work in Firefox 48-56. Such versions of Firefox do not allow the user to use unsigned extensions.
So, if you want to use a pre-57 version of Firefox, what are your options?
- Use Pale Moon, a Firefox fork that is maintained and that allows legacy extensions.
- Use Firefox 47 or below and in about:config, change
xpinstall.signatures.requiredto false. This is not possible, but not recommended because using an old, unsupported browser makes you more vulnerable to malware, and malware is no fun.
- Try a modern Firefox , Chrome , Chromium , or other browser.