XKit 
XKit is a small extension framework that powers tweaks for Tumblr.
Get a release build
Currently we support Firefox and Chrome officially.
We support Opera and Edge unofficially using the same file as the Chrome extension.
Support 
First, check the list of issues, and see if there's something there that looks like the problem you're having. Otherwise, file a new issue or come join our support chat; just hop on over to our Discord server. We don't bite!
Contribute 
XKit needs all the help it can get! If you want to help out, the first step is finding something going wrong. There's a long list of known issues on our issues page. The next step is to fix the bug.
Come join us in the XKit Discord if you get stuck, or want some advice! There's normally a few people lurking in there any time of day.
Writing a New Extension
Read the guide on writing a new extension!
Develop XKit
Review the project prerequisites and learn how to build XKit from source.