Supports Pale Moon [25.0a1pre - 28.*]. NOTICE: The Browser you're using may not be supported by HTerr. If you believe this to be in error, please check your browser's User Agent settings.
Welcome to the HTerr home page! This extension adds fallback error pages for websites that return HTTP errors with no content.
HTerr was just created in September of 2020, after Mozilla Firefox and Thunderbird had already converted to WebExtension standards, and was created specifically for Pale Moon.
HTerr is free for use or modification without limitation. However, it comes with no license, warranty, or guarantee of any kind. That being said, you can still ask any questions in the Comments section below, or contact me directly for assistance.