A Firefox extension (add-on) for removing end of video overlays on YouTube videos.
By default, the extension is enabled. If you would like to disable it, press the Enabled button on the extension popup and it will disable the same. As soon as you click anywhere in the YouTube webpage, changes should become visible. If they don't and there are still overlays at the end of a video, try refreshing the webpage.
Some components of this code are licensed under the MIT License. The rest of the code is released under CC0 1.0 License.