Great extention. Compared to the oringinal BR app is that it keeps the webpage in tact. It would be gread if this extention can also be made for Chrome.

Also recommended by the author of this article: https://www.makeuseof.com/what-is-bionic-reading-why-should-you-use-it/

Works more consistently than the other two I tried... Also nice customization

Works excellent. Many options for customisation. Currently best Bionic Reading App for Firefox.