1.25x speed implementation is here

I couldn’t attach the image in the related thread, so I decided to create a new.

It’s the settings of the Shortkeys extension to assign keys for moving backward and forward in the scale of speeds.

Chrome:

Firefox:

For backwards, copy the following line just once:
document.querySelector(‘.controller-item–speed’).click();

For forwards, copy the same line 7 times.

Don’t forget to click on “save shortcuts”

Works perfectly.

Also, if you usually use the Light theme of the reader, but want to switch quickly to the Dark theme, you can add another shortcut, with this line:

document.querySelector(‘body’).classList.toggle(‘is-dark-theme’);

Or the other way around, if you usually use the Dark Theme:

document.querySelector(‘body’).classList.toggle(‘is-light-theme’);

I’ve assigned shift+d for this.