inclusion of a "zoom" slider

[reuspppp]

Acknowledgements

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Feature details

Inclusion of a slider that permit to zoom more or less on a page and having the chosen zoom level persist in the reader so that you don't have to re-set it for each page or chapter.

example :

Additional information (optional)

I am requesting that because with the option available right now the pages are either confined to the height of the screen and too small or confined to the width of the screen and too big.

too small :

too big :

[titan-19]

this the only serious problem on the app, with a zooming features it will be perfect.