[Libreoffice-bugs] [Bug 140476] UI: different compression scales used within same dialog for different formats

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=140476

--- Comment #6 from Telesto <telesto at surfxs.nl> ---
(In reply to Tomaz Vajngerl from comment #5)
> (In reply to Telesto from comment #4)
> > There is a 'common' aspect here.. set compression high.. and will usually
> > get bad quality. The but you can define compression based on quality or by
> > compression itself.. but well my take
> 
> You don't get bad quality if you set compression to 0 as opposed to 9. You
> get exactly the same quality for all compression levels.

oops, PNG being lossless format. 

Why is compression that prominent; as it has so little influence. Why does same
position in the dialog used for 'different things'

Why doesn't the dialog show what the optimal compression level is.

Similar story different program:
https://www.howtogeek.com/203979/is-the-png-format-lossless-since-it-has-a-compression-parameter/

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