How to organize content of slides for a conference presentation?
It is better to finish early than late (if they would let you). Do not
try to say too much. Then try to be informal, to give a feeling and
intuitive understanding for what you are doing. If you include an
equation, you probably want to explain it informally. It is often unlikely
that most people will follow details that are too technical.

Part, or all, of the presentation is really advertising for the
paper. Make then understand the concepts, and why it is interesting
and new. But you should probably skip the technical details of proofs
or programs.  However, relating your work to existing work is
important: the audience will want to understand why they should spend
time reading you paper, what advances they will get beyond what they
already know.  If they are interested in a specific detail they
consider crucial, they will as a question. But you are unlikely to
know in advance what it will be.

Remember, you will not tell your whole paper in one talk. Else the
talk would be longer, or the paper shorter.

If you think that some details are important and that you may have
question about them, though they would overload your talk, you can
prepare slides to answer questions about them. And you use them if
needed.  But do not mix them with the other slides, put them at the
end.

Your PDF (PDF is generally accepted) should be organized so that you do not have to think about it
during the talk. You will be busy enough.