Properly authored www pages will allow you to have that final control.
Major parts of the following was once written by a highly regarded CSS
designer...
<
http://www.css.nu/articles/font-analogy.html>
...it still illustrates most of today's www situation.
[...]
If I create a painting & you don't like where I've placed some
brushstrokes or the colors I've used or the size of it, should
you be allowed to rearrange it to your liking?
No, of course not; the thought of that would not even cross my mind.
OTOH, would you like to "control" my viewing angle when I look at your
artwork? What if I'm very short or very tall? or if my eyes are skewed
so I need to stand at one or the other side to get _my_ best view.
It seems to me that you are comparing apples to oranges here.
The original idea, that later lead to the invention of the www, was to
find a method that would allow "global" access to information that was
available on basically incompatible systems.
Your painting canvas and my browsers view port are pretty good examples
of initially "incompatible" systems, but there is nothing in the
technology of the www that prohibits you from making your painting
available to me for viewing in my browsers view port.
The 'IMG' and 'OBJECT' elements stands at your service for that part,
still it shall be up to me to adjust my view port such as it gives me my
best possible view of your painting, right?
The basic "mistake" of so many www "designers" is to think of other
peoples browser view ports as "the designers own canvas" that can be
used at will to present some pixel perfect presentation of e.g. the
Waffle House food menu, or any other thought out design "dream".
But that is not the base of this media, the WWW is supposed to be a
"World Wide" accessible database that contains the, at any time, best
collection of acquired human knowledge, all relevantly linked together
with those hyperlinks that constitutes the threads in the "Web".
Just about anything can be housed inside such a concept, but it has to
be "housed" in a way that makes it widely accessible.
Feel free to present a painting or two to me over the www, but please
don't do it in a way that makes it obscure to me to get my best viewing
experience from it.
What if the canvas was stretched on a cheap, prefab from the five & dime
store. I didn't build it myself with high quality materials & excellent
workmanship. Still, the painting is spectacular. Imagine if it would not be
allowed in a juried show or to be viewed/sold in a gallery because of the
shoddy underside.
As I have tried to describe, the www is your free place to present
anything you want as you see fit.
But, the size of your possible target area will vary, all depending on
how clever you are to make your material accessible on a wide scale.
[...]
Re font size & how it's displayed, I haven't seen great variation.
And the Dollar Store sells reading glasses for $5.00.
Won't help me much some 20 years from now maybe. I have repeated cases
of glaucoma running in the family line and may have to look forward to
total blindness in the future (I'm 56 today).
Your lesson during that time period will be to figure out what
ALT-ernative www content you should give to any one of your paintings so
that they will still be accessible to me as a sound or tactile www
experience
There is at least initial provisions for that too, already built into
current www technology.