attaching an image to an e-mail, ask yourself some questions.
do you want the recipient to see?
If all you want to do is show them a small illustration then don’t
send the original, probably king-size image. It’ll probably
have to be scrolled on their screen so they’ll only see a
bit at a time of an image of a size larger than their e-mail window.
Pixel dimensions of something like 600 by 400 are about the maximum
usually appropriate and you can often get away with much less.
What might they
to do with it?
If they need it for artwork for printing then they will need a maximum
resolution copy – at the dimensions required. So find out
what size in inches or centimetres they need and use a resolution
of at least 200 pixels per inch. It’ll be a sizeable file
so the next section is important. You may have to think about other
methods of getting it to them.
If they need it for showing
on screen then a resolution of about 72 pixels per inch is fine
as few monitors display more than 100. For web use, you could compress
the image to further reduce the file size and, as there is only
a limited range of colours that can be displayed by browsers, it
may be worth previewing what you’re sending at various compression
and colour depth levels and you’ll see what you can get away
speed do they have?
If the recipient is still on a dial-up internet connection then
they will not appreciate having to wait for ages while your image
downloads unless they have specifically asked for certain sizes.
As a general rule, a 100Kb file will take about 15 seconds. No-one
on dial-up will be happy waiting for anything measured in Mb so
Broadband users should be able
to manage most things you can throw at them, however.
speed do you have?
The same applies at your end too, although it may not seem as important.
Just remember that pressing Send will merely start the process and
it may be several minutes before your message has actually set off
on its journey.