Re: Image sizes

On 11 Apr, 18:44, Kate Brown <elv...@xxxxxxxxxxxxxxxxxx> wrote:
On Sat, 11 Apr 2009, Jack (jack.harri...@xxxxxxxxx) wrote





Occasionally people link to intersting photographs on their websites.
However, a recent check shows that some were over 3,000 kB and are
published at the full size of perhaps as much as 10 megapixels.   (eg
3,600 pixels x 2,700 pixels)

Those sizes may be fine for the lucky few with fast broadband.  Most
of us don’t have that luxury and such images take forever to download.

There are (to the best of my knowledge) no hard and fast rules about
image sizes on websites.  But as a rule of thumb, I generally resize
to no more than 1000 x 750 pixels and compress to be fewer than 100
kB.

Here’s an example sent in by a glider pilot and on my weatherjack
site:

http://s214580749.websitehome.co.uk/photos/photo-229-MikeGreenwood.jpg

It’s a mere 74 kB but perfectly adequate for web publishing but
perhaps not for printing.  (It shows mountain wave cloud over Spain)

Both Photoshop (not free) and Irfanview (free, plug-in separately
downloaded) have options to 'Save for Web'.  Resize first then apply
'Save for Web' treatment.  I also think this acts as a bit of copyright
help - even if someone pinches your picture they can only use it on a
screen, as it's too small to print successfully.

--
Kate B

PS 'elvira' is spamtrapped - please reply to 'elviraspam' at cockaigne dot org dot uk if you
want to reply personally- Hide quoted text -

- Show quoted text -

A large number of different photo editting applications which allow
quite complex manipulations of photos are available free, such as
Serif photoplus 8. I only actually do it this way for attaching
photos to emails etc. I set the defaults on my DTP S/W to do it when
it generates the HTML.

Graham
Penzance

www.easterling.freeserve.co.uk/weather.html
.

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