While the city slept, Wladimir Borsov <wl*******@gmx.net> feverishly typed:
As well known for <IMG ...> tags in web pages a width and a height
attribute can be applied. What I want to do now is to fix the width
for ALL the images on my web page
to exactly lets say 70 pixel regardless how big the originals are.
The height should be adjusted proportional so that the resulting
thumbnail is not distorted. But as far as I know there is no such
attribute like
<IMG SRC=...... WIDTH=70 HEIGHT="Adjust proportional to Width"> ....
You can use a server-side solution, such as PHP to do the maths. Off the top
of my head, if you know the original image width and heght (if not, no
problems as you can get them using PHP) something like the following should
work;
<? php
$desiredwidth = 70;
$originalwidth = 100; // replace originalwidth and originalheight with
whatever the image dimensions are...
$originalheight = 200; // ... or find a better way of getting them!
$ratio = $originalwidth / $desiredwidth;
$desiredheight = $originalheight / $ratio;
print("<img src=\"whatever.jpg\" width=\"$desiredwidth\"
height=\"$desiredheight\" alt=\"whatever\">\n");
?>
I haven't thoroughly checked this, so the maths may be wrong! But it still
shows a way to do it.
Remember, though, that if an original image is smaller than 70 pixels wide,
then this may result in distortion of the image as it will be stretched.
Remember also that this is a bad way to make thumbnails of large images, as
the full size image file still has to be loaded, regardless of how small you
are making it appear on the screen.
Hope that helps,
Nige
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