Posted by eholz1 on 01/06/07 17:18

One last question,

In terms of making thumbnails, resizing images, etc are there any other
programs that work better
(whatever "better" means) than GD??? I have a version of gallery
(menalto opensource program) and it seems to like netpbm, ImageMagik,
etc. are either of these better or faster, etc. Or are they more or
less equal??? My goal is to check size of original image (typically
3000px by 3072 px) and make a thumbnail, and resize the "big" image to
appropriate browser size (a poor man's gallery program).
and when a viewer clicks the thumbnail, display the bigger image via
php in browser.

eholz1

eholz1 wrote:
> Hello Jerry,
>
> I love your posts!!!
>
> Thanks,
>
> ehozl1
>
>
> Jerry Stuckle wrote:
> > Michael Austin wrote:
> > > Geoff Berrow wrote:
> > >
> > >> Message-ID: <1168063261.502489.160810@v33g2000cwv.googlegroups.com> from
> > >> eholz1 contained the following:
> > >>
> > >>
> > >>> I am using some php code to check the size of images, and then
> > >>> resize or determine new dimension for the image. GD seems quite slow.
> > >>> It takes about 5 seconds (plus or minus) to calulate dimension for 7
> > >>> jpeg images.
> > >>
> > >>
> > >>
> > >> You don't need GD to get image sizes
> > >> http://uk2.php.net/manual/en/function.getimagesize.php
> > >>
> > >
> > > if you are doing thumbnails you need neither.
> > >
> > > <a href='<?php echo $path ?>'>
> > > <img src='<?php echo $imagelist[$i] ?>' width='50' height='50'
> > > class='thumb'>
> > >
> > > I found this in a php script called imagebrowser.php (a google search
> > > should locate it...)
> > >
> >
> > And this is exactly what yous should NOT do. It causes the entire
> > (large) image to load, then be resized by the browser.
> >
> > It is much better to create thumbnails and send an image of the
> > appropriate size. Depending on the original image size, the size
> > difference is enormous. For instance, if the original image size is
> > 500x500, your thumbnail may be as much as 99% smaller than the original.
> >
> > --
> > ==================
> > Remove the "x" from my email address
> > Jerry Stuckle
> > JDS Computer Training Corp.
> > jstucklex@attglobal.net
> > ==================

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