I created a site and decided that in order to show image thumbnails on list
pages I do not downsize images and store them phisicaly on server rather have
only one larger (max 800x800px) image file which I read into memory resize it
to thumbnail size and write it to the browser with the cfimage
Does anybody use this way of image processing instead of storing thumbnail
files on server or it is really not a best practice? Could I have somehow alt
text on my images? Any other pros or cons I haven't mentioned?
ALT text would be controlled by the HTML calling the image, not the
script
Any oppinion is appreciated.
Well, IMO, the big idea of thumbnails is to show many images roughly and
in the same page,
so that the user can choose only the one in want in large format.
Having to read and downsize 10 or 20 or more images is not really
compatible with this purpose.
The images
i totally agree with Claude: unless there is a better reason to not have
thumbnail-sized images, you should not tax your server with all the
cfimage resizing - it is a very memory-intensive operation. i use this
on-the-fly functionality on one of the sites to add a watermark to a
large-size
You can get the best of both worlds very easily. Create an empty
directory to store all your thumbnails, and then write them all as
/thumbs/IMAGEID-WIDTH-HEIGHT.jpg into your pages. Then use
mod_rewrite to do a file existence check. If it exists, let Apache
serve it out, otherwise have
you only need wipe that directory clean and
everything will start being regenerated.
Very brilliant indeed.
~|
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