1. Only use the one image. Make the original images in jpg and simply resize
in display code using either html or css. This is basically what you've been
doing now, but you've been using GIF which doesn't scale well because it's
an indexed color image. This might be the best approach if your two sizes
are within about 10% of each other. The quality difference is likely to be
negligible, and the caching benefit will be the major factor. But only you
can be the judge of quality for your needs.
2. Scale the images with reinterpolation and save the new image at the new
size. Then upload both the original and scaled set each day.
There are various desktop tools that will take mere seconds to work through
the 40 images. Two that come to mind are xnview (I use this) which is
freeware and IrfanView which is free for non-profit.
http://www.xnview.com
http://www.irfanview.com/
When resizing, these tools allow for scaling to a percentage or a set width,
keeping proportion, etc. They can change image format, and even do some
simple image manipulations like blur, color shift, etc. And I find them to
be a lot faster than Fireworks or Photoshop. (Possibly at an expense of
absolute quality, but I haven't had a problem.)
The reason I didn't suggest a server-based image resizing method is because
you have one person uploading the images, they're doing it with ftp instead
of a web interface. If you were using a web interface, I would have
suggested maybe using a server-side conversion on upload that would save the
resized image to a static file and entered both into the database. A little
more load on the server, but not too bad. And if multiple, user-defined
sizes served up on demand was paramount even over server load and serving
time, then I'd say go with a display time dynamic rescaling option.
Sometimes a simple solution is best.
-Kevin
----- Original Message -----
From: "Bailey, Neal" <[EMAIL PROTECTED]>
To: "CF-Talk" <[EMAIL PROTECTED]>
Sent: Tuesday, November 25, 2003 3:56 PM
Subject: RE: Resize Image ?
>
> Good questions Kevin,
>
> Ok Here goes...
>
>
> Givens:
> 1. We have 8743 different images of users. All in .gif format.
> 2. I want to show the current image 174x205px, a little smaller without
> being jagged.
>
> Answers to questions:
>
> 1. Yes an associate edits and uploads about 40 images everyday.
> 2. The images are uploaded by FTP by the above person.
> 3. Yes page load is always a concern.
> 4. Server performance is a very high concern as this is running off of
huge
> database and is hosting about 40 websites not including the templates.
>
> I am thinking that my only option is to run a massive image resize batch.
>
> Now I have a new question... what's a good way to batch 8000+ images at
> once. Fireworks MX seems to get increasingly slower after it has batched a
> lot of images. I tried to batch 500 images with Fireworks and at around
> image 300 it was taking about 40 seconds to batch each image.
>
>
> - Neal Bailey
>
>
> -----Original Message-----
> From: Kevin Graeme [mailto:[EMAIL PROTECTED]
> Sent: Tuesday, November 25, 2003 2:58 PM
> To: CF-Talk
> Subject: Re: Resize Image ?
>
> Okay, let's back up.
>
> Givens:
> 1. You've got 5000+ "mug shots" ;-).
> 2. You want to show them at a large size and a small size.
>
> Questions:
> 1. Is the number of images ever going to change?
> 2. If so, who puts the new images on the site? Is it the webmaster with
ftp
> or is it system users through a web interface?
> 3. Are you concerned with the page load time for users?
> 4. How concerned are you about server load/performance?
>
> -Kevin
>
> ----- Original Message -----
> From: "Bailey, Neal" <[EMAIL PROTECTED]>
> To: "CF-Talk" <[EMAIL PROTECTED]>
> Sent: Tuesday, November 25, 2003 2:34 PM
> Subject: RE: Resize Image ?
>
> > Yeah this is what I'm looking for...
> >
> > ...Still looking...
> >
> > - Neal Bailey
> >
> >
> > -----Original Message-----
> > From: Tony Weeg [mailto:[EMAIL PROTECTED]
> > Sent: Tuesday, November 25, 2003 2:23 PM
> > To: CF-Talk
> > Subject: RE: Resize Image ?
> >
> > isnt there some java image manipulation technique you could use to
perform
> > this operation on the thumbnails?
> >
> > ...tony
> >
> > tony weeg
> > senior web applications architect
> > navtrak, inc.
> > www.navtrak.net
> > [EMAIL PROTECTED]
> > 410.548.2337
> >
> > -----Original Message-----
> > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
> > Sent: Tuesday, November 25, 2003 3:19 PM
> > To: CF-Talk
> > Subject: RE: Resize Image ?
> >
> > if you give them correct porportions they shouldnt heres a simple one i
> did
> > http://www.theholegang.com/ <http://www.theholegang.com/>
> <http://www.theholegang.com/> other than ppl
> > uploading diffent sized images
> > its ok well at least to me, but im blonde too
> >
> >
> > > Yes I know, this is what I am doing now... But it looses quality and
> > > becomes jagged. Not really noticeable on higher res monitors but
> > > unfortunate our users are on lower res systems and are complaining
> > > about the image quality.
> > >
> > > What I have is about 5000 mug shots of people that I am displaying on
> > > my page one at the normal size which looks fine and one as a thumbnail
> > > which looks crappy.
> > >
> > > I was hoping that there was some type of _javascript_ that would
> > > process the image on load before the web browser messed it up.
> > >
> > > - Neal Bailey
> > >
> > > -----Original Message-----
> > > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
> > > Sent: Tuesday, November 25, 2003 2:02 PM
> > > To: CF-Talk
> > > Subject: Re: Resize Image ?
> > >
> > > its simple, just make your image place holder the size u want the
> > > image to be, i do that instead of thumbnails all the time ;)
> > >
> > >
> > >
> > >> Hey guys,
> > >>
> > >> Is there a way to resize an image to be smaller with out it loosing
> > >> quality and becoming jagged? Meaning if I have an image that is
> > >> 120x120px and I want to resize it to 100x100px without loading two
> > >> different images. Does this make sense...
> > >>
> > >> I want to use just one image but I need to show it into two places
> > >> one being a little smaller.
> > >>
> > >> Thanks,
> > >> - Neal Bailey
> > >>
> > >>
> > >>
> > > _____
> > >
> > >
> > >
> >
> >
> > _____
> >
> >
> >
> _____
>
>
>
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