How to display an image when you don't know the size ?

[Chris Leonard]

Can someone offer some help please.

I have written a guestbook for my site which allows the user to upload
images of themselves. I've restricted the upload to only 50K so I'm not
expecting many large files. My problem comes when I display the image on the
page, if it's a small image then no problem it will fit into the table
cell - but, somepeople have uploaded larger images.

How can I display a large image in a table cell when I don't know the size.
OK, I can always set an image size but if the uploaded image is small then
if you resize it large it look poor.

Any ideas please ?

TIA.

Chris

 

[Michael Wilcox]

Any ideas please ?

Do you have access to PHP? This can be done pretty easily with some basic
PHP functions.

 

[Nico Schuyt]

http://www.imagemagick.org/

How is the quality of resized images compared with GD?
Is it difficult to install Imagemagic on a Windows-server? (If my host
allows it)
Regards, Nico

 

[David Dorward]

How is the quality of resized images compared with GD?

I couldn't say - I've never used GD.

Is it difficult to install Imagemagic on a Windows-server?

Again, I can't say. I don't even use Windows for workstations these days. I
do know that its possible to get it running under Windows though.

 

[nice.guy.nige]

Can someone offer some help please.

I have written a guestbook for my site which allows the user to upload
images of themselves. I've restricted the upload to only 50K so I'm
not expecting many large files. My problem comes when I display the
image on the page, if it's a small image then no problem it will fit
into the table
cell - but, somepeople have uploaded larger images.

How can I display a large image in a table cell when I don't know the
size. OK, I can always set an image size but if the uploaded image is
small then if you resize it large it look poor.

If you are using PHP as a server-side language you can use the following;

<?php
$size = getimagesize ("myimage.jpg");
echo "<img src=\"myimage.jpg\" {$size[3]}>";
?>

getimagesize() returns an array, where element [3] is the "width=n height=n"
string which you can easily output in your <img> tag as shown in the above
example.

Hope that helps,
Nige

--
Nigel Moss.

Email address is not valid. (e-mail address removed). Take the dog out!
http://www.nigenet.org.uk | Boycott E$$O!! http://www.stopesso.com
"How strange the change from major to minor..."

 

[Nico Schuyt]

I couldn't say - I've never used GD.
Again, I can't say. I don't even use Windows for workstations these
days. I do know that its possible to get it running under Windows
though.

It can be done indeed: http://www.imagemagick.org/www/windows.html
Seems rather complex (to me however.
Thanks anyway.
Nico

 

[Chris Leonard]

Thanks to everyone.

My host has ASPJpeg installed so I'm looking at this method. I'd rather use
the php example but php is not available to me - is there an ASP alternative
do you know ?

Chris

 

[Adrienne]

Thanks to everyone.

My host has ASPJpeg installed so I'm looking at this method. I'd rather
use the php example but php is not available to me - is there an ASP
alternative do you know ?

Chris

That's what ASPJpeg does - resize images.
http://www.aspupload.com/aspjpeg.html

 

[Dave Saville]

Can someone offer some help please.

I have written a guestbook for my site which allows the user to upload
images of themselves. I've restricted the upload to only 50K so I'm not
expecting many large files. My problem comes when I display the image on the
page, if it's a small image then no problem it will fit into the table
cell - but, somepeople have uploaded larger images.

I have a site that people can upload pics to and automatically produce
an index. The approach I took was that the cgi upload dumps the
pictures into a directory called bigpics. It then runs a program called
PMView, which is a damn good image viewer and its latest incarnation
has a batch mode. I set it up to take bigpics/<uploaded image> and
produce smallpics/<uploaded image.gif> that is 200 pixels wide. I then
build the index page with the smallpics image as a link to the original
bigpics image.

PMView understands just about any image format on the planet and can
convert between them so bigpics is a mixture but smallpics are all
gifs. http://www.pmview.com/

Regards

Dave Saville

NB switch saville for nospam in address

 

[David Dorward]

It can be done indeed: http://www.imagemagick.org/www/windows.html
Seems rather complex (to me however.

Switch to UNIX, its much more user friendly then Microsoft's offerings

 

[Chris Leonard]

Switch to UNIX, its much more user friendly then Microsoft's offerings I've head UNIX called many things before but user friendly are you barking
mad ??

Notepad vs Vi

Vi wins hands down on functionality but on user friendliness ....... ummm 1
nill Microsoft

 

[Toby A Inkster]

Notepad vs Vi

Vi wins hands down on functionality but on user friendliness ....... ummm 1
nill Microsoft

Notepad vs. Nedit <http://www.nedit.org/>

Nedit wins hands down in both categories.

 

[David Dorward]

I've head UNIX called many things before but user friendly are you barking
mad ??

Notepad vs Vi

Ah ha - so you are comparing a "very simple text editor" to "a very
powerful, programmable editor for programmers"?

Try Notpad Vs Nano

 

[nice.guy.nige]

Ah ha - so you are comparing a "very simple text editor" to "a very
powerful, programmable editor for programmers"?

Try Notpad Vs Nano

Or Vi, or Notepad Vs Emacs / Xemacs. Especially Xemacs -- a powerful text
editor that comes complete with games and a (admittedly f**king awful) web
browser??

Cheers,
Nige

--
Nigel Moss.

Email address is not valid. (e-mail address removed). Take the dog out!
http://www.nigenet.org.uk | Boycott E$$O!! http://www.stopesso.com
"How strange the change from major to minor..."