How to create thumbnails from large images

[GK]

Hi all,

I wish to know , how i can create thumbnails automatically using
javascripts. It should reduce the size as well as pixel resolution
(ie, a 1 mb image of 1280 x 800 px can be reduced to 20kb of 200 X 200
px. Is this possible?

If yes, pls let me know.

Thanks in advance

 

[Helbrax]

Hi all,

I wish to know , how i can create thumbnails automatically using
javascripts. It should reduce the size as well as pixel resolution
(ie, a 1 mb image of 1280 x 800 px can be reduced to 20kb of 200 X 200
px. Is this possible?

If yes, pls let me know.

Thanks in advance

You can reduce the size that is displayed by the browser, but that
will not reduce the size of the file on the server. That means if you
have a 1mb 1280 x 800 image, you can display it to the user as a
200X200 image, but it will still be a 1mb file that you will have to
download.

If you want to truly reduce the filesize and dimensions, you have to
do it on the server side(code like PHP, perl, ruby, .net etc).

 

[The Natural Philosopher]

You can reduce the size that is displayed by the browser, but that
will not reduce the size of the file on the server. That means if you
have a 1mb 1280 x 800 image, you can display it to the user as a
200X200 image, but it will still be a 1mb file that you will have to
download.

If you want to truly reduce the filesize and dimensions, you have to
do it on the server side(code like PHP, perl, ruby, .net etc).

yes..or simply when you upload the pictures in the first place, make
thumbnails of them.

I managed to do on the fly conversions to thumbnails with PHP...if you
go that route repost te question in comp.lang.php and I will post the
code up.