Image Compression

tcofran

tcofran

Expert Member
Joined
Jun 17, 2009
Messages
3,562
Reaction score
1,251
Location
Pretoria
Gday MyBB.

I have always been using AcdSee 2.43 (i know it's old, but its fast) to compress my images. i would normally compress +- 40mb down to about 5mb without losing quality (noticable). Are there any good software that you guys / girls use to compress images ? i mean really compress without losing quality. It must also be able to do bulk processing. basicaly just needs to view / compress. nothing fancy and must be fast.

your expert opinions will be appreciated. as always. (sorry about the small caps Humberto) :)
 
Been using Faststone Image Viewer for years
Tons of settings for batch processing
 
tcofran said:
i mean really compress without losing quality. It must also be able to do bulk processing. basicaly just needs to view / compress. nothing fancy and must be fast.
Click to expand...
\

If you intend to compress the images heavily*, then you should look at the JPEG2000 (often shortened to JPEG2K) image format. It is likely to be slower than plain old JPEG, but some implementations may be fast enough for your needs. (Acdsee appears to have built-in JPEG2k support, IrfanView has a plug-in).

*by "heavily compress" I mean a compression ratio of 20:1 or greater, 40MB down to 2MB. At such high compression ratios, JPEG starts to look a bit off, but JPEG2k still looks ok.
 
I don't understand what the program has to do with it. Either you use a lossy format or a lossless format and tweak the compression values. You can store it JPEG at 80 - 90% and it still performs well when uncompressed for litho print, with a substantial loss in filesize. What are you aiming to do with these images ultimately? If you're shooting pro or stock you'll retain the raw or save psd comps anyways so compression is moot.
 
murraybiscuit said:
I don't understand what the program has to do with it. Either you use a lossy format or a lossless format and tweak the compression values. You can store it JPEG at 80 - 90% and it still performs well when uncompressed for litho print <snip>
Click to expand...

The OP was a little vague, but I suspect that he is fine with lossy compression. If I had to guess, his intended application is something like a catalogue, rather than full quality archiving --- in which case the ease-of-use and performance of the program would be relevant.
 
HI there
As a new user of image processing,i got a free trial package from this image program.It supports to compress the image effectively.
You can take a look and have a try.But it is a little bit difficult for me.So i am looking for a cheap image compressing program.
Thanks for any suggestion.
 
ImageMagick is fairly powerful (and free) image manipulation software that can do compression.

http://www.imagemagick.org/script/index.php

It is driven from the command line, so it is a lot quicker for the batch conversion of a large directory than is the case for the GUI based software.
 
You must log in or register to reply here.
Back
Top
Sign up to the MyBroadband newsletter
X