JPEG Image compression help (Transferring image from digicam to PC)

[Kniwor]

The problem is that when I connect my camera to PC and copy the images in memory stick to the comp, the image will usually take 2-3Mb of space if it's a 7Megapixel image. Now this is because the JPEG compression in camera is not done well, anyhow, to fix this what I can do is open the image in MS Paint and press [ctrl+S], this will make Paint save the image on my computer, but will compress it and save it in jpeg format, the image remains the same, so does the format, just that paint will do a better compression and the resulting size now is 800-900kb for the same image, same quality. Here is where the problem starts, it is kinda tedious to do this with every image, and was wondering if someone could help me out with how to automate the process.

[entrana]

try here
http://www.freedownloadscenter.com/B...ress-jpeg.html

[The Unknown]

use a thing like GIMP or Adobe Photoshop (windows only).

BTW, if you save them as .bmp the size will increase more.

[QwertyManiac]

What you're looking for is a batch conversion software. Most gallery or soft-editing programs like Adobe Photoshop Album do it, so do a few viewers like Irfan Viewer.

In Irfan, select the lot of files and choose "Start batch dialog" from the File menu.

Check Lifehacker, they got good guides for automating almost anything.

Under Linux's ImageMagick its the easiest thing:

morgify -format jpg *.bmp

P.s. MS Paint will drastically reduce the quality of the file cause it uses the extreme compression settings all the time without a prompt. Set proper JPG compression settings and compress always. Available in almost every other viewer/editor except this one.

[ranjan2001]

Originally Posted by Kniwor

Now this is because the JPEG compression in camera is not done well, anyhow,

Dont know which camera u have but all cameras have compression settings, so set it as per ur requirement, if u need small images for posting on web why shoot at full res?

XnView & irfanview both are freeware & can do the job of image resizing in batch mode.

[ThinkFree]

Go for IrfanView

[dsuresh]

i have image at 600MB which was taken by Nasa satelite. DONOT compress if u compress u will lose the quality of image ...

[iMav]

a sony full hd 1080 image takes around 800kb where as my couz ka sony take 4 mb for a simple max settings image which is better his or mine

[vish786]

Originally Posted by iMav

a sony full hd 1080 image takes around 800kb where as my couz ka sony take 4 mb for a simple max settings image which is better his or mine

I believe the one with more mega pixel & reso... its gives good quality pics.

[Kniwor]

Guys, not all compression is bad, large image size can be a result of high quality image, or bad compression. I would sacrifice a tiny bit for huge reduction in size. (though through lossless compression no data is lost, but I'm talking about lossy compression techniques).

[=CrAzYG33K=]

If you could do well in MS paint .. it'd work wonders with Photoshop CS3 ..
Try it in Photoshop!

I guess all images can be compresed in one go ..
Probably it's called batch image processing ?

[..:: Free Radical ::..]

Why don't you make a macro for saving through mspaint?

btw, mspaint doesn't uses optimal compression settings and does not retain all the details (only 80% quality i.e. optimized for 56.6kbps connection). You can easily see artifacts if you zoom sufficiently and compare with the original snap. Best way would be through photoshop or gimp.
Along with that , there is a freeware tool called StripFile which removes redundant color info and useless metadata from jpegs and gifs.
Use that after you finalize your image. Can reduce size significantly without causing any loss in image quality.