must prepare huge batch of B & W images to JPG help please

J
Posted By
jeannineruprecht
Jun 2, 2004
Views
329
Replies
9
Status
Closed
I have approx. 5000 images that are black and white that I am preparing for a website, currently it is taking me up to 6 steps per image

This is what I must do:
1. Save as grayscale
2. Size ratio 1
3. Save as RGB mode
4. Re-Size
5. Clean up image (not always)
6. Save as a JPG

Can I do this in a batch?

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MM
Mac_McDougald
Jun 2, 2004
Couple of notes…
Desaturate will do same as grayscale, generally.
Or if you do grayscale, you can go directly to JPEG from that, no need to go back to RGB. Either way saves a step.
I don’t get "size ratio 1".

2 variables:

– "Clean up image" is the main bugaboo, otherwise you can just record an action and play it back on whole folder of images. I assume by this you mean cloning out imperfections?

– Also the resize could be prob if images are all different. Or it might not be a prob, if all images are same orientation and will be same pixel dimension on at least one of the same sides.

At any rate, even if you can’t do all of this with one action, you can certainly do most of it, and save time. Although if need to run two differnt actions, the first one shouldn’t save as JPEG, need to avoid two different JPEG saves if possible.

M
JB
Jonathan_Balza
Jun 2, 2004
One thing to add to what Mac said. He said:

"Also the resize could be prob if images are all different. Or it might not be a prob, if all images are same orientation and will be same pixel dimension on at least one of the same sides."

Well, the "Fit Image" command (File-Automate-Fit Image) should help with that. You can use that instead of Image-Size and then just use a maximum size for the image, and PS will resize your image to fit that limit proportionately.
J
jeannineruprecht
Jun 2, 2004
you wrote:
if you do grayscale, you can go directly to JPEG from that,

If I do that… my images show up as solid black after I import them to the site, that is why I change the mode to RGB after grayscale.
???

I need learn more about actions.
JB
Jonathan_Balza
Jun 2, 2004
If you use Save for Web, you can do that right from Greyscale, no problem.

Personally, however, I wouldn’t convert to a Greyscale mode. I would either desaturate it or use Channel Mixer (which probably wouldn’t work for you).
MM
Mac_McDougald
Jun 2, 2004
Very strange…mine don’t, never have, currently PS7.

Well, as workaround you could use Save For Web.
I suppose that is actionable also?

M
JB
Jonathan_Balza
Jun 2, 2004
"I suppose that is actionable also?"

Yes, but it’s a pain in the butt. It seems like you can never really tell where it will output it to if you use SFW. (Or maybe I just can’t understand what that’s trying to do.)
MM
Mac_McDougald
Jun 2, 2004
If you use Save for Web, you can do that right from Greyscale, no problem.

I can just do Save As JPEG from grayscale, and I get a grayscale JPEG. Never had any probs viewing with other apps, browsers, etc.

M
JB
Jonathan_Balza
Jun 2, 2004
I haven’t either, but I’ve heard of some cases… I can’t remember what programs, however. It does appear that Jeannine is having problems, though… she said, "my images show up as solid black after I import them to the site, that is why I change the mode to RGB after grayscale." Granted, there’s not a lot of info there, but if RGB works for her… <shrugs shoulders>

The reason I say that you can do a "Save for Web right from Greyscale no problem" is that SFW converts the image to RGB, even if it’s in greyscale mode. I would imagine that this (along with all the rest of the special stuff SFW does) will make a more compatable image.
L
LenHewitt
Jun 3, 2004
Jean,

For B&W, it is often as well to save as GIF/256 colours. This will reproduce the B&W losslessly, and often as a smaller file size than JPG – JPG compression is not very efficient with monochrome images.

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