What is considered the best way to convert a multipage PDF into single page JPG's with photoshop CS3?
I'm looking for a (semi) automated process since it's a 150 page pdf so a little cumbersome to do manually.
I know you asked about Photoshop but... If you have a Mac this is very easy to do using Automator. You just need three actions:
You can even select the color model, format (12 available), resolution and compression quality. Just to test it out, I converted a PDF file I have here with 207 pages:
Using "600dpi/RGB/best quality possible" it took an hour to convert to JPEG.
Using "300dpi/RGB/60% quality" it took about 5 minutes to convert to JPEG.
(My laptop have a Core 2 Duo 2.26Ghz)
There doesn't seem to be a well working default solution available. But the solution is actually quite easy.
To do this, we will need to create our own photoshop action.
Stop recording the action.
Open up your multiple page PDF file (you select which pages to open; each page will open as its own image. Note: If you want 1 pdf, then select only 1 pdf. If you want all of them, then hold Shift and select the ones you want to open in Photoshop. This will open all the pdf pages as Photoshop files in the program.).
This should save all open files as JPGs and then close the files. (for better performance I would suggest doing 25-50 pages at a time instead of all 150)
I know you asked about Phosothop, but with ImageMagick:
$ convert output.pdf pages.jpg
Maybe in Acrobat you extract single pages (under Document→ Extract Pages, you can do all of them, or a range), and then use an Action in Photoshop to Open→ Save as JPG → close, and Batch all the files.
If you are on windows, you can do this with PDF-XChange Viewer (http://www.tracker-software.com/product/downloads).
File - Export - Export to Image...
Advantages over the other solutions: