Extracting pages in pdf file

[aneegee]

I have a 693 page pdf file and need to extract every 3rd page.  Does anyone know how to accomplish this?

[Bernd Alheit]

Extract as separate files?

[aneegee]

Pages would be 3, 6, 9, 12 etc.  Then extracted into one file.

[Bernd Alheit]

Delete the unwanted pages and save the file with a new name.

[try67]

Do you mean pages 1, 4, 7, etc.?

What should be the names of the files when these pages are extracted?

[aneegee]

Pages would be 3, 6, 9, 12 etc.  Then extracted into one file.

[try67]

As mentioned, it would be easier to do it by deleting all the other pages, and then saving the file under a new name. You can do that using this code:

for (var i=this.numPages-1; i>=0; i--) {
	if (((i+1)%3)!=0) this.deletePages(i,i);
}
this.saveAs(this.path.replace(this.documentFileName, "ExtractedPages.pdf"));

You can run it from the JS Console, for example.