Hi everyone, I'm having a slight problem with Acrobat.
I'm scanning in some paper material directly to Acrobat, and using Clearscan OCR. I'm doing the scans at 300dpi, in 1bpp. The resulting files are huge, which I had thought was the fact that each page was an image, but when I go to Advanced > PDF Optimizer > Audit Space Usage, on average, 88% of the file size is due to fonts. The resultant OCR is almost exclusively Times New Roman anyway, so I'm trying to eliminate the excess overhead, and slim my files down substantially.
However, when I look in the Fonts pane of the PDF Optimizer, it does not show any embedded fonts for me to un-embed. Is there any way I can get rid of this excess and get some much reduced files? I'm making these PDF's for the web, so every little byte I can trim off is better.
P.S. I had a look at the document properties, and there are hundreds of fonts with numerical names, and "Fd" in front of the numbers. All are Type 1 (CID), Encoded Identity-H. I can't delete them from this pane, and I can't find where to delete them... Help?
http://blogs.adobe.com/acrolaw/?p=97
Some salient points from his article:
--| ClearScan creates a custom font to match the character shape.
It does not rely on system fonts or any other font that may be installed on your system.
--| Can I turn a ClearScan file into a Searchable Image file?
No. This will trigger a "renderable text" error.
You could export it to TIFF, reassemble and then OCR or print it to an image file.
That a file containing OCR output is larger in size than the original file that contained only the scanned image is to be expected. After all, content has been added.
As the Blog article describes, the "Fd..." fonts are from ClearScan.
Something to try:
Extract a testing page from one of your PDF files.
With this "pagefile.pdf" open, open the Advanced Editing toolbar.
Select the TouchUp Text tool. Use it to select some text.
Now, right click to open the context menu and, at the bottom, select "Properties".
The TouchUp Properties dialog box opens with the "Text" tab opened.
Use the "Font:" drop-down to select a Font that is on your local machine.
Click "Close".
Now, click the mouse somewhere on the viewed PDF page.
You will see the change of Font to the selected text.
n.b., there are occassions where, instead of being able to have the TouchUp Text tool select text, an alert dialog appears to inform you:
TouchUp cannot create a text selection.
Be well...