Yes, if you are the only user of those computers. If you have multiple computers used by more than one person in the same household, you can purchase a Family Pack license, which covers 5 computers in the same household.

What is the difference between PDFpen and PDFpenPro?

PDFpenPro has all the PDF editing features of PDFpen. PDFpenPro also has the ability to:
- convert websites to multi-page PDFs, complete with hyperlinks
- create cross-platform fillable PDF forms
- create and edit PDF document Table of Contents.

What if I don't have Mac OS X 10.6 or later?

For Mac OS X 10.4 and 10.5, please download PDFpen 4.7.1. For Mac OS X 10.2.5 - 10.3.9, please download PDFpen 2.4.3.

Can PDFpen do actual text editing: replace or change wording, change paragraph spacing, change font type, etc?

Yes. Select the text you want to modify, click the "Correct Text" button in the toolbar, and the selected text will be replaced by an editable text block.

I can't select the text in my document. Can I use OCR to convert it?

If you cannot select the text in your PDF, it may be a scanned document. In PDFpen 4.X and 5.X, you can perform OCR (Optical Character Recognition) on the document to convert the text into machine-readable characters. Choose Edit > OCR ... to start the process. After the OCR is done, you can select and edit the text as you would normally.
If OCR is not enabled hold down command and option keys to force it to be enabled for your document.
Note: OCR will not produce an exact rendering of the text. You will need to proofread and edit the results. Some scanned documents perform better than others. See our OCR tips.

I started typing some text using the Text tool, but it is too wide. I have resized my text box, but when I try to type in it after resizing, it reverts to its original size. How can I keep the new size?

Select the text box, and choose "Edit→Wrap Text" from the main menu. (Note: If you use the text box tool to drag out a text box, instead of just clicking to create a text box, Wrap Text is the default behavior.)

How do I reduce the size of my PDF file?

You can reduce the color depth and resolution of images and scanned pages by choosing Edit >Resample Image. Reducing a color scan to monochrome text will significantly reduce file size. For color images you can recompress them with a selective JPEG quality so they take less space but remain in color. See the PDFpen Help for more details under "Images, Signatures and Imprints" and "Scanning."

I want to password-protect a PDF document. Can I do that with PDFpen?

Yes. Choose File → Save (or File → Save as...) from the PDFpen menu. Check the box next to "Secure Document with Password" and enter your desired password in the field, then re-enter it in the Verify field, before saving the PDF.

How do I flatten a PDF so that the elements I've added in PDFpen are not editable?

Choose Print from the File menu, and then click Save as PDF. The resulting file will not be editable in most PDF viewers. It will still be editable in PDFpen 3.X / PDFpenPro 3.X and later versions, because these versions allow you to edit any images in a PDF file, including ones that have been added by PDFpen and PDFpenPro.

I launched PDFPen, but nothing happened. What's wrong?

Look for the PDFpen icon in the Dock. If you click you'll see that the upper-left text in the menu bar changes to "PDFpen". To proceed, select: "File >Open..." from the menu. PDFpen needs you to open a PDF file to begin. If you prefer to start from scratch select "File >New One Page Document".

Why is there a Smile logo on my PDF when I save it?

Documents saved by the PDFpen demo will be given this watermark. The only way to remove the watermark is to purchase a license to PDFpen and register the application.
When you open a watermarked document with a registered copy of PDFpen, the watermark will be removed automatically and you can simply save again to permanently remove it. Do not save watermarked documents using File→Print→PDF→Save as PDF... or the watermark will remain permanently as though you'd printed to a physical printer.

Why can't I print or modify my document in PDFPen?

Authors of PDF documents may set permissions separate from those in the operating system. These permissions govern the abilities to edit, save and print documents, and PDFpen respects these permissions. To edit you will need to contact the original author of the document and ask for a version without restrictions.

What should I do when one of my PDFs is crashing PDFPen?

The original document may be off-spec, or you may have uncovered a bug. Please try opening the original in PDFpen then do File→Print→PDF→Save as PDF... Open the newly-saved document and perform your edits. If that works, please consider sending us the original document so that we can analyze why and hopefully make PDFpen handle that more gracefully in a future release.

Why are my pages not rendering in order?

PDFpen draws thumbnail images of document pages in the background, and the most recently requested sequence of images (eg. where I've just scrolled to) is drawn first. If you have two processors you'll find that pages are frequently rendered out of order as PDFpen utilizes both of them to generate the thumbnails.

How do I get a tool to revert to the Select tool after each use?

By default, a tool will stay selected after each use.
To override this, double-click the tool. The Select tool will become active after each use of the Text tool. You can also uncheck the preference "Keep tools selected after use.

Which OCR engine does PDFpen use?

On Intel-based Macs, PDFpen uses the OmniPage OCR engine, version 15.5, from Nuance Communications, Inc. For more info on OmniPage, please choose Help → License Agreement from the menu or visit http://www.scansoft.com/omnipage/capturesdk/linux/ and note that not all features of the SDK are licensed for use in PDFpen.
On PowerPC-based Macs, PDFpen uses the Tesseract Open Source OCR Engine. For more info on Tesseract, please choose Help → License Agreement from the menu or visit http://code.google.com/p/tesseract-ocr/