Learn how to add page numbers to PDF files using free online tools or PC software. You can set position, font, etc., for page numbering.

Open any PDF file, and if Preview recognizes that it contains form elements, an AutoFill Form button appears in the upper-right corner of the PDF window.

To edit a PDF file on your Android for free, you can use the Adobe Acrobat Reader: Edit PDF app. While you can’t modify existing text or images with a free account, you can add new text ...

You can find free PDF editors on the internet, but their most important features tend to be behind a paywall. Here we recommend five free PDF editors.