# PDF

The PDF plugin contains functions for operations on PDF files:

* *Add Watermark*: To load a single page PDF and superimpose that page onto one or more pages in the input document.
* *Change Protection*: To change the protection settings on a PDF document without modifying the document's contents.
* *Concatenate*: To concatenate a list of PDFs into a single document, in the order that they were specified.
* *Fill Form*: To take data from a Type and insert it into a PDF document's form fields.
* *Read PDF*: To read text, signatures and form data from a PDF document.
* *Sign*: To add a digital signature to a PDF document.
* *Split*: To extract each page from a PDF document and save them as new files.

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### Links <a href="#links" id="links"></a>

[PDF License](https://docs.linx.software/reference/plugins/pdf/license)