To introduce malicious code in documents.Ī Javascript API was developed for PDF viewers to be able to interpret Javascript code.For example, to validate entered form field values. For example, to hide part of document before printing or pre-fill some form fields when document is opened. To change document contents in response to some events.Javascript in PDF is most often used for the following tasks: One of such features is the ability to use Javascript in PDF documents. PDF has set of features for creating documents that could change their contents in response to reader actions. We are all accustomed to the text and images in PDF documents, but this is only a subset of what the format offers. Portable Document Format is also has many rarely used features. Most probably, there are enough features in them that you never used. You can think of features of Microsoft Word or your favorite IDE, for example. Sometimes latter set can be significant in size. This article is about this functionality.Īny software contains not only an actively used set of features but also a share of rarely used features. Meanwhile, the somewhat opposite functionality - executing Javascript in PDF documents - is available for quite a long time already. It shouldn't take long for Javascript to be able to render PDF documents.
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