A PDF action is similar to a web hyperlink, but it’s much more flexible. PSPDFKit for Web implements common actions as defined in Adobe’s PDF Reference (page 417ff).
|Action||PSPDFKit Class||Use Case|
||Go to a destination (page) in the current document.|
||Resolve a Uniform Resource Identifier (web link).|
||Send data to a Uniform Resource Locator.|
||Set fields to their default values.|
||Execute a script.|
A GoTo action can define a different
pageIndex in the same document. Clicking on it updates the scroll position to make the page visible, but it doesn’t update the zoom level.
A URI action contains a URI. When executing this annotation, PSPDFKit uses
window.open to create a new browser tab, which also clears the opener as a security measurement to avoid allowing the target page to have access to your PDF state:
let newWindow = window.open(action.uri, "_blank"); newWindow.opener = null;
var newWindow = window.open(action.uri, "_blank"); newWindow.opener = null;
WidgetAnnotation and form fields can also define an
additionalActions field, which is a dictionary of event name and action pairs. For more information about the additional actions of
FormFields, refer to the API documentation.
You can learn more about the security problems when using
_blank in this article from JitBit.
Please refer to an individual browser’s documentation for a list of supported URI protocols. The most used protocols (
mailto) are supported in all major browsers.