Insights, tutorials, and updates from the Foxit PDF SDK engineering team.
A PDF Signature can be used to create and sign digital signatures on PDF documents, which protects the security of documents’ contents and avoids it from being tampered with maliciously. It can let the receiver ensure that the document is released by the signer and the contents of the document are complete and unchanged. Foxit PDF SDK provides APIs to create a digital signature, verify the validity of the signature, delete existing digital signatures, get and set properties of a digital signature, display a signature and customize the appearance of the signature form fields.
Foxit PDF SDK provides a range of encryption and decryption functions to meet different levels of document security protection. Users can use regular password encryption and certificate-driven encryption, or use their own security handler for custom security implementation.
Foxit PDF SDK provides a range of encryption and decryption functions to meet different levels of document security protection. Users can use regular password encryption and certificate-driven encryption, or use their own security handler for custom security implementation. Example: How to encrypt a PDF file with password import com.foxit.sdk.PDFException; import com.foxit.sdk.PDFViewCtrl; import com.foxit.sdk.common.Constants; import com.foxit.sdk.pdf.PDFDoc; [...]
Foxit PDF SDK provides APIs to view and edit form fields programmatically. Find out more here.
Form (AcroForm) is a collection of fields for gathering information interactively from the user. Foxit PDF SDK provides APIs to view and edit form fields programmatically. Form fields are commonly used in PDF documents to gather data. The Form class offers functions to retrieve form fields or form controls, import/export form data and other features, [...]
Foxit PDF SDK provides APIs to set rendering options/flags. Click here to find out more on how to render with Foxit PDF SDK for iOS.
PDF rendering is done with the Foxit renderer, a graphic engine that is used to render pages to a bitmap or a platform device. Foxit PDF SDK provides APIs to set rendering options/flags. For example, to set a flag to decide whether to render form fields and a signature, whether to draw anti-aliasing images and [...]
If you do not want to use the ready-made UI framework, you can redesign it through modifying the source code of the UI Extensions Component. There is one thing to take note of. The source code of the UI Extensions Component is written in Objective-C, so you need to use Objective-C to modify the UI [...]
If you do not want to use the ready-made UI framework, you can redesign it through modifying the source code of the UI Extensions Component. To customize the UI implementation, you need to follow these steps: First, add the following files into your app. They are all found in the “libs” folder. uiextensions_src project – [...]
Through a configuration file, developers can easily choose the features module, set the rights management and the properties of UI elements without needing to write any additional code or redesign the app’s UI. That helps users easily transfer their UI to a newer upgrade version of the Foxit PDF SDK. Introduction to JSON file The [...]