.NET Core PDF Library - Create, Fill, and Flatten PDF Form Fields

High Performance

Performance of the PDF form filling and creation is high and accurate. For example, creates or fills 1000+ form fields in a second.

Supported PDF Form Fields

Supports all PDF form fields such as text box, check box, radio button, combo box, list box, and signature fields.

Read and Modify

Access to read and modify form field values and properties. Form fields can be moved around. It is also possible to delete form fields.

• Modify PDF form fields documentation

Fill Form Fields

Supports filling form fields, which includes text box field, checkbox, radio button, dropdown, and signatures fields.

• Fill PDF form fields documentation

Flatten Form Fields

Flattening PDF form fields will directly write the values on the page and remove the respective fields, thereby making the form non-editable.

• Flatten PDF form fields documentation

Customization

Syncfusion Essential PDF supports various customizations for the form fields depending on the form field type, including font, color, border style, highlight type, etc.

Import and Export Form Fields

Supports import and export of PDF form fields data via FDF, XFDF, JSON, and XML.

• Extract form fields data from PDF files documentation

PDF JavaScript Action

Extensive support for JavaScript action in PDF. It can be used for validating user input data, calculate form field values by using formula, etc.

• Add JavaScript action to PDF form field documentation

XFA

Support to create, fill, and flatten XFA form fields, including text box field, numeric field, date time field, combo box field, radio button, etc.

• Fill XFA form fields documentation