How to Inspect PDF Form Fields
Select a PDF to list supported interactive AcroForm fields, including their internal names and field types. This is useful for document quality checks, form automation planning and identifying whether a PDF contains fillable controls before further processing.
Example
A registration form might report fields such as full_name — TextField, subscribe — CheckBox and country — Dropdown. These internal names can help when mapping data to a form workflow.
Factors That Affect the Result
The inspector depends on supported interactive form structures. A PDF can visually look like a form while containing only printed lines or scanned images, in which case no interactive fields are detected. Some advanced form technologies may also fall outside ordinary AcroForm support.
Frequently Asked Questions
Does this edit the PDF?
No. It is a read-only inspection tool.
Why does my form show zero fields?
The document may be flattened, scanned or built without supported interactive fields.
Can field names help with automation?
Yes. Internal names are often used to map values into fillable PDF workflows.
Technical Details and Limitations
Interactive PDF forms can contain text fields, checkboxes, radio buttons, lists, buttons and hidden fields. Field names, types and current values help diagnose a form, but JavaScript actions, validation logic and appearance streams may require deeper inspection.
Technical Details and Practical Limits
Interactive PDF forms can contain text fields, checkboxes, radio buttons, lists, buttons and hidden fields. Field names and current values help diagnose a form, but JavaScript actions, validation rules and appearance streams may require deeper inspection.