Interactive PDFs use AcroForm fields — text boxes, checkboxes, radio buttons, dropdowns, and signature fields — to capture data. Before you submit a completed form, or when you inherit one to fill, it helps to see every field and its current value at a glance. This inspector reads the PDF in your browser and lists them, with no upload.
How it works
In the PDF format, each form field is a dictionary object that contains an /FT (field type) entry. The tool reads the file’s raw bytes, scans every indirect object, and for any object carrying /FT it extracts:
/FT— the field type:Tx(text),Btn(button),Ch(choice),Sig(signature)./Ff— flags that distinguish a checkbox from a radio group or push button./T— the field’s name, and/TU— its tooltip / alternate name./V— the current value, decoding both literal(...)and hexadecimal<...>PDF strings, including UTF-16 text with a byte-order mark.
The decoded fields are presented in a table of name, type, and value.
Example
A text field named applicant_name with a filled-in value renders as a row of applicant_name · Text · Jane Doe. A checkbox stores /On or /Off as its value, which the tool shows after stripping the leading slash.
Notes
This is a deliberately lightweight, dependency-free reader. It will not decompress object streams (/ObjStm) or decrypt password-protected PDFs, and it surfaces a clear note when a form is present but stored that way. For everyday form auditing — confirming the right values are set and spotting stale hidden fields — it works entirely offline on your own device.