Docu StopDetect Forms
Detect form fields in PDF
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Up to 4.5 MB per requestIdentify form fields in PDF documents
Analyze PDF files to detect and identify all interactive form fields, including text inputs, checkboxes, radio buttons, dropdown menus, and signature fields. The tool returns a JSON report of all detected fields with their types and properties. Useful for auditing PDF forms, preparing documents for automation, or understanding a form structure before filling it programmatically.
Frequently asked questions
What types of form fields can this detect?
Text inputs, checkboxes, radio buttons, dropdown menus, signature fields, and other interactive PDF form elements.
What format is the output?
The results are returned as a JSON report listing each detected field with its type, name, and properties.
Can this help with automating PDF forms?
Yes — the JSON output can feed into automation scripts, helping you understand the form structure before programmatically filling it.
Is this tool free?
Yes, all Docu Stop web tools are completely free to use with no hidden charges or credit card required.
Are my files private and secure?
Absolutely. Files are processed over encrypted connections and automatically deleted from our servers after processing. We never access, store, or share your documents.
What is the file size limit?
Uploads are limited to approximately 4.5 MB per request due to server constraints. For larger files, download the Docu Stop mobile app which supports documents of any size.