Free PDF tool

Inspect fillable PDF form fields

Drop a PDF with form fields — we list every AcroForm field with its name, type, current value, and required/read-only flags. Export as JSON or CSV.

Privacy first. Your files never leave your browser — nothing is uploaded to our servers.

Drop a PDF here or click to upload

Files never leave your browser.

Use cases

What do you need?

Audit existing forms

Check that every required field is mapped before sending the form to clients.

Map fields to your DB

Pull the field names you need to feed when filling forms programmatically.

Export submitted data

Pull values from a filled-in PDF straight into a CSV for spreadsheet processing.

Reverse-engineer forms

Inherited a PDF form with no docs? See exactly what fields it expects.

Beyond the free tool

What we can do for you

This tool patches PDFs after the fact. TemplateFox generates them right the first time — from your data, on demand, at scale.

Generate fresh PDFs from templates

Design once in our editor, fill with JSON, get a perfect PDF every time — no patching, splitting, or rotating needed.

Automate via API or no-code

One REST call, native Zapier / Make / n8n / Bubble nodes, or our MCP server for AI agents. Generate PDFs from any workflow.

Built for scale and reliability

Invoices, receipts, certificates, reports — generate thousands per day with consistent layout, fonts, and metadata.

Try the API free → Browse templates

Frequently asked questions

What's an AcroForm?

AcroForm is the standard PDF form format — text inputs, checkboxes, radio groups, dropdowns. Most fillable PDFs use it. (XFA forms are not supported.)

Are my files uploaded?

No. The PDF is parsed in your browser via pdf-lib. Nothing leaves your device.

Can I edit the values?

This tool is read-only. To fill a PDF form programmatically, use TemplateFox's API or generate a new PDF from a template instead.

Why does my PDF show no fields?

Either the PDF has no AcroForm fields (just a flat layout), or it's an XFA form (rendered by Adobe but not standard PDF). Try opening it in Adobe Acrobat to confirm.

What if I want to generate filled PDFs at scale?

TemplateFox lets you design a PDF template once and fill it from JSON — far cleaner than maintaining AcroForm fields. See our API docs.

Can I export the field list?

Yes. Use the JSON or CSV export buttons after the table loads — handy for handing the schema off to a developer or importing into a spreadsheet.

No-code automation

Do you need automation?

Stop editing PDFs by hand. Connect TemplateFox to Zapier, Make, n8n, Airtable or Bubble and generate PDFs from any workflow.

More free PDF tools

All run client-side — your files stay in your browser