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PDF & DocumentsRuns in your browserNew

PDF Form Filler

Complete PDF forms locally and download the result.

Use the PDF Form Filler tool

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What this pdf form filler does

PDF Form Filler reads the interactive fields that already exist inside a PDF and turns them into ordinary form controls. Text fields, checkboxes, radio groups and choice lists are supported, and you can flatten the finished document so the answers become part of the page.

Everything happens in the browser with pdf-lib. Signatures that need a digital certificate are not the same as typed names, so check whether the receiving organisation requires a certified signature.

Why use it

  • Complete an application without installing a desktop PDF editor.
  • Keep personal details on your own device instead of uploading them to a form-filling service.
  • Flatten a form so later readers cannot accidentally change the answers.

How to use it

  1. 1Select the PDF containing form fields.
  2. 2Fill in the generated controls; unsupported fields are listed rather than silently ignored.
  3. 3Choose whether to flatten the form.
  4. 4Download the completed copy and review every page.

Worked examples

Simple application

Input

A PDF with Name, Email and Agree checkbox

Output

The fields accept values and the downloaded copy shows the completed answers.

Flattened copy

Input

Flatten enabled

Output

Answers are drawn into the page and the interactive fields are removed.

Flattening is usually what a recipient wants if they ask for a “final” copy.

Common mistakes

  • Assuming a typed name is a valid legal signature; many organisations require a handwritten or certified signature.
  • Filling a scanned form that is an image with no form fields, which this tool cannot detect.
  • Flattening before checking the answers, then having to start again.

Frequently asked questions

Why are no fields shown?
The PDF may be a flat scan, or its form may use a format pdf-lib does not expose. Open it in a PDF viewer to see whether the fields are interactive.
Does flattening reduce quality?
No. The answers are drawn into the page. Text remains vector text where the field allows it.
Are my answers uploaded?
No. Field reading and writing happen in this browser tab.
Can I save and resume later?
Not in this tool. Keep the tab open while you work, or use a desktop PDF editor for multi-session workflows.

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