NullKit

Guide

Complete ordinary PDF forms without submitting their contents to a form-processing website.

Detect supported PDF form fields, fill them locally, and download either an editable form copy or a flattened copy for consistent display.

Clear answers

Complete ordinary PDF forms without submitting their contents to a form-processing website.

Detect supported PDF form fields, fill them locally, and download either an editable form copy or a flattened copy for consistent display.

01

Are entered values transmitted?

No. Field values remain in the current browser tab and are written into the downloaded copy locally.

  • Text, checkbox, choice, and radio fields
02

What does flattening do?

It bakes field appearances into page content so they display consistently but can no longer be edited as form controls.

  • Editable or flattened output
03

Does this add a legal signature?

No. Filling a form is not the same as applying a cryptographic or legally valid digital signature.

  • Local field-value handling

A local check

Complete ordinary PDF forms without submitting their contents to a form-processing website.

Detect supported PDF form fields, fill them locally, and download either an editable form copy or a flattened copy for consistent display.

01

Selected file

Choose a PDF containing supported form fields.

Choose a PDF containing supported form fields.

02

Review before sharing

Editable or flattened output

Complete the generated field controls.

03

Local verification

Choose editable or flattened output.

Choose editable or flattened output.

Review the completed document before submitting it elsewhere.

Four local steps

What does flattening do?

  1. 01

    Text, checkbox, choice, and radio fields

    Choose a PDF containing supported form fields.

  2. 02

    Editable or flattened output

    Complete the generated field controls.

  3. 03

    Local field-value handling

    Choose editable or flattened output.

  4. 04

    Text, checkbox, choice, and radio fields

    Review the completed document before submitting it elsewhere.

Browser privacy

Fill and Flatten PDF Forms

Text, checkbox, choice, and radio fields

No. Field values remain in the current browser tab and are written into the downloaded copy locally.

Editable or flattened output

It bakes field appearances into page content so they display consistently but can no longer be edited as form controls.

Local field-value handling

No. Filling a form is not the same as applying a cryptographic or legally valid digital signature.

Clear answers

Does this add a legal signature?

No. Filling a form is not the same as applying a cryptographic or legally valid digital signature.

Private workspace

Fill and Flatten PDF Forms

Complete ordinary PDF forms without submitting their contents to a form-processing website.

Fill and Flatten PDF Forms