Fill forms and add signatures without uploading. 100% local processing—your documents never leave your device.
PDF forms require filling fields and adding signatures—whether tax forms, applications, or contracts. Local tools let you complete and sign without sending sensitive documents to cloud servers.
Understanding PDF Form Fields
PDF forms contain different field types for data entry. Understanding these helps you fill forms correctly.
- Text Fields: Open fields for typing text or numbers.
- Checkboxes: Binary yes/no selections.
- Radio Buttons: Single-choice from multiple options.
- Dropdowns: Select from predefined lists.
- Signature Fields: Placeholders for digital signatures.
"Digital signatures on locally-processed documents provide equivalent legal weight to handwritten signatures in most jurisdictions."
Step-by-Step: Fill PDF Forms Locally
Follow these steps to fill PDF form fields without any cloud uploads.
- Open Editor: Navigate to pdflocally.com/tools and select form filler.
- Upload PDF: Drag and drop your form PDF.
- Identify Fields: Form fields are highlighted for easy identification.
- Fill Fields: Click each field and enter required information.
- Check Values: Verify all entries are correct.
- Save: Download your completed form.
// Form field filling workflow
const fillForm = async (pdfDoc, formData) => {
const form = pdfDoc.getForm();
for (const [fieldName, value] of Object.entries(formData)) {
const field = form.getField(fieldName);
if (field instanceof PDFLib.TextField) {
field.setText(value);
} else if (field instanceof PDFLib.CheckBox) {
field.check();
} else if (field instanceof PDFLib.Dropdown) {
field.select(value);
}
}
return pdfDoc.save();
};Form Field Types Comparison
| Field Type | Use Case | Input Method |
|---|---|---|
| Text Field | Names, dates, numbers | Type directly |
| Checkbox | Yes/No selections | Click to check |
| Radio Button | Single choice options | Select one option |
| Dropdown | Predefined lists | Select from list |
| Signature | Digital signatures | Draw or upload |
How to Add Digital Signatures
Digital signatures provide legal verification for completed forms.
- Locate Signature Field: Find the signature field in your form.
- Choose Method: Draw signature, upload image, or type name.
- Position: Place signature in the designated field.
- Apply: Confirm signature placement.
- Finalize: Save your signed form.
Frequently Asked Questions
Are digital signatures legally valid?
Yes, digital signatures are legally valid in most countries including the US (ESIGN Act) and EU (eIDAS). Check your local regulations.
Can I edit after signing?
Editing after signing invalidates the signature. Make all edits before adding your signature.
What signature formats work?
Most tools accept drawn signatures, uploaded signature images, or typed name signatures.
Can I sign on mobile?
Yes, most local form tools work on mobile browsers with touch support for drawing signatures.