100% Local Processing

Fill PDF Form — Offline & Private

Complete AcroForm fields directly in your browser. Your filled data never leaves your device — zero upload, total privacy.

100% Offline Processing

Fill PDF Forms Without Sending Your Data to Any Server

PDF forms often contain sensitive information — tax figures, medical details, legal declarations. Filling them in a browser-based tool that uploads to a server means your form data transits third-party infrastructure before you've even submitted the form. OfflinePDF reads the PDF's AcroForm field definitions using pdf-lib, presents them as interactive inputs, and writes your entries back into the document object in browser memory. The download happens locally. Your data goes nowhere it shouldn't.

📋 AcroForm Support
Detects and fills standard AcroForm text fields, checkboxes, radio buttons, and dropdown menus.
📝 Text Overlay for Any PDF
Even if the PDF doesn't have form fields, add text labels, values, and annotations at any position.
🔐 Form Data Stays Local
Tax returns, medical questionnaires, legal declarations — fill them with confidence that the data stays on your machine.
🆓 Free, No Account
No subscription, no per-document fee, no watermark on the filled form.

OfflinePDF vs Typical Online Tools

FeatureOfflinePDFTypical Online Tools
Uploads your form dataNeverAlways
AcroForm field supportYesVaries
Works without internetYesNo
No account requiredYesOften required
Data retained server-sideNeverOften yes

Frequently Asked Questions

The PDF needs to be unlocked first. Use the Lock/Unlock tool to remove the password, then fill it.

AcroForm checkboxes and select fields are detected and rendered as interactive controls.

Yes. Flattening bakes the filled values into the page content so they cannot be changed after download.