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Fill Out Form N-400 Online

Complete the paper version of USCIS Form N-400, Application for Naturalization, in your browser. Type every answer, download, then print and sign.

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About Fill Out Form N-400 Online

Five years of history in one form

The N-400 asks for your residence, employment, and travel history — often for the past five years — plus a long series of yes/no questions. Tables of dates and addresses are painful to write by hand. RevivePDF lets you type them neatly and fix mistakes without starting over.

When to use the paper N-400

USCIS lets most applicants file the N-400 online, but you may need the paper form if you're requesting a fee waiver, filing from certain locations, or working with an attorney who prefers paper. For those cases, RevivePDF fills the official PDF without Adobe.

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Fill forms in English, اردو, العربية, Кириллица, Ελληνικά, देवनागरी, and עברית, then export a completed PDF with the text embedded, ready to share, print, or archive.

Secure PDF Processing

Filling and export happen in your browser, and we never sell or share your document content — suited to tax forms, medical documents, and legal paperwork.

How to Fill Out Your PDF in 3 Steps

No software to install. Upload, let AI detect the fields, fill, and download.

Upload Your PDF

Drag and drop any PDF — scanned documents, locked forms, or image-based files, including multi-page documents.

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Computer vision scans the document and automatically identifies checkboxes, text input areas, and signature fields.

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Fill checkboxes, type in text fields, add signatures, and download the completed PDF ready to print or send.

Frequently Asked Questions

Can I sign the N-400 in RevivePDF?

No. Print the completed form and sign it by hand. USCIS requires handwritten signatures on paper-filed forms.

Can I fill the travel history table?

Yes. Each cell in the table is a field you can type into, so dates and destinations line up cleanly.

Is the online N-400 better?

For many applicants, filing online is simpler. Use RevivePDF when you need the paper form.