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How to use SignFit

Sign a PDF without uploading it

SignFit opens your PDF in the browser, lets you place a signature, text and checkmarks, then flattens and downloads it — all on your device. No upload, no account, nothing stored on a server.

Fill out forms

Drop in a form and type into it. SignFit detects existing PDF form fields and lets you place free text anywhere else the form needs it.

Three ways to sign

Draw with a mouse or finger, type your name in a signature font, or upload a PNG of your signature.

FAQ

Is it legally binding?

SignFit adds a visible signature and flattens your document. Whether a signature is legally binding depends on your jurisdiction and the agreement — SignFit doesn't provide certificate-based e-signatures.

Is it free?

Yes — signing and filling one document at a time is free. Pro (one-time) adds a signature library, reusable templates, and batch signing.

Does my file get uploaded?

Never. Turn off your network after the page loads and it still works.

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