Sign PDF · 3 min read

How to Sign a PDF Online Free — No Adobe Needed

You don't need Adobe Acrobat or a paid e-signature service to sign a PDF. Here's how to add a legally valid electronic signature to any PDF document in your browser — for free.

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Step 1 — Open the PDF Sign Tool

Go to pdfeditor.onl/sign-pdf. No account or subscription is required. The tool works on all devices.

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Step 2 — Upload Your PDF

Click the upload area or drag your PDF onto the page. The document is loaded into your browser's memory only — it is never transmitted to a server.

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Step 3 — Draw Your Signature

On the signature canvas, draw your signature using your mouse, trackpad, or finger on a touchscreen. The canvas supports variable pen pressure for a natural-looking result. You can clear and redraw as many times as needed.

Tip: On a phone or tablet, use a stylus or your fingertip. Slow, deliberate strokes produce cleaner signatures than fast swipes.

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Step 4 — Place the Signature on the Page

After drawing, select which page to sign. Your signature will appear as a draggable element — position it exactly where required on the document. You can resize it freely.

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Step 5 — Download the Signed PDF

Click Download Signed PDF. Your signature is permanently embedded into the PDF page as a vector element — sharp at any zoom level and tamper-resistant.

Sign PDF Now — Free →

Frequently Asked Questions

Is an electronic signature on a PDF legally valid?

In most countries, yes. Electronic signatures are legally recognised under eIDAS in the EU, the ESIGN Act in the US, and equivalent laws in many other jurisdictions. For standard contracts, NDAs, rental agreements, and consent forms, a drawn e-signature is fully accepted.

Where is my signature stored after signing?

Nowhere. Your signature exists only in your browser's temporary memory during the session and is permanently destroyed when you close the tab. No data is collected or stored by pdfeditor.onl.

Can I sign a PDF on iPhone or Android?

Yes. The signature canvas works with finger-drawing on iOS and Android in Safari, Chrome, and Firefox.

Can I add signatures to multiple pages?

Yes. After placing your first signature, select a different page and add more. Multiple signatures can be placed across as many pages as needed.

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