How do I sign pdf online?

Upload your file to the Sign PDF tool, adjust the options if needed, and click the action button. Your new PDF is ready to download in seconds — no signup required.

Is the Sign PDF tool free?

Yes. Sign PDF on Pdfly is 100% free with no watermarks. There are no daily limits for reasonable use, and we never require an account.

Are my files safe when using Sign PDF?

Your privacy is our priority. Files are processed over an encrypted connection and are automatically deleted from our servers within one hour. Many tools run entirely in your browser, so your file never leaves your device.

Which devices does Sign PDF work on?

Sign PDF works on any modern browser — Chrome, Safari, Firefox, Edge and Brave — on Windows, macOS, Linux, iOS and Android.

Do I need to install any software to use Sign PDF?

No. Sign PDF runs entirely online. Nothing to install, no plugins, no signup — just open Pdfly and go.

Security & Forms

Sign PDF

Draw, type or upload your signature and eSign PDFs.

Free forever, no signup
Runs in your browser — private by design
Works on every device and browser

Drop your PDF to sign it

Draw, type or upload your signature — then drag it onto any page.

100% private, in-browser No signup

Why use Pdfly's Sign PDF?

Built with the same craft as a native app — in a browser tab.

Lightning fast

Runs in your browser using WebAssembly — no waiting rooms.

Private & secure

Files never leave your device for most operations.

No signup

Use every tool anonymously with zero data collection.

Beautifully simple

A distraction-free workspace built for focus.

How to sign pdf in 3 steps

Simple, fast, and totally free.

1Step 1
Upload your file
Drag and drop into the Sign PDF dropzone above, or click to browse from your device.
2Step 2
Adjust the options
Reorder, choose ranges, quality or formats depending on the tool. Sensible defaults are set for you.
3Step 3
Download in seconds
Click the primary action button. Your new file is ready to download instantly.

Sign PDF — FAQ

Answers to the questions people ask most about Sign PDF.

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