Is E-Signature free to use?

Yes. E-Signature is free in your browser with no sign-up. Free plan supports files up to 50 MB with fair-use limits. AstraPDF Plus removes caps and ads.

Is e-signature legally binding?

Electronic signatures are widely accepted for many business documents. Check local regulations for highly regulated industries.

Can I use this on mobile?

Yes. Open the tool in Safari, Chrome, or Firefox on any smartphone or tablet — no app required.

Do I need a paid account?

No. E-Signature works on the free plan. Plus is optional for unlimited processing and larger files.

E-Signature for PDF - Sign PDFs Online Free

Q: Is it safe to use E-Signature online?

Yes. AstraPDF processes files on your device. Your files are processed locally in your browser — nothing is uploaded to our servers. We cannot access your documents.

PLUS FEATURE

Unlock E-Signature

Premium feature for AstraPDF Plus members. Upgrade to sign unlimited PDFs.

✨ Includes:

Draw, type, or upload signatures
Unlimited documents
Priority support

Upgrade to Plus →← Back

🔒 Secure • Cancel anytime

Multiple signature styles

Draw with mouse or touch, type in script fonts, or upload an image signature.

Place anywhere on the page

Position and resize your signature on any page of the document.

Secure — files never uploaded

Your files are processed locally in your browser — nothing is uploaded to our servers.

How to sign a PDF online

Add an electronic signature in four steps.

1
Upload your PDF
Select the document to sign.
2
Create your signature
Draw, type, or upload your signature.
3
Place on the document
Drag the signature to the correct position and page.
4
Download signed PDF
Save the signed document to your device.

Everything you need to sign PDFs

E-sign documents privately without cloud-based signature services.

Start immediately — no fuss

Use E-Signature directly in your browser. No sign-up, no software install.

Works on any device

Desktop, tablet, or phone on Windows, Mac, Linux, iOS, and Android.

No watermarks on output

Download clean results on Free and Plus — no branding stamped on your files.

100% browser-based privacy

Your files are processed locally in your browser — nothing is uploaded to our servers.

Combine with other PDF tools

Chain tools together — merge, compress, convert, protect, and sign in one workflow.

Optional Premium upgrade

AstraPDF Plus removes file-size caps, fair-use limits, and ads — still 100% private in your browser.

When to e-sign a PDF

Contracts

Sign agreements and return them quickly.

Forms & applications

Complete PDF forms with a signature.

Protect after signing

Add a password to the signed file.

Merge signed pages

Combine with other PDFs.

E-Signature FAQs

Common questions about e-signature with AstraPDF.

Need more power?

Sign unlimited PDFs

AstraPDF Plus removes file-size caps, fair-use limits, and ads — still 100% private in your browser.

Get Premium

Related PDF tools

Protect PDF

Lock signed documents

Merge PDF

Combine signed PDFs

Add Watermark

Add a draft watermark

Compress PDF

Compress before signing

Need more power? See our pricing plans or browse all tools on the homepage.

Sign PDF Online — Free E-Signature