Sign PDF Online Free Online

How it works

Signatures never upload to SortMyFile.

1

Create signature

Draw with signature_pad or type a name as script.

2

Stamp

pdf-lib embeds the PNG on the chosen page. Download the signed file.

When you’d use this

Draw or type a signature and stamp it on a PDF (single-party, not e-sign) — A portal rejects the file shape and you must fix it without desktop Acrobat. You inherited a messy packet from a scanner or email thread and need a clean file before a form upload.

FAQ

About sign pdf online free

Is this legally binding e-sign?

No — it is a self-applied image stamp, not DocuSign-class e-sign.

Need only a PNG?

Use Signature Generator.

What file size works best with Sign PDF Online?

Aim under ~50–100 MB depending on device RAM. Very large scans may stall older phones. (Sign PDF Online.)

Does Sign PDF Online keep my original?

Yes — download a new file and keep the source on disk as backup.

Can I use Sign PDF Online offline after first load?

After the app shell and libraries are cached by your browser, many PDF tools keep working offline for that session.

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Sign PDF Online

How it works

Create signature

Stamp

When you’d use this

FAQ

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