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Sign a PDF Online

Upload a PDF, choose the signature tool, then draw your signature, type your name or upload an image of it. Click where it should go, resize it, and save the signed PDF. Flattening (on by default) makes the signature part of the page so it cannot be moved.

Before you start

Where your file is processed
Processing runs in your browser. The finished file is then uploaded to PDFYork so you can download it. Stored copies are set to be deleted about 30 minutes after processing.
Account
Not required. Without an account you can run 3 tasks per day across all tools. A free account raises the limit.
Cost
Premium tool. Free accounts get 3 premium tasks per day. After that, each task uses 100 credits, deducted when you download the result.

How limits and credits work Β· How we handle files

How to Use

  1. Upload the PDF

    Drop the document you need to sign. It opens in the built-in viewer.

  2. Create your signature

    Click the signature (pen) tool and draw, type or upload your signature.

  3. Place it

    Click the spot on the page where the signature belongs, then resize or move it as needed.

  4. Save

    Keep "Flatten signature" ticked to make it permanent, then click Save Signed PDF and download.

Electronic signature vs digital signature

This tool adds an electronic signature: an image or typed mark of your signature placed on the page. That is what most everyday paperwork needs, such as rental forms, consent letters and delivery notes.

It does not add a certificate-based digital signature, the kind that cryptographically proves who signed and shows whether the document changed afterwards. If a contract, tender or government form specifically requires a digital certificate, use a dedicated signing service.

Why flatten the signature

Without flattening, the signature stays as an editable annotation that someone could move or delete in another PDF editor. Flattening merges it into the page content, which is the safer default for signed documents.

Where processing happens

You place the signature in your browser. When you save, the finished PDF is uploaded to PDFYork so it can be downloaded and counted against your daily allowance; server copies are set to be removed about 30 minutes after processing.

Need to fill in form fields as well? Use Form Filler first, then sign.

Use Cases

Rental and HR forms

Sign a tenancy application or onboarding form without printing and scanning.

School consent letters

Sign permission slips received as PDF and send them back by email.

Invoices and delivery notes

Add a signature to confirm receipt of goods or approve an invoice.

Troubleshooting

The signature looks blurry

Upload a higher-resolution image of your signature on a white background, or draw it larger and scale it down.

The signature can still be moved in another app

Make sure "Flatten signature" was ticked before saving.

The document needs a certificate signature

This tool creates visual electronic signatures only. Use a certificate-based signing service for those documents.

Frequently Asked Questions

Is a signature added with Sign PDF legally valid?

Many countries accept simple electronic signatures for everyday agreements, but requirements vary by country and document type. Check with the recipient when in doubt.

Can I type my signature instead of drawing it?

Yes. You can draw, type or upload an image of your signature.

Is my document uploaded?

You sign in your browser. When you save, the finished PDF is uploaded to PDFYork for download and kept temporarily.

Is Sign PDF free?

It is a premium tool: free accounts get 3 premium tasks per day, then 100 credits per signed document at download.