# Sign PDF: Arthize vs pdfFiller

_Updated July 2026 · Arthize · https://arthize.com/vs/pdffiller/sign-pdf_

To sign a PDF, Arthize offers a free, private sign pdf with no watermark — a focused alternative to pdfFiller. Signing a PDF lets you draw, type or add a digital signature and fill form fields, so you never print, sign and rescan a document again.

## Arthize's sign pdf vs pdfFiller

pdfFiller is an online form-filling and editing service. pdfFiller specialises in online form completion and e-signature on a subscription model.

**Arthize's approach:** Signing a PDF lets you draw, type or add a digital signature and fill form fields, so you never print, sign and rescan a document again.

- Transparent pricing: free forever, Pro from $6/mo or $48/yr, and a one-time $149 lifetime option.
- Files are processed inside your private Arthize workspace and deleted after the job — never sold or used to train models.
- 50+ tools live in one workspace, so you don't jump between single-purpose pages.
- Core tools without a mandatory subscription.

## How to sign a PDF with Arthize

A clear electronic signature is legally valid for everyday agreements in most countries.

Cryptographic digital signatures bind the signature to the document for higher assurance.

You can fill form fields and sign in the same tool without printing.

## How to sign a PDF with Arthize

1. **Open the sign tool** — Sign in and open the sign-and-fill tool.
2. **Create your signature** — Draw it, type it in a signature font, or use a digital certificate.
3. **Place it and fill the form** — Drop the signature where it belongs and fill any fields, dates or checkboxes.
4. **Download the signed PDF** — Save the signed document with no watermark.

## FAQ

### Is Arthize a good pdfFiller alternative to sign a PDF?

Yes. Signing a PDF lets you draw, type or add a digital signature and fill form fields, so you never print, sign and rescan a document again. Arthize does it free with no watermark and deletes the file after the job. pdfFiller is purpose-built and effective for heavy form-filling workflows.

### How do I sign a PDF online for free?

Signing a PDF lets you draw, type or add a digital signature and fill form fields, so you never print, sign and rescan a document again. On Arthize it's free with no watermark and processed privately.

### Is an electronic signature on a PDF legally valid?

Signing a PDF lets you draw, type or add a digital signature and fill form fields, so you never print, sign and rescan a document again. On Arthize it's free with no watermark and processed privately.