eSign PDF
Add your electronic signature to PDF documents.
Add Signature
Draw your signature above
eSign PDF is a free online tool from Tool Hub Zone that lets you add your signature to a PDF document. Upload the file, place your signature where it belongs, and download the signed copy. It saves you from printing, signing by hand, and scanning again. It is part of our PDF tools, and no account is needed.
How to Sign a PDF Online
- Upload the PDF you need to sign.
- Create your signature using the options the tool offers.
- Place the signature on the correct page and line, and adjust its size.
- Download the signed PDF and open it to confirm the signature is in the right spot.
Electronic Signature vs. Digital Signature
These two terms are often mixed up, but they are not the same thing.
| Type | What it is | Typical use |
|---|---|---|
| Electronic signature | An image or mark of your signature placed on the document | Forms, letters, simple agreements |
| Digital signature | A certificate-based signature that locks the document and shows if it was changed | Official, legal, and regulated documents |
| Scanned handwritten signature | A photo of a signature made on paper | Informal documents |
This tool adds an electronic signature. It does not create a certificate-based digital signature.
Is an Electronic Signature Legally Valid?
In many countries, electronic signatures are accepted for everyday documents, but the rules differ by place and by document type. Some documents may need a witness, a notary, or a certified digital signature. Please check the rules in your country, or ask the person or office that requested the document, before you rely on an electronic signature for something important. This page is general information and not legal advice.
When eSign Is Usually Enough
- Job offer letters and employment forms
- School and university forms
- Consent forms and simple permission slips
- Service agreements and quotations between two parties
- Internal company approvals
When You Should Use Another Method
- Documents that must be notarized or witnessed
- Property transfers, wills, and similar legal papers
- Any file where the receiving office asks for a certified digital signature
How to Protect Your Signature
A signature image can be copied. Only add it to documents that you trust, and avoid sharing a signed PDF with people you do not know. Do not upload sensitive documents, such as IDs or bank papers, to any free online tool. Keep a copy of the unsigned original too, so you can sign a corrected version later.
What Happens After You Sign?
The signature becomes part of the page. After that, the file is a normal PDF that you can send by email. If you need to sign several files, you can combine them first with Merge PDF. If the signed file is too large to send, Compress PDF can make it smaller.
Tips for a Clean Signature
- Make your signature large enough to read, but not bigger than the signature line.
- Zoom into the finished page to check that it does not cover any printed text.
- If the document has several pages that need signing, place the signature on each one.
Frequently Asked Questions
Is eSign PDF free?
Yes. It is free to use, and you do not need to sign up.
Can I sign on my phone?
Yes. You can use it in a browser on a phone, tablet, or computer.
Can I remove or move the signature after I download the file?
Not easily. Keep an unsigned copy and sign again if you need to change anything.
Does it make the document secure?
No. It adds your signature to the page, but it does not lock the document or prove that nobody changed it later.
Last updated: October 11, 2026