If you searched for “sign PDF online free”, here is the short answer: open the file in a browser-based signing tool, create a signature, place it on the signature line and download the signed copy. With the PDFNova Sign PDF tool, the whole job takes about a minute, needs no account and adds no watermark. The file is processed in your browser, so the document is not uploaded to a server.
This guide walks through the steps, explains the three ways to make a signature, and lists the checks worth doing before you send the signed file back.
What you need before you start
Very little. You need the PDF you want to sign and a phone, tablet or computer with a modern browser. A printer, a scanner and a pen are not needed.
- The final version of the document. Sign last. If the text may still change, wait until it is agreed.
- The password, if the PDF is locked. Password-protected PDFs ask for their password when you open them.
- A photo of your signature (optional). Only needed if you want your real pen signature on the page.
Sign PDF online free: the steps
- Open the tool. Go to the Sign PDF page on your phone or computer.
- Add your PDF. Choose the file from your device. It opens in the browser and stays on your device.
- Create your signature. Draw it with a finger, stylus or mouse, type your name, or upload a photo of your handwritten signature.
- Place it on the page. Go to the page with the signature line and position the signature where it belongs.
- Resize it. Make it fit the line. A signature that covers nearby text looks careless and can hide important words.
- Add the date if the form asks for one. The tool has an optional date you can place next to your signature.
- Download the signed PDF. The result saves directly to your device. Open it once to check every page before you send it.
If you mostly work on a mobile, the same steps apply, and our guide on how to sign a PDF on your phone without printing it covers the small-screen details such as zooming and drawing with a finger.
Draw, type or upload: which signature style to choose
All three methods produce a simple electronic signature. The right one depends on your device and on how formal the document is.
| Method | Best for | Keep in mind |
|---|---|---|
| Draw | Phones, tablets and touch screens | A mouse makes shaky lines. Try a few times until it looks natural. |
| Type | Quick approvals and internal documents | Looks clean but less personal than handwriting. |
| Upload a photo | Documents where you want your real pen signature | Sign on plain white paper with a dark pen and photograph it in good light. |
For a deeper look at each option, including how to photograph a pen signature so it looks sharp, read how to create an electronic signature by drawing, typing or using a photo.
What kind of signature is this?
It is important to be clear about this. The signature you add with PDFNova is a simple electronic signature: an image of your signature placed on the page. It is not a certificate-based digital signature, which uses a digital certificate to prove who signed and to show whether the file changed afterwards.
Simple electronic signatures are widely used for everyday paperwork such as offer letters, quotations, consent forms, rental paperwork and internal approvals. Some organisations and some document types need more, for example a certificate-based signature, a witness or a wet ink original. Rules differ by country and organisation, so if the document is important, ask the receiving party what they accept. This article is general information, not legal advice.
Is it safe to sign documents in a browser?
The main worry with upload-based signing sites is that your contract, with your name, address and signature, is sent to someone else’s server. PDFNova processes files in your browser, so your documents are not uploaded to a server. The signed file is created on your device and downloads straight to it.
A few habits still matter:
- Read the whole document before you sign, including the small print and any attached pages.
- Avoid signing on a shared or public computer. If you must, delete the downloaded file afterwards.
- Keep your own copy of everything you sign, with a clear file name.
- Send the signed copy only to the person or organisation that asked for it.
Before you send: a quick checklist
- The signature sits on the correct line and does not overlap printed text.
- Every place that needs a signature has one. Long contracts often have more than one.
- The date is right and in the format the other side expects.
- Other blanks, such as your name or address, are filled in. If the PDF has interactive fields, the Fill PDF Form tool lets you complete them before signing.
- The file opens properly and all pages are present.
- If the document is confidential, consider adding an open password with Protect PDF and sharing the password through a different channel.
Common problems and how to fix them
The signature looks too big or too small
Select it and resize it until it matches the height of the signature line. It should look the way a pen signature would look on the printed page.
The drawn signature looks shaky
Drawing with a mouse is hard. Switch to a phone or tablet and draw with your finger, or upload a photo of your pen signature instead.
The uploaded photo has a grey background
Retake the photo on clean white paper, in bright even light, with no shadow from your hand or phone.
The PDF asks for a password
Enter the password you were given. If you do not know it, ask the sender for it or for an unlocked copy.
Who uses online signing most
Freelancers sign and return contracts, proposals and non-disclosure agreements all week, often from a phone between jobs. If that is you, our PDF tips for freelancers on invoices, contracts and proposals show how signing fits with the rest of your paperwork. Students use it for admission and scholarship forms, employees for HR documents, and small business owners for quotations and delivery notes.
Frequently asked questions
Can I sign a PDF online without creating an account?
Yes. PDFNova needs no sign-up. You open the tool, add your file, sign it and download the result.
Will the signed PDF have a watermark?
No. PDFNova does not add a watermark to the signed document. The file you download contains your document and your signature only.
Is a signature drawn on a screen legally valid?
In many places simple electronic signatures are accepted for ordinary agreements, but the rules depend on the country, the type of document and the organisation receiving it. For anything important, confirm with the other party or a qualified adviser.
Can I add more than one signature to the same PDF?
You can place your signature wherever it is needed in the document. If a second person must sign, send them the signed file so they can add theirs in the same way on their own device.
When your document is final and you want to sign PDF online free of cost, open Sign PDF, add your signature and download the finished file. It works on any modern device, and your document stays with you.