Sign PDF Online
Add a handwritten or typed signature to your PDF document. Place it on the page, adjust its position, and download a signed copy directly in your browser.
How to Sign a PDF Online
PDF files are widely used for forms, agreements, applications, business letters, and other documents that need to be shared in a consistent format. When a document requires a signature, printing it, signing it by hand, scanning it, and sending it back can take extra time. A browser-based PDF signing tool offers a simpler way to add a visible signature to a document without printing a new copy.
What Is an Online PDF Signature Tool?
An online PDF signature tool lets you place a signature mark on a PDF page. With this tool, you can draw a signature using a mouse, touchscreen, or stylus, or create a signature image from a typed name. After creating it, you choose where it should appear in the document. You can move the signature preview before exporting the updated PDF.
The tool is designed for visible signing tasks, such as adding a signature to a letter, a personal form, an internal approval copy, or a document that the recipient has agreed may be signed with a visual mark. It is not a replacement for every type of electronic or digital signature service.
How Does This Sign PDF Tool Work?
The process has three main stages. First, select a PDF from your device. The document is opened in the browser so you can preview its pages and move between them. Second, create a signature by drawing it or typing a name. Third, select the placement tool and click on the page where the signature should appear. The preview can be dragged to adjust its position. When everything looks right, download a new PDF copy.
You can sign only the page you selected or enable the option to apply the same relative signature position to every page. An optional date can also be placed beside the signature. Always inspect the exported file before sending it to another person.
Frequently Asked Questions
1. Is this PDF signature tool free to use?
The tool on this page is provided for browser-based signing without a per-document charge. Your browser and device still need enough memory to open and process the PDF.
2. Can I draw my signature with a phone or tablet?
Yes. The drawing area supports touch input, so you can use a finger or stylus on a compatible phone or tablet. A mouse or trackpad can be used on a computer.
3. Can I type my name instead of drawing?
Yes. Choose the Type name option, enter the name you want to display, and create a signature image. The appearance depends on the script font available in the browser and device.
4. Does this create a legally certified digital signature?
No. It adds a visible image of a signature to the PDF. It does not apply a cryptographic certificate, establish identity, create a trusted timestamp, or provide an audit trail. Legal and business requirements vary, so use an approved digital-signature provider when certificate-based signing or identity verification is required.
5. Can I place a signature on every page?
Yes. Enable the option to apply the same relative position to every page. If the pages have different dimensions, the signature is scaled proportionally to each page.
6. Can I move the signature after placing it?
Yes. Before downloading, drag the signature preview on the page to adjust its position. You can also choose another page and place the signature there again.
7. Are my PDF files uploaded to a server?
This page processes the selected document in your browser and its code does not send the PDF content to a Nawssai upload server. The page loads its PDF libraries from a content delivery network. Avoid signing sensitive files on shared or untrusted devices, and keep your original document in a safe location.
8. Why might a PDF fail to open or download?
A file may be damaged, encrypted, unusually large, or contain features that the browser library cannot process. Try an unlocked copy or export a fresh PDF from the application that created the document. Make sure your browser allows downloads and that you have enough available memory.
Visible Signatures and Digital Signatures: Know the Difference
A visible signature is an image or mark displayed on a PDF page. It can look like handwriting, but by itself it does not prove who placed it or whether the document was changed later. A certificate-based digital signature uses cryptographic technology to bind a signature to a document and can help a recipient validate the signer's certificate and detect certain later changes. These methods serve different purposes.
Before signing a contract, financial record, government form, or other important document, ask the recipient which signing method is accepted. Some organizations accept a visible signature image for routine workflows, while others require a verified electronic-signature process, a digital certificate, identity checks, or a specific platform.
Tips for a Clear, Professional Signature
- Use a simple signature with clear strokes and enough space around it.
- Preview the page at a readable size before placing the signature.
- Keep the signature inside the intended signature area and away from printed text.
- Check the page number before placing a signature on a multi-page document.
- Open the downloaded PDF and confirm that the signature appears in the right place.
- Keep an untouched copy of the original document for your records.
Privacy and Responsible Document Handling
PDF documents can contain personal, financial, educational, or business information. This tool is designed to process the selected file locally in the browser rather than uploading the document to a Nawssai file-storage service. The required JavaScript libraries are downloaded from their CDN addresses, but the PDF file itself is processed on the device. For confidential documents, use a trusted device, keep your browser up to date, and avoid public computers. Local browser processing does not replace your own security practices.
Final Thoughts
Adding a visible signature to a PDF can make everyday document workflows more convenient. This tool provides a straightforward way to draw or type a signature, position it on a selected page, optionally repeat it across the document, and save a new PDF copy. Review the completed file and confirm that a visible signature is acceptable for your particular purpose. For documents that require verified identity or certificate-based signing, choose a dedicated digital-signature service.