Free Online PDF Signature Tool

Sign PDF Online

Add your signature to PDF documents online. Draw, type or upload a signature, place it on the required page and download your signed PDF.

Upload • Sign • Position • Download

Sign your PDF
Everything runs in your browser.
Private
Choose a PDF file
or drag and drop it here
PDF only • Maximum 50 MB
Your signature
Step 2
Draw your signature here
Your Signature
Signature placement
Step 3
220 px
Privacy: PDF and signature processing is performed locally in your browser. Your files are not uploaded by this page.

PDF Preview

Drag the signature on the page to position it.
No PDF
Your PDF preview will appear here
Upload a PDF to start signing.
Signature preview
Page 0 of 0
Choose a signature, click Add Signature to Page, then drag it to the desired position. You can add a signature to more than one page.

Draw or Type Your Signature

Create a signature by drawing it, typing your name or uploading an existing signature image.

Place It Precisely

Select the PDF page, add the signature and drag it to the exact location you need.

Browser-Based Processing

The signing workflow runs in your browser, helping keep the source PDF and signature on your device.

How to Sign a PDF Online

Add a signature to your PDF in a few simple steps.

1

Upload Your PDF

Choose the PDF document you want to sign and wait for its preview to load.

2

Create & Place Signature

Draw, type or upload your signature, add it to a page and position it with the mouse or touch.

3

Download Signed PDF

Download a new PDF containing the signature placements you added.

Sign PDF Documents Online

InstaVibes Sign PDF is an online tool for adding a visible electronic signature to PDF documents. You can upload a PDF, create a signature by drawing or typing, upload a signature image, place it on the required page and save a new signed PDF.

What Can You Do With the PDF Signer?

The tool supports common signing workflows such as signing forms, letters, applications, agreements and other documents that require a visible signature. You can select a page, position the signature and add more than one signature placement when required.

Is the PDF Uploaded to a Server?

This page is designed for browser-based processing. The PDF is read by your browser and the signed file is generated on your device. As with any browser-based service, the security of your device and browser remains important.

Important: This tool adds a visible signature appearance to the PDF. It does not create a certificate-based cryptographic digital signature, signer certificate or legally verified identity.

Frequently Asked Questions

Common questions about signing PDF files online.

Yes. InstaVibes provides this browser-based PDF signing workflow without requiring the PDF to be uploaded to the page's server.

Yes. Select Draw and use your mouse, trackpad or touchscreen to create your signature.

Yes. Select Type, enter your name and choose a signature style before adding it to the PDF.

No. The tool creates a visible electronic signature appearance. It does not create a certificate-based cryptographic digital signature or independently verify the signer's identity.