Add Signature

Add personal hand-drawn signatures to your PDF.

Drag and drop files here

Supports all standard PDF files, please select 1 file to process

Processed securely via cloud conversion engine. Temporary files are destroyed immediately to protect your privacy.

How to sign a PDF with a realistic handwritten signature?

  1. Step 1: Load the contract to be signed

    Drag the file that needs signing into the system and find the specific page.

  2. Step 2: Write freely on the drawing board

    Use your mouse or mobile touch screen to write your name on the finely-tuned 'pressure-sensitive signature pad' on the right.

  3. Step 3: Stamp and generate

    Drag the generated signature to the right spot, adjust size and color, and solidify the signature into the contract's bottom layer with one click to export.

Why is this signature tool flawless?

  • Perfectly simulated fountain pen resistance

    The algorithm applies smooth interpolation specifically for mouse swipes and finger touches. Signatures are no longer stiff jagged lines, but smooth, rounded authentic writing.

  • Transparent background, perfect blending

    Automatically removes the drawing board background. Even if placed over dense text, the signature perfectly reveals the underlying content as if signed with a real pen.

  • Write once, save forever

    Happy with your signature? Combine it with our 'ID & Asset Vault' feature to solidify your perfect signature in your local browser for easy drag-and-drop reuse next time.

Electronic Signature FAQ

Q: Does this online handwritten signature have legal validity?

In many daily agreements, internal corporate workflows, and consent forms, this visual electronic signature with your personal distinct handwriting characteristics is generally recognized. However, strictly regulated financial contracts might require cryptographic signatures with digital certificates (CA).

Q: My writing with a mouse looks terrible. Can I open this page on my phone and sign with my finger?

Highly recommended! This tool was designed with mobile experience in mind. You can send the link to your phone's browser and sign directly on the screen with your finger for excellent results!

Q: Can the signature I placed be copied and stolen by others?

Once you click 'Add Signature' and export, the system merges and solidifies the signature image with the PDF's underlying page stream, making it extremely difficult for ordinary people to extract and copy. For maximum security, we recommend placing the signature slightly overlapping the bottom text to act as an anti-counterfeiting cross-page seal.