Sign PDF
Add your signature to a PDF for free: draw it with your finger or mouse, type it, or upload a photo, then place it anywhere. Works on phone and desktop, no sign-up, files stay on your device.
Type text (works with Thai and all languages), sign, tick boxes, cover up existing text · Files never leave your device
Files stay on your device. Nothing is uploaded.
How it works
- 1Choose the PDF you need to sign.
- 2Draw your signature with your finger or mouse, type your name, or upload a photo of your signature.
- 3Drag the signature into place, then tap Save PDF and download the signed file.
Frequently asked questions
Is this signature legally valid?
It’s a simple electronic signature. In Thailand, the Electronic Transactions Act recognizes this kind of signature, and it’s fine for many everyday documents. Some documents may require a certificate-based digital signature, and rules vary by country, so check with whoever receives the document.
Can I use a photo of my signature on paper?
Yes. Choose upload and the white background is removed automatically, so only the ink is placed on the page.
Can I sign a PDF on my phone?
Yes. It works in the browser on iPhone and Android: draw your signature with your finger and place it on the page. No app or account needed.
Is my signature stored anywhere?
No. Your signature only exists in your browser while this page is open and disappears when you close it. The PDF is never uploaded.
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