Sign PDF Online
Create your signature by drawing, typing, or uploading an image. Place it anywhere on your PDF. Your document never leaves your browser.
Drop a PDF to sign
or click to browse · Max 100.0 MB
Frequently Asked Questions
Are electronic signatures created here legally valid?+
Electronic signatures created with PDF Tools are valid for most personal and business documents in many jurisdictions. For contracts requiring qualified digital signatures (eIDAS QES), consult a certified signing service.
Is it safe to sign PDFs online?+
Yes. Your PDF is processed entirely in your browser — it is never uploaded to any server. Your signed document and signature data stay on your device, making this the most private way to sign a PDF online.
Can I sign a PDF on my phone?+
Yes. The signature tool is fully responsive and works on mobile devices. You can draw your signature with your finger or stylus directly on the screen.
Can I add multiple signatures to one PDF?+
Yes. You can create multiple signatures, initials, dates, and text elements, and place them on any page of your document. Each element can be resized and repositioned.
How it works
1
Upload your document
Drop the PDF you need to sign. It stays in your browser's memory — never sent to a server.
2
Create your signature
Draw, type, or upload your signature. Position and resize it anywhere on the page.
3
Download signed PDF
Save the signed document. Your signature and file remain 100% private.