Sign PDF
Draw or type your signature and add it to any PDF. Your signature is embedded locally — nothing is uploaded.
Choose PDF files
or drag and drop them here
How signing a PDF works — draw or type, entirely on your device
The Sign PDF tool puts your signature on a document in seconds using either of two methods. Draw mode gives you a canvas to sign with a mouse, finger, or stylus and captures smooth, high-resolution strokes, while Type mode renders your name in a flowing italic script. Whichever you choose, the mark is embedded into the PDF itself as a crisp dark image and placed automatically at the bottom right corner of the last page.
It covers the everyday signing backlog: tenancy addenda, freelancer agreements, invoices, purchase approvals, permission slips, HR acknowledgments, and vendor paperwork where mailing wet-ink pages is pure friction. Sign from a laptop trackpad or a phone screen, return the executed copy by email, and keep the matter moving. For routine agreements between parties who simply need your mark on the page, this replaces the print-sign-scan ritual entirely.
Two things are worth understanding about scope. First, the signature and document are merged locally in your browser, so contracts containing sensitive terms never leave your machine. Second, this is an electronic signature, meaning a visual representation of your assent, not a certificate-backed digital signature issued by a trust service; most everyday business dealings accept the former, while certain regulated filings demand the latter.
How to Sign a PDF Document Online
Add an electronic signature to a PDF document in seconds.
- 1
Upload Document
Select or drop your PDF contract or form into the signature tool.
- 2
Create Signature
Draw your signature on the canvas pad, type your name in cursive font, or upload a signature image.
- 3
Place and Download
Position and scale the signature on the required page, then click 'Save and Download'.
How to sign a PDF online, step by step
Load the document, create your signature by drawing or typing, and the tool embeds it into the last page for you.
- 1
Open the Sign PDF tool and load your document
Drop the PDF you need to sign into the upload area. The file name and size appear once it is loaded, and nothing is transmitted while you work.
- 2
Choose draw or type mode
Two toggle buttons select the signature method. Draw suits a natural handwritten mark on a touchscreen or with a mouse; Type is faster when you are on a desktop without a pen and still produces a presentable script signature.
- 3
Draw your signature on the canvas
Click or touch inside the white canvas and sign the way you would on paper; strokes render in dark ink as you go. If the attempt looks off, press Clear and try again as many times as you like before committing.
- 4
Or type your name instead
Switch to Type mode, enter your name, and a large italic script preview appears beneath the input so you can judge the look. Adjust spelling freely; the preview tracks your keystrokes instantly.
- 5
Know where the signature will land
Placement is automatic: the signature is inserted at the bottom right corner of the final page at a fixed width. If your document expects the mark beside a specific line rather than in the corner, arrange the last page accordingly before signing.
- 6
Sign and download
Press Sign & Download and the tool embeds your signature into the document, then saves it as Rupix_Signed followed by the original file name. Processing takes only a moment even on longer contracts.
- 7
Verify the result before sending
Open the downloaded copy and check the last page: the signature should sit cleanly in the corner and read clearly at normal zoom. Then email or upload the signed file wherever it needs to go.
100% Client-Side Privacy Guarantee
Unlike other online PDF converters, Rupix operates on a zero-upload architecture. All PDF processing occurs locally in your browser memory using WebAssembly. No document bytes are ever uploaded to any server.
Engine Specifications
Supported Input
Standard PDF (.pdf)
Signature Modes
Draw Canvas, Type Cursive, Upload PNG/JPG
Engine
HTML5 Canvas + pdf-lib EmbedPNG/EmbedJPG
Privacy
100% Local Browser Execution
Output
Signed Standard PDF (.pdf)
Device Compatibility
Desktop, iPad/Tablet stylus, Mobile touch
Why use Rupix Sign PDF?
Draw signature with mouse, stylus, or touch screen on smooth HTML5 canvas
Type digital signature with elegant cursive typography styles
Upload signature image (PNG, JPG) with transparent background support
Drag, resize, and position signature anywhere on any page
100% confidential — contracts and signatures never touch any server
Legally binding electronic signatures for contracts, NDA, and invoices
Frequently Asked Questions
Are electronic signatures legally valid?
Yes, electronic signatures created with Rupix comply with general e-signature legal frameworks (such as the US ESIGN Act, UETA, and EU eIDAS regulation for basic electronic signatures).
Is my signature or contract uploaded to the cloud?
No. Your PDF document and your signature drawing are merged locally in your browser memory using HTML5 Canvas and pdf-lib. Nothing is uploaded or stored remotely.
Can I sign multi-page documents?
Yes, you can navigate between pages and place signatures, dates, or initials on any page.
Can I save my drawn signature for future use?
Your signature remains active in your local browser session for signing multiple documents without re-drawing.
Is this a legally binding signature?
In most everyday contexts, yes. An electronic signature that shows clear intent to sign is recognized for ordinary contracts in many jurisdictions, including under United States federal e-signature law and comparable frameworks elsewhere. It is not, however, a certificate-based digital signature from a licensed trust provider, and some courts, notaries, and agencies require that stronger form. Confirm the recipient accepts a standard electronic signature.
Can I move or resize the signature after placing it?
No. The tool positions the signature automatically at the bottom right corner of the last page at a consistent width, scaled to the proportions of what you drew or typed. There is no drag or resize step, so if your document requires the mark in a particular spot, prepare the page layout before signing rather than adjusting afterward.
Will a signature drawn with a mouse look shaky?
Mouse signatures take a little practice but hold up fine. The canvas captures your strokes at twice the display resolution and embeds them as a PNG, so lines stay smooth and crisp in the final document rather than pixelated. If the first attempt looks wobbly, press Clear and redraw; switching to a touchscreen, stylus, or Type mode are reliable fallbacks.
Why is the sign button greyed out?
The button activates only when a signature exists. In Draw mode that means the canvas has received at least one stroke, and pressing Clear resets it until you sign again. In Type mode, the input must contain at least one character. If the button stays disabled after drawing, switch modes and back, or reload the page and recreate your signature.