Sign PDF

No. Every step — reading your PDF, rendering the page preview, drawing or typing your signature, and embedding it into the final document — happens entirely inside your browser using the pdf-lib and pdf.js JavaScript libraries. Nothing is sent to a server at any point, so you can sign contracts, agreements, or any sensitive document without that content ever leaving your device. The tool keeps working with no internet connection once the page has loaded.

Draw lets you sketch your actual signature freehand with a mouse, trackpad, or touchscreen, producing the most personal and authentic-looking result. Type lets you enter your name as text and pick from four style presets (Elegant Script, Classic Serif, Bold Signature, or Simple) — a fast option when you don't want to draw but still want something more distinctive than plain text. Upload lets you use a photo or scan of your actual handwritten signature (for example, signed on paper and photographed, or exported from another app), which the tool automatically places on a transparent background-compatible canvas ready to drop onto the page.

This tool visually places a signature image onto your PDF, similar to how most everyday e-signature tools work, but it does not implement the cryptographic signing, identity verification, or audit-trail features (like a digital certificate or signer authentication) that formal e-signature standards (such as eIDAS or the U.S. ESIGN Act framework used by services like DocuSign) require for certain legal contexts. For casual agreements, internal approvals, or forms where a visual signature is sufficient, this works well. For contracts requiring legally certified electronic signatures, consult with the relevant parties about whether a certified e-signature service is required.

Yes — before clicking Apply Signature, you can drag the signature anywhere on the page preview and use the size slider to make it larger or smaller. The signature only becomes a permanent part of the PDF once you apply it; until then, you're free to adjust its position and size as many times as you like, and switching between Draw, Type, and Upload at any point replaces the signature you're positioning.

Each pass through the tool applies your signature to a single chosen page. To sign multiple pages, apply and download the PDF after signing the first page, then re-upload that downloaded file and repeat the process for the next page — each pass builds on the previous result, so the earlier signature stays in place while you add another.

The drawing pad renders strokes at a fixed internal resolution and scales them to fit your screen, so drawing very quickly or with a low-precision input device (like a basic trackpad) can occasionally produce thinner or less smooth lines than a stylus or touchscreen would. For the cleanest result, draw at a deliberate, steady pace, and use the Clear button to redo a signature that came out looking rough — there's no limit on how many times you can retry.

The signature is rendered onto a transparent-background canvas for all three creation methods (draw, type, and upload), so only the ink strokes, typed text, or the signature shape itself are opaque — everything else lets the underlying page content show through once placed. This means you can position your signature over existing text or a signature line without covering it with an unwanted white or colored box.

Nothing is retained anywhere. Because signing happens entirely in your browser's memory with no server storage involved, closing the tab, refreshing the page, or navigating away immediately and permanently discards your uploaded PDF, your drawn or typed signature, and any signed result you haven't yet downloaded. Make sure to download your signed PDF before leaving the page.