Firmar un PDF online gratis
Dibuja tu firma con el mouse o el dedo y colócala en la esquina que elijas de la primera o última página de tu PDF. Sin registrarte, sin instalar nada, sin subir el documento a ningún servidor.
- 100% en tu navegador — tu documento y tu firma nunca se suben a ningún servidor.
- Sin registro ni cuenta — dibuja y descarga en segundos.
- Funciona igual de bien con mouse en escritorio que con el dedo en el móvil.
Drag your files here
.pdf · up to 19.1 MB
How to use it in 3 steps
- 1
Sube tu PDF
Arrastra o selecciona el PDF que quieres firmar.
- 2
Dibuja tu firma
Usa el mouse o el dedo para dibujar tu firma en el panel.
- 3
Elige posición y descarga
Selecciona página, esquina y tamaño, luego descarga tu PDF firmado.
How to sign a PDF without printing or scanning it
Signing a PDF by hand used to mean printing it, signing with a pen, and scanning it back in — slow, and it degrades document quality at every step. Drawing your signature directly onto the PDF skips all that: the document stays crisp and the whole process takes seconds.
It's the usual solution for signing simple contracts, authorizations, forms, and any document where a digitized handwritten signature is enough — not to be confused with a certified electronic signature with stronger legal validity, which requires a digital certificate.
With DocuMixa you draw your signature with a mouse or finger right in the browser, choose which corner of the first or last page to place it on and its size, and download the signed PDF instantly. No account, no software to install.
As with any signed document, review the result before sending it — confirm the signature looks clear and is well placed on the page.
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