Crea una Firma Transparente

Convierte un escaneo o una foto de tu firma manuscrita en un PNG transparente y limpio para contratos y documentos.

Firma una hoja en blanco, fotografíala o escanéala y suéltala aquí. La IA quita el fondo de papel y deja solo la tinta como un PNG transparente que puedes colocar en cualquier PDF o documento.

Como todo el proceso corre en tu navegador, tu firma — un dato sensible — nunca se sube a un servidor.

Por qué usarlo

Lista para documentos

Consigue tinta transparente que puedes colocar directamente en PDF, contratos y cartas.

Se queda en privado

Tu firma nunca sale de tu dispositivo — no se envía nada a ninguna parte.

Aislado limpio

Separa la tinta de la textura del papel y de las sombras, con un pincel para refinar el resultado.

Cómo funciona

Tres pasos, en tu propio navegador. Sin cuenta y sin subidas.

1. Añade tu imagen

Arrastra y suelta, busca o pega — también funciona por lotes.
2. La IA quita el fondo

Funciona en tu dispositivo en segundos — no se sube nada.
3. Descarga

PNG transparente, o elige un color de fondo. Calidad completa.

Turning a signed page into a usable signature

Sign on unlined white paper

The quality of a digital signature is set before you photograph it. Use a black or dark blue pen with a reasonably thick stroke on plain, unlined white paper — ruled or squared paper leaves lines that have to be cleaned up individually.

Sign larger than usual. A big signature photographed and scaled down looks crisp; a small one photographed and enlarged looks soft and pixellated, and the thin parts of the stroke break up.

Photograph it flat and evenly lit

Shoot from directly above with the camera parallel to the paper. Photographing at an angle skews the signature into a trapezoid, and the correction never looks quite right.

Even light matters more here than anywhere else, because a shadow across the page becomes a grey wash across the cut-out. Daylight from a window with the paper away from your own shadow is ideal; overhead room lighting with you leaning over the page is the usual cause of a muddy result.

What a clean signature file looks like

The result should be the ink alone on transparency, with no paper tone and no grey box, so it can be placed over any document background — including the coloured or watermarked pages many contracts use.

Check the thin strokes at full zoom. The delicate parts of a signature, where the pen lifted, are exactly what an over-aggressive cut-out removes, and a signature missing its tapering strokes looks visibly altered.

Keep the file private

A signature is one of the few images where the file itself is a security concern: anyone holding a clean transparent PNG of your signature can place it on any document.

That is a direct argument for processing it on your own device rather than uploading it to a service, and for being deliberate about where the finished file is stored and who it is sent to. Strip metadata before sharing, and avoid emailing the transparent master when a flattened copy inside the finished document would do.

Preguntas frecuentes

How do I get a clean digital signature?

Sign larger than usual with a dark, thick pen on plain unlined white paper, photograph it from directly above under even light, then remove the background. The result is the ink alone on transparency.

Is it safe to make a signature image online?

It depends entirely on whether the file is uploaded. Here the processing runs in your browser and the image never leaves your device, which matters more for a signature than for almost any other image.

What format should I save a signature in?

PNG, so the transparency is preserved and it can be placed over any document background. A JPG will arrive with a white box around it.

Why do the thin parts of my signature disappear?

The delicate strokes where the pen lifted are the first thing an over-aggressive cut-out removes. Sign with a thicker pen, photograph at higher resolution, and check the fine strokes at full zoom.

¿Listo para probarlo?

Es gratis, ilimitado y completamente privado.

Quita un fondo ahora

Exporta aquí y sigue editando allí — tu imagen te acompaña, sin volver a subirla.