Herramienta Gratuita
Tache permanentemente texto e imágenes sensibles en un PDF — las redacciones se integran en el archivo, sin cuenta.
Cómo funciona
Redacta tu PDF en tres pasos
- 1
Upload your PDF
Drag and drop your PDF onto the tool or click to browse. The file loads in your browser — never sent to any server.
- 2
Draw redaction boxes
Click and drag on any page to draw a black redaction box over the content you want to hide. You can add as many boxes as needed across all pages. Click a box to remove it.
- 3
Apply redactions and download
Click 'Apply redactions & download'. The black boxes are drawn directly into the PDF page content using pdf-lib and flattened permanently — they cannot be removed with a standard viewer.
Por qué usar Signvoy
Permanente, preciso, privado
Draw to redact — any content
Draw redaction boxes over any text, image, or area you want to hide. Works on text-based and scanned PDFs alike.
Permanently flattened
Redactions are drawn as solid black rectangles directly into the PDF page content using pdf-lib — they become part of the document and cannot be undone with a standard viewer.
Your content stays on your device
All processing is local. Your PDF and its sensitive content are never sent to any server — close the tab and everything is discarded.
¿Necesitas enviar un documento para que otros lo firmen?
Esta herramienta gratuita cubre el trabajo de documentos de un solo paso. La plataforma completa de Signvoy añade todo lo que una empresa necesita: enviar a múltiples firmantes, establecer un orden de firma, obtener un rastro de auditoría a prueba de manipulaciones, automatizar recordatorios y adjuntar un certificado de finalización a cada documento terminado.
- Firma por múltiples partes
- Rastro de auditoría a prueba de manipulaciones
- Certificado de finalización
- Plantillas de firma reutilizables
- Enrutamiento secuencial y paralelo
- Recordatorios automáticos
- API REST y webhooks
- Lógica de campos condicionales
Preguntas frecuentes
Preguntas comunes
- Are the redactions truly permanent?
- The black rectangles are drawn into the PDF page content using pdf-lib, which means they are embedded as standard PDF drawing operations. They cannot be removed in any standard PDF viewer. However, unlike professional redaction tools, the underlying text data may still exist in the PDF's text stream. For maximum security on highly sensitive documents, use a professional redaction tool that also strips the underlying text.
- Can I redact text on scanned PDFs?
- Yes — scanned PDFs contain images, and the black boxes are drawn over the page image. Since there is no embedded text, the redaction is as permanent as possible.
- Can I undo a redaction before downloading?
- Yes — before you click 'Apply redactions & download', click any black box on the page to remove it.
- Can I redact multiple pages?
- Yes — scroll through all pages and draw boxes on any page. All redactions across all pages are applied at once when you download.
¿Quieres saber más? Leer la guía completa: Cómo redactar un PDF permanentemente — gratis →
Deja de perseguir firmas
Únete a miles de equipos que usan Signvoy para cerrar acuerdos, incorporar clientes y firmar contratos, más rápido.
Sin tarjeta de crédito · Plan gratuito para siempre · 14 días de prueba Pro