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Scan to PDF
Enhance document photos with crisp black-and-white or color contrast into a PDF. Se ejecuta en este dispositivo
Añade tus archivos
Tu documento permanece únicamente en la pestaña abierta del navegador.
Vista previa de páginas
Preparando la vista previa local.
Consulta la vista previa de la primera página.
Choose a local file to begin.
Tu documento permanece únicamente en la pestaña abierta del navegador.
Sin inicio de sesión, sin límites por lotes, sin almacenamiento de archivos en servidores.
Usa el control de borrado para liberar los datos de la tarea de inmediato.
Guía
Cómo usar Scan to PDF
Convert camera photos or dark PDFs into crisp, shadow-free, high-contrast document PDFs.About scan to PDF
Convert camera photos or dark PDFs into crisp, shadow-free, high-contrast document PDFs. Turn phone photos of receipts, signed pages, whiteboard notes, or forms into clean office-grade scans.
Extreme perspective distortion from angled camera shots is not unwarped automatically; crop the image or shoot straight-on for best results.
How PDFolio helps you scan to PDF
PDFolio applies adaptive luminance thresholding and contrast stretching to every page or image on an HTML5 canvas, whitening paper backgrounds while sharpening dark ink strokes.
If you want to combine photos into a PDF without altering their lighting or contrast, use JPG to PDF.
Before you download
Use Magic Color when the document has colored stamps, highlights, or blue ink signatures you want to keep in color.
When the result is ready, download it immediately and open it in your usual PDF viewer to make a final check. You can then use Clear task data to release temporary file references from this browser tab. PDFolio does not create an account, cloud folder, or server-side document history.
A private way to scan to PDF
PDFolio handles the selected files in the active browser tab. A Web Worker on your device performs the PDF task so the interface can remain responsive; document bytes are not sent to a PDF processing server, upload queue, account database, or advertising platform.
Pasos
- Add camera photos (JPG/PNG) or an existing dark/shadowed PDF.
- Choose Crisp B&W Document (adaptive threshold), Magic Color (contrast boost), or Grayscale Deskew.
- Pick A4, Letter, or Match image size, then process and download.
Conviene saber: Crisp B&W Document mode removes uneven paper lighting and gray phone shadows so pages print cleanly without wasting toner.
Preguntas frecuentes
How do I remove gray background shadows from a phone photo of a document?
Select the Crisp B&W Document filter—it turns uneven gray paper backgrounds pure white while keeping text sharp.
Can I upload an existing PDF scan to clean it up?
Yes. Scan to PDF accepts both image files (JPG/PNG) and existing PDFs.
Does scan to PDF change my original file?
No. PDFolio creates a new file for download. Your source file remains unchanged on your device.