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Repair PDF
Recover pages and rebuild corrupted xref structures from damaged PDFs locally. 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 Repair PDF
Parse damaged or non-standard PDFs in tolerant mode and rebuild a clean, standards-compliant PDF container.About repair PDF
Parse damaged or non-standard PDFs in tolerant mode and rebuild a clean, standards-compliant PDF container. Fix PDFs with broken xref tables, malformed scanner exports, or legacy documents that trigger errors in strict corporate portals.
A file that is completely zeroed out, encrypted with an unknown password, or truncated before any page objects exist cannot be recovered.
How PDFolio helps you repair PDF
PDFolio first attempts tolerant structural parsing with pdf-lib and rebuilds every valid page into a fresh object stream table. If structural parsing fails, it falls back to PDF.js stream recovery to rescue readable pages.
If a file will not open because it requires a password you know, use Unlock PDF instead.
Before you download
Always review all pages in the repaired output to verify no content was truncated in the damaged source file.
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 repair 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 the PDF file that fails to open properly in strict viewers.
- Click Process to run structural recovery and visual fallback reconstruction.
- Download the repaired PDF and inspect its pages.
Conviene saber: If the object tree is too corrupted for vector cloning, PDFolio automatically attempts page-by-page visual rescue via PDF.js.
Preguntas frecuentes
How can a browser repair a corrupted PDF without uploading it?
PDFolio runs two distinct PDF parsers in WebAssembly/JavaScript that rebuild broken cross-reference tables and page trees directly in memory.
Can Repair PDF fix a password-protected file?
No. Encrypted files must be unlocked with their password in Unlock PDF first.
Does repair PDF change my original file?
No. PDFolio creates a new file for download. Your source file remains unchanged on your device.