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Repair PDF
Recover pages and rebuild corrupted xref structures from damaged PDFs locally. Działa na tym urządzeniu
Dodaj swoje pliki
Twoje dokumenty pozostają wyłącznie w aktywnej karcie przeglądarki.
Podgląd stron
Przygotowywanie lokalnego podglądu.
Podejrzyj pierwsze strony.
Choose a local file to begin.
Twoje dokumenty pozostają wyłącznie w aktywnej karcie przeglądarki.
Nie ma logowania, limitów wsadowych ani serwerowego magazynu plików.
Użyj przycisku czyszczenia, aby natychmiast zwolnić dane zadania.
Przewodnik
Jak używać 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.
Kroki
- 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.
Warto wiedzieć: If the object tree is too corrupted for vector cloning, PDFolio automatically attempts page-by-page visual rescue via PDF.js.
Najczęstsze pytania
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.