Recover and reconstruct damaged, corrupted, or unreadable PDF files.
Repairing a corrupted PDF attempts to fix a file that won't open, displays errors, shows blank pages, or behaves unpredictably in PDF readers. Corruption can happen during download interruptions, file transfers, storage media errors, software crashes during save, or when files are improperly copied. PDFly's repair tool analyzes the PDF structure, reconstructs damaged headers, fixes broken cross-reference tables, and restores readable content — all processed in your browser.
Upload your corrupted PDF and the tool attempts to recover as much readable content as possible. The repaired file downloads as a new PDF that should open correctly in standard readers. The tool works by parsing the PDF's internal structure and rebuilding damaged components, which can recover text, images, and page layouts that were inaccessible in the corrupted version.
It's important to understand the limitations: repair tools work on structural corruption — broken headers, damaged cross-reference tables, and truncated files — but cannot recover content that was never written to the file. If a file was only partially downloaded, the repair may recover what exists but cannot create missing data. Files corrupted by malware, ransomware, or deliberate encryption cannot be repaired in the traditional sense. Password-protected PDFs that won't open may have correct passwords but damaged structure, which repair can sometimes fix. Always keep backups of important documents — prevention is better than recovery. If repair doesn't work, the file may be too severely damaged for automated recovery, and professional data recovery services may be needed for critical documents.
