Repair Corrupted PDF

Most PDFs people call "corrupted" aren't missing data - they're structurally malformed: a damaged or missing cross-reference table, a truncated trailer, or a non-standard object layout left behind by a browser, scanner or buggy tool. That's exactly what this fixes, by re-parsing the file as leniently as possible and rebuilding a clean, well-formed structure around whatever content it can find.

No, and no tool can. If bytes are actually gone - a truncated download that cut off in the middle, a drive failure, a file that was only partially transferred - that content cannot be reconstructed from nothing. What this can do is recover everything that's still genuinely present, and clearly report if some pages couldn't be recovered rather than silently producing a broken or incomplete file.

This first tries a full structural repair: rebuilding the file's cross-reference table and trailer while keeping every page's actual text and vector content untouched. That works whenever the file's logical content is intact underneath the damage. If the structure is too damaged for that to succeed, this falls back to rendering each page as a high-quality image and assembling those into a new PDF - which opens and prints fine, but its text is no longer selectable, copyable or searchable. The result tells you plainly which of the two happened.

If every page could be recovered, that's stated directly. If the fallback image-based recovery couldn't render one or more pages even with a deliberately lenient renderer, those exact page numbers are listed - nothing is dropped silently. The one thing that can't always be known is a page the file's own internal page count no longer references at all, since a severely damaged page tree can itself be part of what's unrecoverable.

No. Reading, repairing and rebuilding the file all happen locally in your browser - it's never uploaded anywhere.