Repair PDF
Fix PDFs that other tools can't open — qpdf rebuilds the file structure and cleans up common corruption.
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Files are processed locally — nothing is ever uploaded.
How it works: your file is rebuilt locally with qpdf (WebAssembly) — the whole structure is rewritten and common corruption (misplaced data, broken streams, invalid bytes) is cleaned up. Nothing is uploaded; very badly damaged files may still be beyond repair.