PDF Fix / Repair Corrupted
NEWRepair a damaged or corrupted PDF. Rebuilds cross-reference tables, preserves object streams, and linearizes for better recovery.
Drag your damaged PDF here or
All processing is done in-browser. Your file never leaves your device.
About corrupted PDFs
Many PDF viewers silently fix small errors. If a PDF opens but behaves oddly (missing pages, slow rendering, errors when editing), this tool attempts structural repair by re-writing cross-reference tables, preserving object streams, and linearizing the file. Severely damaged files may not be fully recoverable.
Repair Results
How to use PDF Fix / Repair Corrupted
- Upload the problematic PDF — even if it opens oddly in your viewer.
- Click Repair PDF to reconstruct cross-reference tables.
- Review the before/after file size comparison.
- Download the repaired PDF and test it in your desired application.
What is PDF Fix / Repair Corrupted?
Many PDF viewers silently fix small errors. If a PDF opens but behaves oddly — missing pages, slow rendering, errors when editing, or crashes in some readers — its internal structure may be damaged. This tool uses qpdf to reconstruct the cross-reference table, renumber objects, and linearize the file for streaming. It does not alter page content; it only fixes the structural 'scaffolding' that holds the PDF together.
Severely damaged files with corrupted content streams may not be fully recoverable. This tool fixes structure issues, not garbled pixel data.
FAQ
- What kinds of PDF damage can this fix?
- Broken cross-reference tables, duplicate object IDs, corrupted linearization data, and mild structural inconsistencies. It cannot fix corrupted image/pixel data inside content streams.
- Will the repaired file be larger?
- Often yes — reconstruction adds proper cross-reference entries and may decompress object streams, increasing file size slightly in exchange for stability.
- If this doesn't work, what else can I try?
- Try opening the PDF in a different viewer (Chrome, Acrobat, Foxit), or use a dedicated desktop repair tool for severely damaged files.
Related tools
- PDF Compress
- PDF Password Protect
- PDF Overlay / Stamp
- PDF Remove Metadata
- PDF Page Labels
- PDF Show Structure
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