Repair PDF
Recover corrupted or damaged PDF files — lenient parse + clean rebuild
Two recovery passes — a lenient parse first, then a deep page-by-page salvage if needed.
Repair report
Repair PDF — Complete Guide & Instructions
MakeCard Repair PDF rescues corrupted or damaged documents that refuse to open in normal readers. It runs two recovery passes — first a lenient parse that tolerates structural errors and re-serializes the file cleanly, then, if needed, a deep salvage that copies out every recoverable page into a brand-new document. A step-by-step repair report shows exactly what was recovered.
How to Use Repair PDF
- 1 Drop the broken file on "Select damaged PDF" or press "Choose PDF".
- 2 Click "Repair & Download" — the first pass attempts a tolerant parse of the whole file.
- 3 If that fails, the tool automatically moves to a page-by-page deep salvage.
- 4 Read the "Repair report" — each checkmark logs what the recovery pass accomplished.
- 5 The recovered document downloads as filename-repaired.pdf.
Key Features & Capabilities
- Two-stage recovery — lenient re-parse followed by deep page salvage.
- Rebuilds the file structure cleanly instead of patching broken bytes.
- Ignores encryption flags during parsing to reach the content underneath.
- Transparent repair report listing every recovery step taken.
- Salvages partial documents when only some pages remain intact.
- Downloads a freshly serialized copy that standard viewers can open.
Supported Formats & Specifications
| Parameter | Specification |
|---|---|
| Pass 1 | Lenient parse and clean re-serialization |
| Pass 2 | Deep recovery — salvages copyable pages into a new document |
| Report | Step-by-step log shown on screen |
| Output | filename-repaired.pdf |
| Limits | Severely damaged or strongly encrypted files may not recover |
Practical Everyday Use Cases
- Rescuing a PDF that reports file damage or fails to open entirely.
- Recovering a download that was interrupted partway.
- Opening an old document that crashes modern PDF readers.
- Salvaging pages from a corrupted scan batch or email attachment.
- Re-serializing a malformed PDF produced by buggy export software.
Pro Tips for Best Results
- Always keep the damaged original — repair writes a new file and never overwrites the source.
- If pass one succeeds, the rebuilt file usually fixes subtle corruption like broken cross-reference tables.
- A deep salvage keeps whatever pages remain readable; expect a smaller page count on badly damaged files.
- Follow up with Compress PDF or the Page Organizer if the recovered file needs cleanup afterward.
Common Problems & Solutions
The file may be too damaged or strongly encrypted to parse — try re-downloading or re-exporting the original if a source still exists.
Deep salvage keeps only the pages that were still readable; missing pages were beyond recovery in the file itself.
A repaired structure can expose content issues caused by the original corruption — check pages visually after recovery.
Privacy & Security
100% Client-Side Execution
Recovery runs entirely in your browser — the damaged file is parsed and rebuilt locally with no upload, no remote service and no logging.
Frequently Asked Questions
Everything you need to know about using Repair PDF
Drop it into this tool and press "Repair & Download" — a lenient parse runs first, and a page-by-page salvage follows automatically if needed.
Common causes are interrupted downloads, broken cross-reference tables, or malformed objects from buggy export software — all of which a clean re-serialization can often fix.
Usually yes — the deep salvage pass copies every page that is still readable into a fresh document, so intact content survives even when some pages are lost.
The parser ignores encryption flags where possible, but strongly protected files may still fail — remove the password first if you have it.
Yes — if the page data itself is destroyed or the file is truncated past the salvageable content, recovery is not possible; the tool reports honestly when that happens.
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