Drop a file here
About Repair PDF — Free Online Tool
Repair PDF reopens a damaged document in a tolerant mode and writes it out again with a freshly built cross-reference table.
The cross-reference table is the index telling a reader where every object lives, and it is what an interrupted download or a half-finished save usually ruins; reopening the file while skipping objects that will not parse, then saving it, rebuilds that index around whatever is still readable. Two caveats come with that. Unreadable objects are left out rather than reconstructed, so content that was genuinely corrupt comes back missing instead of fixed, and the gap is silent. And if the library cannot load the file at all, nothing is produced — deliberately, because a half-recovered PDF is worse than an obvious failure.
The rebuild runs on your machine, so a file you cannot open yourself is not uploaded to a stranger to be examined.
Recovering a PDF that arrived truncated over a flaky connection, opening a file a reader rejects as malformed, salvaging a document off failing storage, and getting a broken file into a state the other tools here can read.
Also known as: fix corrupted pdf · recover damaged pdf · repair broken pdf · unreadable pdf fix
When to use it
Salvages a document truncated by an interrupted download, or one a reader refuses to open, and gets it into a state the other tools here can read.
How it works
The file is opened with the parser told to skip objects it cannot read and to ignore encryption, and the save rewrites the index from the objects that survived.
What Comes Back Missing
Unreadable objects are left out, not reconstructed, so genuinely corrupt content returns absent rather than fixed — and the gap is silent. A file with no %PDF header in its first kilobyte is refused outright, as is one the parser cannot load at all, because a half-recovered PDF is worse than an obvious failure.
How to Use Repair PDF in 4 Easy Steps
Follow this simple guide to process your files in seconds directly inside your browser tab.
Select or Drop Your PDF
Drag and drop your PDF directly into the Repair PDF workspace above or click 'Choose files'. You can process up to 1 file in a single run.
Configure Your Preferences
Adjust the available optimization sliders, target formats, or custom options. Salvages a document truncated by an interrupted download, or one a reader refuses to open, and gets it into a state the other tools here can read.
Instant In-Browser Execution
The client-side engine executes Repair PDF locally on your device hardware with zero server latency and 100% private in-memory sandboxing.
Preview & Download PDF
Inspect the processed file, compare file size savings or output quality, and click Download to save the finished PDF file directly to your disk.
Why Use Repair PDF on ShortTrick
Engineered for maximum speed, strict privacy, and frictionless digital productivity.
100% Private & Local
Files processed with Repair PDF never leave your computer or phone. Zero cloud uploads, zero tracking, and zero risk.
Blazing Fast Engine
Powered by compiled WebAssembly code running directly in your browser with sub-second execution for Repair PDF.
No Paywall or Account Required
Repair PDF is completely free with no hidden charges, watermarks, email signups, or artificial daily limits.
High-Fidelity Quality
Advanced algorithms preserve crisp vector text, clear colors, and structural layout integrity.
Generous 50 MB Size Limit
Handle files up to 50 MB and process up to 1 files in convenient batches with Repair PDF.
Cross-Device Compatibility
Runs seamlessly in modern browsers on Windows, macOS, Linux, iOS (iPhone/iPad), and Android.
Supported Formats & Limits
Designed for high performance with browser-side memory guarantees.
50 MB
1
Frequently Asked Questions About Repair PDF
Common questions regarding Repair PDF, data privacy, file format compatibility, and usage limits.
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