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Upload a damaged or corrupted PDF file and our multi-engine repair system will automatically recover it. Fast, free, and 100% private — no software to install.
Drag & drop your damaged PDF file, or click the button below to browse. Our engine will repair it automatically.
Drag & drop your corrupted or damaged PDF file onto the upload area, or click Select PDF File to browse.
Our multi-engine repair system analyzes the damage, rebuilds the document structure, and recovers all readable content.
Download your repaired PDF with one click. The file is permanently deleted from our server immediately after download.
Rebuilds cross-reference tables and fixes linearisation errors while fully preserving vector quality and embedded fonts.
Re-interprets and re-emits every page at the PDF rendering level. Discards all structural damage entirely.
Renders each page as a high-resolution image and assembles a new PDF. Recovers even severely broken files.
Re-streams each page into a fresh PDF container. The final safety net for files with intact page content but damaged wrappers.
Four repair strategies tried in cascade — from structural recovery to full rasterization — for maximum success rate.
All transfers are encrypted via HTTPS. Files are stored in a private temporary folder and permanently deleted after download.
Most files are repaired in under 30 seconds. No waiting in queues — your file is processed instantly on a dedicated server.
Fully responsive — use on desktop, tablet, or mobile. No app download or browser extension needed.
Completely free with no account required. Upload, repair, and download — that's it. No limits, no subscriptions.
Your repaired PDF is ready to download with a single click. Automatic file naming so you always know what you're saving.
A corrupted PDF is a file whose internal data structure has been damaged to the point that standard PDF readers refuse to open it, display blank pages, or show garbled characters. The PDF format stores content in a highly structured series of objects, cross-reference tables, and page-content streams — any damage to these components can render the file unreadable.
Corruption does not necessarily mean the actual page content is lost. In many cases, the visible text and images are intact but the "map" telling your PDF reader where to find them is broken. Our repair tool reconstructs this map and recovers the file.
PDF files can become corrupted for many reasons:
Our server applies a cascade of four repair strategies, starting with the highest-fidelity method and automatically falling back to increasingly aggressive techniques if earlier stages fail:
The first stage to produce a valid, non-empty PDF is used as the final result. You always receive the highest-quality repair that is possible for your specific file.
Our multi-engine approach repairs the vast majority of corrupted files. However, if the actual content data (page streams, images, text glyphs) has been physically overwritten or deleted, no repair tool — online or offline — can recover that data. In those cases you will receive the best possible partial recovery.
When qpdf or GhostScript repair succeeds, the PDF is virtually identical to the original — all vector graphics, fonts, and colours are preserved at full quality. If the rasterization fallback is used, the result is a high-resolution image-based PDF, which is visually accurate but non-selectable text.
Yes — 100% free with no account required. Use it as many times as you need. No subscription, no hidden fees.
All uploads use HTTPS encryption. Your file is stored in a private temporary folder accessible only during your session and is permanently and automatically deleted from our server immediately after you download the repaired result.
You can upload PDFs up to 20 MB. If your file is larger, try compressing it first using our Compress PDF tool, then run the repair.
No installation needed. The entire process runs in your browser and on our server. Works on Windows, Mac, Linux, iOS, and Android.