Repair PDF
Rebuild a PDF's structure so a file that won't open opens again.
Processed entirely in your browser. Your file is never uploaded to a server. It rebuilds the file's index and re-saves a clean structure — it can't recover content that's genuinely destroyed.
- Free — no signup, no account, no watermark
- Runs entirely in your browser — nothing is uploaded to a server
- Works on mobile, tablet and desktop
- Instant — results appear as soon as you enter your input
Why this is private
- Processed entirely in your browser. Your file is never uploaded to a server. It rebuilds the file's index and re-saves a clean structure — it can't recover content that's genuinely destroyed.
- Open your browser's DevTools → Network tab while using this tool — you won't see a request carrying your input, because it never leaves your device.
- Nothing you enter is uploaded to a server or shared with us — the processing happens entirely on your device.
Overview
Reads a PDF that a viewer rejects, tolerating a broken cross-reference table and dangling objects, then re-saves a clean structure. This fixes the common 'file is damaged' cases (truncated index, bad offsets). It cannot rebuild content streams that are actually missing or scrambled, and it can't open password-protected files.
How to use it
- 1Drop in the PDF that won't open.
- 2Wait for the rebuild.
- 3Download the repaired file and try opening it.
Frequently asked questions
What people use it for
Open a file that errors with "damaged or corrupted"Rebuild the structure of a PDF a reader refuses to load after a bad download or transfer.
Recover a document interrupted mid-saveSalvage the readable pages from a PDF that was truncated when an app crashed or a disk filled up.
Fix a PDF another tool choked onRe-serialise a file with a broken cross-reference table so merge, compress or split tools accept it.
Clean up an email attachment that won't previewRepair a PDF that opens on your machine but fails in a webmail or mobile viewer.
Related guides
- How to convert images to PDF (JPG, PNG, phone photos)Turn one or several JPG or PNG images into a single PDF, in the right page order — what the tool does, the steps, and the common snags.
- How to merge PDF files into oneCombine two or more PDFs into a single file, in the order you choose — the steps, what merging does to quality and size, and how to handle pages and images.
- How to compress a PDF to under 1 MBA 1 MB upload limit is common on application portals. Here's what's realistic, how to get there, and when 1 MB simply isn't possible without losing the text.
- How to compress a PDF for email attachmentsGmail, Outlook and most providers cap attachments around 20–25 MB. Here's how to get a PDF under the limit — or send it without shrinking it at all.
Related tools
All pdf toolsCompress PDFReduce PDF file size — rasterize pages, or recompress images while keeping text selectable.Merge PDFCombine multiple PDF files into a single document.Split PDFSplit a PDF into separate files by page range, one file per page, or a maximum file size.PDF to JPGConvert each PDF page into a JPG image — download them one by one or as a zip.
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Repair PDF