Repair corrupted, damaged, or truncated PDF files by running them through Ghostscript PDF writer, which reconstructs the file structure and recovers as much content as possible from broken documents
Our free PDF repair tool tries to rescue corrupted, damaged, or truncated PDF files so you can open and read them again. If a document will not open, shows a "file is damaged" message, or was cut off during a download, upload it here and let the tool attempt a rebuild. It runs your file through the professional Ghostscript PDF writer, which reconstructs the internal structure and recovers as much readable content as it can. It fixes many common problems, and while no tool can promise full recovery of a badly broken file, it is often the fastest way to get a working copy back, with no signup and no watermark.
Repairing a PDF with File Tools Online takes three quick steps, and you do not need Adobe Acrobat or any recovery software.
Drag and drop the file that will not open into the box above, or click to browse and select it.
The Ghostscript engine reads the file, reconstructs its structure, and recovers as much content as it can.
Download the rebuilt PDF and open it to check the result. Files are processed securely and deleted within 30 minutes.
The repaired file is a fresh copy of your document with the internal structure rewritten from the ground up, and in many cases it opens normally when the original would not. Keep the original too, so you can compare the two and confirm the repaired copy has everything you need.
A corrupted PDF can feel like lost work, especially when it is the only copy of a contract, a form, or a report. This tool gives it a real chance by rebuilding the file with Ghostscript, the same engine used in production printing.
Ghostscript rewrites the file structure from scratch and recovers readable content, rather than just patching a few bytes.
The same trusted PDF writer used for professional printing, so damaged and truncated files get a serious repair attempt.
The tool recovers as much as it can, without pretending every severely damaged file can be fully restored.
Repair a PDF free online with no trial, no watermark on your pages, and no email required to download.
Files are processed over an encrypted connection and automatically deleted within 30 minutes.
Runs online on Windows, Mac, Linux, Chromebook, Android, and iPhone. Nothing to download and nothing to install.
A PDF is a structured file with an index that tells a reader where every page and object lives. When that index or the objects it points to get scrambled, the reader cannot make sense of the file and refuses to open it. Corruption like this usually creeps in during transfer and storage, not from the content.
Common causes include an interrupted download or upload that left the file truncated, a transfer over email or a messaging app that altered the bytes, a drive or memory card with bad sectors, an export that wrote a malformed file, or a sync that saved an incomplete version. In each case the page content is often still inside the file, just unreachable because the structure around it is broken.
This is where the tool helps. Ghostscript reads through the file, rebuilds the cross-reference table and object structure, and writes out a fresh PDF that points to the content it could recover, fixing many broken indexes, truncated files, and malformed exports. It cannot invent data that was never delivered, so a file that lost half its bytes may come back only partially, but rebuilding the structure is often enough to make an unreadable file open again.
A PDF that will not open shows up at the worst moments, and it is rarely because the document was written badly. These are the situations where a repair is worth a try.
File Tools Online offers more than 100 free tools to convert, edit, and manage your documents. These are the ones people reach for most alongside the PDF repair tool.
It is only fair to be honest: no PDF repair tool can fix every file, and anyone promising 100 percent recovery is overselling it. What this tool does is give your document a genuine, professional-grade repair attempt and recover as much as the file allows.
When the damage is limited to the file structure, such as a broken index or a slightly truncated file, the results are often very good, and the rebuilt PDF opens and reads normally. When the damage is severe, for example a file that lost a large chunk of data during a failed transfer, the tool can usually still produce something, but content that was never fully present cannot be brought back. You may get a partial recovery, which is often enough to rescue the important pages.
The practical approach is simple: run the repair, open the result, and see how much came back. Because the tool works on a copy, there is no downside to trying. If the first attempt does not help, keep the original safe, since a better copy may exist in an email, a backup, or where you first downloaded it.
If you are not sure whether a file is corrupted or something else is wrong, these are the common error messages and symptoms that point to a damaged PDF worth repairing:
If any of these describe your file, it is a good candidate for a repair attempt.
Because this is an online PDF repair tool, it works the same on every device. There is no program to install on Windows, no app to download on Mac, and nothing to add to your phone, you use the same page whether you are on a laptop, a Chromebook, an Android device, or an iPhone.
That makes it easy to repair a PDF on Mac, on a work computer where you cannot install recovery software, or on your phone when a downloaded file will not open. The repair runs on our servers using the Ghostscript engine, so even a large or heavily damaged document is processed quickly. All you need is a browser and an internet connection.
Yes. The PDFs people need to repair are often contracts, scans, and records that hold private information, so security is built in. Files are uploaded over an encrypted HTTPS connection, processed on a secure server, and automatically deleted within 30 minutes. We never share, sell, or reuse your documents, and you do not need an account or an email address to repair a file.
Upload the corrupted file to the tool above and let it run. Ghostscript rebuilds the file structure and recovers as much readable content as it can, then you download the repaired copy. It all runs online in your browser with nothing to install.
It fixes many common problems, especially broken structure and truncated files, but no tool can guarantee full recovery of a severely damaged document. It recovers as much as the file allows, which is often enough to make an unreadable PDF open again, sometimes fully and sometimes only in part.
When the damage is limited to the file structure, you often get the whole document back. When large parts of the file were lost, only the content that is still present can be recovered, so the result may be partial. Open the repaired copy to see how much came back.
That message from Adobe usually means the file structure is corrupted. This tool takes a different approach: instead of patching the existing file, it rebuilds it from scratch with Ghostscript, which often succeeds where the reader's own repair gave up.
Yes. Repairing a PDF here is completely free, with no watermark added to your pages and no signup required. Upload the broken file, let the tool rebuild it, and download the result.
No. This is a free online alternative to desktop repair software. It runs the Ghostscript engine on our servers, so you get a professional-grade repair attempt with nothing to install.
No. The tool only reads your uploaded file and writes out a separate, rebuilt copy. Your original is never modified, so there is no risk in trying, and you can keep it as a fallback.
Often, yes. Ghostscript can rebuild the structure around whatever content did arrive, which frequently makes a truncated file open again. If a large amount of data never downloaded, the recovery may be partial, so it is also worth re-downloading the file from its source if you can.
Yes. Files are transferred over an encrypted connection, processed securely, and automatically deleted within 30 minutes. We never share or sell your documents, and no account is required.
If the rebuilt copy still does not open or is missing important content, keep your original safe and look for a cleaner source, such as the original email, a backup, or the site you downloaded it from. A file that lost too much data in transfer may not be fully recoverable by any tool.
PDFs are trusted because they look the same on every device, but they are still ordinary files that can be damaged. An interrupted download, a bad sector on a drive, a rough transfer over email, or a faulty export can leave the internal structure scrambled, and your reader then refuses to open the document. The frustrating part is that the actual pages are often still inside the file, locked away behind a broken index.
A good PDF repair tool works by rebuilding that structure rather than guessing at the missing pieces. This free online tool does exactly that with the Ghostscript engine, recovering as much readable content as it can. It fixes many common problems and is frequently enough to turn an unopenable file back into a usable one, though a severely damaged document may only come back in part. There is no account and no watermark: upload your broken PDF, let it rebuild, and download a copy you can actually open.