A download interrupted, an email attachment that will not open, a PDF that shows an error? Helpdf rebuilds the internal structure of the file and, if necessary, recovers each readable page.
How to repair a PDF
Select your file
Click the button or drag and drop your file into the box.
Choose your options
Adjust the settings if needed — the defaults work for most files.
Download the result
Your new file is created instantly in your browser. Click Download.
Frequently asked questions
Can every PDF be repaired?
Most slightly damaged files can be recovered. If a file is almost empty or truncated too early, some pages may be lost.
Are my files safe?
Yes. With Helpdf, your files stay on your device. They are never sent to our servers, nobody else can see them and nothing is stored.
Is Helpdf free?
Yes, every tool is completely free with no sign-up and no watermark. The site is funded by advertising.
Does it work on phone?
Yes. Helpdf works in any modern browser on Android, iPhone, iPad, Windows, Mac and Linux. Very large files may be slower on older phones.