SurveyRepair a damaged PDF
Fix a PDF that won't open, shows errors or has blank pages. The tool rebuilds the file and keeps every page it can read.
or drop them here
Your files stay on this device
How to repair a damaged PDF
- Choose the damaged PDF.
- Leave "Fix the file" on. Pick "Rebuild from pictures" only if that doesn't work.
- Press Repair PDF and save the fixed copy.
Fix a drawing set that won't open
Big drawing sets sometimes download only part way from a portal or email. Repair keeps every sheet it can read and tells you how many, so you know what to download again.
Private
Your files stay on your device. Nothing is uploaded.
Free
No sign-up, no watermark on your file, no daily limit.
Works offline
Once the page loads, it keeps working without the internet.
Any device
Phone, tablet or computer, in Chrome, Edge or Safari.
Questions
What kind of damage can it fix?
Files cut short by a failed download, files with a broken index, and files with stray data at the start. It saves every page it can still read and tells you how many that was.
What does "Rebuild from pictures" do?
It draws each page as a picture and puts those pictures in a new PDF. It looks the same, but you can't select or search the text. Use it when the normal fix still won't open.
Can I do several files at once?
Yes. Choose or drop several files. Each one gets the same settings, and you save them all in one ZIP.
Can it bring back pages that are missing?
No. If part of the file was never saved or downloaded, that part is gone. The tool keeps everything that is left.
Are my files uploaded?
No. The tool runs in your browser, so your files never leave your device. Nothing is sent to us or kept after you close the tab.
Is it free?
Yes. There is no sign-up, no watermark on your file and no daily limit.
Is there a file size limit?
Only what your device can hold in memory. Most phones handle files of a few hundred MB; a computer handles more.
More free PDF tools
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See every page's size and the facts about a PDF.
Need to mark up the PDF too?
Survey is a full PDF app for drawings. Add pens, shapes, clouds and count markers, and keep every sheet in sync on your computer, iPad and phone.
Open Survey free