Repair PDF
Attempt to recover damaged, corrupted, or malformed PDF files by rebuilding a clean PDF structure for download.
What it does
Try to recover a PDF that opens incorrectly or causes errors in a viewer. Repair produces a new copy when enough of the document is readable, but it cannot recreate pages or information that are missing from the original file.
How to use it
Upload one PDF
Drop or browse for a damaged or malformed PDF up to 50MB.
Run repair
Start the single-click repair action. No page ranges, rotation, position, or password options are required.
Download recovered output
If recovery succeeds, download the repaired PDF and review the original size, repaired size, and recovered page count.
Best for
Broken downloads
Try to recover PDFs with incomplete structure after interrupted transfers or upload issues.
Malformed exports
Clean up PDFs exported by older systems that generated invalid objects or xref tables.
Archive cleanup
Create cleaner copies of readable but poorly formed PDFs before storing or sharing them.
Pre-processing fixes
Repair PDFs before running other PDF Studio workflows that require a readable document.
Graceful failure checks
Quickly identify files that are too severely damaged or encrypted to recover through automated repair.
Tips for best results
- Try downloading the original again before attempting a repair.
- Keep the damaged file until you have checked the repaired copy.
- Inspect every page for missing text, images or signatures.
Why use Repair PDF?
Practical advantages built around real creation, selling, and operations workflows.
Lenient PDF parsing
Repair PDF attempts to load damaged documents with permissive parsing that can tolerate common malformed objects and broken PDF structures.
Clean re-save
When parsing succeeds, the tool re-serializes the document with pdf-lib to rebuild a cleaner xref table and object structure.
Output validation
The repaired PDF is parsed again before download to confirm recovered pages are present and accessible.
Clear recovery limits
Some severely corrupted, fully unreadable, or encrypted PDFs cannot be recovered, so the UI returns a clear error instead of silently failing.
Works in your browser — nothing to install
Upload, process and download from your device without installing desktop software or plugins. Check the tool above for sign-in requirements before starting.
Download recent results again
Signed-in users can find recent successful results in History. Save your own copy after processing so you have it when you need it.
Repair PDF questions
Answers to common questions before you run the tool.
How many credits does Repair PDF use?
Repair PDF uses 2 credits per successful repaired PDF. Failed repair attempts return an error and do not create a repaired output.
Which files can I upload?
The tool accepts one PDF file up to 50MB with MIME type application/pdf.
Can Repair PDF recover every corrupted file?
No. The tool attempts recovery with lenient parsing, but severely corrupted, fully unreadable, or encrypted files may not be recoverable.
What does the repair process do?
It loads the PDF with relaxed parsing options, re-saves it to rebuild PDF structure, then validates that the output can be parsed and has accessible pages.
Can I run Repair PDF on a normal PDF?
Yes. If the file is already readable, Repair PDF still runs a harmless re-save and returns a cleaned copy.
Is my file kept after processing?
Your upload is used to complete the requested task. Finished files can be downloaded from recent History when you are signed in. There is currently no fixed automatic deletion period for saved results; contact support@azanai.cloud to request deletion. Download a local copy rather than relying on History as your only backup.
Can I try this tool for free?
A free account starts with monthly credits. Tool access and any available guest trial are shown above; some tools require sign-in or a paid plan. Check the displayed cost before starting. Failed tasks are refunded, and paid plans include non-image tasks under fair use.
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