Is it safe to repair PDF files online with AziPDF?

Yes, completely. AziPDF repairs all PDFs inside your browser using pdf-lib. Your files are never uploaded to any server — everything happens locally on your device, so your data stays 100% private.

How do I repair a corrupted PDF for free?

Upload your PDF on AziPDF, choose a repair mode (Standard or Deep Recovery), then click Repair PDF. The repaired file downloads instantly — no signup, no watermarks, no limits.

What is the difference between Standard Repair and Deep Recovery?

Standard Repair fixes the most common PDF issues: broken cross-reference tables, invalid object streams, and structural errors — ideal for mildly corrupted PDFs. Deep Recovery uses multiple passes with aggressive recovery techniques for severely damaged PDFs that cannot be fixed with standard repair.

What types of PDF damage can be repaired?

AziPDF can repair corrupted PDF structure, broken cross-reference tables, invalid object streams, damaged page trees, and malformed trailer data. Both encrypted and non-encrypted PDFs are supported.

Is there a file size or page limit?

No. Everything runs in your browser with no server-side limits. Most devices handle PDFs up to 500 MB without any issues.

Can I repair multiple PDFs at once?

Yes. Upload several PDFs and every file is repaired — all packaged into one ZIP archive with clearly named files per source document.

Why might the output file be in a different format?

If the repair engine detects that the uploaded file is actually another format (such as a Word document or image) masquerading as a PDF, the output may reflect the detected format instead.

What if my PDF still cannot be opened after repair?

Try switching to Deep Recovery mode for a more aggressive multi-pass repair attempt. If the file damage is beyond what pdf-lib can recover, you will see an error message for that specific file.

How is AziPDF different from iLovePDF or Smallpdf for PDF repair?

AziPDF is 100% browser-based — your files are never uploaded to any server. iLovePDF and Smallpdf upload files to their servers. AziPDF has no file size limits, no daily usage caps, and no watermarks.

Does PDF repair work on mobile?

Yes. AziPDF is fully optimised for mobile with touch drag-and-drop and a responsive bottom sheet settings panel on all smartphones and tablets.

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Repair PDF Online Free — Fix Corrupted PDF Files Instantly | AziPDF

RepairPDF

Repair PDF Online Free — Fix Corrupted PDF Files Instantly | AziPDF

RepairPDF