Repair PDF

Repair PDF performs a best-effort rebuild of a PDF that the browser’s PDF library can already load. It creates a new document, copies every readable page, transfers the source title and author, and saves fresh PDF bytes.

It does not reconstruct unreadable bytes, recover deleted content, decrypt protected files, restore attachments, or guarantee repair of corruption. A file too damaged to load cannot reach the page-copy step.

Rebuilding pages can sometimes resolve structural quirks caused by a problematic save or unsupported document organization. It is a practical retry for a readable PDF that behaves inconsistently in another viewer.

• Copy readable pages into a fresh PDF
• Preserve title and author when available
• Try a simpler document structure
• Keep processing on the device

The implementation loads the source while ignoring encryption flags, creates an empty PDF, copies all source pages in order, sets title and author, and saves the result.

Only information explicitly copied by that process is guaranteed by the code. Bookmarks, attachments, forms, comments, scripts, signatures, metadata beyond title and author, and other document-level structures may be lost or altered.

A successful download means the library could rebuild pages; it does not prove that every original feature survived or that all corruption was corrected. Validate page count, visible content, text, forms, links, and required metadata.

Repair attempts can produce incomplete documents that look plausible. For records, evidence, contracts, or irreplaceable material, preserve the original and use forensic or vendor recovery services when needed.

There is no damage score or recovery algorithm. The operation succeeds only if the library can parse the input and copy its pages into a new document.

Repair PDF is a limited page-copy rebuild for files that remain readable enough to parse. It may resolve structural quirks, but it is not forensic recovery; preserve the source and verify every required feature in the output.