Smart PDF
Recovery Engine
Reconstruct fully corrupted XREF tables, trailers, catalog references, and missing end-of-file signatures dynamically.
Forensic Repair Capabilities
Dynamic heuristic reconstruction powered by advanced byte analysis
Broken XREF Tables
Rebuild completely scrambled or invalid cross-reference byte offsets.
Invalid startxref Pointers
Auto-scan raw bytes to locate actual XREF start locations.
Missing %%EOF Markers
Repair truncated footers and restore end-of-file structural markers.
Corrupted Byte Offsets
Dynamically realign offset mapping for objects and dictionary keys.
Damaged Trailer Dictionaries
Reconstruct root /Catalog, document size, and cross-reference links.
Linearized PDF Corruption
Heal web-optimized structure conflicts and repair page index trees.
Incremental Update Errors
Resolve revision clashes and reconcile partial/incremental edits.
Partially Truncated Files
Recover orphaned text stream fragments and reconstruct lost pages.
How PDF Repair Works
Reconstruct and rescue unreadable document data in 3 steps.
Upload Corrupted PDF
Select the broken or damaged PDF file. The browser loads its byte structure locally.
Forensic Synthesis
The engine scans signature markers, rebuilds invalid XREF catalogs, and recovers orphan stream nodes.
Download Restored PDF
Once internal dictionaries are reconstructed and verified, save your repaired document instantly.
Advanced Forensic PDF Recovery
Repair damaged structures, missing EOF tags, or corrupted cross-reference indexes locally in your web browser.
Heuristic Reconstruction
Intelligent correction algorithms parse raw file buffers to build functional catalogs and object graphs.
Deep Scan Diagnostic
Thorough byte search scans every object reference boundary to salvage content streams even with heavy structural damage.
100% Client-Side Engine
Your files are never sent to external servers. All repair execution runs entirely inside local sandboxed memory.
Frequently Asked Questions
Common queries regarding client-side forensic PDF repair.
Q.How does the repair engine reconstruct a corrupted PDF?
The engine performs byte-level structural scanning to locate the Catalog root, rebuild missing cross-reference (XREF) tables, repair malformed trailers, and fix invalid stream lengths dynamically in memory.
Q.Is my document data sent to any servers?
No, your files are never uploaded. All repair logic runs client-side inside your browser's local sandbox memory using secure WebAssembly.
Q.Does it guarantee 100% page recovery?
Success depends on the severity of byte truncation. Basic structural glitches, invalid markers, and broken index tables are 100% salvageable, while severely truncated files or zeroed-out streams might result in partial content recovery.
Q.Is there a limit on the file size?
There is no limit. Since execution is local, it relies only on your device's available processing memory and browser limits.