Repair CAD — Fix Corrupted DWG & DXF Files
Fix corrupted, damaged, or truncated DWG and DXF files and clean up redundant data — missing DXF terminators, unclosed sections, orphaned blocks and more are repaired in your browser. Recover DWG drawings as DXF, batch-repair up to 10 CAD files at once, and download them individually or as a ZIP.
Key Features
DWG Recovery
Recover damaged and truncated DWG drawings as DXF through a WebAssembly converter — no AutoCAD needed.
DXF Structure Repair
Rebuilds missing structure — the closing 0 EOF, unclosed sections, a missing HEADER section or $ACADVER variable — and strips trailing garbage.
Clean Up Redundant Data
Removes unused block definitions and orphaned elements so the file is smaller and cleaner without changing the visible drawing.
Version Detection
Reads the DWG binary header or the DXF $ACADVER variable to identify the AutoCAD release of every file you repair.
Batch Repair
Repair up to 10 CAD files at once and download them individually or as a single ZIP archive.
100% Private
All processing happens locally in your browser. Your drawings never leave your device — nothing is uploaded or stored.
What Is CAD Repair?
DWG and DXF are the standard drawing formats of AutoCAD and other CAD software, and they can become corrupted in many ways: an interrupted save, a crashed session, a failed conversion, a cut-off download, or a failing drive. For DXF — a plain text format — corruption usually means broken structure: a missing closing 0 EOF marker, sections that were never closed, a HEADER section without its $ACADVER version variable, or stray bytes past the end of the file. For DWG — AutoCAD's binary format — the drawing itself can often be recovered by reading it and exporting it as DXF. This tool repairs both entirely in your browser: it audits the file's structure, fixes what it can with surgical edits that leave the rest of the file untouched, and cleans up unused block definitions so the result is smaller and tidier.
How to Repair a CAD File
Repairing a CAD file takes just a few steps. Everything runs in your browser.
Upload the damaged CAD files
Drag and drop up to 10 corrupted DWG or DXF files, or click the upload area to select them.
Files repair automatically
Your files are repaired as soon as you add them — no button needed. DXF structure is rebuilt and DWG drawings are recovered as DXF.
Check the results
Files that could be repaired appear below the dropzone marked as Done with a list of the fixes applied. Files that are too damaged show an error message.
Download the repaired files
Download a single repaired file, or download all recovered files as one ZIP archive.
Good to Know
Not every damaged CAD file can be fully repaired — a DWG with an unrecognized binary header or bytes that the recovery engine cannot read will be reported as unrepairable. Repairing a DXF rebuilds its structure; geometry that was already lost from a truncated file cannot be recreated. Cleaning up unused blocks never removes blocks that are actually referenced in the drawing, and the model and paper space blocks are always preserved, so the visible result is unchanged. Repaired files are re-encoded as UTF-8 text and use LF line endings.