Aakaar Tools Designed by Aarsh Kandra

Clean CAD drawings for Revit.

Drop a DWG or DXF and get back a clean file that Revit imports without problems.

  • Free
  • DWG & DXF
  • No upload: runs in your browser
  • Files deleted when you leave
  1. Upload
  2. Configure
  3. Clean
  4. Download

1Choose a drawing

2Choose how to clean it

Drawing type
Download as
Flatten Z
Blocks
More options purge, duplicates, outliers, units, origin
Purge unused layers, blocks and styles
Remove duplicate geometry
Remove zero-length, invalid and empty objects
Far-away stray objects
Proxy objects
Position
Drawing units

Choose a file first.

3Cleaning

Starting the engine…

    Everything happens in this tab. Large drawings can take a minute; keep the page open.

    Your drawing is clean.

      Download cleaned file Download report

      Files are kept only in this tab’s memory and are deleted automatically when you leave this page, or after 30 minutes without activity.

      Designed by Aarsh Kandra CAD Cleaner by Aakaar

      The drawing could not be cleaned.

      This browser cannot run CAD Cleaner.

      CAD Cleaner needs a recent version of Chrome, Edge, Firefox or Safari. Please update your browser, or open this page on a computer.

      What CAD Cleaner does

      • Flattens every object to one elevation (Z = 0)
      • Explodes nested blocks, keeping attribute text
      • Purges unused layers, blocks, linetypes and styles
      • Removes zero-length, invalid and empty objects
      • Removes exact duplicate lines and arcs
      • Finds stray objects far from the drawing

      Why clean before Revit?

      Consultant drawings arrive with 3D noise, nested blocks and junk that slow Revit down.

      1. 1AuditRepair errors in the drawing
      2. 2ExplodeBlocks become plain geometry
      3. 3FlattenEverything at one elevation
      4. 4PurgeUnused definitions removed
      5. 5Revit-safe fileImports cleanly, every version
      Aarsh Kandra, architect, founder and principal of Aakaar

      Architect Founder and Principal, Aakaar

      Aarsh Kandra

      Architecture, BIM, computational design and automation

      Architect, and founder and principal of Aakaar, a digital architecture studio in Nagpur. He designs these tools to take repetitive work off architectural teams, building on CAD Cleaner & Smart Import, his Revit add-in.

      Get the Revit add-in More about Aarsh About Aakaar Automation at Aakaar

      Questions

      Are my drawings uploaded to a server?

      No. CAD Cleaner runs entirely in your web browser. The drawing is read, cleaned and saved on your own computer; nothing is sent to Aakaar or anyone else.

      When are the files deleted?

      The uploaded drawing and the cleaned result exist only in this browser tab's memory. They are deleted when you press "Delete files now", when you close or leave the page, or after 30 minutes without activity. Nothing is stored in cookies, local storage or on a server.

      Which file formats are supported?

      DWG files from AutoCAD R14 onwards, including the DWG 2018 format used by recent AutoCAD versions, and DXF (ASCII and binary). The cleaned result can be downloaded as a Revit-safe DXF (R12), a modern DXF, or a DWG in AutoCAD 2000 format, which every version of AutoCAD and Revit opens.

      Why is the Revit-safe DXF recommended?

      Revit occasionally rejects or crashes on drawings that contain complex objects. The Revit-safe DXF keeps only simple, flat geometry (lines, arcs, polylines, text) with all blocks expanded, which Revit imports reliably in every version.

      Does it change my original file?

      Never. The tool works on a copy held in memory. Your original drawing on your computer is not touched.

      Clean and import in one click, inside Revit.

      The Revit add-in does the same cleaning and imports the drawing in one click.

      Get the Revit add-in More tools

      WhatsApp