Aakaar Tools Designed by Aarsh Kandra

Clean CAD drawings for Revit.

Drop a DWG or DXF. CAD Cleaner flattens it, explodes blocks, purges and removes junk, then gives you a file Revit imports without complaints. Free, and your drawing never leaves your computer.

  • Free
  • DWG & DXF
  • No upload: runs in your browser
  • Files deleted when you leave

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
      • Audits and repairs drawing errors where safe
      • Writes a Revit-safe DXF that every Revit version imports
      • Keeps layers, colours and coordinates
      • Creates a plain-text report of every change

      How it works

      1. Choose a drawingDrop the consultant’s DWG or DXF onto the tool.
      2. Pick the clean-upUse the recommended settings, or adjust blocks, Z and purge.
      3. Clean in your browserThe engine audits, explodes, flattens and purges on your computer.
      4. DownloadSave the cleaned file and the report. Both are deleted from the page when you leave.
      5. Import into RevitInsert > Import CAD or Link CAD, using the cleaned file.

      Why clean before Revit?

      Consultant drawings arrive with 3D noise, deeply nested blocks, thousands of unused layers and objects kilometres away from the plan.

      Imported as they are, they slow models down, break snapping and view ranges, and sometimes stop Revit altogether.

      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

      Designed and developed by

      Aarsh Kandra

      Aakaar Architecture, BIM and design technology

      Aakaar Tools are designed by Aarsh Kandra to remove the small, repetitive problems that slow architectural teams down: cleaning consultant CAD for Revit, and turning SketchUp design models into classified BIM. They grow out of CAD Cleaner & Smart Import, Aarsh’s add-in that cleans drawings and places them straight into Revit, and out of Aakaar’s own BIM work.

      Get the Revit add-in 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.

      Is CAD Cleaner free?

      Yes. CAD Cleaner is free to use. It is designed by Aarsh Kandra at Aakaar, based on the cleaning engine of the CAD Cleaner & Smart Import add-in for Revit.

      Is there a version that works inside Revit?

      Yes. CAD Cleaner & Smart Import is a Revit add-in by Aarsh Kandra that cleans the drawing and imports or links it into the active view in one step. Contact Aakaar to get it for your team.

      What about Xrefs?

      Xrefs are separate files, so the browser cannot see them. Bind Xrefs into the drawing in AutoCAD (or use the Revit add-in, which resolves them from disk) before cleaning.

      Clean and import in one click, inside Revit.

      CAD Cleaner & Smart Import, the Revit add-in by Aarsh Kandra, cleans the drawing and imports or links it into the active view for Revit 2021 to 2027.

      Get the Revit add-in More tools