Compare two DXF files online
Load two DXFs and overlay them to see exactly what changed. Added, removed and unchanged geometry are colour-coded — green, red and grey — with a count for each, so revisions are obvious at a glance.
Free · no sign-up · the file is read in your browser and never uploaded.
When a drawing comes back as "rev B", you need to know what actually moved. DXFTools overlays the two files and compares the geometry entity by entity, highlighting what's only in the new file (added, green), what's only in the old file (removed, red) and what's unchanged (grey).
The comparison is signature-based and duplicate-aware, so it correctly handles drawings with repeated geometry rather than mis-matching identical parts. You get counts for added, removed and unchanged entities alongside the visual overlay.
Both files are read locally in your browser and never uploaded — so you can diff confidential revisions without sending anything to a server, and without opening AutoCAD.
What you get
- Overlay two DXFs with a colour-coded diff
- Added (green), removed (red) and unchanged (grey) geometry
- Counts for each category
- Duplicate-aware matching for accurate results
- Both files stay in your browser — nothing is uploaded
Frequently asked questions
- How does it decide what changed?
- It compares entities by a quantised geometric signature and is multiset-aware, so repeated geometry is matched correctly. Entities only in the new file show as added, only in the old file as removed, and shared geometry as unchanged.
- Can I see the counts, not just the colours?
- Yes. Alongside the overlay you get the number of added, removed and unchanged entities.
- Do I need AutoCAD or any paid software?
- No. Everything runs in a normal web browser. There is no install, no licence and no account required.
- Do you upload or store my DXF file?
- No. The file is read and processed entirely in your browser using your device's own resources. It is never sent to a server or stored anywhere.
Try it on your own drawing
Open the studio, drop in your DXF, and compare files — all in your browser, nothing uploaded.
Open DXFTools