DXF to Image / SVG#

Convert DXF (CAD) files to PNG, JPG, or SVG. Useful when you have DXF from map-grabber, Rhino, or other CAD tools and need a raster image to send in chat or a vector SVG for editing.

Dependencies#

• ezdxf (DXF read + drawing add-on)
• matplotlib (for PNG/JPG only)
• Pillow (for JPG only)

Setup: OpenClaw does not install Python packages automatically. After installing this skill, run once: pip install -r requirements.txt (from the skill folder). If a script fails with ModuleNotFoundError, install the missing package.

Usage#

Convert DXF to PNG, JPG, or SVG#

Parameters:

• input: Path to the DXF file.
• -o, --output: Output file path (default: same name as input with .png, .jpg, or .svg).
• -f, --format: png (default), jpg, or svg.
• --width, --height: Output size in pixels for PNG/JPG only (keeps aspect ratio if only one is set).
• --dpi: DPI for PNG/JPG (default 150).
• --margin: Margin in mm for SVG (default 2).

bash

# DXF to PNG (default)
python3 scripts/convert_dxf.py drawing.dxf -o drawing.png

# DXF to SVG (vector, no matplotlib for this path)
python3 scripts/convert_dxf.py site.dxf -f svg -o site.svg

# DXF to JPG
python3 scripts/convert_dxf.py site.dxf -f jpg -o site.jpg

# Fixed width 800px (height auto)
python3 scripts/convert_dxf.py map.dxf -o map.png --width 800

Sending images to Telegram#

Used from the OpenClaw Telegram conversation. Run the script with -o <path>.png or -o <path>.jpg, then send that file to the user via the OpenClaw message/media tool.

OpenClaw allowed paths: The message tool only sends files from allowed dirs ( ~/.openclaw/media/, ~/.openclaw/agents/, or /tmp). Use e.g. -o ~/.openclaw/media/out.png or -o /tmp/out.png; do not use the skill install directory or sending will fail.

Agent behavior: When the user asks to convert a DXF to PNG, JPG, or SVG (or "send DXF as image"), run the script directly with exec: use convert_dxf.py <dxf_path> -o <output> with -f png/ jpg/ svg and output path under an allowed dir; then send the generated file. Do not ask for confirmation; execute and return the file.

Examples#

User: "Convert this DXF to PNG so I can send it in Telegram."

Action: Run convert_dxf.py <path> -o /tmp/out.png, then send the PNG to the user.

User: "Export the DXF as SVG."

Action: Run convert_dxf.py <path> -f svg -o /tmp/out.svg, then send or return the SVG path.

User: "Turn the site DXF into a JPG, 1200px wide."

Action: Run with -f jpg -o /tmp/site.jpg --width 1200, then send the JPG.