cadkit-wasm

Read DWG, DGN (V7 and V8), DXF and CityGML 2.0 drawings in the browser or in Node with WebAssembly, and write SVG, JSON, DXF, seed-based DGN V8 and CityGML 2.0. Built from the Rust library cadkit. Everything runs locally; files are never uploaded.

npm install cadkit-wasm

Browser and bundlers

import init, { read } from "cadkit-wasm";

await init();                                   // loads cadkit_wasm_bg.wasm next to the module
const doc = read(new Uint8Array(await file.arrayBuffer()));
console.log(doc.info());                        // { format, version, units, models, ... }
const svg = doc.toSvg({ widthPx: 1200 });
doc.free();

Node

cadkit-wasm/node is a CommonJS build that is ready as soon as it is loaded:

const { read } = require("cadkit-wasm/node");   // or: import { read } from "cadkit-wasm/node"
const fs = require("node:fs");

const doc = read(fs.readFileSync("plan.dwg"));
console.log(doc.layers());
doc.free();

The default entry also works in Node when it is given the module bytes: await init({ module_or_path: fs.readFileSync(require.resolve("cadkit-wasm/cadkit_wasm_bg.wasm")) }).

The API (options, errors, limits, DGN and CityGML export) is documented in docs/wasm.md.

"DWG", "DGN" and "DXF" name file formats only; cadkit is not affiliated with or certified by any CAD vendor.

License

Copyright 2026 TNYCL (tnycl.com). Licensed under either of the Apache License, Version 2.0 or the MIT license at your option (LICENSE-APACHE, LICENSE-MIT).