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SPECIFICTION
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CAD Viewer

mlightcad.com

Free plan Web
Visit mlightcad.com
Spec score 7.6 #15 of 31 in CAD Viewer Software

What it is

CAD Viewer is a free, open-source browser WebGL runtime for viewing and editing DWG and DXF drawings. It displays model space, layouts, layers, blocks, and external references. Write mode supports creating, editing, and deleting drawing entities with AutoCAD-style commands. Review tools place arrows, text, clouds, rectangles, circles, and callouts over a read-only drawing background. Measurement tools cover distance, area, angle, and arc length, with results exportable as a JSON sidecar file. The product can export a self-contained HTML viewer for offline use with pan, zoom, layers, and distance measurement; exports can be password- and expiry-protected. Full-viewer examples include HTML and PDF export, while the simple viewer offers lazy-loaded HTML, PDF, and SVG plugins. Parsing and rendering occur on the client, and drawings are not uploaded, cached, or mirrored to a server. It can be embedded through iframe or npm, and a Google Drive integration opens drawings from Drive. The responsive interface supports phones, tablets, and desktops, with touch operations documented for mobile. Read-only mode disables markup, drawing, and modification commands.

Spec sheet

Purpose
CAD Viewer is a browser-based WebGL runtime for viewing and editing DWG/DXF drawings.Read 4 Oct 2026 · mlightcad.com
Intended users
The maker presents CAD Viewer as a free browser CAD product and open-source toolkit for people building web editing workflows.Read 4 Oct 2026 · mlightcad.com
Integrations
The maker describes embedding through iframe or npm and lists a Google Drive integration for opening drawings from Drive.Read 4 Oct 2026 · mlightcad.com
Privacy
The product says drawing parsing and rendering happen on the client and drawings are not uploaded, cached, or mirrored to a server.Read 4 Oct 2026 · mlightcad.com
Company details
The opened maker pages identify the product as MLightCAD but do not state its headquarters or founding year.Read 4 Oct 2026 · mlightcad.com
Drawing support
It displays model space, layouts, layers, blocks, and external references.Read 4 Oct 2026 · mlightcad.com
Editing
Write mode supports creating, editing, and deleting drawing entities, with AutoCAD-style drawing and modification commands.Read 4 Oct 2026 · mlightcad.com
Exports
The examples include HTML and PDF export from the full viewer, and lazy-loaded HTML, PDF, and SVG export plugins in the simple viewer.Read 4 Oct 2026 · mlightcad.com
Languages
The documentation lists English, Chinese, Arabic, Czech, Turkish, Japanese, and Korean interfaces.Read 4 Oct 2026 · mlightcad.com
Measurements
Measurement tools include distance, area, angle, and arc-length measurements, which can be exported as a JSON sidecar file.Read 4 Oct 2026 · mlightcad.com
Notable limit
Read-only mode disables markup, drawing, and modification commands.Read 4 Oct 2026 · mlightcad.com
Offline export
It can export a self-contained HTML viewer that opens offline and supports pan, zoom, layers, and distance measurement; the export can be password- and expiry-protected.Read 4 Oct 2026 · mlightcad.com
Review
Review tools add markups such as arrows, text, clouds, rectangles, circles, and callouts over a read-only drawing background.Read 4 Oct 2026 · mlightcad.com
Supported devices
The responsive interface adapts to phones, tablets, and desktops and documents touch operations for mobile.Read 4 Oct 2026 · mlightcad.com

Plans and prices

Free Free Free browser CAD for viewing, review, and editing · open-source toolkit Read 4 Oct 2026 · mlightcad.com

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Strong points and limits

Strong points

  • Free open-source browser CAD toolkit
  • Supports DWG and DXF
  • Editing uses AutoCAD-style commands
  • Offline HTML viewer export
  • Client-side drawing processing

Limits

  • Read-only mode disables editing tools
  • Drawing support requires a browser
  • No maker headquarters or founding year listed

Who it suits

It suits people building browser-based CAD viewing, review, or editing workflows. Developers can embed it through iframe or npm, while users can work across phones, tablets, and desktops.

Verdict

CAD Viewer combines browser viewing, editing, review markup, measurement, and offline export in an open-source package. Check whether your workflow needs write mode, since read-only mode removes markup and modification commands.

Where Specifiction places it

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