URDF (Unified Robot Description Format) is the XML format ROS uses to describe a robot — its links, joints, kinematics, and visual geometry. It's the standard way robots are modeled for simulation and motion planning.

Why don't the detailed meshes show up?

URDF references external mesh files (package://…/link.stl) that live in separate files. Since everything runs locally in your browser from a single file, we render the primitive link geometry and the full kinematic skeleton; drop a model that uses box/cylinder/sphere visuals for a complete picture.

No. The URDF is parsed and rendered entirely in your browser with local JavaScript. Nothing is sent to a server.

Does it work on mobile?

Yes. The viewer is mobile-first and works on phones, tablets, and desktops.

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URDF viewer

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URDF · .urdf

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Unified Robot Description Format — ROS robot models.

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About URDF

Unified Robot Description Format — ROS robot models.

URDF (Unified Robot Description Format) is the XML standard ROS uses to describe a robot's links, joints, and kinematics. We parse the description with fast-xml-parser and rebuild the kinematic tree in three.js, rendering every primitive link (box, cylinder, sphere) and laying out the joints with their correct relative transforms — all in your browser, with nothing uploaded.

FAQ

What is a URDF file?: URDF (Unified Robot Description Format) is the XML format ROS uses to describe a robot — its links, joints, kinematics, and visual geometry. It's the standard way robots are modeled for simulation and motion planning.
Why don't the detailed meshes show up?: URDF references external mesh files (package://…/link.stl) that live in separate files. Since everything runs locally in your browser from a single file, we render the primitive link geometry and the full kinematic skeleton; drop a model that uses box/cylinder/sphere visuals for a complete picture.
Is my file uploaded?: No. The URDF is parsed and rendered entirely in your browser with local JavaScript. Nothing is sent to a server.
Does it work on mobile?: Yes. The viewer is mobile-first and works on phones, tablets, and desktops.

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