URP Outline Effect is a fast, production-ready outline solution built specifically for Unity’s Universal Render Pipeline.
It uses a custom pass and world-space extrusion to draw continuous silhouettes around your meshes — no post-process edge detection, no screen-space flicker, and no extra renderers to manage. Works reliably on multi-mesh characters, modular props, and skinned rigs, with per-object control over color, width, and behavior (visible, hidden, silhouette-only, etc.).