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Measured entry

magicui-border-beam

hover-effectgradient-glowmotion on file

A client-side React overlay that sends a gradient beam around the inherited border radius of a positioned container. It ships as a shadcn registry component, uses Motion for the looping path animation, and expects Tailwind utility support plus the local cn helper backed by clsx and tailwind-merge.

Specimen
Motion capture of the mounted demo, recorded by the harness. No audio track.
Harness screenshot of magicui-border-beam at 375 pixels wide
Harness screenshot at 375 pixels wide. No horizontal overflow recorded.
Harness screenshot of magicui-border-beam at 768 pixels wide
Harness screenshot at 768 pixels wide. No horizontal overflow recorded.
Harness screenshot of magicui-border-beam at 1440 pixels wide
Harness screenshot at 1440 pixels wide. No horizontal overflow recorded.

Measured

Every value below was written by the harness on the run that produced the frames above. None of it is derived from the prose.

Harness measurements recorded for magicui-border-beam
BuildOK
MountOK
Console errors0
Uncaught page errors0
Horizontal overflowclean at 375, 768, 1440
Axe critical0
Axe serious0
Axe moderate0
Axe minor0
Gzip marginal70.2 KB (135.7 KB build, 65.5 KB baseline)
Bare modeFAIL
Provider requiredNO
Demo usedwritten from the component source API

What the harness recorded

BARE BUILD

✗ Build failed in 2.00s
error during build:
[vite:load-fallback] Could not load <sandbox>re-788563beb8cd/src/lib/utils (imported by src/cut/border-beam.tsx): ENOENT: no such file or directory, open '<sandbox>re-788563beb8cd/src/lib/utils'

Verdict

A focused, flexible accent that builds and mounts cleanly in its intended environment. It needs a shadcn-style setup as provided, because the bare project cannot resolve the expected local utility helper. Best used sparingly where perpetual motion earns attention.

Use it if

  • You want a decorative animated edge on cards, panels, or callouts.
  • Your app already uses the shadcn utility layout and Tailwind conventions.
  • You need configurable colors, direction, timing, and transition behavior.

Skip it if

  • Your project avoids continuous motion or needs a built-in reduced-motion fallback.
  • You do not use Tailwind and do not want to translate its mask and gradient utilities.
  • Adding Motion for a decorative border is not worth the dependency cost.
  • The target container cannot be positioned and clipped for an absolute overlay.

Install

Installation record for magicui-border-beam
Declared dependenciesmotion, clsx, tailwind-merge
Missing on installnone
Bare installfails once the shadcn-style helpers are removed, so it needs that setup
Providerno provider required in the harness

In a non-shadcn project, add Motion, Tailwind, clsx, and tailwind-merge; create a cn utility or replace that call; configure the alias used by the import; and ensure the required mask, gradient, arbitrary-property, and client-component syntax is supported. Add your own reduced-motion treatment if needed.

Source and credit

This page is a review, not a copy. The component source lives with its author and this site does not republish it. Read the license before you use anything.

Author repository

github.com/magicuidesign/magicui
License
MIT
Record published
2026-08-17

Alternatives

Other published entries for the hover-effect pattern, ordered by what they measured: mounts first, then clean axe scans, then bare-mode passes, then the smaller bundle.