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Measured entry

magicui-flickering-grid

background-effectdark-futuristicmotion on file

A client-side React canvas background that randomly flickers a configurable grid of squares. It ships as a shadcn registry component, sizes itself with resize and intersection observers, pauses when out of view, and relies on a local cn utility backed by clsx and tailwind-merge plus Tailwind utility classes.

Specimen
Motion capture of the mounted demo, recorded by the harness. No audio track.
Harness screenshot of magicui-flickering-grid at 375 pixels wide
Harness screenshot at 375 pixels wide. This viewport scrolled sideways.
Harness screenshot of magicui-flickering-grid at 768 pixels wide
Harness screenshot at 768 pixels wide. No horizontal overflow recorded.
Harness screenshot of magicui-flickering-grid 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-flickering-grid
BuildOK
MountOK
Console errors0
Uncaught page errors0
Horizontal overflowflagged at 375
Axe critical0
Axe serious0
Axe moderate0
Axe minor0
Gzip marginal30.4 KB (95.9 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 5m 52s
error during build:
[vite:load-fallback] Could not load <sandbox>/src/lib/utils (imported by src/cut/flickering-grid.tsx): ENOENT: no such file or directory, open '<sandbox>/src/lib/utils'

Verdict

A solid ambient effect for React and Tailwind projects, with clean mounting and no reported accessibility violations in the configured harness. It needs a shadcn-style setup because the bare component cannot resolve its local utility import. Check narrow containers and add a reduced-motion strategy before broad use.

Use it if

  • You need an ambient animated grid behind a hero, card, or dashboard panel.
  • Your React app already uses Tailwind and the shadcn-style cn utility.
  • You want control over grid spacing, color, opacity, flicker frequency, and canvas dimensions.

Skip it if

  • Your narrow layout cannot tolerate overflow without an additional responsive wrapper or sizing adjustment.
  • You need animation that automatically respects reduced-motion preferences.
  • You want a static CSS background with no continuous canvas rendering.
  • Your project renders without browser-only canvas and observer APIs.

Install

Installation record for magicui-flickering-grid
Declared dependenciesclsx, 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 clsx and tailwind-merge, create a compatible cn helper, and either configure the local import alias or replace that import with a relative path. Tailwind must provide the sizing and pointer-event utilities. Run it as a client component in an environment with canvas, ResizeObserver, and IntersectionObserver support.

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 background-effect pattern, ordered by what they measured: mounts first, then clean axe scans, then bare-mode passes, then the smaller bundle.