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Measured entry

eldora-hacker-background

background-effectdark-futuristicmotion on file

A client-side React canvas that draws randomized green character rain over a fading black field. It ships as a single registry component, uses browser animation and resize APIs, and depends only on React. Color, text size, fall speed, and classes are configurable.

Specimen
Motion capture of the mounted demo, recorded by the harness. No audio track.
Harness screenshot of eldora-hacker-background at 375 pixels wide
Harness screenshot at 375 pixels wide. No horizontal overflow recorded.
Harness screenshot of eldora-hacker-background at 768 pixels wide
Harness screenshot at 768 pixels wide. No horizontal overflow recorded.
Harness screenshot of eldora-hacker-background 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 eldora-hacker-background
BuildOK
MountOK
Console errors0
Uncaught page errors0
Horizontal overflowclean at 375, 768, 1440
Axe critical0
Axe serious0
Axe moderate0
Axe minor0
Gzip marginal17.8 KB (83.2 KB build, 65.4 KB baseline)
Bare modeOK
Provider requiredNO
Demo usedwritten from the component source API

Verdict

A focused, dependency-light effect that builds and mounts cleanly even outside a shadcn setup. It suits deliberate cyber-themed surfaces, but its viewport-based sizing, foreground layering, and fixed column allocation after mount deserve adjustment before broad reuse.

Use it if

  • You need a full-bleed terminal or cyber-themed backdrop behind a hero or feature panel.
  • You want a canvas effect whose color and motion can be tuned without adding an animation package.
  • Your layout can give the absolutely positioned canvas a deliberate containing block and layer order.

Skip it if

  • Your product needs restrained motion or a calm visual tone.
  • You need the effect to size itself to a small component rather than the browser viewport.
  • Your layout cannot isolate the canvas behind interactive content.
  • You require the column count to adapt when an already mounted canvas becomes wider.

Install

Installation record for eldora-hacker-background
Declared dependenciesreact
Missing on installnone
Bare installbuilds and mounts without the shadcn-style helpers
Providerno provider required in the harness

Add the client component to your React project and ensure the containing section is positioned with an explicit stacking order and clipped overflow as needed. If Tailwind is absent, replace the pointer-events utility with equivalent CSS or an inline style so the canvas cannot block controls.

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/karthikmudunuri/eldoraui
License
MIT
Record published
2026-08-14

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.