A neon sign effect combines a glowing multi-layered text-shadow with an occasional subtle flicker animation to mimic the slightly unstable light of a real neon tube, giving text a retro, eye-catching quality.
Enter your sign text and choose a neon color, see the glow and flicker animate live against a dark background, then copy the CSS needed to recreate the same neon effect on your own page.
The flicker animation uses a keyframe sequence that briefly dims the glow's opacity at a few irregular points during the cycle, mimicking the characteristic imperfect flicker of a real neon tube rather than a perfectly steady glow.
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Frequently asked questions
Does this work well on a light background?
Like most glow effects, this looks best against a dark background where the glow has strong visible contrast — on a light background the glow tends to lose most of its visual impact.
Can I make the flicker more or less frequent?
Yes, adjust the keyframe percentages and timing in the generated CSS animation to control how often and how dramatically the flicker dims during each cycle.