CSS

CSS Glow Generator

A soft coloured glow -- layered box-shadow or text-shadow with no offset -- for panels, buttons or text. Multi-layer intensity, two-tone colour, an optional pulse animation, presets, randomize, and export to CSS, Tailwind, SCSS or React.

What this tool does

Builds a soft coloured glow — the effect used on highlighted buttons, active states, and neon-style headings — from stacked zero-offset shadow layers, applied as either box-shadow (for a panel or button) or text-shadow (for text).

Why layered shadows make a real glow

A single shadow layer with no offset just gives a uniform blur ring. Stacking multiple layers — each a slightly different blur radius and a fading opacity — is what produces the soft, gradually-dissipating glow look, rather than a hard-edged halo. The layer count and overall strength are both adjustable.

Two-tone and inset

A two-tone toggle alternates between two colours across the stacked layers for a richer, more chromatic glow instead of one flat colour. An inset option pulls the glow inward — useful for a pressed or recessed look rather than an outward radiance.

Pulse animation

Turning on pulse animates the glow between its normal strength and a brighter peak, alternating back and forth at an adjustable speed — the effect used for an attention-grabbing alert or a live status indicator.

Presets and randomizing

Six presets — Cyan Halo, Neon Pink, Warm Ember, Toxic Green, Soft White, and a pulsing red Alert — cover common uses, plus a randomize button for quick exploration.

Getting the CSS out

Export as plain CSS (including the @keyframes when pulse is on), a Tailwind arbitrary-value class string, SCSS, or a React inline style object, copyable with one click.

Privacy

Everything runs locally in your browser -- nothing you build is sent to a server.

FAQ

Frequently asked questions

Is my data uploaded anywhere?

No. The glow is built and rendered entirely in the browser -- nothing is sent to a server.

Why use multiple shadow layers instead of one?

A single zero-offset shadow layer produces a uniform blur ring. Stacking several layers with different blur radii and fading opacity is what creates the soft, gradually-dissipating glow look instead of a hard-edged halo.

Can the glow be applied to text as well as a panel or button?

Yes -- an "Apply To" switch generates either box-shadow (for a panel or button, with a rounded box, circle, or pill shape) or text-shadow for text.

What does two-tone glow do?

It alternates between two colours across the stacked shadow layers instead of using one flat colour, producing a richer, more chromatic glow.

How does the pulse animation work?

It animates the glow's strength between its current value and a brighter peak, alternating back and forth at an adjustable speed -- the effect used for alerts or live status indicators.

What export formats are available?

Plain CSS (with the @keyframes included when pulse is on), a Tailwind arbitrary-value class string, SCSS, or a React inline style object -- selectable from a dropdown next to the code output.