Before/After Comparison Bar

Puts two numbers on one shared scale and calls out the delta — the proof-point shape for ‘we cut your load time’ or ‘conversion rate before vs. after’ case studies. Ships a screen-reader summary alongside the bars, so the comparison reads correctly even without the visual.

Stats & Numbers · Astro · Subscription · commercial licence · v1.0.2 · updated 2026-10-15 · Live demo

Install

velocityx add before-after-bar

Subscription component. Run velocityx login with your key first — get one.

---
import BeforeAfterBar from '../components/velocity/before-after-bar/BeforeAfterBar.astro';
---
<BeforeAfterBar />

Props

Prop	Type	Default	Description
title	string	—	—
before	BarPoint	required	—
after	BarPoint	required	—
unit	string	''	Appended after the formatted number, e.g. “s”, ”%”, “ms”.
prefix	string	''	Prefixed before the formatted number, e.g. ”$”.
improvementIsDown	boolean	false	Set when a lower “after” value is the win (load time, cost, churn).

Files written

velocityx drops these into your project:

• components/velocity/before-after-bar/BeforeAfterBar.astro

Peer dependencies

None.

Theming

Colours come from the primary-* / accent-* Tailwind scales, so this drops into a project that is not Velocity without dragging our brand in. Install the contract once:

velocityx theme

Then set your whole brand in one place — raw RGB channels, not hex (a hex here silently breaks every opacity variant):

:root {
  --vx-brand: custom;
  --vx-primary-600: 220 38 38;
}

There is no component-level font-family anywhere in the library — your font cascade wins.

Licence

Commercial, for the duration of an active Velocity X subscription. The source is served by the licence-gated endpoint, never by the public CDN.