# With Social Proof

> A banner showing user counts, ratings, or avatars next to the message. Build instant trust at the top of a page and nudge new visitors to convert.

A shadcn/ui block from the [@shadcn-ui-blocks](https://www.shadcn-ui-blocks.com) registry, listed on [shadcn.exchange](https://shadcn.exchange/r/shadcn-ui-blocks/marketing-announcement-banners-with-social-proof).

- Page, with a live preview: https://shadcn.exchange/r/shadcn-ui-blocks/marketing-announcement-banners-with-social-proof
- Screenshot: https://abzjhwgwpdpz7ua5.public.blob.vercel-storage.com/shots/shadcn-ui-blocks/marketing-announcement-banners-with-social-proof-light-eac5e117c60085f7.png
- Registry item: https://www.shadcn-ui-blocks.com/r/marketing-announcement-banners-with-social-proof.json
- Listed: 2026-10-13, source last changed 2026-10-13

## Install

```bash
npx shadcn@latest add https://www.shadcn-ui-blocks.com/r/marketing-announcement-banners-with-social-proof.json
```

Run it in a project that has shadcn/ui set up. It adds the files below and installs what they depend on.

## Dependencies

- npm packages: `class-variance-authority`, `radix-ui`

## Files

### `components/blocks/marketing/announcement-banners/with-social-proof.tsx`

```tsx
import { Avatar, AvatarFallback, AvatarImage } from "@/components/ui/avatar";
import { Button } from "@/components/ui/button";

export default function WithSocialProof() {
  return (
    <div className="bg-muted">
      <div className="container mx-auto px-4 md:px-6 2xl:max-w-[1400px]">
        <div className="flex items-center justify-between gap-x-6 p-4">
          <div className="flex items-center gap-4">
            <div className="flex -space-x-2">
              <Avatar className="border-2 border-background">
                <AvatarImage src="https://github.com/shadcn.png" />
                <AvatarFallback>CN</AvatarFallback>
              </Avatar>
              <Avatar className="border-2 border-background">
                <AvatarImage src="https://github.com/shadcn.png" />
                <AvatarFallback>CN</AvatarFallback>
              </Avatar>
              <Avatar className="border-2 border-background">
                <AvatarImage src="https://github.com/shadcn.png" />
                <AvatarFallback>CN</AvatarFallback>
              </Avatar>
            </div>
            <p className="text-sm">
              <span className="font-semibold">20+ people</span> joined in the
              last 24 hours
            </p>
          </div>
          <div className="flex items-center gap-2">
            <Button size="sm">Join them</Button>
          </div>
        </div>
      </div>
    </div>
  );
}
```

### `components/ui/avatar.tsx`

```tsx
"use client"

import * as React from "react"
import { Avatar as AvatarPrimitive } from "radix-ui"

import { cn } from "@/lib/utils"

function Avatar({
  className,
  size = "default",
  ...props
}: React.ComponentProps<typeof AvatarPrimitive.Root> & {
  size?: "default" | "sm" | "lg"
}) {
  return (
    <AvatarPrimitive.Root
      data-slot="avatar"
      data-size={size}
      className={cn(
        "group/avatar relative flex size-8 shrink-0 rounded-full select-none after:absolute after:inset-0 after:rounded-full after:border after:border-border after:mix-blend-darken data-[size=lg]:size-10 data-[size=sm]:size-6 dark:after:mix-blend-lighten",
        className
      )}
      {...props}
    />
  )
}

function AvatarImage({
  className,
  ...props
}: React.ComponentProps<typeof AvatarPrimitive.Image>) {
  return (
    <AvatarPrimitive.Image
      data-slot="avatar-image"
      className={cn(
        "aspect-square size-full rounded-full object-cover",
        className
      )}
      {...props}
    />
  )
}

function AvatarFallback({
  className,
  ...props
}: React.ComponentProps<typeof AvatarPrimitive.Fallback>) {
  return (
    <AvatarPrimitive.Fallback
      data-slot="avatar-fallback"
      className={cn(
        "flex size-full items-center justify-center rounded-full bg-muted text-sm text-muted-foreground group-data-[size=sm]/avatar:text-xs",
        className
      )}
      {...props}
    />
  )
}

function AvatarBadge({ className, ...props }: React.ComponentProps<"span">) {
  return (
    <span
      data-slot="avatar-badge"
      className={cn(
        "absolute right-0 bottom-0 z-10 inline-flex items-center justify-center rounded-full bg-primary text-primary-foreground bg-blend-color ring-2 ring-background select-none",
        "group-data-[size=sm]/avatar:size-2 group-data-[size=sm]/avatar:[&>svg]:hidden",
        "group-data-[size=default]/avatar:size-2.5 group-data-[size=default]/avatar:[&>svg]:size-2",
        "group-data-[size=lg]/avatar:size-3 group-data-[size=lg]/avatar:[&>svg]:size-2",
        className
      )}
      {...props}
    />
  )
}

function AvatarGroup({ className, ...props }: React.ComponentProps<"div">) {
  return (
    <div
      data-slot="avatar-group"
      className={cn(
        "group/avatar-group flex -space-x-2 *:data-[slot=avatar]:ring-2 *:data-[slot=avatar]:ring-background",
        className
      )}
      {...props}
    />
  )
}

function AvatarGroupCount({
  className,
  ...props
}: React.ComponentProps<"div">) {
  return (
    <div
      data-slot="avatar-group-count"
      className={cn(
        "relative flex size-8 shrink-0 items-center justify-center rounded-full bg-muted text-sm text-muted-foreground ring-2 ring-background group-has-data-[size=lg]/avatar-group:size-10 group-has-data-[size=sm]/avatar-group:size-6 [&>svg]:size-4 group-has-data-[size=lg]/avatar-group:[&>svg]:size-5 group-has-data-[size=sm]/avatar-group:[&>svg]:size-3",
        className
      )}
      {...props}
    />
  )
}

export {
  Avatar,
  AvatarImage,
  AvatarFallback,
  AvatarGroup,
  AvatarGroupCount,
  AvatarBadge,
}
```

### `components/ui/button.tsx`

```tsx
import * as React from "react"
import { cva, type VariantProps } from "class-variance-authority"
import { Slot } from "radix-ui"

import { cn } from "@/lib/utils"

const buttonVariants = cva(
  "group/button inline-flex shrink-0 items-center justify-center rounded-md border border-transparent bg-clip-padding text-sm font-medium whitespace-nowrap transition-all outline-none select-none focus-visible:border-ring focus-visible:ring-3 focus-visible:ring-ring/50 active:not-aria-[haspopup]:translate-y-px disabled:pointer-events-none disabled:opacity-50 aria-invalid:border-destructive aria-invalid:ring-3 aria-invalid:ring-destructive/20 dark:aria-invalid:border-destructive/50 dark:aria-invalid:ring-destructive/40 [&_svg]:pointer-events-none [&_svg]:shrink-0 [&_svg:not([class*='size-'])]:size-4",
  {
    variants: {
      variant: {
        default: "bg-primary text-primary-foreground hover:bg-primary/80",
        outline:
          "border-border bg-background shadow-xs hover:bg-muted hover:text-foreground aria-expanded:bg-muted aria-expanded:text-foreground dark:border-input dark:bg-input/30 dark:hover:bg-input/50",
        secondary:
          "bg-secondary text-secondary-foreground hover:bg-secondary/80 aria-expanded:bg-secondary aria-expanded:text-secondary-foreground",
        ghost:
          "hover:bg-muted hover:text-foreground aria-expanded:bg-muted aria-expanded:text-foreground dark:hover:bg-muted/50",
        destructive:
          "bg-destructive/10 text-destructive hover:bg-destructive/20 focus-visible:border-destructive/40 focus-visible:ring-destructive/20 dark:bg-destructive/20 dark:hover:bg-destructive/30 dark:focus-visible:ring-destructive/40",
        link: "text-primary underline-offset-4 hover:underline",
      },
      size: {
        default:
          "h-9 gap-1.5 px-2.5 in-data-[slot=button-group]:rounded-md has-data-[icon=inline-end]:pr-2 has-data-[icon=inline-start]:pl-2",
        xs: "h-6 gap-1 rounded-[min(var(--radius-md),8px)] px-2 text-xs in-data-[slot=button-group]:rounded-md has-data-[icon=inline-end]:pr-1.5 has-data-[icon=inline-start]:pl-1.5 [&_svg:not([class*='size-'])]:size-3",
        sm: "h-8 gap-1 rounded-[min(var(--radius-md),10px)] px-2.5 in-data-[slot=button-group]:rounded-md has-data-[icon=inline-end]:pr-1.5 has-data-[icon=inline-start]:pl-1.5",
        lg: "h-10 gap-1.5 px-2.5 has-data-[icon=inline-end]:pr-2 has-data-[icon=inline-start]:pl-2",
        icon: "size-9",
        "icon-xs":
          "size-6 rounded-[min(var(--radius-md),8px)] in-data-[slot=button-group]:rounded-md [&_svg:not([class*='size-'])]:size-3",
        "icon-sm":
          "size-8 rounded-[min(var(--radius-md),10px)] in-data-[slot=button-group]:rounded-md",
        "icon-lg": "size-10",
      },
    },
    defaultVariants: {
      variant: "default",
      size: "default",
    },
  }
)

function Button({
  className,
  variant = "default",
  size = "default",
  asChild = false,
  ...props
}: React.ComponentProps<"button"> &
  VariantProps<typeof buttonVariants> & {
    asChild?: boolean
  }) {
  const Comp = asChild ? Slot.Root : "button"

  return (
    <Comp
      data-slot="button"
      data-variant={variant}
      data-size={size}
      className={cn(buttonVariants({ variant, size, className }))}
      {...props}
    />
  )
}

export { Button, buttonVariants }
```