How tall should the scroll expand section be?

Two to three screens is typical. The media grows from a small frame to full screen over that scroll distance, so a taller section makes the expansion slower and more cinematic.

How do I install Scroll Expand?

Scroll Expand is part of Charcoal UI Pro. Add the @charcoal registry to components.json with your access token, then run npx shadcn@latest add @charcoal/scroll-expand. It copies scroll-expand.tsx into components/ui and installs motion, clsx, tailwind-merge.

Is Scroll Expand free for commercial use?

Scroll Expand needs a Charcoal UI Pro seat, monthly or a one-time lifetime price. A seat covers unlimited personal and commercial projects, including client work, and every future Pro component.

Does Scroll Expand work with Next.js?

Yes. It is a client component for React 19 styled with Tailwind CSS 4, so it works in the Next.js App Router and Pages Router, Vite, Remix and Astro.

Can an AI coding agent install Scroll Expand?

Yes. Connect the Charcoal UI MCP server (https://charcoalui.com/mcp) to Claude Code, Cursor or any MCP client; get_component returns Scroll Expand's props and get_install_command returns the exact command.

Scroll Expand

A pinned section whose media starts as a small centred frame and grows to fill the viewport as you scroll, with a caption that lands once it is full. The viewport is measured from the scroll container, so it also works inside a scroll box.

Category: Image
Licence: Charcoal UI Pro
Built with: React 19, Tailwind CSS 4, Motion
Dependencies: motion, clsx, tailwind-merge

Examples

Scroll Expand

Scroll inside the box.

API reference

Prop	Type	Default	Description
`src`	`string`	—
`alt`	`string`	`""`
`video`	`boolean`	`false`	Treat `src` as a muted looping video.
`scale`	`number`	`0.35`	Starting size as a fraction of the full frame.
`height`	`number`	`200`	Section height in viewport heights.
`title`	`string`	—	Caption that fades in as the frame lands.
`children`	`ReactNode`	—	Extra caption content under the title.
`container`	`RefObject<HTMLElement \| null>`	—	Scroll container; defaults to the page.
`className`	`string`	—

About Scroll Expand

Scroll Expand pins a section whose media starts as a small centred frame and grows to fill the viewport as you scroll, with a caption that lands at the end.

Scroll Expand is an image effect for React 19, styled with Tailwind CSS 4 and animated with Motion. It drops into Next.js, Vite, Remix or Astro through the shadcn CLI as a single file you own.

When to use Scroll Expand

Product launch videos.
Hero showcases.
Storytelling pages.
Case-study openers.

How it works

A sticky frame's scale and radius map to scroll progress through a tall section.

Images keep their alt text, controls are keyboard operable, and the effect never hides the content it decorates. With prefers-reduced-motion on, it holds still or settles instantly instead of animating.

Customizing Scroll Expand

Every prop is documented in the API reference above with its type and default. The ones you will reach for first are listed here.

The Customize panel next to the preview lets you change scale, height, title live, and the Code tab updates to match, so the snippet you copy already carries your values.

src (string).
alt (string, default "").
video (boolean, default false): Treat `src` as a muted looping video.
scale (number, default 0.35): Starting size as a fraction of the full frame.
height (number, default 200): Section height in viewport heights.
title (string): Caption that fades in as the frame lands.

The example on this page

Scroll Expand: Scroll inside the box.

Goes well with Scroll Expand

These image pieces share its tokens and motion language, so they sit together on one page without clashing.

Parallax Image: A React parallax image that drifts slower than the page as you scroll
Pixelate Reveal: A React pixelate reveal: images resolve from chunky pixels to full detail
Image Reveal: A React image reveal: a clip-path wipe uncovers the image as it settles
Zoom Lens: A React zoom lens: a magnifier follows the pointer over product images
Ken Burns: A React Ken Burns slideshow: slow pan and zoom crossfading through images

Install Scroll Expand

npx shadcn@latest add @charcoal/scroll-expand

Scroll Expand is part of Charcoal UI Pro. One seat unlocks all 300 Pro components, 107 landing-page sections and 100 full templates, for every personal and client project, with updates included. Add the @charcoal registry once with your access token, then the command above copies scroll-expand.tsx into components/ui and installs clsx, tailwind-merge.

You own the file you install: no runtime package, no lock-in, nothing to keep in sync. Change it however your product needs.

See Charcoal UI Pro pricing · Pro setup

Frequently asked questions

How tall should the scroll expand section be?: Two to three screens is typical. The media grows from a small frame to full screen over that scroll distance, so a taller section makes the expansion slower and more cinematic.
How do I install Scroll Expand?: Scroll Expand is part of Charcoal UI Pro. Add the @charcoal registry to components.json with your access token, then run npx shadcn@latest add @charcoal/scroll-expand. It copies scroll-expand.tsx into components/ui and installs motion, clsx, tailwind-merge.
Is Scroll Expand free for commercial use?: Scroll Expand needs a Charcoal UI Pro seat, monthly or a one-time lifetime price. A seat covers unlimited personal and commercial projects, including client work, and every future Pro component.
Does Scroll Expand work with Next.js?: Yes. It is a client component for React 19 styled with Tailwind CSS 4, so it works in the Next.js App Router and Pages Router, Vite, Remix and Astro.
Can an AI coding agent install Scroll Expand?: Yes. Connect the Charcoal UI MCP server (https://charcoalui.com/mcp) to Claude Code, Cursor or any MCP client; get_component returns Scroll Expand's props and get_install_command returns the exact command.

Scroll Expand as Markdown · llms.txt