Category: Effects & motion
Text that animates itself character by character using a CSS steps() width animation on a monospace element. A blinking cursor is included by default. Useful for hero hooks, slide reveals, and LLM demo showcases. No JavaScript required.
| Surface | Note |
|---|---|
| Renders as fully-visible static text without animation | |
| google-chat | CSS animation not supported; renders as plain text |
| Field | Type | Required |
|---|---|---|
| text | string. The text to type out. | required |
| size | string. Font size e.g. "32px". Default "28px". | optional |
| weight | string. Font weight e.g. "700". Default "700". | optional |
| color | string. Text colour. Default "#1a1a1a". | optional |
| speed | "slow" | "normal" | "fast" (optional, default "normal") | optional |
| cursor | bool. Show blinking cursor. Default true. | optional |
| delay | string. CSS delay before typing starts. Default "0s". | optional |
{
"type": "typewriter_text",
"text": "A concise description of the content."
}{
"identifier": "urn:air:a2uicatalog.ai:atom:typewriter_text",
"displayName": "Typewriter Text",
"type": "application/vnd.a2ui.atom+json",
"url": "https://a2uicatalog.ai/atoms/typewriter_text/",
"capabilities": [
"web",
"google-meet-stage",
"google-apps-script-side-panel",
"google-apps-script-web",
"mcp-apps",
"android"
],
"description": "Text that animates itself character by character using a CSS steps() width animation on a monospace element. A blinking cursor is included by default. Useful for hero hooks, slide reveals, and LLM demo showcases. No JavaScript required.",
"representativeQueries": [
"show a CSS typewriter animation that reveals text character by character",
"text that animates itself character by character using a css steps() width animation on a monospace",
"render a typewriter text"
]
}The renderer is an open-source Google Apps Script web app. Deploy your own instance in 4 commands — you own the URL, no dependency on the demo endpoint.
git clone https://github.com/a2uicatalog/a2ui
cd a2ui/apps-script-surface/gas-wired-renderer
clasp push && clasp deploy