Live chat in one line of HTML.

A chat bubble for any site: about 4 KB compressed, styles sealed in a Shadow DOM so it never fights your CSS, and every message lands in one inbox.

Get the snippet

10 KBwidget file, no dependencies
0cookies or trackers
1inbox for every site

Add it to your site

Paste this before </body>. data-site labels conversations in the inbox so you know where each one came from.

data-site: Required. Letters, numbers, dots, dashes. Example: audit.
data-title: Optional header text. Default: “Chat with support”.
data-color: Optional brand colour for the bubble, e.g. #b42318.
data-position: Optional. left moves the bubble to the bottom left.

From your own code: SupportChat.open("prefilled text") and SupportChat.close().

<script src="https://support-chat-4nt.pages.dev/widget.js"
        data-site="your-site" defer></script>

How it behaves

Quiet until needed

Nothing is fetched until a visitor opens the bubble or already has a chat going.

Polite polling

Checks for replies every 3 seconds while a chat is active, slows to 30 seconds when idle, and pauses in background tabs.

Private by design

A chat is tied to a random key stored in the visitor’s browser. No cookies, no third-party scripts. Messages are stored in the operator’s Cloudflare D1 database so a person can reply; replies appear in the open widget.