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Supabase · Concept

Broadcast

Supabase Realtime Broadcast sends low-latency messages between clients on a channel. Messages can use client libraries, HTTP, or database functions.

Last updated

Since
supabase-js 2.76.0 for channel.httpSend(); supabase-js 2.91.

Syntax

channel.send({ type: 'broadcast', event, payload })

In-depth API docs are only for subscribers: parameters, examples, common mistakes and interview practice.

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  • Presence
  • Postgres Changes
  • realtime.send()
  • realtime.send_binary()
  • realtime.broadcast_changes()
  • channel.httpSend()
  • Realtime Authorization

Source: Broadcast | Supabase Docs. Checked 2026-11-03.