From fec8fe932fb899e9a25bbf175bbe813a6cfd7a3a Mon Sep 17 00:00:00 2001
From: "J. Nick Koston" <nick@home-assistant.io>
Date: Fri, 3 Apr 2026 14:49:02 -1000
Subject: [PATCH] [web_server] Skip ping interval when no SSE clients are
 connected

---
 esphome/components/web_server/web_server.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/esphome/components/web_server/web_server.cpp b/esphome/components/web_server/web_server.cpp
index c2d8844b5a..a57a8d26ff 100644
--- a/esphome/components/web_server/web_server.cpp
+++ b/esphome/components/web_server/web_server.cpp
@@ -415,6 +415,8 @@ void WebServer::setup() {
   // doesn't need defer functionality - if the queue is full, the client JS knows it's alive because it's clearly
   // getting a lot of events
   this->set_interval(10000, [this]() {
+    if (this->events_.empty())
+      return;
     char buf[32];
     auto uptime = static_cast<uint32_t>(millis_64() / 1000);
     buf_append_printf(buf, sizeof(buf), 0, "{\"uptime\":%" PRIu32 "}", uptime);