diff --git a/esphome/components/web_server/__init__.py b/esphome/components/web_server/__init__.py
index 731efe623b..733b53b039 100644
--- a/esphome/components/web_server/__init__.py
+++ b/esphome/components/web_server/__init__.py
@@ -261,6 +261,8 @@ async def to_code(config):
         cg.add(var.set_css_url(config[CONF_CSS_URL]))
         cg.add(var.set_js_url(config[CONF_JS_URL]))
     cg.add(var.set_allow_ota(config[CONF_OTA]))
+    if config[CONF_OTA]:
+        cg.add_define("USE_WEBSERVER_OTA")
     cg.add(var.set_expose_log(config[CONF_LOG]))
     if config[CONF_ENABLE_PRIVATE_NETWORK_ACCESS]:
         cg.add_define("USE_WEBSERVER_PRIVATE_NETWORK_ACCESS")
diff --git a/esphome/components/web_server_base/web_server_base.cpp b/esphome/components/web_server_base/web_server_base.cpp
index 6f768d0d21..e6d04b16ef 100644
--- a/esphome/components/web_server_base/web_server_base.cpp
+++ b/esphome/components/web_server_base/web_server_base.cpp
@@ -14,7 +14,7 @@
 #endif
 #endif
 
-#ifdef USE_ESP_IDF
+#if defined(USE_ESP_IDF) && defined(USE_WEBSERVER_OTA)
 #include "esphome/components/ota/ota_backend.h"
 #endif
 
@@ -98,7 +98,7 @@ void OTARequestHandler::handleUpload(AsyncWebServerRequest *request, const Strin
   }
 #endif
 
-#ifdef USE_ESP_IDF
+#if defined(USE_ESP_IDF) && defined(USE_WEBSERVER_OTA)
   // ESP-IDF implementation
   if (index == 0) {
     ESP_LOGI(TAG, "OTA Update Start: %s", filename.c_str());
@@ -173,7 +173,7 @@ void OTARequestHandler::handleRequest(AsyncWebServerRequest *request) {
   response->addHeader("Connection", "close");
   request->send(response);
 #endif
-#ifdef USE_ESP_IDF
+#if defined(USE_ESP_IDF) && defined(USE_WEBSERVER_OTA)
   AsyncWebServerResponse *response;
   if (this->ota_started_ && this->ota_backend_) {
     response = request->beginResponse(200, "text/plain", "Update Successful!");
@@ -186,7 +186,7 @@ void OTARequestHandler::handleRequest(AsyncWebServerRequest *request) {
 }
 
 void WebServerBase::add_ota_handler() {
-#if defined(USE_ARDUINO) || defined(USE_ESP_IDF)
+#if defined(USE_ARDUINO) || (defined(USE_ESP_IDF) && defined(USE_WEBSERVER_OTA))
   this->add_handler(new OTARequestHandler(this));  // NOLINT
 #endif
 }
diff --git a/esphome/components/web_server_base/web_server_base.h b/esphome/components/web_server_base/web_server_base.h
index 33aba6247a..75876109b5 100644
--- a/esphome/components/web_server_base/web_server_base.h
+++ b/esphome/components/web_server_base/web_server_base.h
@@ -142,7 +142,7 @@ class OTARequestHandler : public AsyncWebHandler {
   uint32_t last_ota_progress_{0};
   uint32_t ota_read_length_{0};
   WebServerBase *parent_;
-#ifdef USE_ESP_IDF
+#if defined(USE_ESP_IDF) && defined(USE_WEBSERVER_OTA)
   std::unique_ptr<ota::OTABackend> ota_backend_;
   bool ota_started_{false};
 #endif
diff --git a/esphome/components/web_server_idf/multipart_parser.cpp b/esphome/components/web_server_idf/multipart_parser.cpp
index 89417733d6..d13840dac4 100644
--- a/esphome/components/web_server_idf/multipart_parser.cpp
+++ b/esphome/components/web_server_idf/multipart_parser.cpp
@@ -1,4 +1,5 @@
 #ifdef USE_ESP_IDF
+#ifdef USE_WEBSERVER_OTA
 #include "multipart_parser.h"
 #include "esphome/core/log.h"
 
@@ -223,4 +224,5 @@ size_t MultipartParser::find_pattern(const uint8_t *pattern, size_t pattern_len,
 
 }  // namespace web_server_idf
 }  // namespace esphome
-#endif
\ No newline at end of file
+#endif  // USE_WEBSERVER_OTA
+#endif  // USE_ESP_IDF
\ No newline at end of file
diff --git a/esphome/components/web_server_idf/multipart_parser.h b/esphome/components/web_server_idf/multipart_parser.h
index 6d3f3f6575..41ab7d2837 100644
--- a/esphome/components/web_server_idf/multipart_parser.h
+++ b/esphome/components/web_server_idf/multipart_parser.h
@@ -1,5 +1,6 @@
 #pragma once
 #ifdef USE_ESP_IDF
+#ifdef USE_WEBSERVER_OTA
 
 #include <string>
 #include <vector>
@@ -64,4 +65,5 @@ class MultipartParser {
 
 }  // namespace web_server_idf
 }  // namespace esphome
-#endif
\ No newline at end of file
+#endif  // USE_WEBSERVER_OTA
+#endif  // USE_ESP_IDF
\ No newline at end of file
diff --git a/esphome/components/web_server_idf/web_server_idf.cpp b/esphome/components/web_server_idf/web_server_idf.cpp
index 2e1cf185db..1aad9b49d2 100644
--- a/esphome/components/web_server_idf/web_server_idf.cpp
+++ b/esphome/components/web_server_idf/web_server_idf.cpp
@@ -8,7 +8,9 @@
 #include "esp_tls_crypto.h"
 
 #include "utils.h"
+#ifdef USE_WEBSERVER_OTA
 #include "multipart_parser.h"
+#endif
 
 #include "web_server_idf.h"
 
@@ -74,6 +76,7 @@ esp_err_t AsyncWebServer::request_post_handler(httpd_req_t *r) {
   ESP_LOGVV(TAG, "Enter AsyncWebServer::request_post_handler. uri=%s", r->uri);
   auto content_type = request_get_header(r, "Content-Type");
 
+#ifdef USE_WEBSERVER_OTA
   // Check if this is a multipart form data request (for OTA updates)
   bool is_multipart = false;
   std::string boundary;
@@ -92,6 +95,13 @@ esp_err_t AsyncWebServer::request_post_handler(httpd_req_t *r) {
       return AsyncWebServer::request_handler(r);
     }
   }
+#else
+  if (content_type.has_value() && content_type.value() != "application/x-www-form-urlencoded") {
+    ESP_LOGW(TAG, "Only application/x-www-form-urlencoded supported for POST request");
+    // fallback to get handler to support backward compatibility
+    return AsyncWebServer::request_handler(r);
+  }
+#endif
 
   if (!request_has_header(r, "Content-Length")) {
     ESP_LOGW(TAG, "Content length is requred for post: %s", r->uri);
@@ -99,6 +109,7 @@ esp_err_t AsyncWebServer::request_post_handler(httpd_req_t *r) {
     return ESP_OK;
   }
 
+#ifdef USE_WEBSERVER_OTA
   // Handle multipart form data
   if (is_multipart && !boundary.empty()) {
     // Create request object
@@ -167,6 +178,7 @@ esp_err_t AsyncWebServer::request_post_handler(httpd_req_t *r) {
     found_handler->handleRequest(&req);
     return ESP_OK;
   }
+#endif  // USE_WEBSERVER_OTA
 
   // Handle regular form data
   if (r->content_len > HTTPD_MAX_REQ_HDR_LEN) {