diff --git a/doc/classes/TextEdit.xml b/doc/classes/TextEdit.xml
index eedf3b848f..e8a54c6c20 100644
--- a/doc/classes/TextEdit.xml
+++ b/doc/classes/TextEdit.xml
@@ -404,7 +404,7 @@
 				Returns an empty [code]Dictionary[/code] if no result was found. Otherwise, returns a [code]Dictionary[/code] containing [code]line[/code] and [code]column[/code] entries, e.g:
 				[codeblock]
 				var result = search(key, flags, line, column)
-				if !result.empty():
+				if !result.is_empty():
 				    # Result found.
 				    var line_number = result.line
 				    var column_number = result.column
diff --git a/editor/debugger/editor_visual_profiler.cpp b/editor/debugger/editor_visual_profiler.cpp
index d7a09d6b0c..8e8edbbe9a 100644
--- a/editor/debugger/editor_visual_profiler.cpp
+++ b/editor/debugger/editor_visual_profiler.cpp
@@ -666,7 +666,7 @@ bool EditorVisualProfiler::is_profiling() {
 Vector<Vector<String>> EditorVisualProfiler::get_data_as_csv() const {
 	Vector<Vector<String>> res;
 #if 0
-	if (frame_metrics.empty()) {
+	if (frame_metrics.is_empty()) {
 		return res;
 	}
 
diff --git a/modules/mono/mono_gd/support/android_support.cpp b/modules/mono/mono_gd/support/android_support.cpp
index bc2ae03299..5bd70748c3 100644
--- a/modules/mono/mono_gd/support/android_support.cpp
+++ b/modules/mono/mono_gd/support/android_support.cpp
@@ -134,7 +134,7 @@ String determine_app_native_lib_dir() {
 }
 
 String get_app_native_lib_dir() {
-	if (app_native_lib_dir_cache.empty())
+	if (app_native_lib_dir_cache.is_empty())
 		app_native_lib_dir_cache = determine_app_native_lib_dir();
 	return app_native_lib_dir_cache;
 }
diff --git a/modules/mono/utils/mono_reg_utils.cpp b/modules/mono/utils/mono_reg_utils.cpp
index 9902744743..52d3fa93be 100644
--- a/modules/mono/utils/mono_reg_utils.cpp
+++ b/modules/mono/utils/mono_reg_utils.cpp
@@ -188,7 +188,7 @@ String find_msbuild_tools_path() {
 				if (key == "installationPath") {
 					String val = line.substr(sep_idx + 1, line.length()).strip_edges();
 
-					ERR_BREAK(val.empty());
+					ERR_BREAK(val.is_empty());
 
 					if (!val.ends_with("\\")) {
 						val += "\\";
diff --git a/modules/text_server_fb/dynamic_font_fb.cpp b/modules/text_server_fb/dynamic_font_fb.cpp
index ca9e5b580b..120774d8e7 100644
--- a/modules/text_server_fb/dynamic_font_fb.cpp
+++ b/modules/text_server_fb/dynamic_font_fb.cpp
@@ -54,7 +54,7 @@ DynamicFontDataFallback::DataAtSize *DynamicFontDataFallback::get_data_for_size(
 		fds = E->get();
 	} else {
 		if (font_mem == nullptr && font_path != String()) {
-			if (!font_mem_cache.empty()) {
+			if (!font_mem_cache.is_empty()) {
 				font_mem = font_mem_cache.ptr();
 				font_mem_size = font_mem_cache.size();
 			} else {
diff --git a/modules/text_server_fb/text_server_fb.cpp b/modules/text_server_fb/text_server_fb.cpp
index 675d0e5d4d..0cc56a6735 100644
--- a/modules/text_server_fb/text_server_fb.cpp
+++ b/modules/text_server_fb/text_server_fb.cpp
@@ -550,7 +550,7 @@ bool TextServerFallback::shaped_text_add_string(RID p_shaped, const String &p_te
 	ERR_FAIL_COND_V(!sd, false);
 	ERR_FAIL_COND_V(p_size <= 0, false);
 
-	if (p_text.empty()) {
+	if (p_text.is_empty()) {
 		return true;
 	}
 
@@ -573,7 +573,7 @@ bool TextServerFallback::shaped_text_add_string(RID p_shaped, const String &p_te
 			span.fonts.push_back(p_fonts[i]);
 		}
 	}
-	ERR_FAIL_COND_V(span.fonts.empty(), false);
+	ERR_FAIL_COND_V(span.fonts.is_empty(), false);
 	span.font_size = p_size;
 	span.language = p_language;
 
diff --git a/platform/javascript/api/javascript_tools_editor_plugin.cpp b/platform/javascript/api/javascript_tools_editor_plugin.cpp
index a063718a0c..2096dacdd8 100644
--- a/platform/javascript/api/javascript_tools_editor_plugin.cpp
+++ b/platform/javascript/api/javascript_tools_editor_plugin.cpp
@@ -108,7 +108,7 @@ void JavaScriptToolsEditorPlugin::_zip_recursive(String p_path, String p_base_pa
 	}
 	dir->list_dir_begin();
 	String cur = dir->get_next();
-	while (!cur.empty()) {
+	while (!cur.is_empty()) {
 		String cs = p_path.plus_file(cur);
 		if (cur == "." || cur == ".." || cur == ".import") {
 			// Skip
diff --git a/platform/javascript/display_server_javascript.cpp b/platform/javascript/display_server_javascript.cpp
index 92e13553fc..643530541d 100644
--- a/platform/javascript/display_server_javascript.cpp
+++ b/platform/javascript/display_server_javascript.cpp
@@ -93,7 +93,7 @@ EM_BOOL DisplayServerJavaScript::fullscreen_change_callback(int p_event_type, co
 	DisplayServerJavaScript *display = get_singleton();
 	// Empty ID is canvas.
 	String target_id = String::utf8(p_event->id);
-	if (target_id.empty() || target_id == String::utf8(display->canvas_id)) {
+	if (target_id.is_empty() || target_id == String::utf8(display->canvas_id)) {
 		// This event property is the only reliable data on
 		// browser fullscreen state.
 		if (p_event->isFullscreen) {
diff --git a/platform/javascript/http_client_javascript.cpp b/platform/javascript/http_client_javascript.cpp
index cb0e48b8a9..b81de88fbf 100644
--- a/platform/javascript/http_client_javascript.cpp
+++ b/platform/javascript/http_client_javascript.cpp
@@ -78,15 +78,15 @@ Error HTTPClient::prepare_request(Method p_method, const String &p_url, const Ve
 	ERR_FAIL_INDEX_V(p_method, METHOD_MAX, ERR_INVALID_PARAMETER);
 	ERR_FAIL_COND_V_MSG(p_method == METHOD_TRACE || p_method == METHOD_CONNECT, ERR_UNAVAILABLE, "HTTP methods TRACE and CONNECT are not supported for the HTML5 platform.");
 	ERR_FAIL_COND_V(status != STATUS_CONNECTED, ERR_INVALID_PARAMETER);
-	ERR_FAIL_COND_V(host.empty(), ERR_UNCONFIGURED);
+	ERR_FAIL_COND_V(host.is_empty(), ERR_UNCONFIGURED);
 	ERR_FAIL_COND_V(port < 0, ERR_UNCONFIGURED);
 	ERR_FAIL_COND_V(!p_url.begins_with("/"), ERR_INVALID_PARAMETER);
 
 	String url = (use_tls ? "https://" : "http://") + host + ":" + itos(port) + p_url;
 	godot_xhr_reset(xhr_id);
 	godot_xhr_open(xhr_id, _methods[p_method], url.utf8().get_data(),
-			username.empty() ? nullptr : username.utf8().get_data(),
-			password.empty() ? nullptr : password.utf8().get_data());
+			username.is_empty() ? nullptr : username.utf8().get_data(),
+			password.is_empty() ? nullptr : password.utf8().get_data());
 
 	for (int i = 0; i < p_headers.size(); i++) {
 		int header_separator = p_headers[i].find(": ");
@@ -132,7 +132,7 @@ HTTPClient::Status HTTPClient::get_status() const {
 }
 
 bool HTTPClient::has_response() const {
-	return !polled_response_header.empty();
+	return !polled_response_header.is_empty();
 }
 
 bool HTTPClient::is_response_chunked() const {
@@ -145,7 +145,7 @@ int HTTPClient::get_response_code() const {
 }
 
 Error HTTPClient::get_response_headers(List<String> *r_response) {
-	if (polled_response_header.empty())
+	if (polled_response_header.is_empty())
 		return ERR_INVALID_PARAMETER;
 
 	Vector<String> header_lines = polled_response_header.split("\r\n", false);
diff --git a/scene/animation/animation_player.cpp b/scene/animation/animation_player.cpp
index 159ccae130..506106687b 100644
--- a/scene/animation/animation_player.cpp
+++ b/scene/animation/animation_player.cpp
@@ -782,13 +782,13 @@ void AnimationPlayer::_animation_process_data(PlaybackData &cd, float p_delta, f
 		delta = next_pos - cd.pos; // Fix delta (after determination of backwards because negative zero is lost here)
 
 		if (&cd == &playback.current) {
-			if (!backwards && cd.pos <= len && next_pos == len /*&& playback.blend.empty()*/) {
+			if (!backwards && cd.pos <= len && next_pos == len) {
 				//playback finished
 				end_reached = true;
 				end_notify = cd.pos < len; // Notify only if not already at the end
 			}
 
-			if (backwards && cd.pos >= 0 && next_pos == 0 /*&& playback.blend.empty()*/) {
+			if (backwards && cd.pos >= 0 && next_pos == 0) {
 				//playback finished
 				end_reached = true;
 				end_notify = cd.pos > 0; // Notify only if not already at the beginning
diff --git a/scene/gui/rich_text_label.cpp b/scene/gui/rich_text_label.cpp
index 68c0f5eb5b..82f2106432 100644
--- a/scene/gui/rich_text_label.cpp
+++ b/scene/gui/rich_text_label.cpp
@@ -2359,7 +2359,7 @@ bool RichTextLabel::remove_line(const int p_line) {
 
 void RichTextLabel::push_dropcap(const String &p_string, const Ref<Font> &p_font, int p_size, const Rect2 &p_dropcap_margins, const Color &p_color, int p_ol_size, const Color &p_ol_color) {
 	ERR_FAIL_COND(current->type == ITEM_TABLE);
-	ERR_FAIL_COND(p_string.empty());
+	ERR_FAIL_COND(p_string.is_empty());
 	ERR_FAIL_COND(p_font.is_null());
 	ERR_FAIL_COND(p_size <= 0);
 
diff --git a/scene/resources/text_paragraph.cpp b/scene/resources/text_paragraph.cpp
index c9e8a8fbc6..60e86e95db 100644
--- a/scene/resources/text_paragraph.cpp
+++ b/scene/resources/text_paragraph.cpp
@@ -147,7 +147,7 @@ void TextParagraph::_shape_lines() {
 					TS->free(line);
 					break;
 				}
-				if (!tab_stops.empty()) {
+				if (!tab_stops.is_empty()) {
 					TS->shaped_text_tab_align(line, tab_stops);
 				}
 				if (align == HALIGN_FILL && (line_breaks.size() == 1 || i < line_breaks.size() - 1)) {