diff --git a/package.json b/package.json
index b03945e94d..4b25347869 100644
--- a/package.json
+++ b/package.json
@@ -69,12 +69,12 @@
 					"discord.detailsEditing": {
 						"type": "string",
 						"default": "Editing {file_name}",
-						"description": "Custom string for the details section of the rich presence\n\t- '{empty}' will be replaced with an empty space.\n\t- '{file_name}' will be replaced with the current file name.\n\t- '{dir_name}' will get replaced with the folder name that has the current file.\n\t- '{full_dir_name}' will get replaced with the full directory name without the current file name.\n\t- '{workspace}' will be replaced with the current workspace name, if any.\n\t- '{workspace_folder}' will be replaced with the currently accessed workspace folder, if any.\n\t- '{workspace_and_folder} will be replaced with the currently accessed workspace and workspace folder like this: 'Workspace - WorkspaceFolder'\n\t- '{current_column}' will get replaced with the current column of the current line.\n\t- '{current_line}' will get replaced with the current line number.\n\t- '{total_lines}' will get replaced with the total line number.\n\t- '{file_size}' will get replaced with the current file's size.\n\t- '{git_repo_name}' will be replaced with the active Git repository name (from the git URL)\n\t- '{git_branch}' will be replaced with the current active branch name."
+						"description": "Custom string for the details section of the rich presence\n\t- '{empty}' will be replaced with an empty space.\n\t- '{file_name}' will be replaced with the current file name.\n\t- '{ext_name}' will get replaced with the current file's extension.\n\t- '{dir_name}' will get replaced with the folder name that has the current file.\n\t- '{full_dir_name}' will get replaced with the full directory name without the current file name.\n\t- '{workspace}' will be replaced with the current workspace name, if any.\n\t- '{workspace_folder}' will be replaced with the currently accessed workspace folder, if any.\n\t- '{workspace_and_folder} will be replaced with the currently accessed workspace and workspace folder like this: 'Workspace - WorkspaceFolder'\n\t- '{current_column}' will get replaced with the current column of the current line.\n\t- '{current_line}' will get replaced with the current line number.\n\t- '{total_lines}' will get replaced with the total line number.\n\t- '{file_size}' will get replaced with the current file's size.\n\t- '{git_repo_name}' will be replaced with the active Git repository name (from the git URL)\n\t- '{git_branch}' will be replaced with the current active branch name."
 					},
 					"discord.detailsDebugging": {
 						"type": "string",
 						"default": "Debugging {file_name}",
-						"description": "Custom string for the details section of the rich presence when debugging\n\t- '{empty}' will be replaced with an empty space.\n\t- '{file_name}' will be replaced with the current file name.\n\t- '{dir_name}' will get replaced with the folder name that has the current file.\n\t- '{full_dir_name}' will get replaced with the full directory name without the current file name.\n\t- '{workspace}' will be replaced with the current workspace name, if any.\n\t- '{workspace_folder}' will be replaced with the currently accessed workspace folder, if any.\n\t- '{workspace_and_folder} will be replaced with the currently accessed workspace and workspace folder like this: 'Workspace - WorkspaceFolder'\n\t- '{current_column}' will get replaced with the current column of the current line.\n\t- '{current_line}' will get replaced with the current line number.\n\t- '{total_lines}' will get replaced with the total line number.\n\t- '{file_size}' will get replaced with the current file's size.\n\t- '{git_repo_name}' will be replaced with the active Git repository name (from the git URL)\n\t- '{git_branch}' will be replaced with the current active branch name."
+						"description": "Custom string for the details section of the rich presence when debugging\n\t- '{empty}' will be replaced with an empty space.\n\t- '{file_name}' will be replaced with the current file name.\n\t- '{ext_name}' will get replaced with the current file's extension.\n\t- '{dir_name}' will get replaced with the folder name that has the current file.\n\t- '{full_dir_name}' will get replaced with the full directory name without the current file name.\n\t- '{workspace}' will be replaced with the current workspace name, if any.\n\t- '{workspace_folder}' will be replaced with the currently accessed workspace folder, if any.\n\t- '{workspace_and_folder} will be replaced with the currently accessed workspace and workspace folder like this: 'Workspace - WorkspaceFolder'\n\t- '{current_column}' will get replaced with the current column of the current line.\n\t- '{current_line}' will get replaced with the current line number.\n\t- '{total_lines}' will get replaced with the total line number.\n\t- '{file_size}' will get replaced with the current file's size.\n\t- '{git_repo_name}' will be replaced with the active Git repository name (from the git URL)\n\t- '{git_branch}' will be replaced with the current active branch name."
 					},
 					"discord.lowerDetailsIdling": {
 						"type": "string",
@@ -84,12 +84,12 @@
 					"discord.lowerDetailsEditing": {
 						"type": "string",
 						"default": "Workspace: {workspace}",
-						"description": "Custom string for the state section of the rich presence\n\t- '{empty}' will be replaced with an empty space.\n\t- '{file_name}' will be replaced with the current file name.\n\t- '{dir_name}' will get replaced with the folder name that has the current file.\n\t- '{full_dir_name}' will get replaced with the full directory name without the current file name.\n\t- '{workspace}' will be replaced with the current workspace name, if any.\n\t- '{workspace_folder}' will be replaced with the currently accessed workspace folder, if any.\n\t- '{workspace_and_folder} will be replaced with the currently accessed workspace and workspace folder like this: 'Workspace - WorkspaceFolder'\n\t- '{current_column}' will get replaced with the current column of the current line.\n\t- '{current_line}' will get replaced with the current line number.\n\t- '{total_lines}' will get replaced with the total line number.\n\t- '{file_size}' will get replaced with the current file's size.\n\t- '{git_repo_name}' will be replaced with the active Git repository name (from the git URL)\n\t- '{git_branch}' will be replaced with the current active branch name."
+						"description": "Custom string for the state section of the rich presence\n\t- '{empty}' will be replaced with an empty space.\n\t- '{file_name}' will be replaced with the current file name.\n\t- '{ext_name}' will get replaced with the current file's extension.\n\t- '{dir_name}' will get replaced with the folder name that has the current file.\n\t- '{full_dir_name}' will get replaced with the full directory name without the current file name.\n\t- '{workspace}' will be replaced with the current workspace name, if any.\n\t- '{workspace_folder}' will be replaced with the currently accessed workspace folder, if any.\n\t- '{workspace_and_folder} will be replaced with the currently accessed workspace and workspace folder like this: 'Workspace - WorkspaceFolder'\n\t- '{current_column}' will get replaced with the current column of the current line.\n\t- '{current_line}' will get replaced with the current line number.\n\t- '{total_lines}' will get replaced with the total line number.\n\t- '{file_size}' will get replaced with the current file's size.\n\t- '{git_repo_name}' will be replaced with the active Git repository name (from the git URL)\n\t- '{git_branch}' will be replaced with the current active branch name."
 					},
 					"discord.lowerDetailsDebugging": {
 						"type": "string",
 						"default": "Debugging: {workspace}",
-						"description": "Custom string for the state section of the rich presence when debugging\n\t- '{empty}' will be replaced with an empty space.\n\t- '{file_name}' will be replaced with the current file name.\n\t- '{dir_name}' will get replaced with the folder name that has the current file.\n\t- '{full_dir_name}' will get replaced with the full directory name without the current file name.\n\t- '{workspace}' will be replaced with the current workspace name, if any.\n\t- '{workspace_folder}' will be replaced with the currently accessed workspace folder, if any.\n\t- '{workspace_and_folder} will be replaced with the currently accessed workspace and workspace folder like this: 'Workspace - WorkspaceFolder'\n\t- '{current_column}' will get replaced with the current column of the current line.\n\t- '{current_line}' will get replaced with the current line number.\n\t- '{total_lines}' will get replaced with the total line number.\n\t- '{file_size}' will get replaced with the current file's size.\n\t- '{git_repo_name}' will be replaced with the active Git repository name (from the git URL)\n\t- '{git_branch}' will be replaced with the current active branch name."
+						"description": "Custom string for the state section of the rich presence when debugging\n\t- '{empty}' will be replaced with an empty space.\n\t- '{file_name}' will be replaced with the current file name.\n\t- '{ext_name}' will get replaced with the current file's extension.\n\t- '{dir_name}' will get replaced with the folder name that has the current file.\n\t- '{full_dir_name}' will get replaced with the full directory name without the current file name.\n\t- '{workspace}' will be replaced with the current workspace name, if any.\n\t- '{workspace_folder}' will be replaced with the currently accessed workspace folder, if any.\n\t- '{workspace_and_folder} will be replaced with the currently accessed workspace and workspace folder like this: 'Workspace - WorkspaceFolder'\n\t- '{current_column}' will get replaced with the current column of the current line.\n\t- '{current_line}' will get replaced with the current line number.\n\t- '{total_lines}' will get replaced with the total line number.\n\t- '{file_size}' will get replaced with the current file's size.\n\t- '{git_repo_name}' will be replaced with the active Git repository name (from the git URL)\n\t- '{git_branch}' will be replaced with the current active branch name."
 					},
 					"discord.lowerDetailsNoWorkspaceFound": {
 						"type": "string",
diff --git a/src/activity.ts b/src/activity.ts
index a3544565ec..d0cc90ca7e 100644
--- a/src/activity.ts
+++ b/src/activity.ts
@@ -113,6 +113,7 @@ async function details(idling: CONFIG_KEYS, editing: CONFIG_KEYS, debugging: CON
 		const { dir } = parse(window.activeTextEditor.document.fileName);
 		const split = dir.split(sep);
 		const dirName = split[split.length - 1];
+		const fileExtension = fileName.includes('.') ? fileName.split('.').at(-1)! : '';
 
 		const noWorkspaceFound = config[CONFIG_KEYS.LowerDetailsNoWorkspaceFound].replace(REPLACE_KEYS.Empty, FAKE_EMPTY);
 		const workspaceFolder = workspace.getWorkspaceFolder(window.activeTextEditor.document.uri);
@@ -144,6 +145,7 @@ async function details(idling: CONFIG_KEYS, editing: CONFIG_KEYS, debugging: CON
 		}
 		raw = raw
 			.replace(REPLACE_KEYS.FileName, fileName)
+			.replace(REPLACE_KEYS.Extension, fileExtension)
 			.replace(REPLACE_KEYS.DirName, dirName)
 			.replace(REPLACE_KEYS.Workspace, workspaceName)
 			.replace(REPLACE_KEYS.WorkspaceFolder, workspaceFolderName)
diff --git a/src/constants.ts b/src/constants.ts
index 84ddb8b0ff..6e6de2104c 100644
--- a/src/constants.ts
+++ b/src/constants.ts
@@ -36,6 +36,7 @@ export const enum REPLACE_KEYS {
 	AppName = '{app_name}',
 	GitRepoName = '{git_repo_name}',
 	GitBranch = '{git_branch}',
+	Extension = '{ext_name}',
 }
 
 export const enum CONFIG_KEYS {