diff --git a/README.md b/README.md
index e5ab59e..360bb72 100644
--- a/README.md
+++ b/README.md
@@ -9,7 +9,7 @@
 
 A Python script for checking syntax of crontab files. Cross-platform support for Linux, macOS, and Windows.
 
-**[English](https://github.com/wachawo/checkcrontab/blob/main/README.md)** | [Español](https://github.com/wachawo/checkcrontab/blob/main/docs/README_ES.md) | [Português](https://github.com/wachawo/checkcrontab/blob/main/docs/README_PT.md) | [Français](https://github.com/wachawo/checkcrontab/blob/main/docs/README_FR.md) | [Deutsch](https://github.com/wachawo/checkcrontab/blob/main/docs/README_DE.md) | [Italiano](https://github.com/wachawo/checkcrontab/blob/main/docs/README_IT.md) | [Русский](https://github.com/wachawo/checkcrontab/blob/main/docs/README_RU.md) | [中文](https://github.com/wachawo/checkcrontab/blob/main/docs/README_ZH.md) | [日本語](https://github.com/wachawo/checkcrontab/blob/main/docs/README_JA.md) | [हिन्दी](https://github.com/wachawo/checkcrontab/blob/main/docs/README_HI.md)
+**[English](https://github.com/wachawo/checkcrontab/blob/main/README.md)** | [Español](https://github.com/wachawo/checkcrontab/blob/main/docs/README_ES.md) | [Português](https://github.com/wachawo/checkcrontab/blob/main/docs/README_PT.md) | [Français](https://github.com/wachawo/checkcrontab/blob/main/docs/README_FR.md) | [Deutsch](https://github.com/wachawo/checkcrontab/blob/main/docs/README_DE.md) | [Italiano](https://github.com/wachawo/checkcrontab/blob/main/docs/README_IT.md) | [Русский](https://github.com/wachawo/checkcrontab/blob/main/docs/README_RU.md) | [中文](https://github.com/wachawo/checkcrontab/blob/main/docs/README_ZH.md) | [日本語](https://github.com/wachawo/checkcrontab/blob/main/docs/README_JA.md) | [हिन्दी](https://github.com/wachawo/checkcrontab/blob/main/docs/README_HI.md) | [한국어](https://github.com/wachawo/checkcrontab/blob/main/docs/README_KR.md)
 
 <img width="1108" height="257" alt="image" src="https://github.com/user-attachments/assets/9ad75b94-3a72-4d0f-b9f4-9e1b22ac475d" />
 
diff --git a/docs/README_DE.md b/docs/README_DE.md
index 17a9f1e..339bb3d 100644
--- a/docs/README_DE.md
+++ b/docs/README_DE.md
@@ -10,7 +10,7 @@
 
 Ein Python-Skript zur Überprüfung der Syntax von crontab-Dateien. Plattformübergreifende Unterstützung für Linux, macOS und Windows.
 
-**[English](https://github.com/wachawo/checkcrontab/blob/main/README.md)** | [Español](https://github.com/wachawo/checkcrontab/blob/main/docs/README_ES.md) | [Português](https://github.com/wachawo/checkcrontab/blob/main/docs/README_PT.md) | [Français](https://github.com/wachawo/checkcrontab/blob/main/docs/README_FR.md) | **[Deutsch](https://github.com/wachawo/checkcrontab/blob/main/docs/README_DE.md)** | [Italiano](https://github.com/wachawo/checkcrontab/blob/main/docs/README_IT.md) | [Русский](https://github.com/wachawo/checkcrontab/blob/main/docs/README_RU.md) | [中文](https://github.com/wachawo/checkcrontab/blob/main/docs/README_ZH.md) | [日本語](https://github.com/wachawo/checkcrontab/blob/main/docs/README_JA.md) | [हिन्दी](https://github.com/wachawo/checkcrontab/blob/main/docs/README_HI.md)
+**[English](https://github.com/wachawo/checkcrontab/blob/main/README.md)** | [Español](https://github.com/wachawo/checkcrontab/blob/main/docs/README_ES.md) | [Português](https://github.com/wachawo/checkcrontab/blob/main/docs/README_PT.md) | [Français](https://github.com/wachawo/checkcrontab/blob/main/docs/README_FR.md) | **[Deutsch](https://github.com/wachawo/checkcrontab/blob/main/docs/README_DE.md)** | [Italiano](https://github.com/wachawo/checkcrontab/blob/main/docs/README_IT.md) | [Русский](https://github.com/wachawo/checkcrontab/blob/main/docs/README_RU.md) | [中文](https://github.com/wachawo/checkcrontab/blob/main/docs/README_ZH.md) | [日本語](https://github.com/wachawo/checkcrontab/blob/main/docs/README_JA.md) | [हिन्दी](https://github.com/wachawo/checkcrontab/blob/main/docs/README_HI.md) | [한국어](https://github.com/wachawo/checkcrontab/blob/main/docs/README_KR.md)
 
 ### Anforderungen
 
diff --git a/docs/README_ES.md b/docs/README_ES.md
index ada9172..de8e1f2 100644
--- a/docs/README_ES.md
+++ b/docs/README_ES.md
@@ -9,7 +9,7 @@
 
 Un script de Python para verificar la sintaxis de archivos crontab. Soporte multiplataforma para Linux, macOS y Windows.
 
-**[English](https://github.com/wachawo/checkcrontab/blob/main/README.md)** | **[Español](https://github.com/wachawo/checkcrontab/blob/main/docs/README_ES.md)** | [Português](https://github.com/wachawo/checkcrontab/blob/main/docs/README_PT.md) | [Français](https://github.com/wachawo/checkcrontab/blob/main/docs/README_FR.md) | [Deutsch](https://github.com/wachawo/checkcrontab/blob/main/docs/README_DE.md) | [Italiano](https://github.com/wachawo/checkcrontab/blob/main/docs/README_IT.md) | [Русский](https://github.com/wachawo/checkcrontab/blob/main/docs/README_RU.md) | [中文](https://github.com/wachawo/checkcrontab/blob/main/docs/README_ZH.md) | [日本語](https://github.com/wachawo/checkcrontab/blob/main/docs/README_JA.md) | [हिन्दी](https://github.com/wachawo/checkcrontab/blob/main/docs/README_HI.md)
+**[English](https://github.com/wachawo/checkcrontab/blob/main/README.md)** | **[Español](https://github.com/wachawo/checkcrontab/blob/main/docs/README_ES.md)** | [Português](https://github.com/wachawo/checkcrontab/blob/main/docs/README_PT.md) | [Français](https://github.com/wachawo/checkcrontab/blob/main/docs/README_FR.md) | [Deutsch](https://github.com/wachawo/checkcrontab/blob/main/docs/README_DE.md) | [Italiano](https://github.com/wachawo/checkcrontab/blob/main/docs/README_IT.md) | [Русский](https://github.com/wachawo/checkcrontab/blob/main/docs/README_RU.md) | [中文](https://github.com/wachawo/checkcrontab/blob/main/docs/README_ZH.md) | [日本語](https://github.com/wachawo/checkcrontab/blob/main/docs/README_JA.md) | [हिन्दी](https://github.com/wachawo/checkcrontab/blob/main/docs/README_HI.md) | [한국어](https://github.com/wachawo/checkcrontab/blob/main/docs/README_KR.md)
 
 ### Requisitos
 
diff --git a/docs/README_FR.md b/docs/README_FR.md
index 1644d77..79872d8 100644
--- a/docs/README_FR.md
+++ b/docs/README_FR.md
@@ -9,7 +9,7 @@
 
 Un script Python pour vérifier la syntaxe des fichiers crontab. Support multiplateforme pour Linux, macOS et Windows.
 
-**[English](https://github.com/wachawo/checkcrontab/blob/main/README.md)** | [Español](https://github.com/wachawo/checkcrontab/blob/main/docs/README_ES.md) | [Português](https://github.com/wachawo/checkcrontab/blob/main/docs/README_PT.md) | **[Français](https://github.com/wachawo/checkcrontab/blob/main/docs/README_FR.md)** | [Deutsch](https://github.com/wachawo/checkcrontab/blob/main/docs/README_DE.md) | [Italiano](https://github.com/wachawo/checkcrontab/blob/main/docs/README_IT.md) | [Русский](https://github.com/wachawo/checkcrontab/blob/main/docs/README_RU.md) | [中文](https://github.com/wachawo/checkcrontab/blob/main/docs/README_ZH.md) | [日本語](https://github.com/wachawo/checkcrontab/blob/main/docs/README_JA.md) | [हिन्दी](https://github.com/wachawo/checkcrontab/blob/main/docs/README_HI.md)
+**[English](https://github.com/wachawo/checkcrontab/blob/main/README.md)** | [Español](https://github.com/wachawo/checkcrontab/blob/main/docs/README_ES.md) | [Português](https://github.com/wachawo/checkcrontab/blob/main/docs/README_PT.md) | **[Français](https://github.com/wachawo/checkcrontab/blob/main/docs/README_FR.md)** | [Deutsch](https://github.com/wachawo/checkcrontab/blob/main/docs/README_DE.md) | [Italiano](https://github.com/wachawo/checkcrontab/blob/main/docs/README_IT.md) | [Русский](https://github.com/wachawo/checkcrontab/blob/main/docs/README_RU.md) | [中文](https://github.com/wachawo/checkcrontab/blob/main/docs/README_ZH.md) | [日本語](https://github.com/wachawo/checkcrontab/blob/main/docs/README_JA.md) | [हिन्दी](https://github.com/wachawo/checkcrontab/blob/main/docs/README_HI.md) | [한국어](https://github.com/wachawo/checkcrontab/blob/main/docs/README_KR.md)
 
 ### Exigences
 
diff --git a/docs/README_HI.md b/docs/README_HI.md
index 8f420f2..7d72195 100644
--- a/docs/README_HI.md
+++ b/docs/README_HI.md
@@ -9,7 +9,7 @@
 
 crontab फ़ाइलों के सिंटैक्स की जांच के लिए Python स्क्रिप्ट। Linux, macOS और Windows के लिए क्रॉस-प्लेटफ़ॉर्म समर्थन।
 
-**[English](https://github.com/wachawo/checkcrontab/blob/main/README.md)** | [Español](https://github.com/wachawo/checkcrontab/blob/main/docs/README_ES.md) | [Português](https://github.com/wachawo/checkcrontab/blob/main/docs/README_PT.md) | [Français](https://github.com/wachawo/checkcrontab/blob/main/docs/README_FR.md) | [Deutsch](https://github.com/wachawo/checkcrontab/blob/main/docs/README_DE.md) | [Italiano](https://github.com/wachawo/checkcrontab/blob/main/docs/README_IT.md) | [Русский](https://github.com/wachawo/checkcrontab/blob/main/docs/README_RU.md) | [中文](https://github.com/wachawo/checkcrontab/blob/main/docs/README_ZH.md) | [日本語](https://github.com/wachawo/checkcrontab/blob/main/docs/README_JA.md) | **[हिन्दी](https://github.com/wachawo/checkcrontab/blob/main/docs/README_HI.md)**
+**[English](https://github.com/wachawo/checkcrontab/blob/main/README.md)** | [Español](https://github.com/wachawo/checkcrontab/blob/main/docs/README_ES.md) | [Português](https://github.com/wachawo/checkcrontab/blob/main/docs/README_PT.md) | [Français](https://github.com/wachawo/checkcrontab/blob/main/docs/README_FR.md) | [Deutsch](https://github.com/wachawo/checkcrontab/blob/main/docs/README_DE.md) | [Italiano](https://github.com/wachawo/checkcrontab/blob/main/docs/README_IT.md) | [Русский](https://github.com/wachawo/checkcrontab/blob/main/docs/README_RU.md) | [中文](https://github.com/wachawo/checkcrontab/blob/main/docs/README_ZH.md) | [日本語](https://github.com/wachawo/checkcrontab/blob/main/docs/README_JA.md) | **[हिन्दी](https://github.com/wachawo/checkcrontab/blob/main/docs/README_HI.md)** | [한국어](https://github.com/wachawo/checkcrontab/blob/main/docs/README_KR.md)
 
 ### आवश्यकताएं
 
diff --git a/docs/README_IT.md b/docs/README_IT.md
index 0ea17ce..59a2888 100644
--- a/docs/README_IT.md
+++ b/docs/README_IT.md
@@ -9,7 +9,7 @@
 
 Uno script Python per controllare la sintassi dei file crontab. Supporto multipiattaforma per Linux, macOS e Windows.
 
-**[English](https://github.com/wachawo/checkcrontab/blob/main/README.md)** | [Español](https://github.com/wachawo/checkcrontab/blob/main/docs/README_ES.md) | [Português](https://github.com/wachawo/checkcrontab/blob/main/docs/README_PT.md) | [Français](https://github.com/wachawo/checkcrontab/blob/main/docs/README_FR.md) | [Deutsch](https://github.com/wachawo/checkcrontab/blob/main/docs/README_DE.md) | **[Italiano](https://github.com/wachawo/checkcrontab/blob/main/docs/README_IT.md)** | [Русский](https://github.com/wachawo/checkcrontab/blob/main/docs/README_RU.md) | [中文](https://github.com/wachawo/checkcrontab/blob/main/docs/README_ZH.md) | [日本語](https://github.com/wachawo/checkcrontab/blob/main/docs/README_JA.md) | [हिन्दी](https://github.com/wachawo/checkcrontab/blob/main/docs/README_HI.md)
+**[English](https://github.com/wachawo/checkcrontab/blob/main/README.md)** | [Español](https://github.com/wachawo/checkcrontab/blob/main/docs/README_ES.md) | [Português](https://github.com/wachawo/checkcrontab/blob/main/docs/README_PT.md) | [Français](https://github.com/wachawo/checkcrontab/blob/main/docs/README_FR.md) | [Deutsch](https://github.com/wachawo/checkcrontab/blob/main/docs/README_DE.md) | **[Italiano](https://github.com/wachawo/checkcrontab/blob/main/docs/README_IT.md)** | [Русский](https://github.com/wachawo/checkcrontab/blob/main/docs/README_RU.md) | [中文](https://github.com/wachawo/checkcrontab/blob/main/docs/README_ZH.md) | [日本語](https://github.com/wachawo/checkcrontab/blob/main/docs/README_JA.md) | [हिन्दी](https://github.com/wachawo/checkcrontab/blob/main/docs/README_HI.md) | [한국어](https://github.com/wachawo/checkcrontab/blob/main/docs/README_KR.md)
 
 ### Requisiti
 
diff --git a/docs/README_JA.md b/docs/README_JA.md
index e63f2e0..afebca4 100644
--- a/docs/README_JA.md
+++ b/docs/README_JA.md
@@ -9,7 +9,7 @@
 
 crontabファイルの構文をチェックするPythonスクリプト。Linux、macOS、Windowsのクロスプラットフォームサポート。
 
-**[English](https://github.com/wachawo/checkcrontab/blob/main/README.md)** | [Español](https://github.com/wachawo/checkcrontab/blob/main/docs/README_ES.md) | [Português](https://github.com/wachawo/checkcrontab/blob/main/docs/README_PT.md) | [Français](https://github.com/wachawo/checkcrontab/blob/main/docs/README_FR.md) | [Deutsch](https://github.com/wachawo/checkcrontab/blob/main/docs/README_DE.md) | [Italiano](https://github.com/wachawo/checkcrontab/blob/main/docs/README_IT.md) | [Русский](https://github.com/wachawo/checkcrontab/blob/main/docs/README_RU.md) | [中文](https://github.com/wachawo/checkcrontab/blob/main/docs/README_ZH.md) | **[日本語](https://github.com/wachawo/checkcrontab/blob/main/docs/README_JA.md)** | [हिन्दी](https://github.com/wachawo/checkcrontab/blob/main/docs/README_HI.md)
+**[English](https://github.com/wachawo/checkcrontab/blob/main/README.md)** | [Español](https://github.com/wachawo/checkcrontab/blob/main/docs/README_ES.md) | [Português](https://github.com/wachawo/checkcrontab/blob/main/docs/README_PT.md) | [Français](https://github.com/wachawo/checkcrontab/blob/main/docs/README_FR.md) | [Deutsch](https://github.com/wachawo/checkcrontab/blob/main/docs/README_DE.md) | [Italiano](https://github.com/wachawo/checkcrontab/blob/main/docs/README_IT.md) | [Русский](https://github.com/wachawo/checkcrontab/blob/main/docs/README_RU.md) | [中文](https://github.com/wachawo/checkcrontab/blob/main/docs/README_ZH.md) | **[日本語](https://github.com/wachawo/checkcrontab/blob/main/docs/README_JA.md)** | [हिन्दी](https://github.com/wachawo/checkcrontab/blob/main/docs/README_HI.md) | [한국어](https://github.com/wachawo/checkcrontab/blob/main/docs/README_KR.md)
 
 ### 要件
 
diff --git a/docs/README_KR.md b/docs/README_KR.md
new file mode 100644
index 0000000..0adc7a8
--- /dev/null
+++ b/docs/README_KR.md
@@ -0,0 +1,226 @@
+## Checkcrontab - 크론탭(crontab) 파일 구문 검사 도구
+
+[![CI](https://github.com/wachawo/checkcrontab/actions/workflows/ci.yml/badge.svg)](https://github.com/wachawo/checkcrontab/actions/workflows/ci.yml)
+[![Coverage](https://codecov.io/gh/wachawo/checkcrontab/branch/main/graph/badge.svg)](https://codecov.io/gh/wachawo/checkcrontab?branch=main)
+[![PyPI](https://img.shields.io/pypi/v/checkcrontab.svg)](https://pypi.org/project/checkcrontab/)
+[![Downloads](https://img.shields.io/pypi/dm/checkcrontab.svg)](https://pypi.org/project/checkcrontab/)
+[![License](https://img.shields.io/badge/license-MIT-blue.svg)](https://github.com/wachawo/checkcrontab/blob/main/LICENSE)
+[![Python](https://img.shields.io/pypi/pyversions/checkcrontab.svg)](https://pypi.org/project/checkcrontab/)
+
+크론탭(crontab) 파일의 구문을 검사하기 위한 Python 스크립트입니다. Linux, macOS 및 Windows를 지원하는 크로스 플랫폼 도구입니다.
+
+**[English](https://github.com/wachawo/checkcrontab/blob/main/README.md)** | [Español](https://github.com/wachawo/checkcrontab/blob/main/docs/README_ES.md) | [Português](https://github.com/wachawo/checkcrontab/blob/main/docs/README_PT.md) | [Français](https://github.com/wachawo/checkcrontab/blob/main/docs/README_FR.md) | [Deutsch](https://github.com/wachawo/checkcrontab/blob/main/docs/README_DE.md) | [Italiano](https://github.com/wachawo/checkcrontab/blob/main/docs/README_IT.md) | [Русский](https://github.com/wachawo/checkcrontab/blob/main/docs/README_RU.md) | [中文](https://github.com/wachawo/checkcrontab/blob/main/docs/README_ZH.md) | [日本語](https://github.com/wachawo/checkcrontab/blob/main/docs/README_JA.md) | [हिन्दी](https://github.com/wachawo/checkcrontab/blob/main/docs/README_HI.md) | **[한국어](https://github.com/wachawo/checkcrontab/blob/main/docs/README_KR.md)**
+
+<img width="1108" height="257" alt="image" src="https://github.com/user-attachments/assets/9ad75b94-3a72-4d0f-b9f4-9e1b22ac475d" />
+
+### 요구 사항
+
+- **Python 3.7 이상**
+- **Linux**: `/etc/crontab` 파일 읽기 권한 및 systemctl이 설치된 Linux 시스템 (데몬 검사용)
+- **macOS**: `/etc/crontab` 파일 읽기 권한이 있는 Unix 시스템 (systemctl 미지원)
+- **Windows**: 추가 요구 사항 없음 (파일 기반 구문 검사만 지원)
+
+### 지원 플랫폼
+
+**Linux (전체 지원):**
+- ✅ 시스템 크론탭 검사 (`/etc/crontab`)
+- ✅ 사용자 크론탭 검사 (`crontab -l -u username` 사용)
+- ✅ 사용자 존재 검사
+- ✅ systemctl을 통한 데몬/서비스 상태 검사
+- ✅ 모든 크론탭 구문 기능 지원
+- ✅ 파일 권한 검사
+- ✅ 크론 데몬 상태 검사
+
+**macOS (부분 지원):**
+- ✅ 시스템 크론탭 검사 (`/etc/crontab`)
+- ✅ 사용자 크론탭 검사 (`crontab -l -u username` 사용)
+- ✅ 사용자 존재 검사
+- ❌ 데몬/서비스 상태 검사 (systemctl 미지원)
+- ✅ 모든 크론탭 구문 기능 지원
+- ✅ 파일 권한 검사
+- ❌ 크론 데몬 상태 검사
+
+**Windows (제한 지원):**
+- ✅ 파일 기반 크론탭 구문 검사
+- ❌ 사용자 존재 검사 (사용자 관리 연동 미지원)
+- ❌ 시스템 크론탭 접근 (`/etc/crontab` 없음)
+- ❌ 데몬/서비스 상태 검사 (systemctl 미지원)
+- ✅ 모든 크론탭 구문 기능 지원
+- ❌ 파일 권한 검사 (Unix 권한 체계 미지원)
+- ❌ 크론 데몬 상태 검사 (크론 데몬 없음)
+
+### 설치 방법
+
+```bash
+pip3 install checkcrontab
+```
+
+또는 GitHub에서 설치:
+
+```bash
+pip3 install git+https://github.com/wachawo/checkcrontab.git
+```
+
+### 사용 방법
+
+```bash
+# 시스템 크론탭 검사 (Linux/macOS 전용)
+checkcrontab
+
+# 크론탭 파일 검사
+checkcrontab /etc/crontab
+
+# 사용자 크론탭 검사 (Linux/macOS 전용)
+checkcrontab username
+
+# 타입 플래그를 지정해 검사
+checkcrontab -S system.cron -U user.cron -u username1 -u username2
+
+# 크론탭 디렉토리 검사
+checkcrontab /etc/cron.d
+
+# 도움말 표시
+checkcrontab --help
+
+# 버전 표시
+checkcrontab --version
+```
+
+**플랫폼별 동작:**
+- **Linux**: 데몬 및 사용자 검사를 포함한 모든 기능 지원
+- **macOS**: 데몬 검사(systemctl 미지원)를 제외한 모든 기능 지원
+- **Windows**: 파일 기반 검사만 지원, 시스템 연동 기능 미지원
+
+### TEXT 출력
+CI 환경 등에서 `STDERR` 출력을 `STDOUT`으로 리디렉션하려면 `--format text` 플래그를 사용하세요:
+
+```bash
+checkcrontab --format text examples/user_valid.txt
+```
+
+#### SARIF 출력
+SARIF 형식으로 출력하려면 `--format sarif` 플래그를 사용하세요:
+
+```bash
+checkcrontab --format sarif examples/user_valid.txt
+```
+
+### JSON 출력
+기계가독형(machine-readable)으로 출력하려면 `--format json` 플래그를 사용하세요:
+
+```bash
+checkcrontab --format json examples/user_valid.txt
+```
+
+JSON 출력 예시:
+
+```json
+{
+  "success": true,
+  "total_files": 2,
+  "total_rows": 27,
+  "total_rows_errors": 0,
+  "total_errors": 0,
+  "files": [
+    {
+      "file": "/etc/crontab",
+      "is_system_crontab": true,
+      "rows": 5,
+      "rows_errors": 0,
+      "errors_count": 0,
+      "errors": [],
+      "success": true
+    },
+    {
+      "file": "examples/user_valid.txt",
+      "is_system_crontab": false,
+      "rows": 22,
+      "rows_errors": 0,
+      "errors_count": 0,
+      "errors": [],
+      "success": true
+    }
+  ]
+}
+```
+
+### 종료 코드
+
+| 코드 | 의미 |
+|------|---------|
+| 0    | 오류 없음 (경고 허용): `--exit-zero` 사용 시 항상 0 반환. |
+| 1    | 문제 발견: 오류가 있거나 `--strict` 설정 시 경고가 있는 경우. |
+| 2    | 런타임/사용 오류: 예기치 않은 실패, 잘못된 명령줄 인자(CLI args) 등. |
+
+### 명령줄 옵션
+
+- `-S, --system` - 시스템 크론탭 파일
+- `-U, --user` - 사용자 크론탭 파일
+- `-u, --username` - 검사할 사용자 이름
+- `-v, --version` - 버전 표시
+- `-d, --debug` - 디버그 출력
+- `-n, --no-colors` - 색상 출력 비활성화
+- `--format {text,json,sarif}` - 출력 형식
+- `--strict` - 경고를 오류로 처리
+- `--exit-zero` - 항상 종료 코드 0 반환
+
+### 주요 기능
+
+- **크로스 플랫폼 구문 검사** (Linux, macOS, Windows)
+- **플랫폼별 특화 기능:**
+  - **Linux/macOS**: 시스템 및 사용자 크론탭 검사, 사용자 존재 검사, 데몬 검사
+  - **Windows**: 파일 기반 검사만 지원
+- **시간 필드 검사** (분, 시, 일, 월, 요일)
+- **위험 명령어 탐지**
+- **특수 키워드 지원** (@reboot, @daily, 등)
+- **다중 행 명령어 지원**
+
+**[Features Documentation](https://github.com/wachawo/checkcrontab/blob/main/docs/FEATURES.md)** - 지원 구문, 유효한 값, 예제 및 오류 메시지에 대한 종합 가이드입니다.
+
+### 개발 도구
+
+```bash
+pip3 install pre-commit flake8 pytest mypy ruff
+pre-commit install
+pre-commit run --all-files
+pre-commit autoupdate
+```
+
+### 테스트
+
+```bash
+pytest --cov=checkcrontab --cov-report=term-missing --cov-report=xml
+coverage report
+# CI에서 자동으로 coverage.xml을 Codecov에 업로드합니다.
+# python -m coverage_badge -o docs/coverage.svg
+```
+
+### pre-commit과 함께 사용하기
+
+프로젝트에서 `checkcrontab`을 pre-commit 훅(hook)으로 사용할 수 있습니다.
+
+1. `.pre-commit-config.yaml` 파일에 다음 내용을 추가하세요:
+
+```yaml
+repos:
+  - repo: https://github.com/wachawo/checkcrontab
+    rev: 0.0.12  # 최신 버전을 사용하세요
+    hooks:
+      - id: checkcrontab
+        files: \.(cron|crontab|tab|conf)$
+        exclude: (\.git|node_modules|__pycache__)/
+        args: [--format, json, --strict]
+```
+
+2. pre-commit 설치:
+
+```bash
+pip install pre-commit
+pre-commit install
+```
+
+3. 이제 훅(hook)이 저장소 내의 모든 `.cron`, `.crontab`, `.tab` 파일을 자동으로 검사합니다.
+
+### 라이선스
+
+MIT License
diff --git a/docs/README_PT.md b/docs/README_PT.md
index 5a05114..f85ff61 100644
--- a/docs/README_PT.md
+++ b/docs/README_PT.md
@@ -9,7 +9,7 @@
 
 Um script em Python para validar a sintaxe de ficheiros crontab. Suporte multiplataforma para Linux, macOS e Windows.
 
-**[English](https://github.com/wachawo/checkcrontab/blob/main/README.md)** | [Español](https://github.com/wachawo/checkcrontab/blob/main/docs/README_ES.md) | **[Português](https://github.com/wachawo/checkcrontab/blob/main/docs/README_PT.md)** | [Français](https://github.com/wachawo/checkcrontab/blob/main/docs/README_FR.md) | [Deutsch](https://github.com/wachawo/checkcrontab/blob/main/docs/README_DE.md) | [Italiano](https://github.com/wachawo/checkcrontab/blob/main/docs/README_IT.md) | [Русский](https://github.com/wachawo/checkcrontab/blob/main/docs/README_RU.md) | [中文](https://github.com/wachawo/checkcrontab/blob/main/docs/README_ZH.md) | [日本語](https://github.com/wachawo/checkcrontab/blob/main/docs/README_JA.md) | [हिन्दी](https://github.com/wachawo/checkcrontab/blob/main/docs/README_HI.md)
+**[English](https://github.com/wachawo/checkcrontab/blob/main/README.md)** | [Español](https://github.com/wachawo/checkcrontab/blob/main/docs/README_ES.md) | **[Português](https://github.com/wachawo/checkcrontab/blob/main/docs/README_PT.md)** | [Français](https://github.com/wachawo/checkcrontab/blob/main/docs/README_FR.md) | [Deutsch](https://github.com/wachawo/checkcrontab/blob/main/docs/README_DE.md) | [Italiano](https://github.com/wachawo/checkcrontab/blob/main/docs/README_IT.md) | [Русский](https://github.com/wachawo/checkcrontab/blob/main/docs/README_RU.md) | [中文](https://github.com/wachawo/checkcrontab/blob/main/docs/README_ZH.md) | [日本語](https://github.com/wachawo/checkcrontab/blob/main/docs/README_JA.md) | [हिन्दी](https://github.com/wachawo/checkcrontab/blob/main/docs/README_HI.md) | [한국어](https://github.com/wachawo/checkcrontab/blob/main/docs/README_KR.md)
 
 ### Requisitos
 
diff --git a/docs/README_RU.md b/docs/README_RU.md
index 574790c..e639364 100644
--- a/docs/README_RU.md
+++ b/docs/README_RU.md
@@ -9,7 +9,7 @@
 
 Python скрипт для проверки синтаксиса crontab файлов. Кроссплатформенная поддержка для Linux, macOS и Windows.
 
-**[English](https://github.com/wachawo/checkcrontab/blob/main/README.md)** | [Español](https://github.com/wachawo/checkcrontab/blob/main/docs/README_ES.md) | [Português](https://github.com/wachawo/checkcrontab/blob/main/docs/README_PT.md) | [Français](https://github.com/wachawo/checkcrontab/blob/main/docs/README_FR.md) | [Deutsch](https://github.com/wachawo/checkcrontab/blob/main/docs/README_DE.md) | [Italiano](https://github.com/wachawo/checkcrontab/blob/main/docs/README_IT.md) | **[Русский](https://github.com/wachawo/checkcrontab/blob/main/docs/README_RU.md)** | [中文](https://github.com/wachawo/checkcrontab/blob/main/docs/README_ZH.md) | [日本語](https://github.com/wachawo/checkcrontab/blob/main/docs/README_JA.md) | [हिन्दी](https://github.com/wachawo/checkcrontab/blob/main/docs/README_HI.md)
+**[English](https://github.com/wachawo/checkcrontab/blob/main/README.md)** | [Español](https://github.com/wachawo/checkcrontab/blob/main/docs/README_ES.md) | [Português](https://github.com/wachawo/checkcrontab/blob/main/docs/README_PT.md) | [Français](https://github.com/wachawo/checkcrontab/blob/main/docs/README_FR.md) | [Deutsch](https://github.com/wachawo/checkcrontab/blob/main/docs/README_DE.md) | [Italiano](https://github.com/wachawo/checkcrontab/blob/main/docs/README_IT.md) | **[Русский](https://github.com/wachawo/checkcrontab/blob/main/docs/README_RU.md)** | [中文](https://github.com/wachawo/checkcrontab/blob/main/docs/README_ZH.md) | [日本語](https://github.com/wachawo/checkcrontab/blob/main/docs/README_JA.md) | [हिन्दी](https://github.com/wachawo/checkcrontab/blob/main/docs/README_HI.md) | [한국어](https://github.com/wachawo/checkcrontab/blob/main/docs/README_KR.md)
 
 ### Требования
 
diff --git a/docs/README_ZH.md b/docs/README_ZH.md
index 71a9e67..1b989d0 100644
--- a/docs/README_ZH.md
+++ b/docs/README_ZH.md
@@ -9,7 +9,7 @@
 
 用于检查 crontab 文件语法的 Python 脚本。支持 Linux、macOS 和 Windows 的跨平台。
 
-**[English](https://github.com/wachawo/checkcrontab/blob/main/README.md)** | [Español](https://github.com/wachawo/checkcrontab/blob/main/docs/README_ES.md) | [Português](https://github.com/wachawo/checkcrontab/blob/main/docs/README_PT.md) | [Français](https://github.com/wachawo/checkcrontab/blob/main/docs/README_FR.md) | [Deutsch](https://github.com/wachawo/checkcrontab/blob/main/docs/README_DE.md) | [Italiano](https://github.com/wachawo/checkcrontab/blob/main/docs/README_IT.md) | [Русский](https://github.com/wachawo/checkcrontab/blob/main/docs/README_RU.md) | **[中文](https://github.com/wachawo/checkcrontab/blob/main/docs/README_ZH.md)** | [日本語](https://github.com/wachawo/checkcrontab/blob/main/docs/README_JA.md) | [हिन्दी](https://github.com/wachawo/checkcrontab/blob/main/docs/README_HI.md)
+**[English](https://github.com/wachawo/checkcrontab/blob/main/README.md)** | [Español](https://github.com/wachawo/checkcrontab/blob/main/docs/README_ES.md) | [Português](https://github.com/wachawo/checkcrontab/blob/main/docs/README_PT.md) | [Français](https://github.com/wachawo/checkcrontab/blob/main/docs/README_FR.md) | [Deutsch](https://github.com/wachawo/checkcrontab/blob/main/docs/README_DE.md) | [Italiano](https://github.com/wachawo/checkcrontab/blob/main/docs/README_IT.md) | [Русский](https://github.com/wachawo/checkcrontab/blob/main/docs/README_RU.md) | **[中文](https://github.com/wachawo/checkcrontab/blob/main/docs/README_ZH.md)** | [日本語](https://github.com/wachawo/checkcrontab/blob/main/docs/README_JA.md) | [हिन्दी](https://github.com/wachawo/checkcrontab/blob/main/docs/README_HI.md) | [한국어](https://github.com/wachawo/checkcrontab/blob/main/docs/README_KR.md)
 
 ### 要求