diff --git a/Note/FormatNoteViewController.swift b/Note/FormatNoteViewController.swift
index 78bdc80..dfa2168 100644
--- a/Note/FormatNoteViewController.swift
+++ b/Note/FormatNoteViewController.swift
@@ -121,14 +121,99 @@ class FormatNoteViewController: UIViewController {
     }
 
     @objc private func didTapiCloudButton() {
+        textView.text = formatForCloud(textView.text)
         rightBarButtonMode = .reset
         updateRightBarButtonItem()
     }
 
     @objc private func didTapNoteButton() {
+        textView.text = formatForNote(textView.text)
         rightBarButtonMode = .reset
         updateRightBarButtonItem()
     }
+
+    private func formatForCloud(_ text: String) -> String {
+        var content = text
+        content = content.replacingOccurrences(of: " ", with: "")
+        content = content.replacingOccurrences(of: "　", with: "")
+        content = content.replacingOccurrences(of: "\u{00A0}", with: "")
+        content = content.replacingOccurrences(of: "# ", with: "")
+        content = content.replacingOccurrences(of: "#", with: "")
+        content = content.replacingOccurrences(of: "！", with: "。")
+        content = content.replacingOccurrences(of: "!", with: "。")
+        content = content.replacingOccurrences(of: ";", with: "。")
+        content = content.replacingOccurrences(of: "；", with: "。")
+        content = content.replacingOccurrences(of: ".", with: "。")
+        content = content.replacingOccurrences(of: "（", with: "(")
+        content = content.replacingOccurrences(of: "）", with: ")")
+        content = content.replacingOccurrences(of: "?", with: "？")
+        content = content.replacingOccurrences(of: ",", with: "，")
+        content = content.replacingOccurrences(of: ":", with: "：")
+
+        let numberReplacements: [(String, String)] = [
+            ("20、", "二十、"), ("19、", "十九、"), ("18、", "十八、"), ("17、", "十七、"),
+            ("16、", "十六、"), ("15、", "十五、"), ("14、", "十四、"), ("13、", "十三、"),
+            ("12、", "十二、"), ("11、", "十一、"), ("10、", "十、"),
+            ("9、", "九、"), ("8、", "八、"), ("7、", "七、"), ("6、", "六、"),
+            ("5、", "五、"), ("4、", "四、"), ("3、", "三、"), ("2、", "二、"), ("1、", "一、")
+        ]
+        for (old, new) in numberReplacements {
+            content = content.replacingOccurrences(of: old, with: new)
+        }
+
+        content = content.replacingOccurrences(of: "。", with: "。\n")
+        content = content.replacingOccurrences(of: "？", with: "？\n")
+        content = removeEmptyLines(content)
+        content = content.replacingOccurrences(of: "：\\s*", with: "：\n\n", options: .regularExpression)
+        content = content.replacingOccurrences(of: "。", with: "。\n")
+        content = content.replacingOccurrences(of: "？", with: "？\n")
+        content = content.replacingOccurrences(of: "：\n\n", with: "：")
+        content = content.replacingOccurrences(of: "：一、", with: "：\n\n一、")
+        content = content.replacingOccurrences(of: " ", with: "")
+        content = content.replacingOccurrences(of: "---", with: "---\n")
+        content = content.replacingOccurrences(of: "日星期", with: "日 星期")
+        content = "# " + content
+        content = insertEmptyLineAfterFirstLine(content)
+        return content
+    }
+
+    private func formatForNote(_ text: String) -> String {
+        var content = text
+        content = content.replacingOccurrences(of: " ", with: "")
+        content = content.replacingOccurrences(of: "# ", with: "")
+        content = content.replacingOccurrences(of: "#", with: "")
+        content = content.replacingOccurrences(of: "！", with: "。")
+        content = content.replacingOccurrences(of: "!", with: "。")
+        content = content.replacingOccurrences(of: ";", with: "。")
+        content = content.replacingOccurrences(of: "；", with: "。")
+        content = content.replacingOccurrences(of: ".", with: "。")
+        content = content.replacingOccurrences(of: "（", with: "(")
+        content = content.replacingOccurrences(of: "）", with: ")")
+        content = content.replacingOccurrences(of: "?", with: "？")
+        content = content.replacingOccurrences(of: ",", with: "，")
+        content = content.replacingOccurrences(of: ":", with: "：")
+        content = content.replacingOccurrences(of: "。", with: "。\n")
+        content = content.replacingOccurrences(of: "？", with: "？\n")
+        content = removeEmptyLines(content)
+        content = content.replacingOccurrences(of: "---", with: "")
+        content = content.replacingOccurrences(of: "日星期", with: "日 星期")
+        content = insertEmptyLineAfterFirstLine(content)
+        return content
+    }
+
+    private func removeEmptyLines(_ text: String) -> String {
+        let lines = text.components(separatedBy: .newlines)
+        let nonEmptyLines = lines.filter { !$0.trimmingCharacters(in: .whitespaces).isEmpty }
+        return nonEmptyLines.joined(separator: "\n")
+    }
+
+    private func insertEmptyLineAfterFirstLine(_ text: String) -> String {
+        var lines = text.components(separatedBy: .newlines)
+        if !lines.isEmpty {
+            lines.insert("", at: 1)
+        }
+        return lines.joined(separator: "\n")
+    }
 }
 
 extension FormatNoteViewController: UITextViewDelegate {