diff --git a/web/src/components/Memo.tsx b/web/src/components/Memo.tsx
index d6c0e2c8..5844cdaa 100644
--- a/web/src/components/Memo.tsx
+++ b/web/src/components/Memo.tsx
@@ -6,7 +6,6 @@ import { useTranslation } from "react-i18next";
 import { useNavigate } from "react-router-dom";
 import "dayjs/locale/zh";
 import { UNKNOWN_ID } from "../helpers/consts";
-import { DONE_BLOCK_REG, TODO_BLOCK_REG } from "../helpers/marked";
 import { editorStateService, locationService, memoService, userService } from "../services";
 import Icon from "./Icon";
 import toastHelper from "./Toast";
@@ -134,7 +133,7 @@ const Memo: React.FC<Props> = (props: Props) => {
       for (const element of todoElementList) {
         if (element === targetEl) {
           const index = indexOf(todoElementList, element);
-          const tempList = memo.content.split(status === "DONE" ? DONE_BLOCK_REG : TODO_BLOCK_REG);
+          const tempList = memo.content.split(status === "DONE" ? /- \[x\] / : /- \[ \] /);
           let finalContent = "";
 
           for (let i = 0; i < tempList.length; i++) {
diff --git a/web/src/components/MemoCardDialog.tsx b/web/src/components/MemoCardDialog.tsx
index 22674bec..74f2d5d8 100644
--- a/web/src/components/MemoCardDialog.tsx
+++ b/web/src/components/MemoCardDialog.tsx
@@ -4,7 +4,9 @@ import { editorStateService, memoService, userService } from "../services";
 import { useAppSelector } from "../store";
 import { UNKNOWN_ID, VISIBILITY_SELECTOR_ITEMS } from "../helpers/consts";
 import * as utils from "../helpers/utils";
-import { formatMemoContent, MEMO_LINK_REG, parseHtmlToRawText } from "../helpers/marked";
+import { parseHTMLToRawText } from "../helpers/utils";
+import { marked } from "../labs/marked";
+import { MARK_REG } from "../labs/marked/parser";
 import toastHelper from "./Toast";
 import { generateDialog } from "./Dialog";
 import Icon from "./Icon";
@@ -43,7 +45,7 @@ const MemoCardDialog: React.FC<Props> = (props: Props) => {
     const fetchLinkedMemos = async () => {
       try {
         const linkMemos: LinkedMemo[] = [];
-        const matchedArr = [...memo.content.matchAll(MEMO_LINK_REG)];
+        const matchedArr = [...memo.content.matchAll(MARK_REG)];
         for (const matchRes of matchedArr) {
           if (matchRes && matchRes.length === 3) {
             const id = Number(matchRes[2]);
@@ -208,7 +210,7 @@ const MemoCardDialog: React.FC<Props> = (props: Props) => {
         <div className="linked-memos-wrapper">
           <p className="normal-text">{linkMemos.length} related MEMO</p>
           {linkMemos.map((memo, index) => {
-            const rawtext = parseHtmlToRawText(formatMemoContent(memo.content)).replaceAll("\n", " ");
+            const rawtext = parseHTMLToRawText(marked(memo.content)).replaceAll("\n", " ");
             return (
               <div className="linked-memo-container" key={`${index}-${memo.id}`} onClick={() => handleLinkedMemoClick(memo)}>
                 <span className="time-text">{memo.dateStr} </span>
@@ -222,7 +224,7 @@ const MemoCardDialog: React.FC<Props> = (props: Props) => {
         <div className="linked-memos-wrapper">
           <p className="normal-text">{linkedMemos.length} linked MEMO</p>
           {linkedMemos.map((memo, index) => {
-            const rawtext = parseHtmlToRawText(formatMemoContent(memo.content)).replaceAll("\n", " ");
+            const rawtext = parseHTMLToRawText(marked(memo.content)).replaceAll("\n", " ");
             return (
               <div className="linked-memo-container" key={`${index}-${memo.id}`} onClick={() => handleLinkedMemoClick(memo)}>
                 <span className="time-text">{memo.dateStr} </span>
diff --git a/web/src/components/MemoContent.tsx b/web/src/components/MemoContent.tsx
index fca61234..11a963cf 100644
--- a/web/src/components/MemoContent.tsx
+++ b/web/src/components/MemoContent.tsx
@@ -1,5 +1,5 @@
 import { useEffect, useRef, useState } from "react";
-import { formatMemoContent } from "../helpers/marked";
+import { marked } from "../labs/marked";
 import Icon from "./Icon";
 import "../less/memo-content.less";
 
@@ -79,7 +79,7 @@ const MemoContent: React.FC<Props> = (props: Props) => {
         className={`memo-content-text ${state.expandButtonStatus === 0 ? "expanded" : ""}`}
         onClick={handleMemoContentClick}
         onDoubleClick={handleMemoContentDoubleClick}
-        dangerouslySetInnerHTML={{ __html: formatMemoContent(content) }}
+        dangerouslySetInnerHTML={{ __html: marked(content) }}
       ></div>
       {state.expandButtonStatus !== -1 && (
         <div className="expand-btn-container">
diff --git a/web/src/components/MemoList.tsx b/web/src/components/MemoList.tsx
index 54b4f1d6..eaf00af2 100644
--- a/web/src/components/MemoList.tsx
+++ b/web/src/components/MemoList.tsx
@@ -2,7 +2,7 @@ import { useEffect, useRef } from "react";
 import { useTranslation } from "react-i18next";
 import { memoService, shortcutService } from "../services";
 import { useAppSelector } from "../store";
-import { IMAGE_URL_REG, LINK_URL_REG, MEMO_LINK_REG, TAG_REG } from "../helpers/marked";
+import { TAG_REG, LINK_REG } from "../labs/marked/parser";
 import * as utils from "../helpers/utils";
 import { checkShouldShowMemoWithFilters } from "../helpers/filter";
 import toastHelper from "./Toast";
@@ -57,11 +57,7 @@ const MemoList = () => {
           if (memoType) {
             if (memoType === "NOT_TAGGED" && memo.content.match(TAG_REG) !== null) {
               shouldShow = false;
-            } else if (memoType === "LINKED" && memo.content.match(LINK_URL_REG) === null) {
-              shouldShow = false;
-            } else if (memoType === "IMAGED" && memo.content.match(IMAGE_URL_REG) === null) {
-              shouldShow = false;
-            } else if (memoType === "CONNECTED" && memo.content.match(MEMO_LINK_REG) === null) {
+            } else if (memoType === "LINKED" && memo.content.match(LINK_REG) === null) {
               shouldShow = false;
             }
           }
diff --git a/web/src/helpers/filter.ts b/web/src/helpers/filter.ts
index 13bcb469..7865d938 100644
--- a/web/src/helpers/filter.ts
+++ b/web/src/helpers/filter.ts
@@ -1,4 +1,4 @@
-import { IMAGE_URL_REG, LINK_URL_REG, MEMO_LINK_REG, TAG_REG } from "./marked";
+import { TAG_REG, LINK_REG } from "../labs/marked/parser";
 
 export const relationConsts = [
   { text: "And", value: "AND" },
@@ -34,10 +34,6 @@ export const filterConsts = {
       },
     ],
     values: [
-      {
-        text: "Connected",
-        value: "CONNECTED",
-      },
       {
         text: "No tags",
         value: "NOT_TAGGED",
@@ -46,10 +42,6 @@ export const filterConsts = {
         text: "Has links",
         value: "LINKED",
       },
-      {
-        text: "Has images",
-        value: "IMAGED",
-      },
     ],
   },
   TEXT: {
@@ -142,11 +134,7 @@ export const checkShouldShowMemo = (memo: Memo, filter: Filter) => {
     let matched = false;
     if (value === "NOT_TAGGED" && memo.content.match(TAG_REG) === null) {
       matched = true;
-    } else if (value === "LINKED" && memo.content.match(LINK_URL_REG) !== null) {
-      matched = true;
-    } else if (value === "IMAGED" && memo.content.match(IMAGE_URL_REG) !== null) {
-      matched = true;
-    } else if (value === "CONNECTED" && memo.content.match(MEMO_LINK_REG) !== null) {
+    } else if (value === "LINKED" && memo.content.match(LINK_REG) !== null) {
       matched = true;
     }
     if (operator === "IS_NOT") {
diff --git a/web/src/helpers/marked.ts b/web/src/helpers/marked.ts
deleted file mode 100644
index 63bfed1c..00000000
--- a/web/src/helpers/marked.ts
+++ /dev/null
@@ -1,50 +0,0 @@
-import { escape } from "lodash-es";
-
-const CODE_BLOCK_REG = /```([\s\S]*?)```\n?/g;
-const BOLD_TEXT_REG = /\*\*(.+?)\*\*/g;
-const EM_TEXT_REG = /\*(.+?)\*/g;
-const DOT_LI_REG = /[*-] /g;
-const NUM_LI_REG = /(\d+)\. /g;
-export const TODO_BLOCK_REG = /- \[ \] /g;
-export const DONE_BLOCK_REG = /- \[x\] /g;
-// tag regex
-export const TAG_REG = /#([^\s#]+?) /g;
-// markdown image regex
-export const IMAGE_URL_REG = /!\[.*?\]\((.+?)\)\n?/g;
-// markdown link regex
-export const LINK_URL_REG = /\[(.*?)\]\((.+?)\)/g;
-// linked memo regex
-export const MEMO_LINK_REG = /@\[(.+?)\]\((.+?)\)/g;
-
-const parseMarkedToHtml = (markedStr: string): string => {
-  const htmlText = markedStr
-    .replace(CODE_BLOCK_REG, "<pre lang=''>$1</pre>")
-    .replace(TODO_BLOCK_REG, "<span class='todo-block todo' data-value='TODO'></span>")
-    .replace(DONE_BLOCK_REG, "<span class='todo-block done' data-value='DONE'>✓</span>")
-    .replace(DOT_LI_REG, "<span class='counter-block'>•</span>")
-    .replace(NUM_LI_REG, "<span class='counter-block'>$1.</span>")
-    .replace(BOLD_TEXT_REG, "<strong>$1</strong>")
-    .replace(EM_TEXT_REG, "<em>$1</em>");
-  return htmlText;
-};
-
-const parseHtmlToRawText = (htmlStr: string): string => {
-  const tempEl = document.createElement("div");
-  tempEl.className = "memo-content-text";
-  tempEl.innerHTML = htmlStr;
-  const text = tempEl.innerText;
-  return text;
-};
-
-const formatMemoContent = (content: string) => {
-  const tempElement = document.createElement("div");
-  tempElement.innerHTML = parseMarkedToHtml(escape(content));
-
-  return tempElement.innerHTML
-    .replace(IMAGE_URL_REG, "<img class='img' src='$1' />")
-    .replace(MEMO_LINK_REG, "<span class='memo-link-text' data-value='$2'>$1</span>")
-    .replace(LINK_URL_REG, "<a class='link' target='_blank' rel='noreferrer' href='$2'>$1</a>")
-    .replace(TAG_REG, "<span class='tag-span'>#$1</span> ");
-};
-
-export { formatMemoContent, parseHtmlToRawText };
diff --git a/web/src/helpers/utils.ts b/web/src/helpers/utils.ts
index b28a8b1d..86541e1c 100644
--- a/web/src/helpers/utils.ts
+++ b/web/src/helpers/utils.ts
@@ -80,102 +80,6 @@ export function getDateTimeString(t: Date | number | string): string {
   return `${year}/${monthStr}/${dateStr} ${hoursStr}:${minsStr}:${secsStr}`;
 }
 
-export function dedupe<T>(data: T[]): T[] {
-  return Array.from(new Set(data));
-}
-
-export function dedupeObjectWithId<T extends { id: string | number }>(data: T[]): T[] {
-  const idSet = new Set<string | number>();
-  const result = [];
-
-  for (const d of data) {
-    if (!idSet.has(d.id)) {
-      idSet.add(d.id);
-      result.push(d);
-    }
-  }
-
-  return result;
-}
-
-export function debounce(fn: FunctionType, delay: number) {
-  let timer: number | null = null;
-
-  return () => {
-    if (timer) {
-      clearTimeout(timer);
-      timer = setTimeout(fn, delay);
-    } else {
-      timer = setTimeout(fn, delay);
-    }
-  };
-}
-
-export function throttle(fn: FunctionType, delay: number) {
-  let valid = true;
-
-  return () => {
-    if (!valid) {
-      return false;
-    }
-    valid = false;
-    setTimeout(() => {
-      fn();
-      valid = true;
-    }, delay);
-  };
-}
-
-export function filterObjectNullKeys(object: KVObject): KVObject {
-  if (!object) {
-    return {};
-  }
-
-  const finalObject: KVObject = {};
-  const keys = Object.keys(object).sort();
-
-  for (const key of keys) {
-    const val = object[key];
-    if (typeof val === "object") {
-      const temp = filterObjectNullKeys(JSON.parse(JSON.stringify(val)));
-      if (temp && Object.keys(temp).length > 0) {
-        finalObject[key] = temp;
-      }
-    } else {
-      if (val) {
-        finalObject[key] = val;
-      }
-    }
-  }
-
-  return finalObject;
-}
-
-export function getImageSize(src: string): Promise<{ width: number; height: number }> {
-  return new Promise((resolve) => {
-    const imgEl = new Image();
-
-    imgEl.onload = () => {
-      const { width, height } = imgEl;
-
-      if (width > 0 && height > 0) {
-        resolve({ width, height });
-      } else {
-        resolve({ width: 0, height: 0 });
-      }
-    };
-
-    imgEl.onerror = () => {
-      resolve({ width: 0, height: 0 });
-    };
-
-    imgEl.className = "hidden";
-    imgEl.src = src;
-    document.body.appendChild(imgEl);
-    imgEl.remove();
-  });
-}
-
 export const getElementBounding = (element: HTMLElement, relativeEl?: HTMLElement) => {
   const scrollTop = window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop;
   const scrollLeft = window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft;
@@ -224,3 +128,11 @@ export const getElementBounding = (element: HTMLElement, relativeEl?: HTMLElemen
     left: elementRect.left + scrollLeft,
   });
 };
+
+export const parseHTMLToRawText = (htmlStr: string): string => {
+  const tempEl = document.createElement("div");
+  tempEl.className = "memo-content-text";
+  tempEl.innerHTML = htmlStr;
+  const text = tempEl.innerText;
+  return text;
+};
diff --git a/web/src/labs/marked/index.ts b/web/src/labs/marked/index.ts
new file mode 100644
index 00000000..f2f58acf
--- /dev/null
+++ b/web/src/labs/marked/index.ts
@@ -0,0 +1,18 @@
+import { parserList } from "./parser";
+
+export const marked = (markdownStr: string, parsers = parserList) => {
+  for (const parser of parsers) {
+    const startIndex = markdownStr.search(parser.regex);
+    const matchedLength = parser.match(markdownStr);
+
+    if (startIndex > -1 && matchedLength > 0) {
+      const prefixStr = markdownStr.slice(0, startIndex);
+      const matchedStr = markdownStr.slice(startIndex, startIndex + matchedLength);
+      const suffixStr = markdownStr.slice(startIndex + matchedLength);
+      markdownStr = marked(prefixStr, parsers) + parser.renderer(matchedStr) + marked(suffixStr, parsers);
+      break;
+    }
+  }
+
+  return markdownStr;
+};
diff --git a/web/src/labs/marked/marked.test.ts b/web/src/labs/marked/marked.test.ts
new file mode 100644
index 00000000..a15499b6
--- /dev/null
+++ b/web/src/labs/marked/marked.test.ts
@@ -0,0 +1,89 @@
+import { describe, expect, test } from "@jest/globals";
+import { marked } from ".";
+
+describe("test marked parser", () => {
+  test("parse code block", () => {
+    const tests = [
+      {
+        markdown: `\`\`\`
+hello world!
+\`\`\``,
+        want: `<pre lang=''>
+hello world!
+</pre>`,
+      },
+      {
+        markdown: `test code block
+
+\`\`\`js
+console.log("hello world!")
+\`\`\``,
+        want: `<p>test code block</p>
+<p></p>
+<pre lang='js'>
+console.log("hello world!")
+</pre>`,
+      },
+    ];
+
+    for (const t of tests) {
+      expect(marked(t.markdown)).toBe(t.want);
+    }
+  });
+  test("parse todo list block", () => {
+    const tests = [
+      {
+        markdown: `My task:
+- [ ] finish my homework
+- [x] yahaha`,
+        want: `<p>My task:</p>
+<p><span class='todo-block todo' data-value='TODO'></span>finish my homework</p>
+<p><span class='todo-block done' data-value='DONE'>✓</span>yahaha</p>`,
+      },
+    ];
+
+    for (const t of tests) {
+      expect(marked(t.markdown)).toBe(t.want);
+    }
+  });
+  test("parse list block", () => {
+    const tests = [
+      {
+        markdown: `This is a list
+* list 123
+1. 123123`,
+        want: `<p>This is a list</p>
+<p><span class='ul-block'>•</span>list 123</p>
+<p><span class='ol-block'>1.</span>123123</p>`,
+      },
+    ];
+
+    for (const t of tests) {
+      expect(marked(t.markdown)).toBe(t.want);
+    }
+  });
+  test("parse inline element", () => {
+    const tests = [
+      {
+        markdown: `Link: [baidu](https://baidu.com)`,
+        want: `<p>Link: <a class='link' target='_blank' rel='noreferrer' href='https://baidu.com'>baidu</a></p>`,
+      },
+    ];
+
+    for (const t of tests) {
+      expect(marked(t.markdown)).toBe(t.want);
+    }
+  });
+  test("parse plain link", () => {
+    const tests = [
+      {
+        markdown: `Link:https://baidu.com`,
+        want: `<p>Link:<a class='link' target='_blank' rel='noreferrer' href='https://baidu.com'>https://baidu.com</a></p>`,
+      },
+    ];
+
+    for (const t of tests) {
+      expect(marked(t.markdown)).toBe(t.want);
+    }
+  });
+});
diff --git a/web/src/labs/marked/parser/Bold.ts b/web/src/labs/marked/parser/Bold.ts
new file mode 100644
index 00000000..3f0c531c
--- /dev/null
+++ b/web/src/labs/marked/parser/Bold.ts
@@ -0,0 +1,23 @@
+export const BOLD_REG = /\*\*([\S ]+?)\*\*/;
+
+const match = (rawStr: string): number => {
+  const matchResult = rawStr.match(BOLD_REG);
+  if (!matchResult) {
+    return 0;
+  }
+
+  const matchStr = matchResult[0];
+  return matchStr.length;
+};
+
+const renderer = (rawStr: string): string => {
+  const parsedStr = rawStr.replace(BOLD_REG, "<strong>$1</strong>");
+  return parsedStr;
+};
+
+export default {
+  name: "bold",
+  regex: BOLD_REG,
+  match,
+  renderer,
+};
diff --git a/web/src/labs/marked/parser/CodeBlock.ts b/web/src/labs/marked/parser/CodeBlock.ts
new file mode 100644
index 00000000..4f5f731b
--- /dev/null
+++ b/web/src/labs/marked/parser/CodeBlock.ts
@@ -0,0 +1,23 @@
+export const CODE_BLOCK_REG = /^```(\S*?)\s([\s\S]*?)```(\n?)/;
+
+const match = (rawStr: string): number => {
+  const matchResult = rawStr.match(CODE_BLOCK_REG);
+  if (!matchResult) {
+    return 0;
+  }
+
+  const matchStr = matchResult[0];
+  return matchStr.length;
+};
+
+const renderer = (rawStr: string): string => {
+  const parsedStr = rawStr.replace(CODE_BLOCK_REG, "<pre lang='$1'>\n$2</pre>$3");
+  return parsedStr;
+};
+
+export default {
+  name: "code block",
+  regex: CODE_BLOCK_REG,
+  match,
+  renderer,
+};
diff --git a/web/src/labs/marked/parser/DoneList.ts b/web/src/labs/marked/parser/DoneList.ts
new file mode 100644
index 00000000..10f3783c
--- /dev/null
+++ b/web/src/labs/marked/parser/DoneList.ts
@@ -0,0 +1,31 @@
+import { inlineElementParserList } from ".";
+import { marked } from "..";
+
+export const DONE_LIST_REG = /^- \[x\] ([\S ]+)(\n?)/;
+
+const match = (rawStr: string): number => {
+  const matchResult = rawStr.match(DONE_LIST_REG);
+  if (!matchResult) {
+    return 0;
+  }
+
+  const matchStr = matchResult[0];
+  return matchStr.length;
+};
+
+const renderer = (rawStr: string): string => {
+  const matchResult = rawStr.match(DONE_LIST_REG);
+  if (!matchResult) {
+    return rawStr;
+  }
+
+  const parsedContent = marked(matchResult[1], inlineElementParserList);
+  return `<p><span class='todo-block done' data-value='DONE'>✓</span>${parsedContent}</p>${matchResult[2]}`;
+};
+
+export default {
+  name: "done list",
+  regex: DONE_LIST_REG,
+  match,
+  renderer,
+};
diff --git a/web/src/labs/marked/parser/Emphasis.ts b/web/src/labs/marked/parser/Emphasis.ts
new file mode 100644
index 00000000..d749dcd1
--- /dev/null
+++ b/web/src/labs/marked/parser/Emphasis.ts
@@ -0,0 +1,23 @@
+export const EMPHASIS_REG = /\*([\S ]+?)\*/;
+
+const match = (rawStr: string): number => {
+  const matchResult = rawStr.match(EMPHASIS_REG);
+  if (!matchResult) {
+    return 0;
+  }
+
+  const matchStr = matchResult[0];
+  return matchStr.length;
+};
+
+const renderer = (rawStr: string): string => {
+  const parsedStr = rawStr.replace(EMPHASIS_REG, "<em>$1</em>");
+  return parsedStr;
+};
+
+export default {
+  name: "emphasis",
+  regex: EMPHASIS_REG,
+  match,
+  renderer,
+};
diff --git a/web/src/labs/marked/parser/Image.ts b/web/src/labs/marked/parser/Image.ts
new file mode 100644
index 00000000..30959835
--- /dev/null
+++ b/web/src/labs/marked/parser/Image.ts
@@ -0,0 +1,23 @@
+export const IMAGE_REG = /!\[.*?\]\((.+?)\)/;
+
+const match = (rawStr: string): number => {
+  const matchResult = rawStr.match(IMAGE_REG);
+  if (!matchResult) {
+    return 0;
+  }
+
+  const matchStr = matchResult[0];
+  return matchStr.length;
+};
+
+const renderer = (rawStr: string): string => {
+  const parsedStr = rawStr.replace(IMAGE_REG, "<img class='img' src='$1' />");
+  return parsedStr;
+};
+
+export default {
+  name: "image",
+  regex: IMAGE_REG,
+  match,
+  renderer,
+};
diff --git a/web/src/labs/marked/parser/Link.ts b/web/src/labs/marked/parser/Link.ts
new file mode 100644
index 00000000..a0599d82
--- /dev/null
+++ b/web/src/labs/marked/parser/Link.ts
@@ -0,0 +1,23 @@
+export const LINK_REG = /\[(.*?)\]\((.+?)\)/;
+
+const match = (rawStr: string): number => {
+  const matchResult = rawStr.match(LINK_REG);
+  if (!matchResult) {
+    return 0;
+  }
+
+  const matchStr = matchResult[0];
+  return matchStr.length;
+};
+
+const renderer = (rawStr: string): string => {
+  const parsedStr = rawStr.replace(LINK_REG, "<a class='link' target='_blank' rel='noreferrer' href='$2'>$1</a>");
+  return parsedStr;
+};
+
+export default {
+  name: "link",
+  regex: LINK_REG,
+  match,
+  renderer,
+};
diff --git a/web/src/labs/marked/parser/Mark.ts b/web/src/labs/marked/parser/Mark.ts
new file mode 100644
index 00000000..9dbd3a4b
--- /dev/null
+++ b/web/src/labs/marked/parser/Mark.ts
@@ -0,0 +1,23 @@
+export const MARK_REG = /@\[([\S ]+?)\]\((\S+?)\)/;
+
+const match = (rawStr: string): number => {
+  const matchResult = rawStr.match(MARK_REG);
+  if (!matchResult) {
+    return 0;
+  }
+
+  const matchStr = matchResult[0];
+  return matchStr.length;
+};
+
+const renderer = (rawStr: string): string => {
+  const parsedStr = rawStr.replace(MARK_REG, "<span class='memo-link-text' data-value='$2'>$1</span>");
+  return parsedStr;
+};
+
+export default {
+  name: "mark",
+  regex: MARK_REG,
+  match,
+  renderer,
+};
diff --git a/web/src/labs/marked/parser/OrderedList.ts b/web/src/labs/marked/parser/OrderedList.ts
new file mode 100644
index 00000000..fe42ff9d
--- /dev/null
+++ b/web/src/labs/marked/parser/OrderedList.ts
@@ -0,0 +1,31 @@
+import { inlineElementParserList } from ".";
+import { marked } from "..";
+
+export const ORDERED_LIST_REG = /^(\d+)\. ([\S ]+)(\n?)/;
+
+const match = (rawStr: string): number => {
+  const matchResult = rawStr.match(ORDERED_LIST_REG);
+  if (!matchResult) {
+    return 0;
+  }
+
+  const matchStr = matchResult[0];
+  return matchStr.length;
+};
+
+const renderer = (rawStr: string): string => {
+  const matchResult = rawStr.match(ORDERED_LIST_REG);
+  if (!matchResult) {
+    return rawStr;
+  }
+
+  const parsedContent = marked(matchResult[2], inlineElementParserList);
+  return `<p><span class='ol-block'>${matchResult[1]}.</span>${parsedContent}</p>${matchResult[3]}`;
+};
+
+export default {
+  name: "ordered list",
+  regex: ORDERED_LIST_REG,
+  match,
+  renderer,
+};
diff --git a/web/src/labs/marked/parser/Paragraph.ts b/web/src/labs/marked/parser/Paragraph.ts
new file mode 100644
index 00000000..d85558b0
--- /dev/null
+++ b/web/src/labs/marked/parser/Paragraph.ts
@@ -0,0 +1,31 @@
+import { inlineElementParserList } from ".";
+import { marked } from "..";
+
+export const PARAGRAPH_REG = /^([\S ]*)(\n?)/;
+
+const match = (rawStr: string): number => {
+  const matchResult = rawStr.match(PARAGRAPH_REG);
+  if (!matchResult) {
+    return 0;
+  }
+
+  const matchStr = matchResult[0];
+  return matchStr.length;
+};
+
+const renderer = (rawStr: string): string => {
+  const matchResult = rawStr.match(PARAGRAPH_REG);
+  if (!matchResult) {
+    return rawStr;
+  }
+
+  const parsedContent = marked(matchResult[1], inlineElementParserList);
+  return `<p>${parsedContent}</p>${matchResult[2]}`;
+};
+
+export default {
+  name: "ordered list",
+  regex: PARAGRAPH_REG,
+  match,
+  renderer,
+};
diff --git a/web/src/labs/marked/parser/PlainLink.ts b/web/src/labs/marked/parser/PlainLink.ts
new file mode 100644
index 00000000..b30f0d47
--- /dev/null
+++ b/web/src/labs/marked/parser/PlainLink.ts
@@ -0,0 +1,23 @@
+export const PLAIN_LINK_REG = /(https?:\/\/[^ ]+)/;
+
+const match = (rawStr: string): number => {
+  const matchResult = rawStr.match(PLAIN_LINK_REG);
+  if (!matchResult) {
+    return 0;
+  }
+
+  const matchStr = matchResult[0];
+  return matchStr.length;
+};
+
+const renderer = (rawStr: string): string => {
+  const parsedStr = rawStr.replace(PLAIN_LINK_REG, "<a class='link' target='_blank' rel='noreferrer' href='$1'>$1</a>");
+  return parsedStr;
+};
+
+export default {
+  name: "plain link",
+  regex: PLAIN_LINK_REG,
+  match,
+  renderer,
+};
diff --git a/web/src/labs/marked/parser/Tag.ts b/web/src/labs/marked/parser/Tag.ts
new file mode 100644
index 00000000..f4fbc933
--- /dev/null
+++ b/web/src/labs/marked/parser/Tag.ts
@@ -0,0 +1,23 @@
+export const TAG_REG = /#([^\s#]+?) /;
+
+const match = (rawStr: string): number => {
+  const matchResult = rawStr.match(TAG_REG);
+  if (!matchResult) {
+    return 0;
+  }
+
+  const matchStr = matchResult[0];
+  return matchStr.length;
+};
+
+const renderer = (rawStr: string): string => {
+  const parsedStr = rawStr.replace(TAG_REG, "<span class='tag-span'>#$1</span> ");
+  return parsedStr;
+};
+
+export default {
+  name: "tag",
+  regex: TAG_REG,
+  match,
+  renderer,
+};
diff --git a/web/src/labs/marked/parser/TodoList.ts b/web/src/labs/marked/parser/TodoList.ts
new file mode 100644
index 00000000..541b2abb
--- /dev/null
+++ b/web/src/labs/marked/parser/TodoList.ts
@@ -0,0 +1,31 @@
+import { inlineElementParserList } from ".";
+import { marked } from "..";
+
+export const TODO_LIST_REG = /^- \[ \] ([\S ]+)(\n?)/;
+
+const match = (rawStr: string): number => {
+  const matchResult = rawStr.match(TODO_LIST_REG);
+  if (!matchResult) {
+    return 0;
+  }
+
+  const matchStr = matchResult[0];
+  return matchStr.length;
+};
+
+const renderer = (rawStr: string): string => {
+  const matchResult = rawStr.match(TODO_LIST_REG);
+  if (!matchResult) {
+    return rawStr;
+  }
+
+  const parsedContent = marked(matchResult[1], inlineElementParserList);
+  return `<p><span class='todo-block todo' data-value='TODO'></span>${parsedContent}</p>${matchResult[2]}`;
+};
+
+export default {
+  name: "todo list",
+  regex: TODO_LIST_REG,
+  match,
+  renderer,
+};
diff --git a/web/src/labs/marked/parser/UnorderedList.ts b/web/src/labs/marked/parser/UnorderedList.ts
new file mode 100644
index 00000000..59f87cb8
--- /dev/null
+++ b/web/src/labs/marked/parser/UnorderedList.ts
@@ -0,0 +1,31 @@
+import { inlineElementParserList } from ".";
+import { marked } from "..";
+
+export const UNORDERED_LIST_REG = /^[*-] ([\S ]+)(\n?)/;
+
+const match = (rawStr: string): number => {
+  const matchResult = rawStr.match(UNORDERED_LIST_REG);
+  if (!matchResult) {
+    return 0;
+  }
+
+  const matchStr = matchResult[0];
+  return matchStr.length;
+};
+
+const renderer = (rawStr: string): string => {
+  const matchResult = rawStr.match(UNORDERED_LIST_REG);
+  if (!matchResult) {
+    return rawStr;
+  }
+
+  const parsedContent = marked(matchResult[1], inlineElementParserList);
+  return `<p><span class='ul-block'>•</span>${parsedContent}</p>${matchResult[2]}`;
+};
+
+export default {
+  name: "unordered list",
+  regex: UNORDERED_LIST_REG,
+  match,
+  renderer,
+};
diff --git a/web/src/labs/marked/parser/index.ts b/web/src/labs/marked/parser/index.ts
new file mode 100644
index 00000000..cff22365
--- /dev/null
+++ b/web/src/labs/marked/parser/index.ts
@@ -0,0 +1,31 @@
+import CodeBlock from "./CodeBlock";
+import TodoList from "./TodoList";
+import DoneList from "./DoneList";
+import OrderedList from "./OrderedList";
+import UnorderedList from "./UnorderedList";
+import Paragraph from "./Paragraph";
+import Tag from "./Tag";
+import Image from "./Image";
+import Link from "./Link";
+import Mark from "./Mark";
+import Bold from "./Bold";
+import Emphasis from "./Emphasis";
+import PlainLink from "./PlainLink";
+
+export { CODE_BLOCK_REG } from "./CodeBlock";
+export { TODO_LIST_REG } from "./TodoList";
+export { DONE_LIST_REG } from "./DoneList";
+export { ORDERED_LIST_REG } from "./OrderedList";
+export { UNORDERED_LIST_REG } from "./UnorderedList";
+export { PARAGRAPH_REG } from "./Paragraph";
+export { TAG_REG } from "./Tag";
+export { IMAGE_REG } from "./Image";
+export { LINK_REG } from "./Link";
+export { MARK_REG } from "./Mark";
+export { BOLD_REG } from "./Bold";
+export { EMPHASIS_REG } from "./Emphasis";
+
+// The order determines the order of execution.
+export const blockElementParserList = [CodeBlock, TodoList, DoneList, OrderedList, UnorderedList, Paragraph];
+export const inlineElementParserList = [Image, Mark, Link, Bold, Emphasis, Tag, PlainLink];
+export const parserList = [...blockElementParserList, ...inlineElementParserList];
diff --git a/web/src/less/daily-memo.less b/web/src/less/daily-memo.less
index 54eacf4d..5d385944 100644
--- a/web/src/less/daily-memo.less
+++ b/web/src/less/daily-memo.less
@@ -20,8 +20,8 @@
   > .memo-container {
     @apply w-full overflow-x-hidden flex flex-col justify-start items-start;
 
-    > .memo-content-container {
-      @apply flex flex-col justify-start items-start w-full overflow-x-hidden p-0 text-base;
+    .memo-content-text {
+      margin-top: 3px;
     }
   }
 }
diff --git a/web/src/less/memo-content.less b/web/src/less/memo-content.less
index ab71b1d9..6f55ac71 100644
--- a/web/src/less/memo-content.less
+++ b/web/src/less/memo-content.less
@@ -4,7 +4,7 @@
   @apply w-full flex flex-col justify-start items-start;
 
   > .memo-content-text {
-    @apply w-full whitespace-pre-wrap break-words text-base leading-7;
+    @apply w-full break-words text-base leading-7;
 
     &.expanded {
       display: -webkit-box;
@@ -14,7 +14,8 @@
     }
 
     > p {
-      @apply inline-block w-full h-auto mb-1 last:mb-0 text-base leading-7 whitespace-pre-wrap break-words;
+      @apply w-full h-auto mb-1 last:mb-0 text-base leading-6 whitespace-pre-wrap break-words;
+      min-height: 24px;
     }
 
     .img {
@@ -30,7 +31,7 @@
     }
 
     .link {
-      @apply inline-block text-blue-600 cursor-pointer underline break-all hover:opacity-80;
+      @apply text-blue-600 cursor-pointer underline break-all hover:opacity-80;
     }
 
     .counter-block,