diff --git a/package.json b/package.json
index ca609f7..6e16bdb 100644
--- a/package.json
+++ b/package.json
@@ -13,10 +13,24 @@
     "format": "prettier --write \"**/*.{js,jsx,ts,tsx,json,md}\"",
     "format:check": "prettier --check \"**/*.{js,jsx,ts,tsx,json,md}\""
   },
-  "keywords": [],
+  "keywords": [
+    "stripe",
+    "documentation",
+    "loader",
+    "langchain",
+    "sitemap"
+  ],
   "author": "hideokamoto",
-  "license": "ISC",
-  "description": "",
+  "license": "MIT",
+  "description": "A collection of utility libraries for easily retrieving and processing Stripe data",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/wpkyoto/stripe-docs-loader"
+  },
+  "bugs": {
+    "url": "https://github.com/wpkyoto/stripe-docs-loader/issues"
+  },
+  "homepage": "https://github.com/wpkyoto/stripe-docs-loader#readme",
   "devDependencies": {
     "@types/node": "^22.13.10",
     "prettier": "^3.2.5",
diff --git a/packages/core/package.json b/packages/core/package.json
index 59e172f..a04141e 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -18,10 +18,29 @@
   "scripts": {
     "dev": "vite build --watch",
     "build": "vite build && tsc --emitDeclarationOnly",
-    "test": "vitest run"
+    "test": "vitest run",
+    "prepublishOnly": "npm run build"
   },
-  "keywords": [],
+  "keywords": [
+    "stripe",
+    "documentation",
+    "sitemap",
+    "processor",
+    "utility"
+  ],
   "author": "hideokamoto",
   "license": "MIT",
-  "description": "Core library for Stripe loaders"
+  "description": "Core library for Stripe loaders",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/wpkyoto/stripe-docs-loader",
+    "directory": "packages/core"
+  },
+  "bugs": {
+    "url": "https://github.com/wpkyoto/stripe-docs-loader/issues"
+  },
+  "homepage": "https://github.com/wpkyoto/stripe-docs-loader/tree/main/packages/core#readme",
+  "publishConfig": {
+    "access": "public"
+  }
 }
diff --git a/packages/langchain-stripe-loader/package.json b/packages/langchain-stripe-loader/package.json
index 115216d..46b5756 100644
--- a/packages/langchain-stripe-loader/package.json
+++ b/packages/langchain-stripe-loader/package.json
@@ -18,18 +18,36 @@
   "scripts": {
     "dev": "vite build --watch",
     "build": "vite build && tsc --emitDeclarationOnly",
-    "test": "vitest run"
+    "test": "vitest run",
+    "prepublishOnly": "npm run build"
   },
   "dependencies": {
     "@langchain/core": "^0.3.42",
-    "stripe-loaders-core": "*",
-    "turndown": "^7.2.0"
+    "node-html-markdown": "^1.3.0",
+    "stripe-loaders-core": "^0.0.0"
   },
-  "keywords": [],
+  "keywords": [
+    "stripe",
+    "documentation",
+    "loader",
+    "langchain",
+    "llm",
+    "ai",
+    "document-loader"
+  ],
   "author": "hideokamoto",
   "license": "MIT",
   "description": "LangChain loader for Stripe data",
-  "devDependencies": {
-    "@types/turndown": "^5.0.5"
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/wpkyoto/stripe-docs-loader",
+    "directory": "packages/langchain-stripe-loader"
+  },
+  "bugs": {
+    "url": "https://github.com/wpkyoto/stripe-docs-loader/issues"
+  },
+  "homepage": "https://github.com/wpkyoto/stripe-docs-loader/tree/main/packages/langchain-stripe-loader#readme",
+  "publishConfig": {
+    "access": "public"
   }
 }
diff --git a/packages/langchain-stripe-loader/src/StripeComLoader.ts b/packages/langchain-stripe-loader/src/StripeComLoader.ts
index e93bc8a..f2f2953 100644
--- a/packages/langchain-stripe-loader/src/StripeComLoader.ts
+++ b/packages/langchain-stripe-loader/src/StripeComLoader.ts
@@ -1,7 +1,7 @@
 import { SitemapProcessor } from 'stripe-loaders-core';
 import { BaseDocumentLoader } from '@langchain/core/document_loaders/base';
 import { Document } from '@langchain/core/documents';
-import Turndown from 'turndown';
+import { NodeHtmlMarkdown } from 'node-html-markdown';
 import { extractBodyFromHTML } from './utils';
 
 /**
@@ -95,9 +95,12 @@ export class StripeComDocumentLoader extends BaseDocumentLoader {
     const articles = urls
       ? await this.fetchArticlesFromURLs(urls, locale)
       : await this.fetchArticlesFromSitemap(resource, locale);
-    const encoder = new Turndown();
+    
+    // NodeHtmlMarkdownを使用してHTMLをMarkdownに変換
+    const nhm = new NodeHtmlMarkdown();
+    
     const documents = articles.map(article => {
-      const markdownContent = encoder.turndown(article.content);
+      const markdownContent = nhm.translate(article.content);
       return new Document({
         pageContent: markdownContent,
         metadata: {
diff --git a/packages/langchain-stripe-loader/src/StripeDocsLoader.ts b/packages/langchain-stripe-loader/src/StripeDocsLoader.ts
index d1527c7..f9833b9 100644
--- a/packages/langchain-stripe-loader/src/StripeDocsLoader.ts
+++ b/packages/langchain-stripe-loader/src/StripeDocsLoader.ts
@@ -1,7 +1,7 @@
 import { SitemapProcessor } from 'stripe-loaders-core';
 import { BaseDocumentLoader } from '@langchain/core/document_loaders/base';
 import { Document } from '@langchain/core/documents';
-import Turndown from 'turndown';
+import { NodeHtmlMarkdown } from 'node-html-markdown';
 import { extractArticleFromHTML } from './utils';
 /**
  * Interface representing a Stripe documentation article
@@ -61,9 +61,12 @@ export class StripeDocsDocumentLoader extends BaseDocumentLoader {
    */
   async load(locale: string = 'en-US'): Promise<Document[]> {
     const articles = await this.fetchArticlesFromSitemap(locale);
-    const encoder = new Turndown();
+    
+    // NodeHtmlMarkdownを使用してHTMLをMarkdownに変換
+    const nhm = new NodeHtmlMarkdown();
+    
     const documents = articles.map(article => {
-      const markdownContent = encoder.turndown(article.content);
+      const markdownContent = nhm.translate(article.content);
       return new Document({
         pageContent: markdownContent,
         metadata: {