diff --git a/website/fragments/.gitkeep b/website/fragments/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/website/scripts/validation/index.js b/website/scripts/validation/index.js
new file mode 100644
index 0000000..1cebce8
--- /dev/null
+++ b/website/scripts/validation/index.js
@@ -0,0 +1,52 @@
+const fragmentPlugin = require('../../plugins/remark-plugins/fragments');
+const variablePlugin = require('../../plugins/remark-plugins/variables');
+const variables = require('../..//variables');
+const docutils = require('../flaturl/doc');
+
+const myArgs = process.argv.slice(2);
+let baseurl = './.flatdocs'
+if (myArgs.length >= 1) {
+  baseurl = myArgs[0]
+}
+
+const mdxLoader = require('@docusaurus/mdx-loader').default;
+const {
+  reportMessage,
+} = require('@docusaurus/utils')
+
+const loadContext = (errors) => {
+  return {
+    async: () => {
+      return () => {}
+    },
+    getOptions: () => ({
+      remarkPlugins: [
+        [variablePlugin, { data: variables, fail: false, onError: (err, line) => {errors.push([err, line])} }],
+        [fragmentPlugin, { prefix: 'fragments', fail: false, baseUrl: process.cwd() + '/fragments', onError: (err, line) => {errors.push([err, line])} }]
+      ],
+    })
+  }
+}
+
+async function validateFragmentsAndVariables(contentPath) {
+  const docs = await docutils.getDocMetadata(contentPath);
+  let haserrors = false
+  for (const doc of docs) {
+    const errors = []
+    const context = loadContext(errors)
+    const mdxLoaderWithContext = mdxLoader.bind(context)
+    await mdxLoaderWithContext(doc.body)
+    if (errors.length > 0) {
+      haserrors = true
+      reportMessage(`- on source page path = ${doc.source}`, 'error')
+      for (const item of errors) {
+        reportMessage(`   line:${item[1].line} Column:${item[1].column} ${item[0]}`, 'error')
+      }
+    }
+  }
+  if (haserrors) {
+    process.exit(1)
+  }
+}
+
+validateFragmentsAndVariables(baseurl)
diff --git a/website/scripts/versions/index.js b/website/scripts/versions/index.js
new file mode 100644
index 0000000..9702f16
--- /dev/null
+++ b/website/scripts/versions/index.js
@@ -0,0 +1,31 @@
+const shell = require('shelljs')
+const fs = require('fs')
+const path = require('path')
+const semver = require('semver');
+const _ = require('lodash');
+
+const writeFile = (file, data) => {
+  fs.writeFileSync(file, data)
+}
+
+function keepLastNVersion(n) {
+  const data = shell.exec('cd $RAGFLOW_MAIN && git tag').stdout.trim()
+  const tags =  _.compact(data.split('\n'))
+    .filter(semver.valid)
+    .sort(semver.compare)
+    .reverse();
+  const groups = _.groupBy(tags, function(item){
+    return semver.major(item) + '.' + semver.minor(item)
+  })
+  let got = 0;
+  const res = [];
+  for (const key in groups) {
+    res.push(groups[key][0])
+    got++
+    if (got >= n) break
+  }
+  return res
+}
+
+const arr = keepLastNVersion(2)
+writeFile('./versions.json', JSON.stringify(arr, null, 2))
\ No newline at end of file