diff --git a/tools/node_tools/polygerrit_app_preprocessor/links-updater.ts b/tools/node_tools/polygerrit_app_preprocessor/links-updater.ts
new file mode 100644
index 0000000..eb7212b
--- /dev/null
+++ b/tools/node_tools/polygerrit_app_preprocessor/links-updater.ts
@@ -0,0 +1,123 @@
+/**
+ * @license
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import * as fs from "fs";
+import * as parse5 from "parse5";
+import * as dom5 from "dom5";
+import {HtmlFileUtils, RedirectsResolver} from "./utils";
+import {Node} from 'dom5';
+import {readMultilineParamFile} from "../utils/command-line";
+import {FileUtils} from "../utils/file-utils";
+import { fail } from "../utils/common";
+import {JSONRedirects} from "./redirects";
+
+/** Update links in HTML file
+ * input_output_param_files - is a list of paths; each path is placed on a separate line
+ *   The first line is the path to a first input file (relative to process working directory)
+ *   The second line is the path to the output file  (relative to process working directory)
+ *   The next 2 lines describe the second file and so on.
+ * redirectFile.json describes how to update links (see {@link JSONRedirects} for exact format)
+ * Additionaly, update some test links (related to web-component-tester)
+ */
+
+function main() {
+  console.log(process.cwd());
+
+  if (process.argv.length < 4) {
+    console.info("Usage:\n\tnode links_updater.js input_output_param_files redirectFile.json\n");
+    process.exit(1);
+  }
+
+  const jsonRedirects: JSONRedirects = JSON.parse(fs.readFileSync(process.argv[3], {encoding: "utf-8"}));
+  const redirectsResolver = new RedirectsResolver(jsonRedirects.redirects);
+
+  const input = readMultilineParamFile(process.argv[2]);
+  const updater = new HtmlFileUpdater(redirectsResolver);
+  for(let i = 0; i < input.length; i += 2) {
+    const srcFile = input[i];
+    const targetFile = input[i + 1];
+    updater.updateFile(srcFile, targetFile);
+  }
+}
+
+/** Update all links in HTML file based on redirects.
+ * Additionally, update references to web-component-tester */
+class HtmlFileUpdater {
+  private static readonly Predicates = {
+    isScriptWithSrcTag: (node: Node) => node.tagName === "script" && dom5.hasAttribute(node, "src"),
+
+    isWebComponentTesterImport: (node: Node) => HtmlFileUpdater.Predicates.isScriptWithSrcTag(node) &&
+        dom5.getAttribute(node, "src")!.endsWith("/bower_components/web-component-tester/browser.js"),
+
+    isHtmlImport: (node: Node) => node.tagName === "link" && dom5.getAttribute(node, "rel") === "import" &&
+        dom5.hasAttribute(node, "href")
+  };
+  public constructor(private readonly redirectsResolver: RedirectsResolver) {
+  }
+
+  public updateFile(srcFile: string, targetFile: string) {
+    const html = fs.readFileSync(srcFile, "utf-8");
+    const ast = parse5.parseFragment(html, {locationInfo: true}) as Node;
+
+
+    const webComponentTesterImportNode = dom5.query(ast, HtmlFileUpdater.Predicates.isWebComponentTesterImport);
+    if(webComponentTesterImportNode) {
+      dom5.setAttribute(webComponentTesterImportNode,  "src", "/components/wct-browser-legacy/browser.js");
+    }
+
+    // Update all HTML imports
+    const updateHtmlImportHref = (htmlImportNode: Node) => this.updateRefAttribute(htmlImportNode, srcFile, "href");
+    dom5.queryAll(ast, HtmlFileUpdater.Predicates.isHtmlImport).forEach(updateHtmlImportHref);
+
+    // Update all <script src=...> tags
+    const updateScriptSrc = (scriptTagNode: Node) => this.updateRefAttribute(scriptTagNode, srcFile, "src");
+    dom5.queryAll(ast, HtmlFileUpdater.Predicates.isScriptWithSrcTag).forEach(updateScriptSrc);
+
+    const newContent = parse5.serialize(ast);
+    FileUtils.writeContent(targetFile, newContent);
+  }
+
+  private getResolvedPath(parentHtml: string, href: string) {
+    const originalPath = '/' + HtmlFileUtils.getPathRelativeToRoot(parentHtml, href);
+
+    const resolvedInfo = this.redirectsResolver.resolve(originalPath, true);
+    if (!resolvedInfo.insideNodeModules && resolvedInfo.target === originalPath) {
+      return href;
+    }
+    if (resolvedInfo.insideNodeModules) {
+      return '/node_modules/' + resolvedInfo.target;
+    }
+    if (href.startsWith('/')) {
+      return resolvedInfo.target;
+    }
+    return HtmlFileUtils.getPathRelativeToRoot(parentHtml, resolvedInfo.target);
+  }
+
+  private updateRefAttribute(node: Node, parentHtml: string, attributeName: string) {
+    const ref = dom5.getAttribute(node, attributeName);
+    if(!ref) {
+      fail(`Internal error - ${node} in ${parentHtml} doesn't have attribute ${attributeName}`);
+    }
+    const newRef = this.getResolvedPath(parentHtml, ref);
+    if(newRef === ref) {
+      return;
+    }
+    dom5.setAttribute(node,  attributeName, newRef);
+  }
+}
+
+main();