diff --git a/aio/deploy-cn.sh b/aio/deploy-cn.sh
index c584e7802b..5b692fda25 100755
--- a/aio/deploy-cn.sh
+++ b/aio/deploy-cn.sh
@@ -10,7 +10,7 @@ cd `dirname $0`
 
 yarn build
 
-yarn preview &
+yarn preview > /tmp/preview.log &
 
 sleep 3;
 
diff --git a/aio/tools/translator/bin/prerender.ts b/aio/tools/translator/bin/prerender.ts
index 318d3454cc..5af7e4caff 100644
--- a/aio/tools/translator/bin/prerender.ts
+++ b/aio/tools/translator/bin/prerender.ts
@@ -3,7 +3,8 @@ import * as klawSync from 'klaw-sync';
 import { sync as mkdirp } from 'mkdirp';
 import { minify } from 'html-minifier';
 import { dirname, join } from 'path';
-import { launch } from 'puppeteer';
+import { Browser, launch, Request } from 'puppeteer';
+import { chunk, uniq } from 'lodash';
 
 const minifyOptions = {
   collapseWhitespace: true,
@@ -29,23 +30,45 @@ function getApiUrls(): string[] {
 
 const urls = [...getGuideUrls(), ...getApiUrls(), 'index.html'];
 
-async function prerender() {
-  const browser = await launch({ headless: false });
-  const page = await browser.newPage();
-  for (let i = 0; i < urls.length; ++i) {
-    const url = urls[i];
-    await page.goto(`http://localhost:4200/${url}`, { waitUntil: 'domcontentloaded' });
-    await page.waitForSelector('#top-of-page');
-    const content = await page.content();
-    const filename = join('dist', `${url}.html`);
-    mkdirp(dirname(filename));
-    writeFileSync(filename, minify(content, minifyOptions), 'utf-8');
-    console.log(`rendered ${url}...`);
+function filterResource(request: Request) {
+  const type = request.resourceType();
+  if (['image', 'stylesheet', 'font'].indexOf(type) !== -1) {
+    request.abort();
+  } else {
+    request.continue();
   }
 }
 
+async function renderPage(browser: Browser, url: string) {
+  const page = await browser.newPage();
+  await page.setRequestInterception(true);
+  page.on('request', filterResource);
+  await page.goto(`http://localhost:4200/${url}`, { waitUntil: 'domcontentloaded' });
+  await page.waitForSelector('aio-doc-viewer>div');
+  const content = await page.content();
+  const filename = join('dist', `${url}.html`);
+  mkdirp(dirname(filename));
+  writeFileSync(filename, minify(content, minifyOptions), 'utf-8');
+  await page.close();
+  console.log(`rendered ${url}.`);
+}
+
+async function renderPageGroup(browser: Browser, urls: string[]) {
+  await Promise.all(urls.map(url => renderPage(browser, url)));
+}
+
+async function prerender() {
+  const browser = await launch({ defaultViewport: { width: 1280, height: 768 } });
+  const groups = chunk(uniq(urls), 4);
+  for (let i = 0; i < groups.length; ++i) {
+    await renderPageGroup(browser, groups[i]);
+  }
+  await browser.close();
+}
+
 prerender().then(() => {
   process.exit(0);
-}).catch(() => {
+}).catch((e) => {
+  console.error(e);
   process.exit(-1);
 });