Shadow Steward
Free page speed check

Is your website slow, and what is slowing it down?

Type your website address. We load the page and the files it uses, measure what is heavy, uncompressed or held up, and tell you what to fix first.

We check the page you type. Add a page address to check that page instead of the home page.

We read your public page the way a visitor's browser would. Nothing is changed and nothing is stored. Read the privacy page.

What the check looks at

  • Server response. How quickly your host starts answering.
  • Page weight. The size of the page and its pictures, scripts and styles.
  • Blocking scripts. Code that stops the page from showing until it loads.
  • Pictures. Oversized files, missing sizes and pictures that could load later.
  • Compression and caching. Whether files are shrunk and kept for repeat visitors.
  • Outside services. How many other websites your page waits for.

You get your score, the biggest files and what to fix first.

More free checks

  • Titles: See how your title and search description look, and get better ones written for you.
  • Broken links: Find links on your page that lead nowhere, before your visitors do.
  • Accessibility: Check alt text, form labels, headings and more against common accessibility problems.
  • Security: Check https, security headers, cookies and mixed content, without any scanning of your site.
  • Image check: alt text, a better file name and a smaller copy of a picture.
  • SEO check: a full report by email.

Want to run this check from your own code? See the API.