Preview estimated page speed score and core Web Vitals for any URL. The Page Speed Insights Preview is one of 900+ free developer tools on Toolblip - all open to use without a signup.

Open the Page Speed Insights Preview on this page, paste or upload your input, and the result updates as you type. Use the copy button to grab the output, or adjust options to tune the result. Nothing you enter leaves your browser.

Yes. The Page Speed Insights Preview is a free online tool on Toolblip - no signup, no account, no hidden usage limits. It runs in your browser and works on desktop and mobile.

Yes. The Page Speed Insights Preview processes your data entirely client-side, so nothing you paste is uploaded or stored on any server. It's safe to use with internal snippets, private keys for debugging, or any other sensitive content you'd rather not send to a remote service.

The Page Speed Insights Preview is one part of a healthy SEO workflow. It produces the output search engines expect - clean syntax, valid structure, and the metadata they use to index pages - but real ranking gains come from pairing good tooling with useful content.

Once the page has loaded, the Page Speed Insights Preview continues to work without an internet connection. Bookmark this page and return to it anytime - all logic runs locally.