Google’s CSS Overview is a panel inside Chrome DevTools, so it only runs where DevTools do — a desktop Chrome window. There is no DevTools on a phone or a tablet. This runs the same kind of audit on our server and shows you the result in whatever browser you already have open, so checking a site’s CSS from your phone is exactly as easy as from your desk.
What you can use it for
Find out what fonts a website uses and see each one set in the site’s own font files, not a lookalike. Pull a color palette ranked by how much of the page each color actually paints. Run a contrast audit against WCAG AA on the text as it really rendered. Read the type scale, the media queries and the CSS statistics. Then export the whole thing as design tokens — DTCG JSON, Tokens Studio JSON, or plain CSS custom properties — and drop two pages side by side to compare them.
- Can I run CSS Overview on my phone?
- Yes. The analysis runs on our server and the report renders in any browser, so a phone or tablet works exactly like a desktop. Google’s CSS Overview is a panel inside Chrome DevTools, and DevTools does not exist in any mobile browser — on Android you need a desktop and a USB cable, and on iPhone or iPad there is no Chrome DevTools at all.
- Do I need DevTools or a browser extension?
- Neither. Paste a URL and you get a report. Nothing is installed, and the finished report has its own link you can send to someone else.
- What does it report?
- Fonts, colors, contrast, the heading outline, the type scale, media queries, unused declarations, stylesheet weights and CSS statistics — plus a design token set built from all of it. Every number comes from computed styles in a real browser rather than from reading the CSS source, so it reflects what the page actually painted.
- Does it work on any site?
- Most of them. Pages behind a login will not resolve, and a few sites refuse automated browsers outright — those get a second attempt in a full browser, which widens what works without guaranteeing it. It analyzes one page per run, not a whole site.
- Is it free?
- Yes, and there is no account.