Download websites that use Twenty Seventeen

About Twenty Seventeen

Twenty Seventeen arrived on a great many of these sites the way furniture arrives with a rented flat. The theme shipped inside the core WordPress.org download as the bundled default of its release year, so a large part of the population running it never made a decision about it at all. Released in 2016 under GPL v2 and written in PHP like the rest of the WordPress template layer, the theme was built around a video header, a sectioned front page and a business tone that suited small companies and personal sites.

That origin is what makes the detection interesting. A default theme is the resting state of a WordPress install, so finding it untouched is often evidence about the owner rather than about the design. Sites sitting on the bundled theme tend to fall into recognisable groups. Some are dormant, set up once and never revisited. Some are placeholders parked while a real build is commissioned. Some belong to owners who genuinely liked the layout and stayed. Detection cannot separate those groups on its own, and any list of theme users should be read with that mixture in mind.

As of September 2026 the theme appears on 190,686 sites, with 55,389 of them attributed to United States and a strong lean towards .com. The spread reflects where WordPress itself is dense rather than anything specific to the design, which is the usual pattern for anything bundled with a platform instead of sold on its own.

There is a further caveat worth stating plainly. Theme detection reads the stylesheet path a page loads, so a heavily customised child theme built on this parent still reports the parent. A site that looks nothing like the stock design can therefore sit in the same bucket as an install nobody has logged into for years. The signal is honest about which template code is running and silent about how much of it survives on screen.

Given all that, who actually wants the list. Agencies prospecting for redesign work use bundled themes as a proxy for neglected sites, since an owner still on the default rarely has a maintenance contract. Security and hosting teams use the same signal differently, because a WordPress install left at its defaults often carries an old core version and unpatched plugins beside it. Researchers tracking how platform defaults shape the visible web want the population itself, not a sample.

None of those questions can be answered one domain at a time. Checking a single site tells you which theme that site runs and nothing about how common the pattern is, what else travels with it, or which corner of the market it concentrates in. The downloadable file gives the whole detected population with the rest of each site's stack beside it, so the theme becomes one filter among many rather than the entire answer. Joining it to plugin data, to country and to domain ending is what turns a theme name into a segment worth contacting.