Highlights · computed from our daily tracking data
- Twenty Fifteen currently ranks #41 and has stayed inside the top 50 in every daily snapshot since Sep 17, 2024 (671 snapshots).
- Its best position in our tracking is #37, first reached on Jan 29, 2026.
- It accounts for roughly 0.5% of all active installs across the themes we track.
- It is averaging 3,611 downloads/day over the last 30 days, up 98% versus the month before (1,820/day).
- The latest release, v4.3, shipped on Aug 19, 2026 (6 days ago) — release #35 since the theme joined the directory in 2014.
Performance · Google Lighthouse, official wordpress.org demo
| Mobile | Desktop | |
| Largest Contentful Paint | 3.1 s | 0.7 s |
| First Contentful Paint | 1.4 s | 0.4 s |
| Total Blocking Time | 0 ms | 0 ms |
| Cumulative Layout Shift | 0.000 | 0.000 |
| Page weight | 244.4 KB | 244.4 KB |
Lab (Lighthouse) data measured on the official demo at wp-themes.com, where every theme serves identical content — so scores isolate the theme's own CSS/JS payload. Tested Aug 3, 2026. Scores vary ±5 between runs. Run a live test ↗
Ranking history
Active installs
Downloads per day
Details
| Author | WordPress.org |
|---|---|
| Current version | 4.3 |
| Versions released | 35 |
| Last updated | 2026-08-19 |
| Added to directory | 2014-12-18 |
| Requires WordPress | 4.1+ |
| Requires PHP | 5.2.4+ |
| Type | Classic theme |
| First tracked here | 2024-09-17 |
Description
Our 2015 default theme is clean, blog-focused, and designed for clarity. Twenty Fifteen's simple, straightforward typography is readable on a wide variety of screen sizes, and suitable for multiple languages. We designed it using a mobile-first approach, meaning your content takes center-stage, regardless of whether your visitors arrive by smartphone, tablet, laptop, or desktop computer.
Frequently asked questions
Is Twenty Fifteen a free theme?
Yes — Twenty Fifteen is a free, open-source (GPL) theme distributed through the official WordPress.org directory.
Is Twenty Fifteen a block theme or a classic theme?
Twenty Fifteen is a classic theme: it uses the traditional Customizer/widgets workflow rather than WordPress Full Site Editing.
How many websites use Twenty Fifteen?
WordPress.org reports 60K+ active installs.
How popular is Twenty Fifteen?
As of August 24, 2026, Twenty Fifteen ranks #41 in the WordPress.org popular themes list. Its best position in our tracking is #37.
When was Twenty Fifteen last updated?
Twenty Fifteen was last updated on August 19, 2026 (version 4.3). It has shipped 35 releases in total.
Who makes Twenty Fifteen?
Twenty Fifteen is developed by WordPress.org. It joined the WordPress.org theme directory in December 2014.
How fast is Twenty Fifteen?
On the official WordPress.org demo, Twenty Fifteen scores 94/100 for mobile performance in Google Lighthouse and 100/100 for desktop (tested August 2026).
