Posterity Dark
Posterity Dark is a WordPress theme by Sonal S Sinha (Free). Tested on 2026-09-13 with Google Lighthouse via PageSpeed Insights on its own demo store, it scores 72 for mobile speed and 76 for desktop speed, 40/40 for SEO and 100/100 for accessibility (mobile/desktop, 0–100).
Mobile72
Desktop76
Scores
| Mobile | Desktop | |
|---|---|---|
| Speed | 72 | 76 |
| SEO | 40 | 40 |
| Accessibility | 100 | 100 |
| Best practices | 100 | 100 |
Single preset · measured 2 times since 2026-09-13 · Lighthouse via PageSpeed Insights · 0–100, 90+ is good.
Why not 100 — Posterity Dark home page
Mobile
Speed 72 · 28 points to gain
- −17.5 Largest Contentful Paint medium effort
- −7.2 First Contentful Paint medium effort
- −3.3 Speed Index medium effort
- 300 ms Reduce unused CSS high effort
- 150 ms Minify JavaScript low effort
SEO 40 · 60 points to gain
- −40.3 Page is blocked from indexing low effort
- −10 Document does not have a meta description low effort
- −10 Links do not have descriptive text low effort
Desktop
Speed 76 · 24 points to gain
- −22.3 Cumulative Layout Shift medium effort
- −1.7 Largest Contentful Paint medium effort
SEO 40 · 60 points to gain
- −40.3 Page is blocked from indexing low effort
- −10 Document does not have a meta description low effort
- −10 Links do not have descriptive text low effort
Presets and pages
| Preset / page | Speed | SEO | A11y | Speed | SEO | A11y | Tested |
|---|---|---|---|---|---|---|---|
| mobile | desktop | ||||||
| Posterity Dark default demo ↗ | 72 | 40 | 100 | 76 | 40 | 100 | 2026-09-13 |
| home ↗ | 72 | 40 | 100 | 76 | 40 | 100 | 2026-09-13 |
Show this score on your site
A live badge: it always shows Posterity Dark's current score and links back here. Paste this where the theme is sold or documented.
<a href="https://themestested.com/theme/wordpress/posterity-dark"><img src="https://themestested.com/badge/wordpress/posterity-dark.svg" alt="Posterity Dark speed score on Themestested" height="20"></a>
Add ?device=d for the desktop score, or ?metric=seo / ?metric=a11y for SEO or accessibility.