Posterity
Posterity is a WordPress theme by Sonal S Sinha (Free). Tested on 2026-09-12 with Google Lighthouse via PageSpeed Insights on its own demo store, it scores 75 for mobile speed and 76 for desktop speed, 40/40 for SEO and 91/92 for accessibility (mobile/desktop, 0–100). On its marketplace it is rated 4.9 out of 5 from 9 reviews.
Mobile75
Desktop76
Scores
| Mobile | Desktop | |
|---|---|---|
| Speed | 75 | 76 |
| SEO | 40 | 40 |
| Accessibility | 91 | 92 |
| Best practices | 100 | 100 |
Single preset · measured 2 times since 2026-09-12 · Lighthouse via PageSpeed Insights · 0–100, 90+ is good.
Why not 100 — Posterity home page
Mobile
Speed 75 · 25 points to gain
- −16 Largest Contentful Paint medium effort
- −4.3 Cumulative Layout Shift medium effort
- −2.4 First Contentful Paint medium effort
- −2.2 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
Accessibility 91 · 9 points to gain
- −8.6 Background and foreground colors do not have a sufficient contrast ratio. medium effort
Desktop
Speed 76 · 24 points to gain
- −22.3 Cumulative Layout Shift medium effort
- −1.5 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
Accessibility 92 · 8 points to gain
- −7.6 Background and foreground colors do not have a sufficient contrast ratio. medium effort
Presets and pages
| Preset / page | Speed | SEO | A11y | Speed | SEO | A11y | Tested |
|---|---|---|---|---|---|---|---|
| mobile | desktop | ||||||
| Posterity default demo ↗ | 75 | 40 | 91 | 76 | 40 | 92 | 2026-09-12 |
| home ↗ | 75 | 40 | 91 | 76 | 40 | 92 | 2026-09-12 |
Show this score on your site
A live badge: it always shows Posterity's current score and links back here. Paste this where the theme is sold or documented.
<a href="https://themestested.com/theme/wordpress/posterity"><img src="https://themestested.com/badge/wordpress/posterity.svg" alt="Posterity speed score on Themestested" height="20"></a>
Add ?device=d for the desktop score, or ?metric=seo / ?metric=a11y for SEO or accessibility.