Newslettr
Newslettr is a Astro theme by Julien V (Paid). Tested on 2026-09-13 with Google Lighthouse via PageSpeed Insights on its own demo store, it scores 68 for mobile speed and 94 for desktop speed, 100/100 for SEO and 100/100 for accessibility (mobile/desktop, 0–100).
Mobile68
Desktop94
Scores
| Mobile | Desktop | |
|---|---|---|
| Speed | 68 | 94 |
| SEO | 100 | 100 |
| Accessibility | 100 | 100 |
| Best practices | 77 | 77 |
Single preset · measured 2 times since 2026-09-13 · Lighthouse via PageSpeed Insights · 0–100, 90+ is good.
Why not 100 — Newslettr home page
Mobile
Speed 68 · 32 points to gain
- −21.3 Largest Contentful Paint medium effort
- −6.6 First Contentful Paint medium effort
- −4.1 Speed Index medium effort
- 910 ms Reduce unused JavaScript high effort
Best practices 77 · 23 points to gain
- −19.2 Uses third-party cookies high effort
- −3.8 Issues were logged in the `Issues` panel in Chrome Devtools high effort
Desktop
Speed 94 · 6 points to gain
- −4.7 Largest Contentful Paint medium effort
- −0.6 Total Blocking Time medium effort
- 210 ms Reduce unused JavaScript high effort
Best practices 77 · 23 points to gain
- −19.2 Uses third-party cookies high effort
- −3.8 Issues were logged in the `Issues` panel in Chrome Devtools high effort
Presets and pages
| Preset / page | Speed | SEO | A11y | Speed | SEO | A11y | Tested |
|---|---|---|---|---|---|---|---|
| mobile | desktop | ||||||
| Newslettr default demo ↗ | 68 | 100 | 100 | 94 | 100 | 100 | 2026-09-13 |
| home ↗ | 68 | 100 | 100 | 94 | 100 | 100 | 2026-09-13 |
Show this score on your site
A live badge: it always shows Newslettr's current score and links back here. Paste this where the theme is sold or documented.
<a href="https://themestested.com/theme/astro/newslettr"><img src="https://themestested.com/badge/astro/newslettr.svg" alt="Newslettr speed score on Themestested" height="20"></a>
Add ?device=d for the desktop score, or ?metric=seo / ?metric=a11y for SEO or accessibility.