Cosmo
Cosmo is a Webflow theme by Templates ($99). Tested on 2026-09-28 with Google Lighthouse via PageSpeed Insights on its own demo store, it scores 72 for mobile speed and 99 for desktop speed, 91/91 for SEO and 86/86 for accessibility (mobile/desktop, 0–100).
Mobile72
Desktop99
Scores
| Mobile | Desktop | |
|---|---|---|
| Speed | 72 | 99 |
| SEO | 91 | 91 |
| Accessibility | 86 | 86 |
| Best practices | 92 | 92 |
Single preset · measured 2 times since 2026-09-28 · Lighthouse via PageSpeed Insights · 0–100, 90+ is good.
Why not 100 — Cosmo home page
Mobile
Speed 72 · 28 points to gain
- −24.5 Largest Contentful Paint medium effort
- −2 First Contentful Paint medium effort
- −1.3 Speed Index medium effort
- −0.5 Cumulative Layout Shift medium effort
SEO 91 · 9 points to gain
- −9.1 Links do not have descriptive text low effort
Accessibility 86 · 14 points to gain
- −3.7 Background and foreground colors do not have a sufficient contrast ratio. medium effort
- −3.7 `<html>` element does not have a `[lang]` attribute low effort
- −3.7 Links do not have a discernible name medium effort
- −1.6 Heading elements are not in a sequentially-descending order medium effort
- −1.6 Document does not have a main landmark. medium effort
Best practices 92 · 8 points to gain
- −3.8 Displays images with incorrect aspect ratio low effort
- −3.8 Browser errors were logged to the console medium effort
Desktop
SEO 91 · 9 points to gain
- −9.1 Links do not have descriptive text low effort
Accessibility 86 · 14 points to gain
- −3.7 Background and foreground colors do not have a sufficient contrast ratio. medium effort
- −3.7 `<html>` element does not have a `[lang]` attribute low effort
- −3.7 Links do not have a discernible name medium effort
- −1.6 Heading elements are not in a sequentially-descending order medium effort
- −1.6 Document does not have a main landmark. medium effort
Best practices 92 · 8 points to gain
- −3.8 Displays images with incorrect aspect ratio low effort
- −3.8 Browser errors were logged to the console medium effort
Presets and pages
| Preset / page | Speed | SEO | A11y | Speed | SEO | A11y | Tested |
|---|---|---|---|---|---|---|---|
| mobile | desktop | ||||||
| Cosmo default demo ↗ | 72 | 91 | 86 | 99 | 91 | 86 | 2026-09-28 |
| home ↗ | 72 | 91 | 86 | 99 | 91 | 86 | 2026-09-28 |
Show this score on your site
A live badge: it always shows Cosmo's current score and links back here. Paste this where the theme is sold or documented.
<a href="https://themestested.com/theme/webflow/cosmo-agency-website-template"><img src="https://themestested.com/badge/webflow/cosmo-agency-website-template.svg" alt="Cosmo speed score on Themestested" height="20"></a>
Add ?device=d for the desktop score, or ?metric=seo / ?metric=a11y for SEO or accessibility.