Dev
Dev is a Webflow theme by Templates ($59). Tested on 2026-09-28 with Google Lighthouse via PageSpeed Insights on its own demo store, it scores 80 for mobile speed and 97 for desktop speed, 82/82 for SEO and 91/93 for accessibility (mobile/desktop, 0–100).
Mobile80
Desktop97
Scores
| Mobile | Desktop | |
|---|---|---|
| Speed | 80 | 97 |
| SEO | 82 | 82 |
| Accessibility | 91 | 93 |
| Best practices | 100 | 100 |
Single preset · measured 2 times since 2026-09-28 · Lighthouse via PageSpeed Insights · 0–100, 90+ is good.
Why not 100 — Dev home page
Mobile
Speed 80 · 20 points to gain
- −11.2 Largest Contentful Paint medium effort
- −6.9 First Contentful Paint medium effort
- −1.4 Speed Index medium effort
SEO 82 · 18 points to gain
- −9.1 Document does not have a meta description low effort
- −9.1 Links do not have descriptive text low effort
Accessibility 91 · 9 points to gain
- −3.8 `<html>` element does not have a `[lang]` attribute low effort
- −3.8 Links do not have a discernible name medium effort
- −1.6 Document does not have a main landmark. medium effort
Desktop
Speed 97 · 3 points to gain
- −2.4 Total Blocking Time medium effort
- −0.7 Speed Index medium effort
SEO 82 · 18 points to gain
- −9.1 Document does not have a meta description low effort
- −9.1 Links do not have descriptive text low effort
Accessibility 93 · 7 points to gain
- −3.5 `<html>` element does not have a `[lang]` attribute low effort
- −3.5 Links do not have a discernible name medium effort
Presets and pages
| Preset / page | Speed | SEO | A11y | Speed | SEO | A11y | Tested |
|---|---|---|---|---|---|---|---|
| mobile | desktop | ||||||
| Dev default demo ↗ | 80 | 82 | 91 | 97 | 82 | 93 | 2026-09-28 |
| home ↗ | 80 | 82 | 91 | 97 | 82 | 93 | 2026-09-28 |
Show this score on your site
A live badge: it always shows Dev's current score and links back here. Paste this where the theme is sold or documented.
<a href="https://themestested.com/theme/webflow/dev-portfolio-website-template"><img src="https://themestested.com/badge/webflow/dev-portfolio-website-template.svg" alt="Dev speed score on Themestested" height="20"></a>
Add ?device=d for the desktop score, or ?metric=seo / ?metric=a11y for SEO or accessibility.