Plumbline
Plumbline is a Framer theme by John Nicholson (Free). Tested on 2026-10-06 with Google Lighthouse via PageSpeed Insights on its own demo store, it scores 42 for mobile speed and 67 for desktop speed, 69/69 for SEO and 83/83 for accessibility (mobile/desktop, 0–100). Note: its demo home page is heavy — 13.4 MB — heavier than a typical store, so the speed score may understate the theme.
Mobile42
Desktop67
Scores
| Mobile | Desktop | |
|---|---|---|
| Speed | 42 | 67 |
| SEO | 69 | 69 |
| Accessibility | 83 | 83 |
| Best practices | 92 | 92 |
Single preset · measured 2 times since 2026-10-06 · Lighthouse via PageSpeed Insights · 0–100, 90+ is good.
Why not 100 — Plumbline home page
Mobile
Speed 42 · 58 points to gain
- −25 Largest Contentful Paint medium effort
- −19.5 Total Blocking Time medium effort
- −10 Speed Index medium effort
- −3.1 First Contentful Paint medium effort
- 450 ms Reduce unused JavaScript high effort
SEO 69 · 31 points to gain
- −31 Page is blocked from indexing low effort
Accessibility 83 · 17 points to gain
- −6.3 Select elements do not have associated label elements. medium effort
- −4.4 Background and foreground colors do not have a sufficient contrast ratio. medium effort
- −4.4 `<html>` element does not have a `[lang]` attribute low effort
- −1.9 Document does not have a main landmark. medium effort
Best practices 92 · 8 points to gain
- −3.8 Browser errors were logged to the console medium effort
- −3.8 Issues were logged in the `Issues` panel in Chrome Devtools high effort
Desktop
Speed 67 · 33 points to gain
- −24 Largest Contentful Paint medium effort
- −9 Speed Index medium effort
SEO 69 · 31 points to gain
- −31 Page is blocked from indexing low effort
Accessibility 83 · 17 points to gain
- −6.3 Select elements do not have associated label elements. medium effort
- −4.4 Background and foreground colors do not have a sufficient contrast ratio. medium effort
- −4.4 `<html>` element does not have a `[lang]` attribute low effort
- −1.9 Document does not have a main landmark. medium effort
Best practices 92 · 8 points to gain
- −3.8 Browser errors were logged to the console medium 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 | ||||||
| Plumbline default demo ↗ | 42 | 69 | 83 | 67 | 69 | 83 | 2026-10-06 |
| home ↗ | 42 | 69 | 83 | 67 | 69 | 83 | 2026-10-06 |
Show this score on your site
A live badge: it always shows Plumbline's current score and links back here. Paste this where the theme is sold or documented.
<a href="https://themestested.com/theme/framer/plumbline"><img src="https://themestested.com/badge/framer/plumbline.svg" alt="Plumbline speed score on Themestested" height="20"></a>
Add ?device=d for the desktop score, or ?metric=seo / ?metric=a11y for SEO or accessibility.