Trello Core Web Vitals
How real Chrome users experience trello.com, from Google's Chrome UX Report: the 75th percentile of visits on every device.
Trello fails Core Web Vitals
Sep 25 – Oct 22, all devices
INP
161 ms
Good
LCP
3.9 s
Needs improvement
CLS
0.24
Needs improvement
FCP
706 ms
Good
TTFB
479 ms
Good
INP over time
Weekly p75. The dashed line is the 200 ms "good" threshold.
What the numbers say
- Trello fails Core Web Vitals on Largest Contentful Paint (3.9 s, good is 2.5 s or less) and Cumulative Layout Shift (0.24, good is 0.10 or less).
- Time to first byte is 479 ms, so most of the LCP time is spent after the first byte: loading the main image, fonts or scripts.
- Among 16 productivity and collaboration sites we track, Trello has the 10th fastest LCP.
- INP has improved by 33 ms over the last 25 weeks, from 192 ms to 159 ms.
Keep a site like this from getting slower
Real-user data shows a regression weeks after it ships. Vitalgate runs Lighthouse on every pull request and fails the check when a change breaks budgets like these: LCP ≤ 3.9 s, CLS ≤ 0.24, FCP ≤ 1.8 s.
Other productivity and collaboration sites
| Site | Core Web Vitals | LCP | INP | CLS |
|---|---|---|---|---|
| Notion | Fails | 4.9 s | 153 ms | 0.01 |
| Slack | Passes | 1.9 s | 83 ms | 0.07 |
| Asana | Fails | 2.0 s | 216 ms | 0.15 |
| Monday.com | Passes | 2.4 s | 177 ms | 0.02 |
| ClickUp | Passes | 2.4 s | 169 ms | 0.03 |
| Airtable | Passes | 1.9 s | 103 ms | 0.01 |
| Miro | Fails | 4.9 s | 222 ms | 0.07 |
| Loom | Fails | 4.2 s | 146 ms | 0.08 |
| Calendly | Fails | 5.3 s | 170 ms | 0.02 |
| Zoom | Fails | 5.5 s | 113 ms | 0.07 |
| Dropbox | Fails | 3.8 s | 245 ms | 0.09 |
| Todoist | Passes | 1.4 s | 96 ms | 0.04 |
| Obsidian | Passes | 1.1 s | 45 ms | 0.00 |
| Discord | Fails | 6.3 s | 299 ms | 0.10 |
| Zapier | Passes | 2.2 s | 126 ms | 0.06 |