CoreWebVitalsPulse: showcase checks of well-known sites
21 public sites checked read-only by Zalwin. A free, read-only check of the page-level causes of poor Core Web Vitals: HTML weight, render-blocking scripts, third-party script load, font loading, image sizing that causes layout shift, lazy…
Automated checks of public pages; may be incomplete. Not ratings of the companies. Corrections and removals.
- linear.app: 8 of 10 signals found (80/100) (2026-10-27)
- snowflake.com: 8 of 10 signals found (80/100) (2026-10-27)
- atlassian.com: 7 of 10 signals found (75/100) (2026-10-27)
- hubspot.com: 7 of 10 signals found (75/100) (2026-10-27)
- notion.so: 7 of 10 signals found (75/100) (2026-10-27)
- stripe.com: 7 of 10 signals found (75/100) (2026-10-27)
- vercel.com: 7 of 10 signals found (75/100) (2026-10-27)
- figma.com: 6 of 10 signals found (65/100) (2026-10-27)
- shopify.com: 7 of 10 signals found (65/100) (2026-10-27)
- twilio.com: 7 of 10 signals found (65/100) (2026-10-27)
- airtable.com: 6 of 10 signals found (60/100) (2026-10-27)
- datadoghq.com: 7 of 10 signals found (60/100) (2026-10-27)
- intercom.com: 6 of 10 signals found (60/100) (2026-10-27)
- slack.com: 7 of 10 signals found (60/100) (2026-10-27)
- cloudflare.com: 6 of 10 signals found (55/100) (2026-10-27)
- gitlab.com: 6 of 10 signals found (50/100) (2026-10-27)
- mailchimp.com: 6 of 10 signals found (50/100) (2026-10-27)
- monday.com: 6 of 10 signals found (50/100) (2026-10-27)
- zendesk.com: 5 of 10 signals found (50/100) (2026-10-27)
- webflow.com: 4 of 10 signals found (35/100) (2026-10-27)
- asana.com: 3 of 10 signals found (25/100) (2026-10-27)