We’re a friendly web performance platform that helps automate speed testing and act on reporting data, no matter your role.
Real User, Google CrUX & Synthetic Monitoring.
→ calibreapp.com
Calibre
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🆕 Our free Core Web Vitals tool, now with UX Rating and beautiful global performance maps that show the whole picture
Read what's new: calibreapp.com/changelog/ar...
We will never get tired of customers telling us they found bugs nobody else could see.
Thanks for the kind words Riccardo!
A world map in 10kb. How Calibre’s new UX Rating hexagon map came to life.
calibreapp.com/blog/buildin...
A beautiful new free Core Web Vitals checker, featuring UX Rating, an interactive hexagonal world map, and richer Chrome UX Report data.
Calibre CLI 7.0 is out 🚀
New commands to access real user performance data:
• calibre rum — live visitors, Web Vitals, UX ratings
• calibre crux — Chrome User Experience Report data
• calibre synthetic — reorganised synthetic commands
and more! see: calibreapp.com/changelog/ar...
How we use Playwright to generate 585+ screenshots across every theme and viewport — and how it became our design QA process.
calibreapp.com/blog/screenshot-pipeline-qa-review
How many of your users are having a good time on your site right now?
UX Rating grades end-to-end real user sessions, not just pageviews.
New post on why Good% is the number worth watching:
calibreapp.com/blog/ux-rating
New: Synthetic page-level audits now include browser Baseline status.
This new Baseline audit details browser support for web platform features, classifying technologies as Limited Availability, Newly Available, or Widely Available.
Learn more on the changelog:
calibreapp.com/changelog/ar...
🆕 New free tool from Calibre — Compare Website Speed.
Rank up to 5 sites side-by-side on real Chrome user data from Google’s CrUX dataset.
See who leads on Core Web Vitals, where each site falls short, and how rankings shift over time.
calibreapp.com/tools/compar...
Website Speed Leaderboard, updated today:
💐 Fresh data from March 26'
🏛️ New report: Australian Government
🎓 New report: Australian Universities
calibreapp.com/tools/website-speed-leaderboard
Calibre
How we built a new custom hexagonal map displaying user experience rating
I wanted to call out some tools from the community this month.
First up, @calibreapp.com have a Web Site Leaderboard of key areas:
calibreapp.com/tools/websit...
Similar to the Core Web Vitals Tech report it uses HTTP Archive data but then groups it by industry.
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Calibre
CLI 7.0 introduces Real User Metrics and Chrome User Experience Report commands, restructures the command hierarchy, and adds new Node.js API exports.
