Calibre

@calibreapp.com

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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

Screenshot of new setup screen for a site. Once you've added your URL to Calibre, it spiders your site to find important pages, checks crux, and runs synthetic tests. You'll see the status of each check as they complete.
Core Web Vitals comparison card titled "ikea.com is fastest". Five major US retailers ranked by score: 1. ikea.com 92.1, 2.amazon.com 79.4, 3. walmart.com 73.8, 4. target.com 71.2, 5. uniqlo.com 65.6. Data source: Google CrUX & Calibre Compare.
Quote from Riccardo Margiotta from Arnold Clark on Calibre: "Thanks to detailed page breakdowns and filtering, I’ve found performance issues way deeper into customer journeys than I’ve seen before."
Screenshot of the Baseline audit table in Calibre. It shows web features, their baseline status and source (request/file reference).
Screenshot of Calibre's Website Speed Leaderboard site. It shows IKEA, Forever 21 and Decathlon in the top three spots for the Global Retailers pack