Screpy is an AI-based web analysis tool that can analyze all pages of your websites in one dashboard and monitor them with your team. It's powered by Lighthouse and it also includes some different analysis tools (SEO, SERP, W3C, Uptime, etc).
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Paid Yahoo! YSlow Alternatives
The best paid alternative to Yahoo! YSlow is Screpy. If that doesn't work for you, our users have ranked more than 10 alternatives to Yahoo! YSlow, but unfortunately only two of them is paid. If you can't find an alternative you can try to remove all filters.
Alternatives list
MachMetrics continually monitors the speed of your website. So you know exactly how your pages are performing throughout the day, around the world, and on various devices
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