What To Fix First
✦ PremiumFree LCP, CLS & INP Test
Check any URL's Core Web Vitals and see the single fix that recovers the most load time — and what the delay is costing you. Free, no signup.
We keep nothing except the shareable result, for 30 days. You’ll get the one change that recovers the most load time, what it’s worth, and the measurements underneath. Example result — sample data, not a live measurement Your hero image is a 2400-pixel JPEG shown at 800 pixels — most of its 1.1 MB never reaches anyone's eyes. That’s what 1.8 s faster is modelled to recover at 10,000 visitors and a 2 % conversion rate.
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Frequently asked questions
What is What To Fix First?
What To Fix First is free LCP, CLS & INP Test. Check any URL's Core Web Vitals and see the single fix that recovers the most load time — and what the delay is costing you. Free, no signup.
Is What To Fix First free?
What To Fix First is a paid product.
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