How much performance is your
third-party app stack costing you?
Every third-party widget, pixel, and tracking script injects render-blocking JavaScript that freezes mobile processors. Test your live website speed below, or select installed apps to calculate your estimated mobile CPU delay, Core Web Vitals penalty, and conversion impact.
Scan any live website
Enter any website or store URL to run an emulated 4G mobile Lighthouse audit and inspect third-party script bloat in real time.
Select the apps, widgets, or tools installed on your site:
Page Builders & Design Apps
Severe CPU & DOM PenaltyEmail, SMS & Marketing Popups
High Script WeightProduct Reviews & Social Proof
Moderate Widget OverheadSubscriptions & Upsell Drawers
Cart & Checkout DelayCustomer Support & Live Chat
Persistent Background ExecutionAnalytics, Heatmaps & Attribution
Continuous Event ListenersSearch, Filters & Translation
Catalog Query BlockingSelect your apps
Toggle the apps you currently use to calculate your mobile performance impact.
We don't tell you to delete your apps. We optimize script scheduling, delay non-critical hydration, and refactor heavy apps into native Liquid.
The Klickspell Solution
You don't need to delete your apps.
You need intelligent scheduling.
Most speed agencies tell you to remove Klaviyo, Judge.me, or Recharge because they don't know how to optimize front-end code. We keep 100% of your marketing and tracking stack fully functioning while decoupling their execution from the critical mobile paint.
