# How to control third-party script weight > Tag managers, chat widgets, ads and pixels often outweigh the page itself and block the main thread. Load them late, remove what nobody uses. Speed & Core Web Vitals ยท HTML version: https://getreport.app/learn/third-party-scripts ## Third-party code weight Passing looks like: Third-party code weight passes. **Why it matters.** Tags, widgets and embeds from other companies run on your visitors' phones at your page's expense. Over 250 KB or 250 ms of blocking is a sign they dominate the load. **How to fix it.** 1. List what each third party gives you; remove the ones nobody looks at. 2. Load the rest after interaction or with a facade (a static thumbnail for YouTube, a click-to-load chat button). 3. Move tags into a tag manager that fires them late, not in . Check your own page: https://getreport.app/