JavaScript partytown.builder.io

Partytown runs 3rd-party scripts from a web worker  ↦

Partytown is a lazy-loaded library to help relocate resource intensive scripts into a web worker, and off of the main thread. Its goal is to help speed up sites by dedicating the main thread to your code, and offloading third-party scripts to a web worker.

Even with a fast and highly tuned website following all of today’s best practices, it’s all too common for your performance wins to be erased the moment third-party scripts are added. By third-party scripts we mean code that is embedded within your site, but not directly under your control. A few examples include: analytics, metrics, ads, A/B testing, trackers, etc.

I learned of this library during our fascinating discussion with Miško Hevery on (next week’s) JS Party.


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