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JavaScript Runbooks

Practical engineering runbooks, terminal benchmarks, and code fixes categorized under JavaScript.

6 min read

Fixing Interaction to Next Paint (INP) Delays Caused by Third-Party Scripts

How bloated marketing tags, hotjar heatmaps, and chat widgets locked up the browser main thread for 620ms on mobile button clicks, and how web worker offloading restored a sub-50ms green INP score.

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Stop Wondering If Your On-Page SEO & Tech Stack Are Truly Optimized End-to-End.