How GOV.UK Boosted Performance by Dropping jQuery: 31% JS Size Reduction

Matt Hobbs, the front‑end lead at GOV.UK, removed jQuery from 13 applications, cutting JavaScript size by up to 49 % and improving key performance metrics such as processing time, First CPU Idle, and long‑task duration, even under poor network conditions.

Technical DebtWeb Optimizationfrontend

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How GOV.UK Boosted Performance by Dropping jQuery: 31% JS Size Reduction