speed-measure-webpack-plugin

Measure and analyse the speed of your webpack loaders and plugins. Current stable version is 1.6.0, released in 2024 after a period of inactivity. Supports webpack 1 through 5, Node >=6. Key differentiator: it wraps your existing webpack config to add timing instrumentation without modifying your original configuration. Output can be human-readable, JSON, or custom. Commonly used to identify bottlenecks in build performance. Active development now maintained by 18ways.