Executive Summary

Many frontend teams today — from single-repo startups to large organizations with monorepos — accumulate non-trivial amounts of unused CSS through churned components, feature flags, and conditional imports, which inflates bundle size and slows time-to-interactive; this pain is acute for the estimated 900,000 frontend teams that buy build/perf tooling, a market we size at $2.7B with an average $3,000 ACV. The people who feel it most are frontend engineers, performance leads, and platform teams responsible for keeping bundle budgets tight across many apps. You could build a developer tool that statically and heuristically analyzes ESM import graphs and CSS Module export usage to deterministically remove unused classes at the export level, offering a Vite/esbuild/Turbopack plugin, a CLI for CI gating, and an optional code-mod or safe-removal mode that preserves source maps and provides rollbacks. Key capabilities would include cross-file analysis to map imports to class tokens, runtime-aware heuristics for dynamic className patterns, and a clear report/dashboard that quantifies bytes saved and potential regressions; practical challenges include handling highly dynamic patterns and minimizing false positives. This is an attractive time to enter the market because teams are prioritizing web performance, modern bundlers expose module graphs that make export-level shaking possible, and componentized styling (CSS Modules/CSS-in-JS) is widespread — all factors behind the market score of 88/100 and revenue potential of 76/100. With relatively low competition, you can differentiate by focusing on provable correctness, deep bundler/runtime integration, conservative safe-defaults for enterprise workflows, and an easy CI integration path; the main obstacles will be building robust heuristics for dynamic usage and earning trust through reproducible, minimal-risk removals.

Executive Summary

Market Opportunity

Tree‑shake unused CSS Module classes by analyzing imports & usage targets a $2.7B = 900k frontend teams x $3,000 ACV (paid build/perf tooling or bundler enterprise add-ons) total addressable market with low saturation and a year-over-year growth rate of 12% (developer tool and front-end build tooling market growth estimate).

Key trends driving demand: Web performance prioritization -- Teams push to reduce bundle size and time-to-interactive, creating demand for more precise removal of unused assets.; ESM & modern bundlers -- Turbopack, Vite and esbuild expose module graphs that enable export-level tree shaking beyond JS to CSS modules.; Componentized styling -- widespread use of CSS Modules & CSS-in-JS increases the opportunity to remove dead style code deterministically.; Build-time intelligence -- shift from heuristic HTML scanning to static-analysis and ML-assisted heuristics for safer dead-code removal..

Key competitors include Vercel / Turbopack (Next.js), Webpack ecosystem (plugins like purgecss-webpack-plugin, css-loader), PurgeCSS / PurifyCSS, esbuild / plugin ecosystem, Tailwind CSS purge / JIT (built-in).

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Tree‑shake unused CSS Module classes by analyzing imports & usage

Executive Summary

Tree‑shake unused CSS Module classes by analyzing imports & usage

Executive Summary

Market Validation

Market Opportunity

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