Frontend audit tool
for Next.js and React

Quickly audit your JavaScript and TypeScript frontend projects for performance, accessibility, SEO, and code quality.

Public repositories only. No account required.

v0.1.8

Install in seconds

Run from any JS/TS project directory. Best results with Next.js and React.

Install globally
npm install -g crawwwl
Run your first audit
crawwwl
Full CLI reference

What crawwwl checks

Five scanners covering the frontend issues that most often slip through code review, from slow pages and accessibility gaps to risky code. Best support is for Next.js and React projects.

Spots oversized assets, missing image sizing, lazy-loading gaps, eager media loading, and blocking scripts that can slow pages down and make them feel heavier than they should.