Developer builds 40-tool browser utility site with zero npm dependencies

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A developer frustrated by login walls and bloated sites built DevUtils, a 40-page browser-based toolbox with 19 utilities and zero npm dependencies. Every tool runs entirely in the browser with no backend, API calls, or CDN scripts, meaning user data never leaves the device. The entire site weighs roughly 120KB compressed, smaller than the JavaScript bundle of most comparable tools. Where standard browser APIs fell short — for MD5 hashing, Markdown parsing, and CSV parsing — the developer wrote custom implementations from scratch rather than importing external libraries. The result loads in milliseconds, requires no build step, and eliminates framework updates and supply-chain security concerns entirely.

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