Why I'm building freelance business tools as single HTML files (no build step, no backend, no signup)

A builder packaged freelance business tools as single HTML files that run entirely in the browser.

The tools include a rate calculator, proposal generator, contract generator, and invoice/cash flow tracker.

They use client-side code, plain CSS, localStorage, and browser printing instead of servers or backend services.

The approach avoids signups, subscriptions, and extra infrastructure, appealing to privacy-conscious freelancers and solo developers.