I got tired of modern web utility calculators that are cluttered with 15 ad banners, cookie popups, and paywalls locking simple PDF downloads behind an email signup.

So I launched ZeroBloatTools — a collection of 12 specialized, 100% client-side utilities that run entirely in the browser with zero server uploads, no logins, and zero tracking.

What's Inside:

3-Way & 4-Way Switch Simulator : Interactive animated AC circuit visualizer showing traveler conductors in multi-switch wiring.

Stair Stringer Calculator : 2D elevation framing visuals and IRC/IBC building code checks.

4×6 Thermal Label Cropper : Rotates and crops 8.5x11 PDF shipping labels for Rollo, Munbyn, and Zebra thermal printers locally in canvas.

cURL to Playwright & k6 Converter : Converts raw cURL to clean test scripts with automated secret masking.

Home EV Charger & Panel Load Calculator : NEC 220.82 residential capacity solver.

CAT Scale Trailer Tongue Weight Calculator : 2-pass & 3-pass ticket solver with sway risk dynamics.

BRRRR…