Platform Architecture & Mission

About tols.site

We build focused, ultra-fast web utilities that run 100% locally in your browser. No user tracking, no backend file processing, and zero telemetry.

Why We Built tols.site

The modern web is filled with utility websites that require mandatory logins, hide answers behind ad-cluttered pages, and upload your private documents, CSVs, or drone telemetry to remote cloud servers. We believe essential computational tasks should be instant, clean, and completely private.

tols.site was created as an antidote: a unified suite of razor-focused, single-purpose calculators and data translators that run entirely within your device's browser sandbox using modern Web APIs.

100% In-Browser Execution

All file parsing, regex matching, and algorithmic formulas run client-side using JavaScript. Your files never touch our servers.

Zero Accounts & Paywalls

Every tool is completely free, instant to access, and requires no registration or authentication.

Engineered Precision

Formulas are mathematically modeled on official standards: RFC 5545, 2025-2026 DC tax brackets, rule of 17.817, and standard culinary weights.

Our Four Specialized Disciplines

tols.site organizes its specialized programmatic utilities into four distinct professional domains:

Developer & Media Engineering: Label Studio to YOLO/COCO converters, RFC 5545 iCalendar recurrence interpreters, DJI drone video subtitle flight telemetry extraction, and broadcast subtitle QA compliance checkers.
Baking & Culinary Geometry: Mathematical weight-to-volume converters, precision butter stick conversions, active dry vs. instant yeast calculations, and cake pan volume/surface scaling.
Finance, Payroll & Commerce: Amazon settlement report ledger splitters, annual salary to hourly wage calculators with multi-state tax estimations, Washington D.C. progressive paycheck estimators, and commercial Net 30 payment maturity schedules.
Makers, 3D Fabrication & Crafts: Slicer G-code print quoter engines, Amazon KDP paperback cover dimension calculators, Delta-E embroidery thread color matchers, lutherie fretboard placement calculators, and freshwater aquarium stocking engines.

Open Web & Contact

tols.site is engineered with lightweight static HTML5, CSS3, and modern JavaScript without heavy tracking bundles. We are continuously adding new niche calculators and utilities based on community feedback.

If you discover a formula discrepancy, wish to suggest a new tool, or have questions regarding our architecture, reach out directly at contact@tols.site.