I built 42 lightweight, client-side, privacy-focused web tools. Here is the catalog.

Most online utilities are bloated, slow, and send your private data to backend servers. To solve this, I built KandZ Tools—a minimalist suite of 42 high-performance, responsive web tools powered by Angular and Tailwind CSS.

Every single tool in this catalog processes your data 100% client-side inside your browser's RAM. No data is ever transmitted to a server.

Explore the complete catalog live at: https://tools.kandz.me

🧰 Featured Utilities

1. Developer Utilities

• JSON Formatter & Validator – Clean, validate, and minify raw JSON payloads locally.
• Markdown to HTML Converter – Real-time rendering of Markdown syntax into safe HTML tags with a high-contrast preview pane.
• Base64 to Image Decoder – Convert Base64 data strings back into viewable PNG images privately.

2. Finance & Math

• Rent vs. Buy Analyzer – Compare the 10-year total wealth difference between renting and buying.
• Compound Interest Calculator – Project future savings growth with compounding intervals.
• Scientific Calculator – High-precision engineering calculator supporting trigonometry, logs, and exponents.

3. Health & Wellness

• Body Fat Percentage Calculator – Estimate body composition using the standard U.S. Navy Method.
• Pregnancy Due Date Calculator – Estimate delivery dates and track baby size milestones.

Why Client-Side Matters 🛡️

Many developers, students, and professionals handle sensitive data daily, such as API payloads, financial figures, or biometric statistics. Sending this data to unknown servers is an unnecessary security risk. By processing calculations locally, your information never leaves your device.

Check out the full suite of tools and let me know which utility you find most useful: tools.kandz.me