I Built 1,829 Free Browser Tools — Here's the Complete Directory

I built 1,829 browser-based calculators, generators, and utilities organized across 98 categories spanning 30+ countries. Everything runs entirely in your browser — no backend servers, no sign-up, no data collection.

Why Browser-Only?

• Client-side JavaScript execution — your data never leaves your device
• Offline functionality after initial load
• No account requirements or rate limiting
• Mobile-responsive with dark/light mode
• Auto-save using localStorage

Finance & Tax (300+ tools)

Tools for 10 countries: US (85 tools), UK (28), Australia (33), Canada (15), New Zealand, Singapore, India, plus EU compliance, crypto/DeFi, and freelancer calculators.

→ Finance Tools
→ US Tax Tools
→ UK Tax Tools
→ Australia Tools

Europe (17 Countries, Native Languages)

Country-specific calculators in local languages — German, Spanish, Portuguese, Finnish, Swedish, French, Italian, Dutch, Norwegian, and more. All use official tax brackets and local terminology.

→ Germany (46 tools)
→ France
→ Netherlands
→ Finland

Developer & Tech (131 tools)

JWT decoder, URL parser, JSON formatter, Base64 encoder/decoder, regex tester, cron builder. AI-powered tools use a 3-tier fallback system: Chrome AI, Transformers.js, then rule-based — works in every browser.

→ Developer Tools
→ AI Tools

Health & Wellness (135 tools)

BMI calculators, calorie counters, sleep trackers, skincare analyzers, elder care nutrition calculators, and grooming tools.

→ Health Tools

Work & Business (94 tools)

Salary calculators, resume ATS scorers, Amazon FBA tools, contract analyzers, compliance checklists.

→ Career Tools

Home & Hobbies (126 tools)

Restaurant calculators, baking tools, gardening planners, candle-making, knitting utilities.

→ Home Tools

Sports & Outdoors (55 tools)

Running pace calculators, sport-specific tools for football, cricket, cycling.

→ Sports Tools

Everyday Utilities (289 tools)

FIRE calculators, unit converters, timers, text tools, image editors, math calculators, diagnostic tools.

→ Everyday Tools

Middle East, Africa & Asia

Tools for UAE, Saudi Arabia, Egypt, Morocco, Bangladesh, Japan, Malaysia, Philippines, and more — each with local currencies and regulations.

Technical Stack

• Static site on GitHub Pages (vanilla HTML/CSS/JS, no framework)
• Service worker for offline support
• CSS custom properties for theming
• JSON-LD structured data (BreadcrumbList, FAQPage, WebApplication)
• Share links reconstruct inputs via URL parameters — no server storage

---

Explore the full directory at tool.teamzlab.com.

AI-friendly indexes: llms.txt (curated) | llms-full.txt (complete).

---

Originally published at https://tool.teamzlab.com