As a solo developer, I wanted to solve a simple problem: every time I needed a quick tool, I had to visit a different website filled with ads.
So I built ToolKit Online - a collection of 150+ free, browser-based tools.
Categories
- Developer Tools (22): JSON formatter, regex tester, hash generator
- Finance (22): VAT calculator, loan calculator
- Text (21): Word counter, markdown preview
- Math (18): Scientific calculator, chart maker
- Conversion (14): Unit converter, CSV to JSON
- Health (10): BMI calculator, calorie counter
- Images (7): Image compressor, photo editor
Tech Stack
Next.js 16, TypeScript, Tailwind CSS, Vercel. Available in 6 languages (EN, ES, IT, FR, DE, PT) with 1400+ pages. All tools run 100% client-side for privacy.
Results
- 1400+ pages live
- 9 pages on Google first page
- Growing organic traffic from 15+ countries
Try it: toolkitonline.vip
All free, no signup. What tools would you want me to add?
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