Whether you are debugging JSON, generating passwords, or converting files - here are 15 free tools that save me hours every week. All browser-based, no signup.
Text and Code
1. JSON Formatter - Paste messy JSON, get it formatted. Try it
2. Regex Tester - Write and test regex with real-time highlighting. Try it
3. Base64 Converter - Encode/decode Base64. Try it
4. Markdown Preview - Live preview with GFM support. Try it
Security
5. Password Generator - Cryptographically secure. Try it
6. Hash Generator - MD5, SHA-1, SHA-256, SHA-512. Try it
Conversion
7. CSV to JSON - Handles headers and nested data. Try it
8. URL Encoder - Essential for debugging query params. Try it
9. Hex Converter - Hex, decimal, binary, octal. Try it
Design
10. Color Picker - HEX/RGB/HSL conversion. Try it
11. Color Palette Generator - Harmonious palettes. Try it
Images
12. Image Compressor - Lossless compression. Try it
13. QR Code Generator - URLs, text, contact info. Try it
Productivity
14. Pomodoro Timer - Custom work/break intervals. Try it
15. Cron Expression Generator - Visual cron builder. Try it
All 143+ tools at toolkitonline.vip. What free tools do you use daily?
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