DevToolBox

Free online developer tools that run entirely in your browser. Your data never leaves your device.

Live Site

https://pinisolomon.github.io/devtoolbox/

Tools Included (12 tools)

1. JSON Formatter & Validator - Format, validate, and beautify JSON
2. JSON Minifier - Compress JSON by removing whitespace
3. Base64 Encode/Decode - Encode/decode Base64 with URL-safe option
4. URL Encoder/Decoder - Encode/decode URL components
5. HTML Entity Encoder - Encode/decode HTML entities
6. Hash Generator - MD5, SHA-1, SHA-256, SHA-512 hashes
7. JWT Decoder - Decode and inspect JSON Web Tokens
8. Regex Tester - Test regex with real-time matching
9. Text Diff Checker - Compare two texts with highlighted diffs
10. UUID Generator - Generate UUID v4 with bulk support
11. Unix Timestamp Converter - Convert between timestamps and dates
12. Color Converter - Convert between HEX, RGB, and HSL

Tech Stack

• Pure HTML/CSS/JavaScript (no framework, no build step)
• All processing happens client-side
• Hosted on GitHub Pages (free)
• SEO-optimized with individual pages per tool

Revenue Model

• Google AdSense (once traffic reaches threshold)
• Each tool page targets specific SEO keywords
• Privacy-first approach builds trust and repeat visits

SEO Keywords Targeted

• json formatter online
• base64 encode decode
• hash generator md5 sha256
• jwt decoder online
• regex tester
• url encoder decoder
• uuid generator
• unix timestamp converter
• diff checker
• color converter hex rgb

Local Development

npx serve .

Deployment

Deployed via GitHub Pages. Push to main branch auto-deploys.