I built a free multi-tool dev suite that runs 100% in your browser — no signup, no data sent anywhere

Hey r/webdev,

Sick of juggling 8 different websites to format JSON, decode a JWT,
test a regex, or convert a timestamp? I built one place for all of it.
🔗 https://jsonviewer.live

jsonviewer.live — 8 tools in one:

• { } JSON Formatter & Tree Explorer — format, validate, search keys/values
• 🔑 JWT Decoder — decode header/payload, verify HMAC-SHA256 signatures
• ⇄ Base64 Encoder/Decoder — standard + URL-safe, file upload support
• .* Regex Tester — live match highlighting, match table with groups
• 🕐 Unix Timestamp Converter — all formats, any timezone, relative time
• 🎨 Color Picker — HEX/RGB/HSL/HSB, shade generator, WCAG contrast checker
• # UUID Generator — v4/v1/v7, bulk generation, download as .txt or .json
• ▦ QR Code Generator — URL, Wi-Fi, vCard, email, SMS — download PNG/SVG

🔗 https://jsonviewer.live

What makes it different:

• Zero backend. Everything runs in your browser — paste sensitive tokens, internal configs, private data without worrying where it goes
• Works offline after first load
• Dark + light mode
• Mobile friendly

It's fully open source. Would love feedback on what tools to add next.

🔗 https://jsonviewer.live