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velnoxlabstools
velnoxlabstools

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I built 51 free browser-based developer tools — here's why and how

I was tired of slow, ad-filled tool websites that upload my data to their servers just to format a JSON file.

So I built VelnoxLabs — 51 free browser-based tools that run 100% in your browser. No sign-up. No server upload. No tracking.

Here's what's inside:

Developer Tools

  • JSON Formatter & Validator
  • cURL to Python Requests Converter
  • Cron Expression Generator
  • UUID v4 Generator
  • Base64 Encoder & Decoder
  • JWT Decoder
  • And many more...

Everyday Tools

  • Image Resizer
  • Word Counter
  • Age Calculator
  • BMI Calculator
  • Tip Calculator
  • Invoice Generator

Tech Stack

  • Next.js (App Router)
  • TypeScript
  • Tailwind CSS
  • Deployed on Vercel

Everything runs client-side. Your data never leaves your browser.

Try it here: https://velnoxlabs.com

Feedback welcome!

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UnitBuilds •

Do not follow any external links! DEV.to uses Sloan for automated messages, this is likely phishing.