Online Developer and Security Tools

Developer & Security Tools for IT Professionals

Fuel The Infrastructure

Welcome

Online Dev Tools is a browser-based developer toolkit built for practical engineering work, fast troubleshooting, and technical exploration. Every utility runs locally in your browser, so you can inspect data quickly without creating an account or uploading files to a third-party server.

Teams use these tools during incident response, debugging sessions, API integration checks, and security reviews because they are simple, direct, and consistent. The goal is to reduce friction: open a tool, paste data, get useful output, and move on with your build.

Core tools include JSON Formatter and validator, JSON to TypeScript converter, JWT Decoder with header and payload inspection, CSP Analyzer for Content Security Policy review, Hash Generator (SHA-256, SHA-384, SHA-512 and more), UUID Generator, and Log Explorer for structured log inspection.

Online Dev Tools is designed for web developers, full-stack engineers, security engineers, platform teams, and curious builders who want reliable utilities without noise. If you need quick diagnostics, secure local processing, and readable output, this toolbox is built for that exact workflow.

Take a Break

Two lightweight browser games built in-house.

Latest updates

  • JWT Decoder: header/payload decoding + exp/iat/nbf checks + export
  • CSP Analyzer: severity findings + report download (.txt/.json)

What’s coming next

  • User-requested: Regex Playground
  • In progress: Secure Paste (client-side, self-destructing)

Check out the lab that I am (slowly) but surely bringing online. It's a ghost in the machine now but stick around!

BigHomieCed's Labs

Common Use Cases

  • Formatting and validating malformed JSON payloads
  • Inspecting JWT headers, payload claims, and expiration values
  • Reviewing and debugging Content Security Policy headers
  • Generating cryptographic hashes for integrity checks
  • Creating UUIDs for distributed systems and test data
  • Exploring structured logs during debugging or incident response

Security Model

  • No backend data persistence
  • No cross-user data access
  • Stateless request model
  • No account authentication surface
  • Minimal attack surface due to static delivery

Why Local-First?

  • Lower latency — no round-trip to a processing server
  • Reduced risk of sensitive data exposure
  • No backend infrastructure dependency for core functionality
  • Transparent, inspectable browser execution
  • Predictable behavior without hidden processing layers