Stop Pasting Production Tokens into Random Websites. Here’s a Safer Alternative.

Source: Dev.to

Overview

We’ve all done it: need to debug a JWT or format a massive JSON log, so we Google “JWT decoder” and click the first result.
But many of these tools send your data to their servers (check the Network tab). For simple things that might be fine, but for production API keys or user data it’s a serious security risk.

That’s why I built Dev Utility Hub.
Check it out:

Why I built this

I wanted a toolkit I could trust. My strict rule for this project was: “Zero Backend Processing.”
Everything—hashing, formatting, converting—happens right in your browser using JavaScript.

Top Tools Included

JSON Formatter & Validator

Handle large files without crashing.

[Image: JSON Formatter]

JWT Decoder

Debug tokens safely. The secret‑key part is never verified server‑side, so it’s purely for inspection.

[Image: JWT Decoder]

Cron Expression Parser

Because nobody remembers cron syntax perfectly.

[Image: Cron Expression Parser]

Unix Timestamp Converter

A lifesaver for debugging backend logs.

[Image: Unix Timestamp Converter]

The hub is built with Next.js and Tailwind, designed to be clean, fast, and dark‑mode friendly.

Give it a try and let me know what you think!