🚀 How to Instantly Debug JSON, JWTs, curl Commands, and More — All Inside Your Browser

If you're a developer, you probably do this at least once a day: format some JSON decode a JWT convert Base64 parse a timestamp compare two text blobs turn a curl command into code Each task is small… but switching between tools slows everything down. In this tutorial, I’ll show you how to debug these common cases quickly, safely, and directly in your browser — using client-side tools (no data ever leaves your device). Let’s get started. 🧩** 1. Format & Validate JSON (Without Sending It to a Server)** The classic problem: You paste some JSON → it’s minified → broken → or too large for online formatters. Here’s the fast approach: Step 1: Open a JSON formatter Step 2: Paste your data Step 3: See it beautified instantly Bonus: Validate structure + detect errors This works even with: deeply nested objects 1MB+ JSON files escaped JSON strings (common in logs) If you’ve ever had a formatter freeze, this solves it. 👉 Try it: https://www.spoold.com/tools/json/format 🔐 2. Decode a JWT Token Saf