Toolbox

Developer Tools

Free, fast, browser-based utilities for web developers. No signup, no tracking, no server-side processing. Every tool runs 100% in your browser.

3 tools available

JSON Formatter & Validator

Paste minified or broken JSON — get it formatted with syntax highlighting, validated, and ready to debug. One-click minification included.

JSON Formatter Validator

Free Open Tool

JWT Decoder & Parser

Decode any JSON Web Token to inspect the header, payload, signature, and check expiration status. Color-coded output with copy support.

JWT Auth Decoder

Free Open Tool

LLM Token Counter & Cost Calculator

Estimate token counts and compare API pricing across GPT-4o, Claude Opus 4, Gemini 2.5 Flash, DeepSeek V3 in real-time. Batch API toggle included.

LLM Tokens Pricing

Free Open Tool

Why Use PookieTech Developer Tools?

Every tool on this page is designed with one principle: zero friction. No accounts, no ads blocking your view, no data collection. Paste your input, get your output, and move on.

100% Client-Side

All tools run entirely in your browser using JavaScript. Nothing is sent to our servers. Disconnect from the internet and they still work. Your data stays on your machine.

Built for Working Developers

Format API responses and config files with the JSON Formatter
Debug authentication flows by decoding JWTs with the JWT Decoder
Budget AI API costs before running large workloads with the Token Counter

Coming Soon

We're building more tools based on what developers actually search for every day. Upcoming additions include Base64 Encoder/Decoder, Regex Tester, URL Encoder, Hash Generator, and more.