Overview

MCYG Tools is a comprehensive collection of developer utilities designed to streamline API development, data transformation, debugging, and testing workflows. By bringing essential tools into a single browser-based workspace, developers can efficiently validate requests, format and convert data, inspect tokens, process files, and troubleshoot integrations without switching between multiple applications.

Built with productivity and simplicity in mind, MCYG Tools helps developers, testers, and technical teams accelerate everyday tasks through fast, reliable, and privacy-conscious utilities that require no installation, setup, or external dependencies.

⚡ Developer Tools

MOCK API Generator

Create temporary API endpoints for frontend testing and integration.

API Request Tester

Test Core API logic, payload validation, and request workflows.

JSON Formatter

Beautify, validate, and debug JSON data instantly.

JSON → CSV

Convert structured JSON into downloadable CSV format.

JWT Decoder

Inspect headers, payloads, and token validity.

Base64 Encoder

Encode and decode Base64 strings instantly in-browser.

URL Encoder/Decoder

Encode or decode URLs safely and correctly.

Regex Playground

Test and debug regular expressions in real time.

SQL Formatter

Format and clean SQL queries for better readability.

PDF Merger

Merge multiple PDF files into a single document.

Split

Extract a range of pages from a PDF file.

PDF Organizer

Reorder, and organize PDF documents with ease.

PDF & Image Converter

Convert PDF files to images and images to PDF in just a few clicks.

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API Development Modes

MCYG Tools supports two primary API workflows.

🧠 Core API Tools

Designed for internal logic, structured payload testing, and system-level API interactions.

• Focus on request/response structure validation
• Useful for backend service simulation
• Helps debug internal API flows before exposure

🌐 REST API Tools

Designed for public-facing HTTP APIs and frontend integration testing.

• Generate mock REST endpoints instantly
• Simulate status codes, latency, and response payloads
• Ideal for frontend development without a live backend

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Why use MCYG Tools?

MCYG Tools is designed for developers who want fast, reliable utilities without leaving the browser or relying on external services.

• ⚡ Instant client-side processing
• 🔒 Privacy-first (no data leaves your browser unless explicitly needed)
• 🧪 Built for Core API + REST API development workflows
• 🧩 Modular tool ecosystem (expandable architecture)
• 🎯 Minimal, distraction-free interface

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Getting Started

All tools run directly in your browser — no setup, no login, and no configuration required. Just select a tool and start working.