Supercharge Learning

DEVELOPERTOOLKIT

A complete suite of 15+ tools for developers and students.

AI Text Cleaner

Fix grammar, remove emojis, rephrase professionally. Powered by Gemini AI.

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Text to Speech

Listen to text in natural Hindi/English voices. Free TTS converter.

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One-Liner Converter

Transform messy 5-line loops into elegant, professional Python one-liners.

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HTML to PDF

Convert HTML/CSS code to PDF with live preview. A4, Letter & Invoice support.

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Typing Speed Test

Professional WPM test. Plain and simple. Focus on accuracy and speed.

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Typing Arcade

5+ Games: Cyber Defense, Neon Rush, Bit Boss. Fun way to type fast.

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Code Playground

Run Python, JS, C++ code instantly. Multi-language online compiler.

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Web Playground

Write HTML, CSS, & JS with live preview. The best online frontend editor.

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SQL Beautifier

Format complex SQL queries instantly. Turn unreadable code into clean, professional syntax.

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CSV Merger

Merge multiple CSV files into one master file effortlessly. 100% Free & Secure.

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Loop Visualizer

Watch loops run step-by-step. See exactly how 'i' changes and 'while' logic works.

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Code Output Predictor

Challenge yourself. Can you guess the output of these tricky snippets before running them?

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Colab to PDF Guide

Learn the best ways to export Google Colab notebooks to PDF securely.

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Percentage Calculator

Solve simple percentage, percentage change, and 'what %' problems instantly.

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Age Calculator

Calculate your exact age and see days remaining until your next birthday.

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Roadmap / Encrypted Functions

Regex Builder

Visual Regex construction

Interview Prep

Mock coding interviews

API Tester

Test REST endpoints instantly

Professional Coding Tools tailored for Hello World Classes Students

Welcome to the official Hello World Classes Developer Toolkit. We understand that learning to code is more than just watching tutorials—it's about doing. That's why we've built this suite of free, high-performance tools to assist you in your journey from a beginner to a full-stack developer.

Why use our tools?

Unlike generic online utilities, our tools are built with the specific needs of computer science students and Indian developers in mind. Whether you need to clean up text for a project,convert HTML assignments to PDF, or test your typing speed for a coding interview, we have you covered.

Integrate with our Courses

These tools are designed to complement our free courses on YouTube. Use the Code Playground to test snippets from our Python tutorials, or use the SQL Beautifier while following our Database Management System (DBMS) playlist. Everything is free, fast, and runs directly in your browser.