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Pyodide WASM
High-Performance In-Browser IDE & Universal Algorithm Workbench

Practice, Code & Compile in All Languages & Subjects

Zero server setup, 100% private client-side execution. Choose any programming language or university lab module to begin coding below.

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Jump straight to In-Browser Code Editor & Output Console below

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All Types of Languages

Click any language to select runtime and jump straight to code
7 Runtimes
🐍
Pyodide WASM

Python 3.11

NumPy, Matplotlib, OpenCV, Pandas & scientific libraries in-browser.

Select & Code
⚙️
C99 / Clang

C Language

Pointers, memory management, dynamic structures & graphics.h.

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⚡
C++20 / STL

C++20

Standard Template Library, vectors, maps, stacks & competitive algorithms.

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☕
JVM 17 Web

Java 17

Object-oriented programming, classes, inheritance & university labs.

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🌐
HTML5 DOM

HTML5

Semantic page structures, canvas rendering & instant live preview.

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🎨
Modern CSS3

CSS3

Flexbox, Grid layouts, keyframe animations & responsive design.

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✨
ESNext / Web

JavaScript

Modern ES6+ syntax, asynchronous JS, DOM manipulation & client sandbox.

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Different Subjects & Lab Modules

Specialized curriculums with starters, testbeds & printable exports
7 Modules
Starter Templates

Data Structures & Algorithms

Linked Lists, Binary Trees, Stacks, Queues, Graphs, Sorting & Dynamic Programming with 1-click code injection.

40 Experiments

Computer Vision & OpenCV

Grayscale, Canny edge detection, morphological filters, transformations & face tracking rendered on live canvas.

80 Solved Codes

University Practice Lab

20 solved core lab problems across Python, C, C++, and Java: Primes, Fibonacci, Matrix math & Binary Search.

Daily Brain Work

Daily Mind Work & Puzzles

Sharpen your analytical skills with tricky code output puzzles, execution tracing, and instant in-depth explanations.

Universal AI

Cross-Language Transpiler

Universal zero-cost code converter: instantaneously convert any Python logic into Java, C, or C++ with correct syntax.

Printable PDF

Lab Record PDF Generator

Generate official college practical lab records complete with Aim, Algorithm, Code, Terminal Output, and Marks Sheet.

ARM LPC-1768 Kit

Embedded Systems Lab

ARM Cortex-M3 kit simulator: 7-segment display (0–F), 8 LEDs (P0.4–P0.11), buzzer & USB laptop-to-hardware link.

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Input & Output Below
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main.py
Saved
1
Ln 1, Col 1
Python 3.11
Ctrl+Enter to run
Code Scroll
🐍 Python
Console Scroll
Custom Input (stdin) scanf • cin • input()
Welcome to VAB-CODE (vab-code)! Select a language, write your code, and hit Run.
Ready 0ms
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High-Speed WebAssembly Compilers

VAB-CODE runs code directly in your browser using client-side WebAssembly technology. Practice Python 3.11 with full support for scientific packages (NumPy, Pandas, Matplotlib), ANSI C99, ISO C++17 with STL, and Java 17 OOP without needing any desktop installation or remote server dependencies.

DSA & Algorithm Curriculum

Designed for computer science students and developers. Includes coding challenges covering Data Structures (Linked Lists, Binary Trees, Stacks, Queues), Sorting Algorithms (Quick Sort, Merge Sort, Bubble Sort), and Computer Graphics with graphics.h canvas rendering.

Zero-Data Logging & Privacy First

Your academic code and projects remain 100% private on your own device. VAB-CODE operates with zero backend code logging, storing your snippets only in browser localStorage. Export printable Lab Record PDFs and share code with peers effortlessly.

Frequently Asked Questions (FAQ)

Is VAB-CODE completely free for students?

Yes. VAB-CODE is 100% free forever for all college students, faculty members, and self-taught developers. There are no subscriptions, paywalls, or hidden compile limits.

Can I use VAB-CODE for my college practical exams and lab records?

Absolutely. You can write, test, and debug code directly, and use the "Lab PDF" button to export a university-formatted experiment sheet complete with Aim, Algorithm, Source Code, Output, and Evaluation marks table ready to print.

How does VAB-CODE execute code without backend servers?

VAB-CODE compiles Python via Pyodide WebAssembly, runs web applications in isolated sandbox iframes, and transpiles C, C++, and Java syntax through client-side simulation engines directly on your machine's CPU.