Free Online IDE & Code Compiler - Run Java, Python, C++, JavaScript
Run your code to see the output here
Free Online IDE & Code Compiler
The CodeTikki Online IDE is a free, browser-based code editor and compiler that lets you write, run, and debug code in multiple programming languages without installing any software. Powered by the Monaco Editor (the same engine behind VS Code), it provides syntax highlighting, autocompletion, and instant output — all in your browser.
Whether you are practicing for coding interviews, learning a new language, or testing a quick algorithm, the CodeTikki IDE gives you a fast, zero-setup environment. Write your code, click Run, and see the output immediately.
Supported Languages
The IDE supports seven programming languages, each with full compilation and execution:
- C++ — Compile and run C++17 code with standard library support
- Java — Run Java programs with full JDK support
- Python — Execute Python 3 scripts instantly
- JavaScript — Run JS code with Node.js runtime
- C — Compile and run C programs
- Kotlin — Run Kotlin programs on the JVM
- Scala — Execute Scala code with full compiler support
How to Use the Online IDE
- Select a language — Choose from C++, Java, Python, JavaScript, C, Kotlin, or Scala using the dropdown in the toolbar.
- Write your code — The Monaco editor provides syntax highlighting, autocompletion, and code formatting. Adjust the font size if needed.
- Click Run Code — Your code is sent to our secure compilation server, executed in a sandboxed environment, and the output is returned instantly.
- Review the output — Check the output panel for results. Compilation errors are highlighted in the editor with line numbers and messages.
- Copy and share — Use the Copy Code button to copy your snippet, or copy the output to share results.
Features
Monaco Editor
Powered by the same editor as VS Code — syntax highlighting, autocompletion, and multi-cursor support.
Instant Execution
Code runs on our secure server with a 10-second timeout. No local setup, no installations, no configuration.
Error Highlighting
Compilation errors are parsed and highlighted directly in the editor with line numbers and descriptive messages.
Sandboxed & Secure
All code execution is isolated in a sandbox with strict timeouts and output limits for safety.
Practice Coding on CodeTikki
The online IDE is part of the CodeTikki coding platform. After testing your code here, explore our coding problems for practice challenges across 7 difficulty levels, take coding quizzes to test your knowledge, or read our programming tutorials to learn new concepts.
Ready for a challenge? Join the Tikki Titans League — our free coding championship with 10 problems, 7 levels, and a ₹16,000 prize pool.
Frequently Asked Questions
Is the CodeTikki online IDE free?
Yes. The online IDE is completely free. No account required, no installation, no hidden fees. Just open the page and start coding.
Do I need to install anything?
No. The IDE runs entirely in your browser. Code compilation and execution happen on our server — you just need an internet connection.
Is there a time limit for code execution?
Yes. Code execution is capped at 10 seconds to keep the service responsive and fair. Output is truncated at 100,000 characters.
Can I save my code?
You can copy your code using the Copy Code button. For persistent storage and submission tracking, create a free CodeTikki account and use our coding problems section.
Which language should I start with?
If you are new to programming, Python is the easiest to start with. For competitive programming, C++ is the most popular choice. For interviews, Java is widely used. Try them all in the IDE and see which one you prefer.