Visual & learning
Blockly
Blockly is a library for adding visual code editing to web and mobile apps. It allows users to create code by stacking blocks, similar to Scratch, making it an excellent tool for teaching programming concepts without the need to type code.
- Created by
- First appeared
- 2012
- Official resource
- Visit the main website
Your first program
Hello, World!
// Blockly is a web-based, graphical programming language.
// Users can drag blocks together to build an application.
// No text-based 'Hello, World!' example can be provided since Blockly works through visual blocks.Keep learning
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Official resource
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Teach me the basics of Blockly. Use https://code.study/blockly as the starting point. Explain what Blockly is best suited for, when I should not choose it, how to install or try it, and then walk me through its Hello World example step by step.
Content reviewed August 2026 · Start with primary sources and verify version-specific details.