Online ES6 to ES5 Converter

Convert modern ES6 JavaScript code to ES5 for better browser compatibility

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About This Tool

This online ES6 to ES5 converter allows you to transform modern JavaScript (ES6/ES2015+) code into ES5 compatible code that works across all browsers. The tool uses Babel's standalone library to perform accurate transpilation of features like arrow functions, classes, template literals, destructuring, and more. Simply paste your ES6 code, configure conversion options, and get instantly converted ES5 code that maintains functionality while ensuring compatibility.

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How to Use

Paste your ES6 JavaScript code into the input editor
Configure conversion options (presets, polyfill inclusion)
Click the 'Convert to ES5' button
View the converted ES5 code in the results section
Use the copy or download buttons to save your converted code

Frequently Asked Questions

Find Quick Answers

What ES6 features does this converter support?

The converter supports all major ES6 features including arrow functions, classes, template literals, destructuring, spread/rest operators, let/const, modules, promises, and more using Babel's ES2015 preset.

Does the converter require an internet connection?

Yes, the tool uses Babel's standalone library which is loaded from a CDN. An internet connection is required for the conversion to work.

Can I convert large code files?

Yes, the tool can handle reasonably large code files, but for optimal performance we recommend converting files under 10,000 lines of code at a time.

Is the converted code production-ready?

The converter produces valid ES5 code, but you should always test the output thoroughly in your target environments before using it in production.

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