# The State of ES5 on the Web

DevFeed: [The State of ES5 on the Web](<https://devfeed.tech/articles/the-state-of-es5-on-the-web-29530.md>)

Original publisher: [Read original article](<https://philipwalton.com/articles/the-state-of-es5-on-the-web/>)

Author: For library authors

Published: 2024-09-08T15:18:32Z

Content type: article

Language: en

Sources: [Philip Walton](<https://devfeed.tech/sources/philip-walton.md>)

Topics: [JavaScript](<https://devfeed.tech/topics/javascript.md>), [legacy](<https://devfeed.tech/topics/legacy.md>), [Web Development](<https://devfeed.tech/topics/web-development.md>), [polyfill](<https://devfeed.tech/topics/polyfill.md>), [Code](<https://devfeed.tech/topics/code.md>), [browser](<https://devfeed.tech/topics/browser.md>)

Tags: [article](<https://devfeed.tech/tags/article.md>), [browser](<https://devfeed.tech/tags/browser.md>), [build-tools](<https://devfeed.tech/tags/build-tools.md>), [code](<https://devfeed.tech/tags/code.md>), [dependencies](<https://devfeed.tech/tags/dependencies.md>), [developers](<https://devfeed.tech/tags/developers.md>), [es2015](<https://devfeed.tech/tags/es2015.md>), [javascript](<https://devfeed.tech/tags/javascript.md>), [legacy](<https://devfeed.tech/tags/legacy.md>), [polyfill](<https://devfeed.tech/tags/polyfill.md>), [recommendations](<https://devfeed.tech/tags/recommendations.md>), [web](<https://devfeed.tech/tags/web.md>)

## AI overview

This article examines whether web developers and JavaScript library authors still need to transpile code to ES5. It uses data about browser support, popular libraries, tools, and websites to offer production recommendations, while discussing the bundle-size costs of transpilation and polyfills.

## Source excerpt

Should web developers and JavaScript library authors still transpile their code to ES5? This post looks at what the data suggests based on what popular libraries, tools, and websites are doing