CodeSwing – A CodePen-like interactive playground, built into VS Code
VS Code extension for building web applications ("swings") using a interactive and editor-integrated coding environment - lostintangent/codeswing
CodeSwing – A CodePen-like interactive playground, built into VS Code launched on December 26, 2020 with 159 votes, #179 of 3,242 launches that month and more than 95% of that year's launches. The site was still online in September 2026, 5 years on.
In plain words
CodeSwing is an interactive playground extension for VS Code that functions similarly to CodePen. It allows developers to write and preview HTML, CSS, and JavaScript code in real-time within their editor without leaving their development environment. The tool is designed for developers who want to experiment with web code, prototype ideas, and test snippets quickly while maintaining their existing VS Code workflow.
written from the facts on this page · September 2026
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