2 free tools

JavaScript Developer Tools

Convert, format, validate, and generate JavaScript code directly in your browser. Folioify tools are free, require no signup, and are designed for fast local developer workflows.

JavaScript to JSON

Convert JS object to JSON in browser REPL. Free, no signup. By Folioify.

Launch tool

JavaScript to Typescript

Convert JS object to TypeScript types in browser REPL. Free, no signup. By Folioify.

Launch tool

Why use these JavaScript tools?

These tools focus on quick transformations and validation tasks that developers repeat during implementation, debugging, documentation, and migration work.

Are uploads required?

No. Tools run in the browser whenever possible, so code snippets stay on your device and can be copied out immediately.