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TypeScript → JavaScript

Strip types and downlevel TypeScript to JavaScript using the genuine TypeScript compiler loaded into your tab, with selectable targets and module formats. Everything happens locally in your browser: nothing is uploaded, stored, or logged.

Known limitations

The TypeScript compiler is a large download and loads only when you open this tool.

Loading engine

TypeScript → JavaScript · client-side FFmpeg

FileForge is bringing FFmpeg entirely inside your browser tab — nothing uploads. Enable this tool by turning on cross-origin isolation in your deployment (see ffmpegwasm.netlify.app), or use the desktop CLI in the meantime.