Web Dev//npx

Node.js package runner. Executes packages from the npm registry without installing them globally.

Node.js package runner. Executes packages from the npm registry without installing them globally.

npx wrangler dev runs wrangler directly -- no need for npm install -g wrangler first

If the package is already installed locally (in node_modules/), it uses that. If not, it downloads it temporarily, runs it, and discards it.

Comes bundled with npm (which comes with Node.js). No separate installation needed.

Typical use: running framework CLIs (npx create-react-app, npx vite, npx wrangler) or one-off tools without polluting the global system