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# How to use
Send your request to the server with the port 3000 and add your URL to the "url" query string like this:
-`http://localhost:3000/?url=https://example.org` \ No newline at end of file
+`http://localhost:3000/?url=https://example.org`
+
+To show the browser window, set the environment variable `PUPPETEER_HEADFUL=1`. To use a proxy,
+set the `PUPPETEER_PROXY` environment variable, for example `PUPPETEER_PROXY=localhost:8080`.