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---
id: using-https-in-development
2018-10-19 19:49:55 -04:00
title: Using HTTPS in Development
sidebar_label: HTTPS in Development
---
> Note: this feature is available with `react-scripts@0.4.0` and higher.
You may require the dev server to serve pages over HTTPS. One particular case where this could be useful is when using [the "proxy" feature](proxying-api-requests-in-development.md) to proxy requests to an API server when that API server is itself serving HTTPS.
To do this, set the `HTTPS` environment variable to `true`, then start the dev server as usual with `npm start`:
### Windows (cmd.exe)
```cmd
set HTTPS=true&&npm start
```
(Note: the lack of whitespace is intentional.)
### Windows (Powershell)
```Powershell
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($env:HTTPS = "true") -and (npm start)
```
### Linux, macOS (Bash)
```sh
HTTPS=true npm start
```
Note that the server will use a self-signed certificate, so your web browser will almost definitely display a warning upon accessing the page.