> For the complete documentation index, see [llms.txt](https://docs.plainproxies.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.plainproxies.com/resources/proxy-format.md).

# Proxy Format

The proxy format defines how authentication details are combined with the IP address and port. This applies to all proxy types, including Residential, Datacenter, ISP, and IPv6.

**Available Proxy Formats**

<figure><img src="/files/vdAhcwqbqVTATcbVo4M1" alt=""><figcaption></figcaption></figure>

**IP:PORT:USER:PASS**

This option is commonly used by tools that expect credentials as part of a single string rather than a URL.

**USER:PASS\@IP:PORT**

This format is widely supported by browsers, libraries, and most scraping frameworks.