ClonBrowser puts the proxy on the Proxy tab of the browser profile. Set Mode to Custom, pick the protocol, then either paste the whole line into Parse or fill Host, Port, Username and Password by hand. Check network runs the test; Create Browser saves the profile with the proxy attached.
Browser → New Browser → Proxy tab → Mode: Custom
Paste host:port:user:pass into the Parse field and click Parse; ClonBrowser fills the four fields.
Open ClonBrowser, choose Browser in the left menu and click New Browser in the top-left corner. The creation page opens on the Basic tab; move to the Proxy tab.

On the Proxy tab set Mode to Custom. The Parse box and the Protocol, Name, Host, Username and Password fields appear below it.

Choose the protocol that matches your port (http or socks5). Type the gateway host in Host and the port in the box after the colon, then the username and password. Or paste the full line into Parse and press Parse to fill everything at once. ExpiryTime, IP Probe Channel and Remark can stay at their defaults.

Click Check network near the bottom. Connect Test Passed shows the country, city and time zone of the exit IP. Then click Create Browser in the lower-left corner; ClonBrowser returns to the browser list with the new profile.

Check network, below the proxy fields. Connect Test Passed lists the country, city and time zone.
Open the profile from the browser list. To double-check, load the QuantumProxies IP checker inside it and compare the IP with the test result.
Copy the line from the dashboard (Proxies, your plan, the proxy generator) rather than typing it: it already carries the country, the session id and the session length in the username. The table shows what each field holds.
| Plan | Host | HTTP port | SOCKS5 port | Username shape |
|---|---|---|---|---|
| Residential Premium | residentialpremium.quantumproxies.io | 8080 | 1080 | USER-country-us-sid-k3f9a1b2-ttl-60m |
| Residential Basic | residentialboson.quantumproxies.io | 9000 | from the generator | USER-country-us |
| Mobile | mobile-us.quantumproxies.io (also -eu, -as, ww) | 8080 | 1080 | USER-country-us-type-mobile |
| Datacenter (per GB) | datacenterboson.quantumproxies.io | 9999 | 10000 | USER-type-datacenter-country-de |
| IPv6 | ipv6.quantumproxies.io | 1001 | from the generator | USER-country-us-package-ipv6 |
| ISP (dedicated IP) | the IP of your line | 8000 | on the plan page | the line's own login |
The password is the one the generator prints next to the username. Pick HTTP or SOCKS5 in the tool and use the port of that column; a port from the other column is the most common reason a check fails. USER and the session id are placeholders for your own values.
http with the HTTP port of your plan, socks5 with the SOCKS5 port. Host, username and password are identical for both.
Yes. Paste host:port:user:pass into the Parse field at the top of the Proxy tab and click Parse. Choose the protocol before you parse, or correct it afterwards.
Technically yes, through Existing Proxy, but each profile should have its own session id so that two profiles never share an IP. Generate one sticky line per profile.
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Connect in one command: npx -y quantumproxies-mcp