Login via Cookie
1
Pick a package
Choose a single detected Roblox package, or All Packages (cookies.txt) for bulk import.
2
Provide the cookie(s)
- Single package
- Bulk (All Packages)
Paste the
.ROBLOSECURITY cookie directly. It’s validated for format before use.3
Verify and inject
Each cookie is verified against Roblox before being injected — invalid cookies are rejected with an error instead of being applied.
4
Relaunch
All targeted packages are killed, windows are re-arranged (if Auto Arrange Windows is on), then each package is relaunched already logged in (staggered by 2s in bulk mode).
Cookie Login requires at least one detected Roblox package. If none are found, install/open Roblox first.
Save Cookie
Extracts the.ROBLOSECURITY cookie from every detected package (verifying each to also capture the username) and writes them all to:
username:cookie.
This file is also read as a fallback by Phantom API rejoin — if extracting a cookie directly from a package’s database fails, Phantom API falls back to whatever’s saved here.