QuickManager scans all your leagues at once — optimal lineups, waiver targets, and trades — so a Sunday morning routine that used to take twelve tabs takes one click.
Managing one Sleeper league is easy. Managing ten is a chore. QuickManager turns hours of repetitive, league-by-league clicking into a few clicks that run everywhere you play.
Scan every league at once and see exactly how many points you're leaving on the bench. Pick a week, review the swaps, apply optimal lineups everywhere with one click. Bye weeks and projections are handled automatically. Optionally prioritize your latest-kickoff players into FLEX spots, so you can still pivot as early games wrap up.
Target any player and instantly see which leagues they're available in. Set FAAB bids and drops, then submit across leagues together. The Free Agent Radar surfaces the best unowned players by position, across your whole portfolio. See every claim you've already submitted — still pending, across every league — and cancel it in one click, no more checking Sleeper league by league.
Define a trade and scan every league for valid partners. Review every pending offer across all your leagues in one place — accept, decline, or withdraw without hunting league by league.
Every feature works on the free plan — you just see the results on one league at a time. Upgrade when you're ready to run it everywhere.
QuickManager connects to your existing Sleeper session — there's no account to create and no password to give us.
Add QuickManager from the Chrome Web Store (Chrome, Edge, Brave) or Firefox Add-ons (Firefox).
Open sleeper.com in any tab and sign in as usual.
Click the toolbar icon. It connects automatically and pulls in your leagues.
On iOS, QuickManager runs inside the Orion browser (free, by Kagi) — the only iOS browser that supports Chrome/Firefox-style extensions. Not Safari.
Orion supports Chrome and Firefox-style extensions natively.
Then turn on Request Desktop Website from the page-settings menu — this is what makes Sleeper generate your login token.
A floating button appears on the Sleeper page and turns blue once your token is captured.
Yes. Your login token is read locally and stored only in your browser — it never leaves your device, and QuickManager has no server that could see it.
Click "Refresh Rosters," then re-run the optimizer. Lineups are set per week, so double-check the Target Week matches the week you edited.
The engine is IDP-ready and will turn on automatically for defensive players once Sleeper publishes IDP projections — it currently doesn't, so rankings for those positions aren't available yet.
No. QuickManager is an independent tool built to work with your existing Sleeper account. It isn't affiliated with, endorsed by, or sponsored by Sleeper.
Open QuickManager and use the account management link next to your Pro badge — payments are handled by ExtensionPay and Stripe, and you're never charged without a clear renewal notice beforehand.
Last updated: July 2026
QuickManager ("the extension") is a browser extension that helps you manage your Sleeper fantasy football leagues.
We do not operate a server that receives your data. We do not collect, sell, or share your personal information, browsing history, or Sleeper credentials.
Optional Pro upgrades are processed by ExtensionPay using Stripe. Your email and payment details are handled by ExtensionPay and Stripe under their own privacy policies. The extension only checks whether your account has an active pass.
The extension communicates only with Sleeper (sleeper.com, api.sleeper.app) and, for payment status, ExtensionPay (extensionpay.com).
QuickManager is an independent product and is not affiliated with, endorsed by, or sponsored by Sleeper.
Questions about this policy or your data: quickmanagerfantasy@gmail.com
We may update this policy from time to time. Material changes will be reflected on this page.