# suprswitch — full briefing

> suprswitch is a free extension for Chrome and Chromium browsers and Firefox that lets you switch between your
> Google accounts with a keyboard shortcut. Hold a modifier key, press a number,
> and you land in that account in the *same tab* in under a second — no avatar
> menu, no new tab, no waiting.

- **Name:** suprswitch
- **What it is:** a Manifest V3 browser extension for Chrome and Chromium browsers (Edge, Brave, Opera, Arc, Vivaldi, Comet) and Firefox and Firefox-based browsers (Zen, LibreWolf, Waterfox)
- **Category:** productivity / account switcher / Google Workspace utility
- **Price:** free — no account, no sign-up, no paid tier
- **Website:** https://suprswitch.xyz
- **Install:** https://chromewebstore.google.com/detail/suprswitch-account-switch/mmnnelfhickmgpdienobikocjopndjeg
- **Maker:** emaitchess (https://emaitchess.com/?utm_source=suprswitch&utm_medium=llms&utm_campaign=product-credit)

## The problem it solves

If you are signed into more than one Google account — work, personal, a side
project, a client — switching between them in the browser is slow. The usual way
is "the avatar dance": click your profile avatar, wait for the menu, find the
account, click it, and wait for a *new tab* to load — losing your place. That is
roughly four clicks and a new tab on every single switch, and people do it dozens
of times a day without noticing the cost.

suprswitch replaces that with two keys and zero new tabs.

## How it works

1. You pick a modifier key once: Alt (shown as **Option** on macOS), Control, or
   Shift.
2. On any Google page, you hold that modifier and press a digit **0–9**.
3. suprswitch switches the current tab to that Google account in under a second.

The digit corresponds to the account's index in Google's own ordering, but you do
not have to memorize numbers: the extension labels each account with the account's
**name and photo**, read from Google **on your device**, so you choose by who you
are rather than by an opaque index.

You can also open an on-screen **switcher**: hold the modifier and press the
backtick `` ` `` — the key above Tab — to bring up a centered list of your accounts,
each with its name and photo. It behaves like your
operating system's app switcher — the highlight advances as you tap the key (Shift
reverses; arrow keys work too), and releasing the modifier switches to the
highlighted account. Pressing a digit jumps straight there; Escape cancels.

The default modifier is **Alt** (**Option** on macOS) — the one modifier that
never collides with Chrome's `Ctrl`/`Cmd`+number tab shortcuts. A first-run welcome
screen lets you pick a different one and try a switch before you start.

### The mechanism (for technical readers)

Google encodes the active account directly in the URL — either as a path segment
(`/u/<n>`, e.g. `mail.google.com/mail/u/1/`) or as a query parameter
(`authuser=<n>`). suprswitch switches accounts by **rewriting that account
segment of the URL in place**, preserving the rest of the URL (path, query, and
client-side state such as Gmail's `#search/…` hash). Because the switch is just a
URL rewrite on `*.google.com`, it covers **every Google app automatically** —
including apps the extension has never seen and new apps Google ships — with no
hand-maintained per-service list. When a freshly opened app has no account marker
yet, the extension adds the correct one, learning each host's pattern from any URL
it sees that already carries a marker.

## Features

- **Switch by who, not a number.** The popup and the on-screen switcher show each
  account's name and photo (read locally from Google), not indexes like 0 / 1 / 2.
- **On-screen switcher.** Hold the modifier and tap the key above Tab to open a
  centered account switcher and cycle through your accounts app-switcher style —
  hold, tap to move, release to switch.
- **Smooth on busy pages.** When you switch, suprswitch can skip the browser's
  "Leave site? — unsaved changes" prompt (only for switches you trigger; on by
  default, toggleable), so rapid switching isn't interrupted.
- **Every Google app, automatically.** Gmail, Drive, Docs, Sheets, Slides,
  Calendar, Meet, Gemini, Messages, Maps, Keep, Photos, and more — anything on
  google.com. Nothing to configure per app.
- **Always the right account.** Set a default account; typing or bookmarking any
  Google URL opens the account you actually meant, instead of whatever was last
  active.
- **Customizable shortcut.** Choose Alt/Option, Control, or Shift as your
  modifier, plus a digit 0–9.
- **Private by design.** No account to create, no tracking, no analytics. Account
  names and photos are read on your device and never sent anywhere.
- **Instant and in place.** The switch happens in the tab you are already on, in
  under a second — no new window, no lost draft, no waiting.

## Privacy

suprswitch collects no data. There is no analytics and no tracking. Account names
and photos are read locally in the browser to label the account picker and are
never transmitted off the device. The extension requests only the minimal browser
permissions it needs to read the active tab's URL and navigate it.

## Platform notes

- The modifier label is OS-aware: **Option (⌥)** on macOS, **Alt** on
  Windows/Linux.
- suprswitch is a Manifest V3 extension for Chrome and Chromium browsers (Edge, Brave, Opera, Arc, Vivaldi, Comet) and Firefox and Firefox-based browsers (Zen, LibreWolf, Waterfox). It targets `*.google.com` apps.

## How it compares

- **vs. Chrome's built-in avatar menu:** the avatar menu requires several clicks
  and opens a new tab; suprswitch switches in the same tab, from the keyboard, in
  under a second.
- **vs. other account-switcher extensions:** most identify accounts only by
  number; suprswitch labels them by name and photo, and covers all Google apps via
  URL rewriting rather than a maintained service list.

## FAQ

**Does it cost anything?**
No. suprswitch is free, with no account and no sign-up.

**Is my data safe?**
Yes. Your account names and photos are read on your device and never sent
anywhere. There is no tracking and no analytics.

**Which key do I press?**
Your pick — Alt/Option, Control or Shift — then a number
0–9. You can change it anytime in the extension popup.

**Does it work in every Google app?**
If it lives on google.com, yes — Gmail, Drive, Docs, Calendar, Meet, Gemini,
Messages, Maps and more. Because it switches the account in the URL, new Google
apps work without an update.

**Which browsers does it work in?**
Chrome and Chromium browsers (Edge, Brave, Opera, Arc, Vivaldi, Comet) from the
Chrome Web Store, and Firefox and Firefox-based browsers (Zen, LibreWolf, Waterfox)
from Firefox Add-ons.

**How is it different from Chrome's avatar menu?**
The avatar menu takes several clicks and opens a new tab. suprswitch jumps to the
account in the same tab, from the keyboard, in under a second.

## Links

- Website: https://suprswitch.xyz
- Install (Chrome Web Store): https://chromewebstore.google.com/detail/suprswitch-account-switch/mmnnelfhickmgpdienobikocjopndjeg
- Install (Firefox Add-ons): https://addons.mozilla.org/firefox/addon/suprswitch/
- Homepage as Markdown: https://suprswitch.xyz/index.md
- Concise index for LLMs: https://suprswitch.xyz/llms.txt
- Maker: https://emaitchess.com/?utm_source=suprswitch&utm_medium=llms&utm_campaign=product-credit