Firebase Auth Switcher

Switch between Firebase Auth Emulator users with one click

As of June 2026, Firebase Auth Switcher has 3 users in the Developer Tools category.

Usersno change0%
3
3
Ratingno change0%
— reviews
Reviewsno change0%
Version
0.1.0
Manifest V3

History

2 snapshots

Tracking since May 13, 2026.

Not enough history yet for this metric — the chart fills in as we collect more snapshots.
View as table
DateUsersRatingReviewsVersion
May 13, 20260.1.0
Jun 7, 20260.1.0
Now30.1.0

Permissions & access

Permissions
storageactiveTabscripting
Host access
http://localhost/*, http://127.0.0.1/*

Screenshots

Firebase Auth Switcher screenshot 1

About

A developer tool for projects using the Firebase Auth Emulator. Open the popup, search your emulator users, and click one to sign in as them — instantly and without touching your app's code.

How it works:
• Lists all users from your local Firebase Auth Emulator
• Forges a custom token (the emulator skips signature validation) and exchanges it for a real ID token
• Writes the auth state directly into your app's IndexedDB and reloads the page

Setup:
Open the extension settings and enter your emulator host, port, project ID, and Firebase API key. That's it.

Note: This extension only works with the Firebase Auth Emulator on localhost. It is not intended for use with production Firebase projects.

Technical

Version
0.1.0
Manifest
V3
Size
70.66KiB
Min Chrome
88
Languages
1
Featured
No

Metadata

ID
ojjaecpjhgcfpgifkphpifdmihchampe
Developer ID
u6519985a49c3e255cb414015edfd3f35
Developer Email
[email protected]
Created
May 12, 2026
Last Updated (Store)
May 12, 2026
Last Scraped
Jun 7, 2026
Website
Support URL

Data sourced from the Chrome Web Store · last verified Jun 7, 2026.