Checker Plus for Gmail™
by Jason Savard · 1,000,000 usersGood signsNothing in the store listing stands out.
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Used by 1,000,000 peopleA large user base means problems tend to get noticed quickly.
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Actively maintainedLast updated October 14, 2026.
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Registered businessThe developer has identified itself as a trader under EU law, with a public address.
Who makes it
- Developer
- Jason Savard
- Address
- 2088 Belgrave Ave Montreal, QC H4A 2L7 CA
- support@jasonsavard.com
- Website
- jasonsavard.com
- Users
- 1,000,000
- Version
- 36.6
- Last updated
- October 14, 2026
What this page can't see
A store listing doesn't show what an extension can access on your computer, and it can't warn you later. Extensions get sold, and the next silent update can change everything.
Extension Guardian watches the extensions you have installed and warns you when one changes owner, gains new permissions or disappears from the store. Free, open source, no account.
Add to Chrome, it's free