
SalesforceProductionWarning
Help Salesforce Developers and Admins to distinguish Sandbox and Production easily by border page red.

What is SalesforceProductionWarning?
SalesforceProductionWarning is a Firefox add-on that adds a red border to the page, making it easy for Salesforce Developers and Admins to distinguish between Sandbox and Production environments. It supports Custom Domain, Lightning, VF Page, and instances numbers over 100.

Stats
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Chrome-Stats Rank
Other platforms

Summary
Help Salesforce Developers and Admins to distinguish Sandbox and Production easily by add a red border on page.
Release Note v1.5.5 update regex and support instance name [um]
Release Note v1.5.3 Fix border position and coloring. *Thanks to @ScottWalkerAU for update this version.
Release Note v1.5.2 Fix some bugs.
Release Note v1.5.1 Fix some bugs. In order to protect Full Sandbox. Add Sandbox support.
Release Note v1.5
Add Custom Domain Support Add Lightning Support
Release Note v1.3
Safety
Risk impact
SalesforceProductionWarning is risky to use as it requires a number of sensitive permissions that can potentially harm your browser and steal your data. Exercise caution when installing this add-on. Review carefully before installing. We recommend that you only install SalesforceProductionWarning if you trust the publisher.
Risk likelihood
SalesforceProductionWarning has earned a fairly good reputation and likely can be trusted.