Single purpose is clearly described in store listing or README

Chrome Web Store enforces a single-purpose policy (chrome-cws-single-purpose): extensions that claim to do three or more unrelated things — tab management AND ad blocking AND password management — are rejected or removed from the store. Even if the extension passes initial review, Google's automated systems flag multi-purpose behavior post-publication, which can result in suspension. A clearly stated singular purpose also reduces user confusion about what permissions the extension actually needs, decreasing install abandonment.

State your extension's single purpose explicitly in both the manifest description and the README. Limit feature claims to one primary domain.

In manifest.json:

{
  "description": "Organize and manage your browser tabs efficiently."
}

In README.md:

## Purpose
This extension focuses exclusively on tab management. It does not modify web pages, inject ads, or access passwords.

If you have secondary features, frame them as supporting tools for the primary purpose, not independent feature domains.