Custom Host Banner

by andyb · Developer Tools

Manifest V3 Free

View in Chrome Web Store Data as of 15 Oct 2026

Display a custom banner on the page based on the host.

Users

533

+21 in 30 days

Rating

4.7 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#42K

#35K among extensions

Version

0.1.2

updated 15 Jun 2024

Users

monthly, 3 years

Latest, 15 Oct 2026: 533 usersMove the mouse over the chart for any month

Ratings count

monthly, 3 years

Latest, 15 Oct 2026: 3 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About Custom Host Banner

Each host can have a banner with different colour and text. I'm a developer who works on a number of products where the dev, test, uat and prod environments all look the same, so I made this extension to make it easier to see where I am. Copy and paste a url into the extension, set a banner colour and text, and then when you go to any page on that host, the banner will be displayed. There are a couple of different positioning options to help ensure it will work on most sites. The code is here: https://github.com/andyb3/custom_host_banner