4 items
Shows a rolling banner at the top of pages whose URL you registered as local, development, or production. Have you ever wiped data or shipped a deploy because you mistook production for development? This extension stops that. When you open a URL you registered, a banner with the environment name rolls across the top (or bottom) of the page. You choose the color and the name per environment, so a single glance tells you which server you are looking at. ■ Features · Register URLs per environment — local / development / production out of the box, plus staging, QA, or anything you add · Flexible patterns — localhost, localhost:3000, *.dev.example.com, dev.*, dev-*, path scoping, and regular expressions · Per-environment background and text color · Adjustable banner height, font size, scroll speed and direction, spacing, and a diagonal warning stripe · Pushes page content down by the banner height so nothing is hidden · Also offsets the site's own fixed / sticky header, which page padding alone cannot move · Click the toolbar icon to register the current URL in one step · Export and import settings as JSON so a whole team shares the same rules · Settings sync across Chrome instances signed in to the same Google account ■ Privacy No data is collected and nothing is transmitted. The extension contacts no external server and contains no analytics. It stores only what you type — environment names, URL patterns, and color settings — in Chrome storage. Page URLs are compared against your own patterns on your device only, and page content is never read. ■ Notes · Works on http and https pages; browser-internal pages such as chrome:// cannot show a banner · The close button hides the banner for that tab only; it returns in a new tab · The interface is available in English and Korean, following your Chrome language · Bundles Pretendard (SIL Open Font License 1.1)
Aug 12, 2026
rating_count is the Chrome Web Store ratings count, not a written-review count.
Media assets
Screenshots and videos on the listing.
Has promo video
Whether the listing includes at least one video.
Languages
Declared language locales.
Developer website
Listing exposes a developer website URL.
Contact email
Listing exposes a contact email.
Keyword in name
Case-insensitive substring match in the name.
Keyword in description
Case-insensitive substring match in the description.
Keyword occurrences in description
Count of case-insensitive occurrences in the description.
Category user-count percentile
Share of same-category extensions with fewer users (null if unknown).
These are transparent listing completeness / keyword signals, not a prediction of Chrome Web Store search ranking.