mdn/content

showNotification: clarify difference between badge, icon, and image

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#42499 opened on Dec 22, 2025

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Content:WebAPIarea: Notificationshelp wanted

Description

MDN URL

https://developer.mozilla.org/en-US/docs/Web/API/ServiceWorkerRegistration/showNotification

What specific section or headline is this issue about?

parameters

What information was incorrect, unhelpful, or incomplete?

Currently there are 3 way that you can set images to your notification, badge, icon and also image

It's confusing to have so many option to choose from.

What did you expect to see?

I want to have a image schema of where all the bells and whistles goes where in the notification, how it's going to look like on different devices.

A real live demo would be super useful to see and test how it's going to behave.

Do you have any supporting links, references, or citations?

Do you have anything more you want to share?

No response

MDN metadata

Contributor guide

Tech stack
javascripthtml
Domain
documentation
Issue type
documentation
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
basic HTMLJavaScriptService Worker API
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
80
Research direction
Review the current documentation at the provided MDN file (files/en us/web/api/serviceworkerregistration/shownotification/index.md). Research the differences between badge, icon, and image in the Notification API specification. Consider creating a visual diagram or a live demo using HTML/CSS/JS to illustrate where each parameter appears on different devices. Ensure the explanation is clear and includes platform specific behavior.