---
title: What’s the difference between Chrome and Firefox extensions?
description: "- **Chrome**: Requires 4 icon sizes (16, 32, 48, 128), simpler submission process - **Firefox**: Requires 5 icon sizes (16, 32, 48, 128, 256), requires Gecko email, must be submitted to Mozilla Add-ons ### More Related Articles - [Will the…"
url: "https://www.smsgatewaycenter.com/blog/kb/whats-the-difference-between-chrome-and-firefox-extensions/"
updated: "2025-07-17"
category: Resellers / Browser Extension Generator
---

# What’s the difference between Chrome and Firefox extensions?

- **Chrome**: Requires 4 icon sizes (16, 32, 48, 128), simpler submission process
- **Firefox**: Requires 5 icon sizes (16, 32, 48, 128, 256), requires Gecko email, must be submitted to Mozilla Add-ons

### More Related Articles

- [Will the extension work with future SMS Gateway Center updates?](https://www.smsgatewaycenter.com/blog/kb/will-the-extension-work-with-future-sms-gateway-center-updates/)
- [What if I lose my extension files?](https://www.smsgatewaycenter.com/blog/kb/what-if-i-lose-my-extension-files/)
- [Are there any additional costs for using the extension?](https://www.smsgatewaycenter.com/blog/kb/are-there-any-additional-costs-for-using-the-extension/)

Found this useful?[Add as Preferred Source on Google](https://www.google.com/preferences/source?q=smsgatewaycenter.com)