---
title: What are the icon requirements?
description: "Icons must be: - PNG format only - Exact pixel dimensions (16x16, 32x32, 48x48, 128x128, 256x256 for Firefox) - Clear and recognizable at small sizes - Optional: You can use default icons if you don't have custom ones ### More…"
url: "https://www.smsgatewaycenter.com/blog/kb/what-are-the-icon-requirements/"
updated: "2025-07-17"
category: Resellers / Browser Extension Generator
---

# What are the icon requirements?

Icons must be:

- PNG format only
- Exact pixel dimensions (16x16, 32x32, 48x48, 128x128, 256x256 for Firefox)
- Clear and recognizable at small sizes
- Optional: You can use default icons if you don't have custom ones

### 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)