---
title: "What is the recommended size for banners?"
slug: "what-is-the-recommended-size-for-banners"
description: "Use 580 × 150 pixel banners for clarity, engagement, and compatibility in all major email clients. See what can go wrong with a custom size."
updated: 2025-10-15T17:47:11.000Z
canonical: "https://help.opensense.com/docs/what-is-the-recommended-size-for-banners"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://help.opensense.com/llms.txt
> Use this file to discover all available pages before exploring further.

# What is the recommended size for banners?

## Overview

Use banners that are 580 × 150 pixels. This size gives a good balance of visibility and engagement, and it displays clearly in all major email clients and on all devices. The 580-pixel width is based on comprehensive testing for display quality and cross-platform compatibility.


## 580 × 150 pixels or a custom size

<div class="kb-pros-cons">
  <div class="kb-pros-cons__pros">
    <p class="kb-pros-cons__label" id="banner-size-recommended">580 × 150 pixels · recommended</p>
    <ul aria-labelledby="banner-size-recommended">
      <li><strong>Visual clarity:</strong> text and graphics stay sharp and easy to read in every viewing environment.</li>
      <li><strong>Higher engagement:</strong> research and performance data show that banners of this size get higher view rates and stronger engagement than other sizes.</li>
      <li><strong>Email client compatibility:</strong> displays well in Microsoft Outlook, Gmail, Apple Mail, and mobile email apps.</li>
    </ul>
  </div>
  <div class="kb-pros-cons__cons">
    <p class="kb-pros-cons__label" id="banner-size-custom">Custom size · possible issues</p>
    <ul aria-labelledby="banner-size-custom">
      <li>Inconsistent rendering in different email clients</li>
      <li>Image scaling issues that can affect visual quality</li>
      <li>Less visual impact on some devices or screen sizes</li>
      <li>Compatibility limits with some email platforms</li>
    </ul>
  </div>
</div>


## Using a custom size

Your banner size may need to follow brand guidelines or other design requirements. You can use a different size to meet them.

:::caution[Custom sizes can display differently]
If you choose a size other than 580 × 150 pixels, you accept the display differences listed above.
:::

## What's next

- [Banner best practices](https://help.opensense.com/docs/banner-best-practices): resolution, calls to action, animation, and Canva templates.
- [Why does my signature appear small on mobile devices?](https://help.opensense.com/docs/why-does-my-signature-appear-small-on-mobile-devices): signature width and image guidelines for mobile.
- [Signature management and deployment FAQ](https://help.opensense.com/docs/signature-management-deployment-faq): answers to other common signature questions.