It’s time to Get Firefox.
A (long) while ago, Mozilla had copy-pastable banners for their products. Users that supported e.g. Firefox could put a small “Get Firefox” banner on their website to promote the browser.
Sadly this is no more, but I’ve found some snapshots on the internet archive.
Below, for your pleasure, are code snippets to integrate these into your website. I’ve reuploaded the required images to my CDN since the original links are no more.
Get Firefox

<a href="//getfirefox.com">
<img
alt="Get Firefox"
title="Get Firefox - The Browser, Reloaded."
src="https://geo.thei.rs/assets/firefox/get_1.gif"
width="110"
height="32"
border="0">
</a>
<a href="//getfirefox.com">
<img
alt="Get Firefox"
title="Get Firefox - The Browser, Reloaded."
src="https://geo.thei.rs/assets/firefox/get_2.png"
width="80"
height="15"
border="0">
</a> 
<a href="//getfirefox.com">
<img
alt="Get Firefox"
title="Get Firefox - The Browser, Reloaded."
src="https://geo.thei.rs/assets/firefox/get_3.png"
width="110"
height="32"
border="0">
</a> 
<a href="//getfirefox.com">
<img
alt="Get Firefox"
title="Get Firefox - The Browser, Reloaded."
src="https://geo.thei.rs/assets/firefox/get_4.png"
width="88"
height="31"
border="0">
</a>
The browser you can trust

<a href="//getfirefox.com">
<img
alt="The browser you can trust - Firefox"
title="Get Firefox - The browser you can trust."
src="https://geo.thei.rs/assets/firefox/trust_1.gif"
width="120"
height="60"
border="0">
</a>
Web Browsing Redefined

<a href="//getfirefox.com">
<img
alt="Get Firefox - Web Browsing Redefined."
title="Get Firefox - Web Browsing Redefined."
src="https://geo.thei.rs/assets/firefox/redefined_1.png"
width="178"
height="60"
border="0">
</a>
<a href="//getfirefox.com">
<img
alt="Get Firefox - Web Browsing Redefined."
title="Get Firefox - Web Browsing Redefined."
src="https://geo.thei.rs/assets/firefox/redefined_2.png"
width="178"
height="60"
border="0">
</a>
The Browser, Reloaded

<a href="//getfirefox.com">
<img
alt="Get Firefox - The Browser, Reloaded."
title="Get Firefox - The Browser, Reloaded."
src="https://geo.thei.rs/assets/firefox/reloaded_1.png"
width="305"
height="150"
border="0">
</a>
<a href="//getfirefox.com">
<img
alt="Get Firefox - The Browser, Reloaded."
title="Get Firefox - The Browser, Reloaded."
src="https://geo.thei.rs/assets/firefox/reloaded_2.png"
width="178"
height="60"
border="0">
</a>
Take Back the Web

<a href="//getfirefox.com">
<img
alt="Get Firefox - Take Back the Web."
title="Get Firefox - Take Back the Web."
src="https://geo.thei.rs/assets/firefox/takeback_1.png"
width="305"
height="150"
border="0">
</a>
<a href="//getfirefox.com">
<img
alt="Get Firefox - Take Back the Web."
title="Get Firefox - Take Back the Web."
src="https://geo.thei.rs/assets/firefox/takeback_2.png"
width="178"
height="60"
border="0">
</a>
Credit to Steven Garrity, Jon Hicks, and David Tenser for contributing to the original page from 2004.
Mozilla Firefox and the Firefox logo are trademarks of The Mozilla Foundation.