Litmus

The advanced testing tool
for web professionals.

We've felt the pain of getting website designs to work correctly across different browsers. Not to mention designing email newsletters that work on all email clients.

Litmus makes compatibility testing easier.

Litmus is lightning-fast, reliable and affordable. It's relied upon by thousands of smart freelancers and switched-on agencies; as well as big companies like Yahoo!, Facebook and eBay.

Screenshot of Litmus Sign up for free

Designing websites?

We won't preach to you about cross-browser compatibility. We know you know it's essential your sites look great across all modern browsers.

Litmus shows you exactly how your designs look on every platform, across every popular web browser. (And the not-so-popular ones.)

Once you've finished testing, one click publishes a full compatibility report ready for review by your client or boss. It's pretty neat.

See how website testing works...

Sending email newsletters?

Getting email newsletters to look right across different email clients is a real pain. But if you don't do it, your messages could be unreadable by a large portion of your mailing list.

Litmus will show you exactly how your email is seen through the eyes of your readers, whatever email system they might be using.

When you're finished, one click publishes a comprehensive compatibility report.

See how email testing works...

“The most innovative interface I've used since Basecamp.” —Dave Rosen, XHTMLized

“Quick and pain-free customer service; very impressive! I will definitely recommend Litmus.” —David D. Lyman, Nutshell Mail

“A really useful tool that can save you a lot of wasted time and money.”
Matthew Patterson, Campaign Monitor

“Litmus reduces the headache of testing.”
Conor Wade, Touristr

We've got everything covered...

For checking your websites, Litmus tests your pages on all these browsers:

Windows browsers

  • Explorer 8.0 (Beta 2)
  • Explorer 7.0
  • Explorer 6.0
  • Explorer 5.5
  • Explorer 5.0
  • Firefox 3.0
  • Firefox 2.0
  • Firefox 1.5
  • Firefox 1.0
  • Flock 1.1
  • Google Chrome 0.2
  • Netscape 9.0
  • Netscape 7.2
  • Opera 9.5
  • Opera 8.1
  • Opera 7.5
  • Safari 3.1
  • Sea Monkey 1.1

Mac OS X browsers

  • Camino 1.6
  • Camino 1.0
  • Safari 3.1
  • Safari 2.0

Linux browsers

  • Firefox 3.0
  • Firefox 2.0
  • Konqueror 3.5

 

For your email newsletters, Litmus tests your emails on all these email clients:

Desktop email clients

  • Apple Mail 3
  • Apple Mail 2.1
  • Lotus Notes 8
  • Lotus Notes 7
  • Lotus Notes 6.5
  • Outlook 2007
  • Outlook 2003
  • Outlook 2002/XP
  • Outlook 2000

Web-based email clients

  • AOL Mail
  • Gmail
  • Gmail (older version)
  • Live Hotmail
  • Mail.com
  • Yahoo! Mail
  • Yahoo! Mail Classic

Spam filters

  • Barracuda
  • Brightmail
  • McAfee Spam Killer
  • MessageLabs
  • Norton AntiSpam
  • Postini
  • SpamAssassin