+5% to downloads (simple)

FreeMake did a small change in their sub-heading and increased their conversions by 5.04%.

Here’s what they did…

Control:
Convert free YouTube to MP3, MP4, IPhone, iPad, Android, PSP, mobile phone.
Faster and safer than any online service! No registration, no limits. 100% results.
Trusted by 100 million users.

Variation that saw 5.04% higher conversions:
Convert any YouTube clip to MP3, MP4, WMV & AVI in seconds with one click.
Free instant download – no registration or signup.

As you see – the sub-headline became shorter.

When I A/B tested my sub-headline, I also noticed that 3-line text converts better than a longer 4-line.

Source: sumo.com/stories/psychological-copy-triggers