Short answer: Yes. You can use capital letters in the display URL.
An expanded text advert has one line for the Display URL. It’s shown in green on the ads. It consists of your domain name and two optional 15 character fields called the path fields. Google help on expanded text advert path fields is here.
The domain name is taken from the page the visitor eventually lands on when they click your ad. Google calls this the destination URL.
Google might show the domain name in lowercase letters even if you’ve used capital letters. They may also show it with or without the www in front of the domain name.
Google’s thoughts on the Display URL are here.
The image below comes from Google's help section on expanded text advert paths.
Want to increase your conversion rate? For free?
I’ve seen conversion rates double, triple and even 10X
after a few quick and easy changes to the enquiry form.
Subscribe now and I'll send you a free copy of my in-depth ebook High-Converting Enquiry Forms.
You're already paying for clicks. Now turn them into conversions.
Unsubscribe at any time.
How many keywords should I have in an ad group?
Grouping keywords into ad groups trips people up. This is one of the most confusing parts of building your first AdWords campaign. Getting it right almost always leads to higher CTR , better QS and a lower cost per click.
How to build a pilot campaign.
I know nothing when I take on a new client who’s never used Google Ads for lead generation. The only way to know for sure if Google Ads will work and if the relationship with the client will be comfortable is to test it. Here's how...