Agency insights
Thoughts and lessons on client selection, burnout, pricing, and modernising legacy accounts, from someone who's run a Google Ads for years.
Published April 2021. Last updated July 2026.
Short answer: Yes. You can use capital letters in the display URL.
Longer answer.
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.

Thoughts and lessons on client selection, burnout, pricing, and modernising legacy accounts, from someone who's run a Google Ads for years.
Understand what happens after someone clicks your advert. Subjects include offline conversions, CRM integration, attribution, auditability and marketing instrumentation.
Articles about marketing, engineering, AI and problem solving that don't fit neatly into the other topics. These are some of the ideas and experiences that have shaped how I think.
Learn how to use Google Ads to generate profitable leads. Subjects include campaign strategy, bidding, targeting, optimisation and the challenges of running lead generation campaigns.
Things I've learned about high-converting landing pages. Subjects include copywriting, page structure, forms, trust, conversion rate optimisation and user experience.
Understand why some leads become customers while others don't. Subjects include diagnosing poor leads, qualification, filtering junk leads and improving the feedback you send to Google Ads.
What happens after a lead has been generated determines if Google Ads is profitable. Subjects include first contact, follow-up, quoting, lead nurturing and turning more enquiries into customers.