Most agency portfolios are galleries: a grid of screenshots, a client name and maybe a one-line description. They look nice, but they rarely convince a buyer. This agency case study template shows how to turn finished projects into stories that help prospects trust you, and how to write them even when you do not have perfect numbers.
Quick answer: A case study that wins clients follows a simple arc: who the client was, the problem they had, why it mattered, what you did and why, the result, and a quote from the client. Keep it scannable, lead with the outcome, and match your case studies to the clients you want more of.
Why screenshot portfolios do not sell
A buyer looking at your portfolio is trying to answer one question: “Will these people solve my problem?” A screenshot shows taste, which matters, but it does not show thinking, process or results. Two agencies with similar-looking work are separated by how clearly they explain what changed for the client.
The agency case study template
1. Headline with the outcome
Lead with the result, not the client name alone. “How a family dental practice cut phone bookings by half with online scheduling” is more useful than “Smith Dental: website redesign”.
2. Snapshot box
| Field | Example |
|---|---|
| Client | Three-location dental practice, Ontario |
| Services | Website redesign, online booking, local SEO |
| Timeline | 8 weeks |
| Key result | Online bookings became the main booking channel within four months |
3. The situation
Two or three short paragraphs. Who is the client, what were they trying to do, and what was getting in the way? Use the client’s own words where you can.
4. Why it mattered
Connect the problem to business impact: lost enquiries, staff time, missed revenue, a launch deadline. This is what makes a prospect recognise themselves.
5. What you did, and why
Explain your key decisions, not every task. “We moved booking to the top of every service page because most visitors arrived on mobile from Google Maps” shows judgement. Include two or three images: before and after, a key screen, a flow diagram.
6. The result
Share numbers when you have them and permission to use them: enquiries, bookings, speed scores, rankings, revenue. If you do not have numbers, describe observable changes: fewer support calls, staff can update the site themselves, the client launched on time.
7. Client quote
One or two sentences in the client’s words, with name, role and company. Real quotes only; in the US, the FTC’s rule on reviews and testimonials prohibits fake ones (FTC).
8. Related call to action
End with a next step for readers with the same problem: “Running a multi-location practice? Book a 20-minute website review.”
How to get results data from clients
- Agree on what success means at the start of the project, and record a baseline.
- Set up analytics, form tracking and call tracking before launch.
- Check in at 30 and 90 days after launch and ask for numbers.
- Ask for permission to publish in writing, and offer to anonymise if needed.
How many case studies do you need?
Three to six strong ones usually beat a large gallery. Choose projects that match the clients and services you want more of. If you want more dental clients, a detailed dental case study is worth more than ten unrelated logos.
Where to use case studies
- On each relevant service page, not only the portfolio.
- In proposals, as a short linked summary.
- In sales emails after a discovery call.
- As LinkedIn posts, told as a story.
Case studies are the biggest fix for agencies whose websites rely on referrals. I cover the bigger picture in agency website lead generation.
How I can help
I build case study templates into agency websites so each project page has the snapshot box, story, visuals and call to action in a consistent layout that is easy to fill in. I also work with agencies as a white-label development partner. See my WordPress development service or talk to me about your portfolio.
Frequently asked questions
What should an agency case study include?
The client and their situation, the problem and why it mattered, what you did and why, the result, and a real client quote.
How long should a case study be?
Usually 500 to 1,000 words with a scannable snapshot box and a few images. Long enough to tell the story, short enough to skim.
What if I do not have numbers for my case study?
Describe observable changes instead, such as fewer calls, faster updates or a successful launch. Plan to collect data on future projects from day one.
Do I need client permission for a case study?
Yes. Get written permission, especially for names, logos, quotes and results. Offer to anonymise details if the client prefers.
Should case studies be on service pages?
Yes. A short case study summary on the relevant service page often does more for conversions than a separate portfolio page.
