How to Visualize a Customer Journey Map in Google Slides Using a Curved Line Chart

Most customer journey maps look like they were built in 1998. You know the ones. Endless chevrons, floating text boxes, and rigid arrows pointing to nowhere.

Or worse, someone decides to use a standard, jagged line chart to track customer sentiment. Suddenly, a customer's emotional experience with your brand looks like a volatile stock market ticker.

Humans don't experience a brand in sharp, angular spikes. A customer journey is organic. It has smooth highs, gradual lows, and flowing transitions between touchpoints. That’s why visualizing it with a curved line chart completely changes how your stakeholders perceive the data. It tells a story rather than just spitting out numbers.

But if you’ve ever tried to build this in Google Slides, you've likely hit a wall.

The Problem with Native Presentation Tools

Google Slides is fantastic for a lot of things, but building a sleek, presentation-ready curved line chart natively? Not so much.

Usually, you're forced to open Google Sheets, fight with the default chart settings, try to smooth the lines, strip away the ugly default gridlines, and then paste it back into your deck. If you need to tweak a data point right before your meeting, you have to do the whole dance over again.

We built ExtraChart to fix exactly this kind of workflow friction.

With ExtraChart, you can drop a publication-quality curved line chart right onto your slide, edit the data directly in the sidebar, and format it beautifully without ever switching tabs.

How to Build Your Curved Journey Map

Ready to upgrade your slides? Here is exactly how to map out a customer journey using a curved line chart inside Google Slides.

1. Launch ExtraChart

Open your presentation and go to Extensions -> ExtraChart -> Create & Edit Charts. The sidebar will pop up right next to your slide.

2. Select the Curved Line Chart

Browse through the categorized list of 20 chart types and click the Curved Line Chart icon.

3. Add Your Touchpoints and Sentiment

A detailed popup editor will appear. On the right side, click the Data tab. This gives you a simple, spreadsheet-like interface.

You want to map the timeline of the journey on the X-axis and the "Sentiment Score" (or satisfaction level) on the Y-axis.

For example, your columns might look like this:

• Touchpoint: Discovery, Website Visit, Checkout, Unboxing, Support Call, Renewal.
• Sentiment Score: 6, 8, 5, 9, 3, 7.

As you type or paste your data in, you'll see the chart preview on the left updating in real-time. The line naturally curves between your data points, instantly creating a visual "wave" of the customer's emotional journey.

4. Strip the Clutter (The Settings Tab)

A good customer journey map should look like an infographic, not a math homework assignment.

Click over to the Settings tab in the ExtraChart editor. Here is where the magic happens:

• Remove Gridlines: Turn off the horizontal and vertical gridlines. You want the curve to float cleanly on the slide.
• Hide the Y-Axis: If you are just showing the flow of emotion, the exact numerical scale often doesn't matter. Hide the axis labels for a cleaner look.
• Color Palette: Use the color manager to pick a smooth gradient or a bold brand color for the line itself.

5. Insert and Update

Click "Create" and ExtraChart will drop a crisp, high-resolution image of your curved line chart right onto the slide.

Need to adjust the sentiment score because the latest user testing came back? No problem. Just click the chart image on your slide, re-open the ExtraChart add-on, and all your data and settings will be right there. Make your tweak, and the image updates automatically.

Make Your Data Human

Customer journey maps are supposed to build empathy in your team. By swapping out jagged, harsh lines for a curved line chart, you visually communicate that you are looking at a fluid, human experience.

It takes about two minutes to set up in ExtraChart, but it makes your presentation look like you hired a dedicated graphic designer. Give it a try on your next slide deck.