How To Add Alt Text In Excel: Accessibility Made Simple

I still remember the first time a screen reader user told me my spreadsheets were unusable. That moment changed how I think about Excel forever.

Adding alt text takes under 30 seconds per image but makes your data accessible to everyone. The process works the same in Windows or Mac versions, just right-click any shape, picture, or chart and select “Edit Alt Text”.

You’ll describe charts as “Bar chart showing Q2 sales by region” or images as “Company logo – blue circle with white text”. Screen readers turn these into spoken words, giving context that would otherwise be lost.

This isn’t just good practice—it’s required for many organizations. And honestly, it’s the easiest accessibility win you’ll make all week.

What Youll Need

Instructions

Here’s the straightforward method I use to make spreadsheets accessible to everyone.

Open your Excel file and navigate to the worksheet containing the element you want to describe. Click on the object—whether it’s a chart, image, shape, or SmartArt—to select it. You’ll see the Format tab appear in the ribbon, confirming the selection is active.

If you’re working with multiple objects, hold Ctrl while clicking to select them all at once. This lets you add the same description to several elements simultaneously, saving time when dealing with groups of related graphics.

With the object selected, go to the Format tab in the ribbon. On the far left, you’ll find the Alt Text option in the Accessibility group. Click it to open the sidebar panel.

The panel will display two fields: Title and Description. The title is optional but helpful for screen readers, while the description is where you’ll provide the meaningful context that makes your content accessible.

In the Description field, type a concise yet informative summary of the object’s purpose or content. For charts, include the type, data range, and key trends. For images, describe what’s depicted and why it matters in the context of your spreadsheet.

Keep descriptions under 250 characters for optimal screen reader compatibility. Avoid phrases like “image of” or “chart showing”—screen readers already announce the object type. Focus purely on the meaningful content.

After adding descriptions, right-click the object and select Edit Alt Text to review your entries. Check for typos and ensure each description accurately represents the object’s purpose in the worksheet.

To test, use a screen reader like Narrator in Windows or VoiceOver on Mac. Navigate to the object and verify the description is read clearly and in context. If it sounds confusing or incomplete, revise until it conveys the right information on first hearing.

Tips and Common Mistakes

Here’s what I’ve learned from years of making spreadsheets accessible that will save you time and frustration.

Selection Efficiency: In Step 1, when selecting multiple objects, remember that holding Ctrl lets you add the same description to several elements at once. This is especially useful for groups of related charts or images, saving you from repetitive work. I use this trick constantly when updating dashboards with multiple visual elements.

Description Precision: For Step 3, that 250-character limit isn’t arbitrary—it’s the sweet spot for screen reader compatibility. I’ve found that descriptions between 150-200 characters work best, giving enough context without overwhelming users. Always ask yourself: would this description make sense to someone who can’t see the visual?

Testing Protocol: Step 4’s suggestion to use Narrator or VoiceOver is gold. I recommend testing with both if possible, as they interpret alt text slightly differently. Also, have a sighted colleague navigate your spreadsheet using only the screen reader to catch any confusing descriptions you might have missed.

Frequently Asked Questions

Adding alt text in Excel is a simple yet powerful way to make your spreadsheets more accessible. Start using it today to ensure everyone, including screen reader users, can understand your data. Next, explore other accessibility features in Excel to create inclusive content effortlessly! 🌟