Clay doesn't have a direct Base64 image encoding feature. However, you can use the "Use AI" function for image-related tasks. For image generation, you can:
1. Click "Add column" in a Clay table
2. Select "Use AI"
3. Choose "Image generation" as the use case
4. Select a model and write a prompt
5. Set dimensions and optionally add a reference image URL
If you need to encode an existing image, you might need to use an external tool and then "write to table" the result in Clay.
What specific task are you trying to accomplish with the Base64 encoded image?