Choose a watermark style
Use your logo, name, or website
Keep the watermark simple and readable
Place it where it is visible but not distracting
Use a semi-transparent opacity
Match the watermark color to the photo
Add the watermark in an editing app
Batch watermark multiple photos if needed
Save a copy of the original photo first
Export the watermarked image in the desired format
Test the watermark on different image sizes
Avoid placing it where it can be easily cropped out