1. Provide Thumbnail instead of Original
Pros: Give visitor a preview of your photo
Cons: Thumbnail can be copied and spread widely in Internet. People can use the thumbnail freely.
2. Post an image with down grade quality
Pros: Give visitor a preview of your photo
Cons: It can be copied and spread widely in Internet. People can use the image freely.
3. Disable Right-click in web page
Pros: Simple solution. Your image can be shown out completely.
Cons: People can print screen or save the cache file. Image is not protect actually.
4. Add invisible digital watermark
Pros: Even people copy your image and share on internet. Your copyright message can be retained.
Cons: It’s hidden, no one know your image is copyright protected. Once the image is spread over Internet, you can’t stop it even you have the copyright.
5. Don’t show image on Internet. Provide upon request
Pros: Greatly reduce the chance that the image being copied.
Cons: It is a show-stopper and visitor takes additional steps and time to view your photos.
6. Put a visible Watermark
Pros: Provide original image with a copyright statement.
Cons: The watermark may mask the original. The effect can be reduced by adjusting the opacity and position of the watermark.