Why can't I add an image to my Gmail signature?

Related questions

1. How do I add a signature to my reply in Thunderbird?
2. Can you add a signature to text messages on iPhone?
3. How do I bold my signature in Thunderbird?
4. What is a vCard text message?
5. What is a virginity card?
6. What does V card mean in slang?
7. What is a vCard payment?
8. What is considered losing your virginity?

Tags

1. #signature
2. #portion
3. #support
4. #general
5. #compose
6. #images
7. #settings
8. #traditional
9. #signatures
10. #manner
11. #image
12. #doesn
13. #click
14. #insert
15. #button
16. #uploading
17. #gmail
18. #inbox