Do JPEG files lose quality?

Related questions

1. What is a JPG picture?
2. Can you convert a PDF to a JPG?
3. What is JPEG image quality?
4. Which is better JPEG or GIF?
5. What quality should I use for JPEG?
6. Is PNG better than JPEG?
7. What picture format is best quality?
8. Why is JPEG used?
9. Is a JPG file lossy or lossless?
10. What is JPEG compression quality?

Tags

1. #accumulate
2. #repeatedly
3. #editing
4. #closing
5. #false
6. #saving
7. #displaying
8. #during
9. #image
10. #without
11. #every
12. #simply
13. #opening
14. #quality
15. #session
16. #jpegs
17. #opened
18. #saved
19. #doesn