Is JPG lossy or lossless?

Related questions

1. How do I compress a JPEG without losing quality?
2. What's the difference between lossy and lossless?
3. Why is lossy compression beneficial?
4. Can I compress a JPEG file?
5. When would you use lossy compression?
6. How do I decrease the size of a GIF?
7. Where can I upload gifs?
8. How do I compress a JPEG online?
9. How do I compress JPEG files?
10. What does jpg stand for?

Tags

1. #stored
2. #lossless
3. #image
4. #patient
5. #compression
6. #please
7. #order
8. #degrade
9. #criticism
10. #sizes
11. #there
12. #format
13. #means
14. #large
15. #allowed
16. #detailed
17. #smaller
18. #lossy
19. #change
20. #achieve
21. #images