What do JPEG numbers mean?

Related questions

1. Is JPG a video format?
2. Is Avi a good video format?
3. What is the difference between mp4 and mpeg4?
4. What is I frame interval?
5. What is AVI JPEG format?
6. Which one is better x264 or x265?
7. Which is better 720p or 720p x265?
8. Can Windows Media Player convert AVI to mp4?
9. What is the difference between h264 and h265?
10. Which is better JPEG or HEIC?

Tags

1. #format
2. #photos
3. #compression
4. #since
5. #popular
6. #colors
7. #store
8. #cameras
9. #during
10. #quality
11. #still
12. #algorithm
13. #lossy
14. #stands
15. #digital
16. #supports
17. #experts
18. #commonly
19. #group
20. #image
21. #joint
22. #process
23. #meaning
24. #photographic