Submission timeline
2007–2026One slot for every year since HN launched. Height is that year's peak points; orange marks a 100+ point or 50+ comment breakout. Select a bar to open its strongest thread.
Top comments
If you want to know all the details, the spec itself isn't too hard to understand either, and comes with a bunch of flowcharts on how to decode the Huffman tables and the run-length codes for each DCT block: https://www.w3.org/Graphics/JPEG/itu-t81.pdf I highly recommend writing a JPEG en/decoder as an exercise in coding; getting to the point of being able to decode almost all the images you probably have or can find on the Internet shouldn't take more than a few…
I learned the the theoretical workings of jpeg in school in the early 2000. I personally think it is easier to comprehend the different stages coming from an original picture (Bitmap). But this article illustrates again what we all just take for granted. I had the luck to learn about all the then major image types (jpeg, gif, tiff, bmp and png) in school plus the compression algorithms behind them. But I only learned about image types (Media Design school…
Previous discussion: https://news.ycombinator.com/item?id=19799650
The first top-level comment from each of the four biggest threads, in HN’s own order. Excerpts are shortened; open a comment for full context.
HN stats
- Breakout years
- 2
- Total points
- 515
- Total comments
- 47
100+ points or 50+ comments
reference only — not used in Hall rules or ranking
reference only — not used in Hall rules or ranking
Every submission
| Date | Title as submitted | By | Points | Comments |
|---|---|---|---|---|
| 2019-05-01 | Unraveling the JPEGFirst breakout · Best thread | catacombs | 399 | 41 |
| 2021-04-22 | Unraveling the JPEG (2019) | WayToDoor | 1 | 2 |
| 2022-03-08 | Unraveling the JPEG (2019)Latest 20+ point return | bb88 | 109 | 4 |
| 2023-06-22 | Unravelling the JPEG | whereistejas | 4 | 0 |
| 2024-01-26 | Unraveling the JPEGHall induction | throwup238 | 1 | 0 |
| 2025-05-14 | Unraveling the JPEG (2019) | Tomte | 1 | 0 |