GRgrokcodec·Mar 11, 2026Submission
Grok OSS JPEG 2000 Codec Beats Leading Commercial Codec
2 points · Open discussionGrokImageCompression
grok
C++2017–2026
GrokImageCompression / grok
grok
World's Leading Open Source JPEG 2000 Codec
3Distinct people
4Mentions
0Explicit recommenders
299GitHub stars
What to know before exploring
What it is
World's Leading Open Source JPEG 2000 Codec
GitHub
Where it is used
No documented product use has been verified yet.
What people are saying
No recommendation phrase was found in the indexed comments.
No classified warning is attached to this page. Read the discussions before treating silence as approval.
Also in these discussions
- uclouvain/openjpeg · linked in 2 of the same discussions
Mentioned in the same Hacker News threads. That is not proof they are substitutes.
This week on Hacker News
Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 3:03:16 PM UTC.
No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.
Mentions over time
HN mentions by year4 dated mentions
Observed mentions: 2017-03-17 17:58:32 UTC to 2026-03-11 18:21:06 UTC.
* An incomplete calendar period is marked with an outlined bar. Its count is not directly comparable with a full period.
Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.
View mention counts and date ranges
| Period | Start (UTC) | End (exclusive, UTC) | Mentions | Submissions | Comments |
|---|---|---|---|---|---|
| 2017 | 2017-01-01 00:00:00 UTC | 2018-01-01 00:00:00 UTC | 1 | 0 | 1 |
| 2018 | 2018-01-01 00:00:00 UTC | 2019-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2019 | 2019-01-01 00:00:00 UTC | 2020-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2020 | 2020-01-01 00:00:00 UTC | 2021-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2021 | 2021-01-01 00:00:00 UTC | 2022-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2022 | 2022-01-01 00:00:00 UTC | 2023-01-01 00:00:00 UTC | 2 | 0 | 2 |
| 2023 | 2023-01-01 00:00:00 UTC | 2024-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2024 | 2024-01-01 00:00:00 UTC | 2025-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2025 | 2025-01-01 00:00:00 UTC | 2026-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2026 (partial) | 2026-01-01 00:00:00 UTC | 2027-01-01 00:00:00 UTC | 1 | 1 | 0 |
What Hacker News says
4 sourcesIt certainly was a risk in 2013, when the open source libraries were slow and riddled with bugs. Today, there are two stable, well maintained and fast open source libraries available:
https://github.com/uclouvain/openjpeg
and
https://github.com/GrokImageCompression/grok
JPEG 2000 is a niche codec, but in the niches that it occupies it is the gold standard, even after 20 years:
1. digital cinema (part of the digital cinema standard) and broadcast
2. medical imaging
3. satellite imagery
For memory institutions, it still vies with Tiff as the top preservation codec.
In Is JPEG 2000 a preservation risk? (2013)> or even 20 years ago, remember JPEG2000?
Open Source JPEG2000 libraries:
- Grok, last commit 9 hours ago: https://github.com/GrokImageCompression/grok
- JasPer, last commit 5 days ago: https://github.com/jasper-software/jasper
- OpenJPEG, last commit 8 days ago: https://github.com/uclouvain/openjpeg
I didn't try them, but I think you can probably still read your 20 year old JPEG2000 files today without too much problems.
In What’s the best lossless image format?shameless plug for my JPEG 2000 codec: https://github.com/GrokImageCompression/grok . Performance currently around 1/3 Kakadu
In Guetzli: A New Open-Source JPEG Encoder