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brew install grokj2klocal Homebrew formula metadata
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Install grokj2k with Homebrew
JPEG 2000 Library. Version 20.3.6 via Homebrew; verified 2026-06-27.
install
Additional install commands
overview
Package summary
JPEG 2000 Library
Project links
Commands and aliases
- grk_compress
- grk_decompress
- grk_dump
- grk_transcode
history
Project history and usage
grokj2k packages Grok, an open-source JPEG 2000 codec focused on fast encoding, decoding, transcoding, and modern JPEG 2000 features.
Project history
The Grok repository describes the project as an AGPL-licensed JPEG 2000 codec. Its command-line tools include compression, decompression, dumping, and packet-level transcoding utilities for JP2 and J2K workflows.
The project presents itself as a high-performance codec with support for High Throughput JPEG 2000, random-access decoding markers, cloud/S3-oriented I/O, metadata handling, broad pixel-format support, and bindings for several languages.
Adoption history
Grok's packaging history is tied to specialist image, geospatial, preservation, and scientific workflows where JPEG 2000 remains useful. The upstream README specifically notes integration into GDAL, making the package relevant to users who need JPEG 2000 support through geospatial tooling.
How it is used
Package users typically reach it through utilities such as `grk_compress`, `grk_decompress`, `grk_dump`, and `grk_transcode`. The transcoder can rewrite JPEG 2000 files at packet level for operations such as adding TLM and PLT markers without a full decode/re-encode cycle.
Why package nerds care
For package nerds, grokj2k sits in the same small but important corner as OpenJPEG, Kakadu, JasPer, and image-library delegates: it is not a daily shell toy, but it determines whether image stacks can process JP2/J2K data reproducibly from system packages.
Timeline
- 2016: The GitHub repository was created.
- 2020s: The project emphasized high-performance JPEG 2000, HTJ2K, transcoding, cloud I/O, and fuzz testing.
- 2020s: Homebrew packaged the command-line tools as `grokj2k`.
Related projects
- Related projects include OpenJPEG, Kakadu, JasPer, GDAL's JP2 drivers, image servers that consume JPEG 2000, and preservation workflows that use JP2/J2K assets.
Sources
security posture
No protected-tool coverage found yet
No matching local secret-handling manifest was found for grokj2k. Nucleus package metadata is still published here so future coverage has a stable package URL.
Install behavior
- No Homebrew post-install hook is recorded in formula metadata.
- Homebrew bottle metadata is available for 6 platform targets.
- Installs with 7 runtime dependencies.
- Build metadata lists 3 build dependencies.
Recommended review
Before unattended agent use, check whether the tool reads plaintext credentials, writes remote state, publishes artifacts, or shells out to plugins.
executables
Installed executables
| Command | Kind | Exposure | Note |
|---|---|---|---|
grk_compress | cli | global executable | |
grk_decompress | cli | global executable | |
grk_dump | cli | global executable | |
grk_transcode | cli | global executable |
freshness
Version and freshness
These signals separate page generation age, package-manager activity, and upstream release comparison. Version lag is warned only when an evidence URL and comparable versions are present.
page generated2026-07-10
manager version20.3.6
manager updated2026-06-27
local dataok
upstreamnot checked
latest detectednot detected
https://github.com/GrokImageCompression/grok
- infoNo cached GitHub release or tag data was available.https://github.com/GrokImageCompression/groknone confidence
install metadata
Package metadata
| Package key | brew:grokj2k |
|---|---|
| Version | 20.3.6 |
| Package manager | Homebrew |
| Package manager page | https://formulae.brew.sh/formula/grokj2k |
| Homepage | https://github.com/GrokImageCompression/grok |
| Repository | https://github.com/GrokImageCompression/grok |
| Upstream docs | https://github.com/GrokImageCompression/grok#readme |
| License | AGPL-3.0-or-later |
| Source archive | https://github.com/GrokImageCompression/grok/releases/download/v20.3.6/source-full.tar.gz |
| Last updated | 2026-06-27T22:05:09Z |
| Pulse | updated |
| Dependencies | fmt, jpeg-turbo, libpng, libtiff, little-cms2, xz, zstd |
| Build dependencies | cmake, doxygen, pkgconf |
| Bottle | available (on arm64_linux, arm64_sequoia, arm64_sonoma, arm64_tahoe, sonoma, x86_64_linux) |
| Homebrew post-install | not defined |
| Service | none declared |
registry facts
Source database details
| Source Database | Homebrew formula API |
|---|---|
| Tap | homebrew/core |
| Full Name | grokj2k |
| Version Scheme | 0 |
| Revision | 0 |
| Head Version | HEAD |
| Bottle Stable Root URL | https://ghcr.io/v2/homebrew/core |
| Deprecated | no |
| Disabled | no |
| Keg Only | no |
| URL Keys |
|
source trail
Generated from repository data
This page is generated by av-web from the private package SQLite artifact built by scripts/generate-pkg-sqlite.py.
Combined YAML source
View the package source record on GitHub.
Used sources
- Geiger risk classifier
- Nucleus package database
- av.db category and tag curation
- cross-ecosystem install command graph
- curated package history
- package relationship graph
- package version freshness
- package-page enrichment