.j2k file: how to open it on Windows
21 Windows apps register the .j2k extension. Install one of them to open the file with a double-click.
About the format
- Format
- JPEG-2000 codestream
- MIME type
- image/x-jp2-codestream
- PRONOM identifier
- fmt/1794
Format data: freedesktop.org shared-mime-info and PRONOM (The National Archives, UK).
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darktablePhotography workflow application and raw developer
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IrfanViewFast and compact image viewer and converter
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XnView MPProfessional Image Viewer & Photo Management
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HoneyviewA fast, powerful, and free image viewer.
- GIMP
GIMP is an acronym for GNU Image Manipulation Program. It is a freely distributed program for such tasks as photo retouching, image composition and image authoring.
- GIMP
GIMP is an acronym for GNU Image Manipulation Program. It is a freely distributed program for such tasks as photo retouching, image composition and image authoring.
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nomacs - Image Lounge (Beta)nomacs is a free, open source image viewer, which supports multiple platforms. You can use it for viewing all common image formats including RAW and psd images.
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nomacs - Image Loungenomacs is a free, open source image viewer, which supports multiple platforms. You can use it for viewing all common image formats including RAW and psd images.
- ACDSee Free
ACDSee Free is a fast and powerful file browser, ideal for viewing RAW images, as well as searching and sorting your media libraries.
- Affinity
Award-winning integrated graphic design, photo-editing and publishing solution.
- PicPick
All-in-one design tool for everyone
- MapTiler Engine
Software for converting your data into fast zoomable maps.
- ACDSee Photo Studio Ultimate 2026
Navigate Your Creative Path and Digital Assets with AI-Powered Precision
- ACDSee Photo Studio Home 2026
ACDSee Photo Studio Home 2026 equips you with the tools to master your extensive photo collection.
- ACDSee Photo Studio Professional 2026
ACDSee Photo Studio Professional supplies you with a resourceful toolkit that blends cutting-edge, locally powered Artificial Intelligence (AI) with legendary digital asset management and sophisticated RAW image editing.
- 爱奇艺万能播放
Super Powerful Video Player
- StereoPhoto Maker
Create and manage stereoscopic images for Nintendo 3DS, 3D TVs and screens, and 3D photo cameras.
- ACDSee Gemstone Photo Editor 15
ACDSee Gemstone Photo Editor 15 is your launchpad for limitless creativity, built to fuel every graphic design and photo editing journey. Engineered for both precision and ease, Gemstone gives you the freedom to explore new creative frontiers.
- BandiView
A New Standard for Image Viewers
- PicPick
All-in-one design tool for everyone
- JT2Go
JT2Go Desktop App provides the richest feature set of all the supported platforms. The Desktop App will display not only .jt files but .vfz session files authored in the Siemens Digital Industries Software Flagship Teamcenter Visualization product.
Related guide: Change the default app for a file type in Windows