Convert J2K to JXL
Convert J2K images to JXL format, edit and optimize images online and free.
Drop Files Anywhere to Upload
The J2K file extension stands for JPEG 2000 Code Stream Syntax, a part of the JPEG 2000 standard developed by the Joint Photographic Experts Group (JPEG). Introduced in 2000, JPEG 2000 offers superior image compression and quality compared to the original JPEG format. The J2K codestream is highly flexible, supporting both lossy and lossless compression, and allows for scalable decoding, which means images can be efficiently accessed at various resolutions and quality levels. This makes J2K ideal for applications requiring high-quality image storage and transmission, such as medical imaging, digital cinema, and satellite imagery.
The JPEG XL (JXL) file extension, is a next-generation image format developed by the Joint Photographic Experts Group, combining Google's PIK and Cloudinary's FUIF formats. It supports both lossy and lossless compression, offering up to 60% better compression efficiency compared to traditional JPEG, while maintaining high image quality. Standardized in 2021, JPEG XL is designed for web delivery, professional photography, and digital printing, supporting ultra-high-resolution images, wide color gamuts, and advanced features like progressive decoding and multiple layers.
Select any J2K file from your device to start uploading it.
For an advanced conversion, use the J2K to JXL optional tools available on the preview page and click the Convert button.
You will be redirected to the download page to see the conversion status and download your JXL file.
To change J2K format to JXL, upload your J2K file to proceed to the preview page. Use any available tools if you want to edit and manipulate your J2K file. Click on the convert button and wait for the convert to complete. Download the converted JXL file afterward.
Follow steps below if you have installed Vertopal CLI on your macOS system.
cd to J2K file location or include path to your input file.Follow steps below if you have installed Vertopal CLI on your Windows system.
cd to J2K file location or include path to your input file.Follow steps below if you have installed Vertopal CLI on your Linux system.
cd to J2K file location or include path to your input file.