Convert JP2 to PNG offline by JavaScript

Convert JP2 to PNG offline

Convert local JP2 files to PNG files offline by JavaScript in your web browser without any software downloads or file uploads!

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#	File Name	File Size	Actions

How to convert JP2 to PNG offline

Choose local JP2 image files, choose "PNG" as target image format, then click the "CONVERT OFFLINE" button to start offline conversions in bulk. File size can be up to 2GB.

This offline converter will try to use canvas in web browser to convert images first. The image format depends on whether your current web browser supports. For example: the latest Chrome browser supports AVIF images while some old versions don't. Then the offline converter will try to use JavaScript to convert images if your current web browser doesn't support the image format.

Name	JP2	PNG
Full name	JPEG 2000	Portable Network Graphics
File extension	.jp2, .j2k, .jpf, .jpx, .jpm, .mj2	.png
MIME	image/jp2	image/png
Developed by	Joint Photographic Experts Group	PNG Development Group
Type of format	Graphics file format	Lossless bitmap image format
Introduction	JPEG 2000 (JP2) is an image compression standard and coding system. It was created by the Joint Photographic Experts Group committee in 2000 with the intention of superseding their original discrete cosine transform-based JPEG standard with a newly designed, wavelet-based method.	Portable Network Graphics (PNG) is a raster graphics file format that supports lossless data compression. PNG was created as an improved, non-patented replacement for Graphics Interchange Format (GIF), and is the most used lossless image compression format on the Internet. PNG itself does not support animation at all. MNG is an extension to PNG that does; it was designed by members of the PNG Group.