Turn a JPEG 2000 image into a PNG. It is converted in your browser, so the file never leaves your device.
Drop JP2 files here
or choose from your computer paste with Ctrl V
from Photos or Files
Ready · other file types work too0 bytes uploaded, ever
Drop JP2 (JPEG 2000, J2K) files onto the box above, or click it to choose them. ToAny reads the file's contents to detect the type, so a wrong extension does not matter.
Press Convert. Open Options first if you want to change the defaults. The work happens in this tab.
Save the PNG, or download everything as one ZIP if you converted several files.
The JP2 to PNG converter is part of this page and runs inside your browser. Your images are never sent to ToAny or to anyone else.
Nothing has to travel to a server and back, so the conversion starts the moment you press Convert, even on a slow connection.
No sign-up, no email address and no watermark. Add several files and download them together as a ZIP.
JPEG 2000 is used for scanned archives, maps and medical images, but only Safari among the major browsers displays it. PNG opens everywhere and stores the decoded picture without further loss.
The defaults suit most files. Under Options you can resize the result.
JPEG 2000 files with a transparency channel, extra components or subsampled colour are refused for now; greyscale and ordinary colour files convert. The decoder is a WebAssembly module that downloads the first time and is cached.
JPEG 2000 replaces JPEG's blocky compression with wavelets, giving cleaner results at high compression and a true lossless mode. It never displaced JPEG on the web, but libraries and archives, DICOM medical images and cinema distribution use it. Safari is the only major browser that shows it.
Opens in Safari, Preview, Photoshop and medical, archive and cinema software; Chrome and Firefox do not display it
JP2 converterPNG stores every pixel exactly, with optional transparency. It was created as a patent-free replacement for GIF and is the standard for screenshots, logos and interface graphics. Photos saved as PNG are several times larger than the same photo as JPG.
Opens in Every browser, phone and image app
PNG converter| JP2JPEG 2000 image | PNGPNG image | |
|---|---|---|
| Stands for | JPEG 2000 | Portable Network Graphics |
| Type | Raster image | Raster image |
| Compression | Lossy or lossless (wavelet) | Lossless |
| Transparency | Yes | Yes, full alpha channel |
| Animation | No | No (the APNG extension aside) |
| Introduced | 2000, by the Joint Photographic Experts Group | 1996, by the PNG Development Group |
| Opens in | Safari, Preview, Photoshop and medical, archive and cinema software; Chrome and Firefox do not display it | Every browser, phone and image app |
| Best for | Scanned archives, medical images and digital cinema | Screenshots, logos, graphics with text or transparency |
| File extension | .jp2, .j2k, .j2c, .jpc | .png |
No. The JP2 to PNG conversion runs inside your browser, on your own phone or computer. The file is not sent to ToAny or to anyone else.
No further quality is lost: PNG stores the decoded pixels exactly. The result is identical in content.
Yes. Add as many as you like, convert them together and download each result or all of them as one ZIP.
The steps are the same everywhere because ToAny runs in the web browser: open this page in a current version of Chrome, Edge, Safari or Firefox, add the JP2 file, press Convert and save the PNG. There is nothing to install.
Pictures of up to 120 megapixels are accepted (for example 12,000 by 10,000 pixels); a larger one is refused with a message. Beyond that the limit is your device's memory, since nothing is uploaded; a computer copes with large files better than a phone.