JP2 file extension - how to open?

Wed, 03/18/2015 - 14:08 — Haruo

A lot of the "High Resolution" page-scan images are in a format with file extension ".jp2", which my computer doesn't know how to open. When I google it, it says use Google Chrome, but that's the browser I'm using and it isn't recognizing the extension. I know it's a conmpressed format, but does that mean I need to decompress each scan the way I would, manually, a ZIP file? Or what?

Comments

Fri, 03/20/2015 - 13:56 — bdv4

High resolution jp2 files

The .jp2 extension indicates it is a JPEG2000 file. JPEG2000 is a compressed image format like JPG, except that it's lossless. You don't need to extract it like a zip file, you just need to find a viewer capable of opening it (I thought that Internet Explorer was able to do this, but trying it now it just saves the file as a download).

Sat, 03/21/2015 - 22:50 — Haruo

GeoViewer

I installed GeoViewer from LizardTech on the strength of a recommendation on a U iversity of Rhode Island webpage, and it seems to work, but oy is it cumbersome, and not finely tunable; boy it'd be nice if it were more readily openable and concertible to, say, a normal JPEG. I wonder if GIMP will handle it. And it would be nice if the hymnary.org system didn't expect church musicians to be such tech whizzes.

Sun, 06/07/2015 - 23:14 — NicoleAsh