Photoshop does not allow to save as JPEG 2000

Forum|Forum|1 year ago
April 20, 2024
3 replies
2671 views

I have created a large panorama stich (45K pixel wide) which I would like to save as JPEG 2000.

But Photoshop only allows the following formats: JPEG, PSB, JPS, MPO, RAW, PNG, TIFF, WEBP.

Not JPEG 2000 - why?

Windows

This topic has been closed for replies.

thomas_bredenfeld

Community Expert

you may try the free jk2 plugin of https://www.fnord.com
it works for PS, AE, and PR and on mac and windows

Trevor.Dennis

Community Expert

Can you tell us why you need such a large document, and save in that particular format?

A

Alfred5E88Author

Known Participant

When you stich a large enough number of images, you can get pretty large image files (up to the gigapixel range).

The idea was that perhaps JPEG 2000 could store such a file in less space (i.e. more compression, but same image quality).

But why on earth wouldn't Adobe fully support JPEG 2000?

Stephen Marsh

Community Expert

Ok... Irfanview is able to convert the TIF file to JPEG 2000, but then Photoshop can't read it.

Then I saw that something called "JPEG XL" exists. Irfanview can convert the TIF image to JPEG XL and Photoshop can at least open the JPEG XL file created by Irfanview.

But perhaps this JPEG XL is even more "exotic" than JPEG 2000? So what format should we use to save very large images in a compressed format?

So what format should we use to save very large images in a compressed format?

By @Alfred5E88

When I created a 45K square RGB 8 BPC flattened file, good old JPEG was still offered as a standard Save A Copy format.

davescm

Community Expert

It would appear Photoshop's implementation of JPEG2000 saving uses a maximum width of 30,000 pixels (the same as PSD).

That is the what but, not being an Adobe developer or employee, I can't answer the why.

Dave

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