JPG -> JXL lossless creates even bigger file

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Jack_Brody
Posts: 5
Joined: Sun Mar 13, 2022 10:49 am

JPG -> JXL lossless creates even bigger file

Post by Jack_Brody »

Last year I played with cjxl and transcoded JPGs to JXLs. I remember that lossless transcode created about 20% smaller file and the reverse process with djxl created the original file. Which was just what the developers promised.

Well, I have just updated to XnView 1.4.0 and losslessly transcoded one of my 3,5 MB JPG to get 7 MB (!) JXL. What did I do wrong?
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xnview
Author of XnView
Posts: 39414
Joined: Mon Oct 13, 2003 7:31 am
Location: France

Re: JPG -> JXL lossless creates even bigger file

Post by xnview »

trasnscoded is not yet supported
Pierre.