Lightroom doesn't offer the user any scope for altering the algorithm used for JPEG. So, you're stuck with the workaround.
BTW, if you're on-line print house can't handle JPEGs from Lightroom I'd be looking for another print house.
Agree with Ian. If your print house can't take your JPEG - you need a new printer.
By defaut it is always in Jpeg Progressive
If that's true, then the feature request in the feedback forum for progressive jpeg, and the plugins which support progressive jpeg output options make no sense.
Are you sure about it?
Anyway, you can output in non-progressive format by choosing "optimize" option in one of the plugins referenced in the above-linked-to thread. Or if you prefer to avoid plugins, execute jpegtran -copy all -optimize infile.jpg outfile.jpg from the command line instead (download jpegtran first).
Jpegs will more likely be readable afterward.
PS - DPP4 could not read jpegs output by Lightroom 5.5 either, nor could a myriad of other apps, so it may not be that you're just using a bum print service.
Which version of Lightroom are you using?
Hi thanks for your help
I use Lr 5.6
Someone put that Lr do not export in Progressive, but remove his message ???
I check a big file with his site to check and according to it, it is not progressive !!!
It is the Photo site that told me that was the cause of rejection. Maybe Lr save by default in Baseline optimized
and their site do not accept that !!!
OK, so not progressive by default, but something else your print site doesn't like.
If I were you, I'd try one of the jpegtran-based plugin solutions, since those jpegs have been known to be readable by more software without any loss of metadata and no changes to image data.
Either that or use a different print house of course..
Also, consider coughing up the name of the print house and a sample jpeg in a bug report to Adobe:
I spoke with the printing house, and they are sure it is the progressive jpeg that
cause the problem, and that all site that use Silverlite to handle their files will
have the same problem !!!
Thanks again for your help and idea
Thanks for the info Jules, but something is still not making sense.
Lightroom outputs non-progressive jpegs (I just verified this - Lr5.6), yet site says they couldn't deal with a progressive jpeg from Lightroom.
I'm inclined to think your site rep is mistaken.
But the point is: It's possible for Lr to output jpegs unreadable by other software.
Lr 5.5 was notorious for outputting unreadable jpegs, but Adobe fixed most (maybe not all) such compatibility issues in Lr5.6.
Not sure what else to say (options for convenient fix have already been posted above).
Please let us know how it turns out.. - thanks,