Where is setting that decides embedded thumbnail size ?

Both jpeg and TIFF file specs allow for thumbnails to be embedded. However, I'm not aware of any settings in Photoshop to control whether a thumbnail is embedded, or the size of it if it is embedded.

@S_Gans - Maximise compatibility saves a flattened layer in a PSD file.

Dave

AFAIK, thumbnails are extracted and generated by whatever file browser you are using, with the help of codecs. Photoshop doesn't embed any. This is why you don't see PSD thumbnails in Explorer, for instance.

Maximize Compatibility is unrelated. It inserts a flattened composite (full size) for applications that don't have layer support (like Lightroom), or old PS versions where any given layer element may not have been invented yet.

Shot in the dark - do you have a 4K screen? Most consumer-oriented applications will then scale images up 2x to compensate, but Photoshop and other professional apps will not. So perhaps there's a discrepancy with different apps and how they handle 4K-?

I don't recall CS6 too well, but There's a setting to Maximize Compatibility, which SHOULD save a large thumbnail (made really to work with non-PS apps). If it's not set in Preferences, it should come up as an option when saving, but if you turned that off, you can enable it as a preference in https://helpx.adobe.com/photoshop/using/file-formats.html

Hi,

Just what is it about Adobe made jpg or tiff that is different to other progs ?

They will not thumbnail larger than 125x125.

I am running Extensis Portfolio 8.1.1 this is a DAM prog and creates thumbs of images and allocates and embeds keywords etc. I have used it for years and its the only prog I know of that allows creation of custom fields such as TownEtc or Aircraft vital to my needs.

I  have thumbnail making in Portfolio set to 256x256. Works fine except for any jpg or tiff saved via Photoshop which appear as 125x125 px. despite display thumbnails setting on 256x256

If I grab a jpg from internet and save it direct to the sync folder and sync the folder that gets thumbed 256x256.

I have tested from CC and also CS6, same problem.

I need to see 256px so as to make use of the prog.

Is there any setting in Pshop that might solve this ?

I have thousands of images saved in pshop thus afflicted. NIGHTMARE.

I can open a pshop saved tiff into MSpaint, save it as a .tiff then that thumbnails as 256x256.

However if I do same for a jpg it doesnt 'heal' it.

I remember another issue with Adobe made jpg differing from other progs made jpg, so what is different about Adobe jpg and tif ?

Merlin