Extract preview images
There’s a script on Adobe Labs to extract as JPEGs the thumbnails and previews that you see in Lightroom 4:
Sometimes, lost or deleted photos in Adobe Photoshop Lightroom 4 still display a preview. This script allows you to extract and save those previews.
The script extracts previews for all the images that are selected at the time you run the script. It extracts poster frames for any video clips that are selected at the time. You can choose a location for these files. The previews are in JPEG format, and the name contains the size of the image, for example: _MG_0233-360×240.jpg.
Those previews saved my butt once when I lost the original RAW files. I thought was lost, but I’d generated 1:1 previews before the originals were deleted. Nice that Adobe is giving us this little workaround – I just hope none of you ever have to use it!
i have sucessfully extracted previews but they look dull, i guess colour profiles are messed up,,do you have any idea on how to fix it??
Yes, it is the profiles. Try http://regex.info/blog/lightroom-goodies/preview-extraction – I think it may get the profiles too.