How can I easily replace raw files with jpeg format in Lightroom?

I only shoot in RAW, but for a normal travel trip I don't want to keep all photos in RAW because they occupy a lot of storage space. Is there a plugin in Lightroom to click a photo and convert the RAW format into JPEG format without reimporting into the catalog?

Answer

You likely know the advantages of shooting raw (since you usually do it), and especially on trips with their one-time photo opportunities I would always want to keep raw files. Disk space is your limiting factor, maybe because of just having an ultra book with a small SSD disk available.

My suggestion would be to shoot raw+jpg on trips, keep the raw images on your camera's card, and import only the jpgs while on the road. Back home you can import the raw duplicates onto the (presumably) large disk of your desktop computer, sync the develop and metadata settings from the jpegs and finally throw the jpegs away if you don't want to keep them.

Some large memory cards to keep the raw files are usually cheaper than upgrading an SSD disk in a laptop.