How to convert multiple images at once? (.bmp to .jpeg)

Funadddelic

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Dec 10, 2014
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Ive downloaded Fraps to take some screenshots of the games Im playing, but the thing is the free version of it supports only .BMP files which are quite large, I've only taken a dozen pictures for now and it already has more than 100 MB and since Im planning on taking many more screenshots, you can see where Im going with this. My question is, is there a program that I can download for free that can convert multiple images at once? I dont want to do one by one, I would like to select like a 30, 40, 60, 100, doesnt matter, and convert them to .JPEG. Thanks in advance!