SlideTalk Gives Voice–Beautifully–To Your Pictures & PowerPoint Presentations | ks3humanities |

"SlideTalk is a service where you upload either sets of images, or complete PowerPoint presentations. Once uploaded, SlideTalk adds narration via high quality text to speech that can be customized for pronunciation, reading rate, voice timbre and more. There are at least 17 languages available, and multiple voices are available for most languages. You can even  change voices or languages within a presentation."

Via Beth Dichter