CloudConvert is a free, online file format conversion service that lets you easily convert files from different formats. Simply select, or drag and drop, your files, select options (email when done, send to Dropbox, send to Google Drive) and off you go. As it's name implies, everything is done in the cloud with no software to download. It also works in mobile browsers so you can convert files on the go to be able to view them on your mobile device.
The send to Dropbox and Google Drive are options that most conversion services don't have. Most of them send you an email with a link that you click on to download your converted file. This makes things more streamlined.
It supports over 100 audio, video, document, archive, image, ebook, spreadsheet and presentation formats with advanced options for each.
Guest users (no login) get 5 daily conversions, with up to 2 concurrent and a 100MB file size. Registered users (can user Google+, Facebook, Twitter, or create account) get 25 daily conversions and up to 5 concurrent conversions with a 1000 MB file size.
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