The ability to upload nearly any file to Dropbox on your iOS device has been sorely absent. Outside of the dedicated app allowing you pick and upload a photo from within the app, uploading files was near impossible unless a third-party app supported Dropbox.
A recent update to the Dropbox app changes this dynamic, however, by allowing you to upload files from anywhere using iOS 8's share extension.
Before you can begin sending files to your Dropbox account, you'll need to download the latest update from the App Store.
Once that's over with, you only need to enable the Dropbox extension from a share sheet. The easiest way to do so is the launch the Photos app, select a photo and tap on the Share button.
Scroll the bottom row of icons to the left, until the More button is present. Tap on it, then slide the switch located next to Save to Dropbox to the On position. Before pressing Done, take the time to rearrange your sharing options if you so desire.
Back on the Share sheet will be the Dropbox icon. Tapping on it will ask you to select where you'd like to save your file. Once you start using it, previous locations will show up in a list making it easier to repeat the process without much work.
The next time you tap on the share button when a file is involved, Dropbox will be waiting, begging for your attention. And attention it will undoubtedly get.