How to transfer pictures from my computer to my iPhone?

I have pictures on my computer that I want to transfer to my iPhone. Is there a way without iTunes that I could do this?

No there's no way without itunes.
If you don't have Itunes then download it. Then you plug your iphone in to the computer. After that you open up i tunes then you click on the tab that says photos. Then you click uplaod or import whatever it says and you click the files you want. Then it will load and itll say syncing iphone to not disconnect wait till it says ok to disconnect then disconnect and voila

With 4Videosoft iPhone Transfer Platinum you can transfer pictures from your computer to iPhone. This process is possible without iTunes. The transfer speed is very fast. You can find it on the website and have a try. I'll be very glad if my suggestion works for you. Best luck!