WordPress 3.5 introduced an entirely new Media uploader which streamlined the way we handle and upload images to our posts. It all looks good except for the part where if you enter Title for your image but after publishing you realise, there’s no title field in the final image tag. Yes, WordPress 3.5 has removed the option of displaying Image Titles.
Either you modify the img tag manually each time and enter the title yourself or you can use the Restore Image Title plugin. Its a simple plugin and does nothing except that it adds the title field to your images by using the text you entered while uploading your images.
Note: It won’t add title to the images you have already published before installing this plugin. It works only on the images you upload after you install it.