I have started a new project in which I want to include the option of searching some text strings within SVG formatted image in my web page. According to my knowledge this is not possible in any raster image format. That is why I am using xml based SVG image format. This kind of feature is already available in inkscape (a software to draw svg images) and www. wikipathways.com, where an user can search a text string inside the image.
Can anybody tell me how I can include this feature in my webpage? And also I want highlight that particular matched string.