I live in Canada and wanted to ask you about how can i check of a food item is halal or not? For example, for most chips, biscuits, choclates and other food items I am not sure about what to check in ingredients.

According to Shiaism, is there any specific list of haram ingredients or any online resource/website that I can refer to for determining if a certain food item is halal or not?

Now a days most of the production companies write the ingredients and some time there is a code used for some specific things. So if you are not sure about its being Halal or haram you can use it but if you are sure it has something haram you have to either call on toll free number or check it on internet.