You have to click on the part that says "Reviews". Try this:
http://www.dogfoodanalysis.com/dog_food_reviews/
The foods are rated 1 Star to 6 Stars, one being the worst and 6 being the best. The different foods are listed alphabetically according to the rating. You may have to search a little, and there's hundreds of different brands listed, but it's worth the work to find it on there. They list the ingredients for each brand and then review it, giving specific reasons why it is or is not a good choice.
Some of the less desirable foods listed on here actually use a preservative that has been proven to be a
carcinogen to people ... but they still put it in dog food! And the real surprise is when you look at the list of One Star foods and see that so many of the heavily advertised brands that are supposed to be so 'healthy' (like Beneful) are rated at the very bottom! It's virtually 'junk food' for dogs!
"Wellness" is a WONDERFUL brand of food and it's not too hard to find. If your dog isn't losing weight on what she's eating now, you may want to try that Wellness Core Reduced Fat.