The LQS or Listing Quality Score is an in-house algorithm that we use to measure the quality of a listing and it goes from 1 to 10 with 10 being the best possible score. It takes into account the length and keyword richness of a listing's title, its bullet points, description, as well as the number and resolution of the photos on the listing.
The LQS is an optional filter you can use in Extension and in Jungle Scout's Product Database to find products with listings you can potentially improve upon (you can also see an average LQS in the Product Tracker and the Rank Tracker).
We have a great article with more information on how the LQS can help you to find a product → Understanding the Listing Quality Score (LQS)
On the other hand, the LOS or Listing Optimization Score is a feature of the Listing Builder tool. This option lets you analyze your listing and gives you a score out of 100 points. You’ll see the score changing as you edit your listing in the Listing Builder.
Listing Optimization Score Criteria
💡 Images are retrieved directly from your listing in Seller Central. If your Jungle Scout and Amazon accounts haven't been connected we won't be able to pull this information and we would grant you the 10 points for this criterion.
For detailed information on using the Listing Builder, please read the following article 📖 Listing Builder → Feature Overview