The Listing Optimization Score (LOS) is a feature inside Jungle Scout’s Listing Builder that helps you evaluate how well your Amazon listing follows optimization best practices. It gives you real-time feedback as you build or edit your listing, helping you improve your chances of ranking in Amazon search results.
The score updates automatically as you enter or change content in the Content Editor, including:
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Product title
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Bullet points
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Product description
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Backend search terms
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Product images
How does the score work?
The LOS evaluates each section of your listing based on recommended character lengths and Amazon best practices. You'll see section-specific feedback so you know exactly where to improve.
💡 Note: Your listing is saved automatically as you work.
LOS Criteria & Recommendations
Here are the default values used to calculate your score:
Product Title
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Recommended: 80–150 characters
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This is the first thing your customers see (besides your main image) and is also most likely the first field that Amazon indexes when a customer performs a search. It is important to create a title that tells the customer what the product is while also including the top keywords you want to be indexed for.
Bullet Points (Product Features)
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Minimum: 5 bullet points
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Recommended Length: 85–100 characters per bullet
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These fields are meant to highlight the features of your product that you want to express to your customer. They are shown as a bulleted list on your Amazon listing and should give the customer more information and specifics about your product. Use this space to highlight important qualities such as size, measurements, count, special features, and anything that sets it apart from the competition. Also, keep in mind to include relevant keywords you have not used yet.
Product Description
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Recommended: 1,000–2,000 characters
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This is where you should describe the product in more detail. Your limit is 2,000 characters, so there is plenty of room to elaborate and give your customers some additional information. You can reiterate any details you mentioned under features as well as go into further details on the uses, makeup, features, options, or anything else you think customers would want or need to know about your product.
⚠️ If your product uses A+ Content, you’ll need to manage the description directly in Seller Central.
Backend Search Terms
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Recommended: 200–249 characters
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These are search terms that describe your product, but they won't ever be visible in your listing. These search terms help Amazon decide which listings to show when a customer performs a search, so it is important that you include keywords relevant to the product you are offering. You should not repeat words in this field and don't include any brand names or competitors' ASINs either, as these violate Amazon's TOS.
Product Images
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Recommended: 7–9 high-resolution images
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Minimum size: 1,000 px on the shortest side
- While you’re allowed nine images, only seven will be shown when a customer lands on your listing initially. So you just need seven high-quality pictures. You want to create a sort of story that relays key information to your buyers. Besides your main image, consider including lifestyle photos or infographics. Make sure your images are compliant with Amazon's Product Image Requirements
Can I adjust the LOS criteria?
Yes! If your category has different limits (e.g., title or description length), you can customize them:
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Click the pencil icon beside a section header
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Enter your custom character limit
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Click Save
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Your LOS will update automatically
💡 Tip: Some listing criteria—like character limits—may vary depending on the Amazon category you're selling in. To reflect those requirements more accurately, adjust the field limits in Listing Builder using the pencil icon. The LOS will recalculate based on your changes and give you more tailored feedback on the quality of your listing.
What happens after I optimize my listing?
Once your score reaches a Good Listing rating and the listing was imported from Amazon, you can use the Sync to Amazon button to publish changes directly.
Learn more:📘 Publishing Your Optimized Listing to Amazon
If you are working on a new listing, you’ll need to manually copy your content into Seller Central.
Additional Resources
If you need more help creating or optimizing your product listing(s), we recommend the following Amazon resources: