eBay's Cassini search engine decides which listings appear first when buyers search. Your listing title is the single most important factor in that decision. Yet most sellers still write titles like "Nice Shirt Good Condition Fast Shipping!!!" and wonder why nobody finds their items.

How eBay Search Actually Works

Cassini, eBay's search algorithm, ranks listings based on several factors:

Keyword relevance: Does the title contain the words the buyer searched for?
Listing quality: Photos, item specifics filled in, complete description
Seller performance: Feedback, shipping speed, return rate
Engagement signals: Click-through rate, watch count, purchase rate

You can't easily change your seller metrics overnight, but you CAN optimize your title immediately — and that's where the biggest wins are.

The eBay Title Formula

Use all 80 characters. Every character you leave blank is a missed opportunity for a keyword. Here's the formula that works:

[Brand] [Product Type] [Key Attribute] [Size/Capacity] [Color/Pattern] [Condition] [Model/Style Number]

Real Examples

❌ Bad: "Nike Shoes Men's Size 10" (29 characters — 51 wasted)
✅ Good: "Nike Air Max 270 React Men's Running Shoes Size 10 Black White CW7474-001 New" (79 characters)
❌ Bad: "Vintage Pyrex Bowl" (18 characters)
✅ Good: "Vintage Pyrex 403 Primary Blue 2.5 Qt Mixing Bowl 1940s Nesting Kitchen Retro" (79 characters)

Title Optimization Rules

Do:

Include the brand name first (most buyers search by brand)
Use the full product name and model number
Include size, color, and material — these are common search modifiers
Add condition keywords: New, NWT, NWOT, EUC, Vintage
Use the style/SKU number if the item has one
Think about what a buyer would type into the search bar

Don't:

Use ALL CAPS (looks spammy, doesn't help ranking)
Add filler words: "Nice," "Great," "Wow," "L@@K"
Include shipping info: "Free Shipping" (use the shipping settings instead)
Use exclamation marks or special characters
Repeat words (eBay may penalize keyword stuffing)
Use abbreviations buyers won't search for

How to Research Keywords

The best keywords are the ones buyers actually type. Here's how to find them:

eBay search bar: Start typing your product name and see what eBay auto-suggests. Those suggestions are real searches.
Sold listings: Filter by "Sold items" and look at what titles successful sellers used.
eBay Terapeak: If you have a Store subscription, Terapeak shows actual search volume data.
AI tools: EbSnap generates SEO-optimized titles automatically by analyzing what keywords top-selling comparable listings use.

Item Specifics: The Hidden SEO Boost

Many sellers skip item specifics because they're tedious to fill in. Don't. Cassini uses item specifics as secondary ranking signals, and buyers use the sidebar filters (brand, size, color) which only work if your item specifics are filled in.

The most important item specifics for SEO:

Brand (required for most categories)
Size / Dimensions
Color
Material
Condition description
Model / MPN (Manufacturer Part Number)
Style / Type

This is another area where AI tools shine. EbSnap automatically detects and fills item specifics from your photos — brand, size, color, material — saving you from the most tedious part of listing creation.

Description SEO

While the title carries the most weight, your description also contributes to search ranking. Best practices:

Repeat your main keywords naturally in the first paragraph
Use proper HTML formatting (headers, bullet points, bold text)
Include measurements, dimensions, and specific details
Mention compatible items or use cases (e.g., "compatible with iPhone 15 Pro Max")
Don't stuff keywords unnaturally — Cassini can detect this

Testing and Iterating

If an item isn't selling after two weeks, revise the title. Look at what sold listings in the same category used for keywords. Try different keyword orders — putting the most-searched term first. eBay gives you impression and click data in Seller Hub that tells you if people are finding your listing but not clicking (title/photo problem) or not finding it at all (keyword problem).

The Shortcut

Manually researching keywords, checking character counts, and optimizing every title gets exhausting when you have dozens of items to list. This is exactly what AI listing tools were built for. Tools like EbSnap analyze successful comparable listings and generate titles that follow all these SEO rules automatically — using the right keywords, in the right order, at the right character count. It's not just faster; it's often more accurate than what most sellers would write manually.

eBay Listing SEO: How to Write Titles That Actually Sell