eBay Character Limit: The Paid Subtitle That Doesn't Affect Search

An eBay listing title holds 80 characters, confirmed directly by eBay's own seller documentation. A separate analysis of 961,668 eBay titles found listings using 75 or more of those characters consistently outperformed shorter ones — but the subtitle field, a paid add-on sellers can purchase for extra visibility, isn't read by eBay's search algorithm at all.

What 961,668 Titles Actually Showed

The study found the optimal range sits at 75-80 characters and 15-18 words — considerably more than many sellers actually use, since titles under 65 characters were shown to underperform in the same dataset. The practical implication is straightforward: eBay's title field rewards being thorough over being brief, the opposite instinct from writing a punchy headline for a platform like Twitter or a Google Ads unit.

The Subtitle: A Real Fee for Something Search Never Sees

eBay's subtitle costs between $0.50 and $6 depending on listing format, adds up to 55 characters of extra text displayed below the main title in search results, and is entirely cosmetic as far as ranking goes — Cassini, eBay's search and ranking system, does not index subtitle text for keyword matching. A seller paying for a subtitle specifically hoping it will help their listing surface in more searches is paying for something that doesn't do that; its only function is making the listing look more detailed to someone who's already looking at it.

A paid field that doesn't do what it's commonly assumed to do is a particular kind of trap — the fee itself creates an impression of functional value that isn't actually there. The subtitle isn't useless, it can genuinely help a listing look more complete in a crowded results page, but treating it as a second shot at keyword coverage is spending money on a field the algorithm never reads.

Item Specifics: Structured Fields With Their Own Ceiling

Item specifics — the structured Brand, Size, Color, Material fields that let buyers filter search results — cap each individual value at 65 characters, with up to 30 values allowed for fields that support multiple entries, and custom field names sellers create themselves are limited to 40 characters. Unlike the subtitle, item specifics are genuinely searched and filtered by Cassini — a listing missing key item specifics won't surface when a buyer filters by that attribute, even if the exact same keyword appears in the title.

The Description's Enormous, Rarely-Used Ceiling

eBay's description field technically allows up to 500,000 characters — a ceiling almost no listing approaches — but Cassini's search matching relies primarily on the title and item specifics rather than description text, mirroring the pattern seen with Apple's App Store description field. Writing a clear, useful description still matters for the buyer reading it and deciding whether to purchase, but stuffing it with keywords in hopes of improving search ranking is spending effort in a field the algorithm weighs far less than the title.

Checking a Title Against the Real Number

Since the data specifically supports using most of the 80-character title budget rather than trimming for brevity, checking a draft's exact character count against that 75-80 range — not stopping short at a shorter, punchier version — matches what the actual research on eBay titles supports. A character counter makes hitting that target range precise rather than a rough guess.

---

eBay's 80-character title rewards thoroughness, backed by data from nearly a million listings showing 75+ characters consistently outperforms shorter titles. The subtitle sits on the opposite end of that logic entirely — a paid field that looks like an SEO opportunity but isn't one, since eBay's own search system never reads it. Knowing which fields Cassini actually indexes, and which just look like they should be indexed, is what separates spending effort where it counts from spending money where it doesn't.