The listing title is the single highest leverage SEO element on every secondhand marketplace. Buyers type into search bars, and the algorithm matches title keywords first. Item specifics, descriptions, hashtags, and engagement all matter, but on most platforms the title carries 60 to 80 percent of the search ranking weight. The catch is that every marketplace has a different character limit, a different “first words rule,” and a different keyword preference. A title that wins on eBay loses on Depop. This guide covers the character limits per platform, the brand first formula that adapts across them, the per marketplace rules, and the 7 title mistakes that kill clicks.
Why titles outweigh descriptions on most marketplaces
Three reasons titles do the heavy lifting in marketplace SEO.
Algorithms read titles first
Marketplace search engines parse titles before they parse descriptions. eBay’s Cassini barely reads description text at all, scoring almost entirely on title and item specifics. Poshmark, Depop, and Mercari all rank title matches above description matches in their search results. A great description with a weak title rarely surfaces.
Mobile thumbnails truncate
Most marketplace search results display titles in a thumbnail with the first 40 to 60 characters visible. The full description never shows in the results feed at all. Buyers decide whether to tap based on what they see in those first few words. Titles that bury brand or item type past character 50 lose the click.
Filters key off title plus structured fields
When buyers filter by brand, size, condition, or price, the algorithm uses title keywords plus structured field values to determine which listings match. Empty fields plus a vague title means missed filtered traffic. Strong title plus filled fields means visibility on every refinement.
If you only optimize one thing per listing, optimize the title. The marketplaces that rank descriptions at all (Poshmark, Depop) still rank them lower than titles. The marketplaces that ignore descriptions for ranking (eBay, Mercari to a large degree) leave the title as the only meaningful SEO signal you control.
The character limit cheat sheet
Every marketplace’s title rules in one table. Reference this before writing.
| Marketplace | Title limit | Mobile cutoff | Key rule |
|---|---|---|---|
| Poshmark | 80 characters | ~50 characters | Brand first, item type next, fill all 80 |
| Vinted | 70 characters | ~50 characters | Brand and item type front loaded |
| Depop | 1,000 char shared title and description | First 4 to 5 words weighted heaviest | Front load brand and key term in opening words |
| Mercari | 80 characters | ~40 to 50 characters | Brand and item type in first 40 chars |
| eBay | 80 characters | Most full title visible | Use all 80, no keyword repetition, Cassini critical |
| Grailed | No hard limit, under 7 words performs best | Most full title visible | Brand, model, era, size in 5 to 7 words |
| Whatnot | Variable, keep tight | Read in 2 seconds during shows | Brand, year, set, and one differentiator |
| Kidizen | Variable, keep tight | ~50 characters | Brand and exact kid size code (3T, 5Y) front loaded |
The brand first formula
One title structure adapts across most marketplaces. Memorize this and you can write a strong title on any platform in 30 seconds.
[BRAND] [MODEL or ITEM TYPE] [SIZE] [COLOR] [CONDITION or KEY DETAIL] [STYLE or USE CASE]
Examples:
Lululemon Align Leggings 25in Black Size 6 NWOT Yoga
Stüssy Spellout Tee Black Size L 1996 Single Stitch
Nike ACG Fleece Jacket Forest Green Medium 90s Vintage
Mango Wool Cardigan Cream Size M Oversized Knit
Brand first because brand is the most searched term in marketplace SEO. Model or item type next because it’s the second most filtered field. Size, color, and condition follow as critical buyer filters. Style or use case at the end captures long tail searches like “yoga,” “vintage,” “oversized.”
This formula uses 50 to 75 characters depending on the brand and details. It works within Poshmark’s 80, Vinted’s 70, Mercari’s 80, eBay’s 80. Adjust order slightly per platform but the brand first principle holds.
Per marketplace title rules
Poshmark
80 character limit. Mobile cuts around character 50. Use the brand first formula. Important: Poshmark has a separate brand structured field. Filling that field is required for filtered search visibility, and putting the brand in the title reinforces the keyword match. Don’t skip either. See the full Poshmark guide for the complete playbook.
Vinted
70 character limit, slightly tighter than Poshmark. Mobile cuts around character 50. Front load brand and item type. Vinted’s catalog category is structured and matters more than title for filtered search, but title keywords drive typed search results. Use cm not inches if you’re targeting European buyers. See the full Vinted guide.
Depop (the special case)
Depop doesn’t have a separate title field. The title and description share one 1,000 character field. The first 4 to 5 words function as your title. Depop’s algorithm weights those opening words heavier than anything else in the listing. A description that opens “Vintage Nike ACG fleece” hits four valuable search terms in four words. A description that opens “Hey babes! This cute” hits zero. See the full Depop guide.
Mercari
80 character limit. Mobile cuts around character 40 to 50, the harshest cutoff of any major marketplace. Front load brand, item type, size, and condition into those first 40 characters. Save modifiers for the back half of the title. See the full Mercari guide.
eBay (Cassini matters most)
80 character limit. eBay’s Cassini search algorithm uses titles and item specifics as primary ranking signals, with description text barely affecting rank. Use all 80 characters with no keyword repetition. Title research analyzing nearly a million eBay listings showed titles using 75+ characters perform measurably better than shorter titles. Pair full titles with complete item specifics for Cassini’s filtered search. See the full eBay guide.
Grailed (under 7 words)
Grailed has no hard character limit but their data shows listings under 7 words outperform longer titles. Buyers scan fast on mobile and want brand, model, era, and size at a glance. The Grailed formula: Brand + Model or Collaboration + Era + Size. Example: “Stüssy Spellout Tee 1996 L.” See the full Grailed guide.
Whatnot (live show readable)
Whatnot listings need to read in 2 seconds during a live show. Buyers are scrolling fast between auctions. Tight titles with brand, year, set, and one key differentiator (rookie, mint, autograph) win over long descriptive titles. See the Whatnot landing page for the full format.
Kidizen (exact size code matters)
Kidizen buyers filter by exact kid size codes. 3T is not size 3. 4Y is not size 4. The right format is brand first then exact size code with the T (toddler) or Y (years) suffix. Example: “Mini Boden Cord Skirt 5 to 6Y Pink.” See the Kidizen landing page.
Title keyword research method
Three free methods to find which terms drive search on each marketplace.
1. Search and watch the autocomplete
Start typing into a marketplace search bar. The autocomplete suggestions show what real buyers are typing right now. “Lululemon” autocompletes to “Lululemon Align,” “Lululemon scuba,” “Lululemon belt bag.” Those are your title keywords.
2. Top sold listings as ground truth
On platforms that show sold listings (Poshmark with the “sold” filter, eBay with the same), filter for items similar to yours and study the top sellers’ titles. The title patterns appearing repeatedly across high seller listings are the patterns the algorithm currently rewards.
3. Cross marketplace term mapping
What buyers call an item varies by marketplace. “Yoga pants” on Poshmark might be “Leggings” on Vinted and “Athleisure” on Mercari. Use the marketplace specific terminology in titles. The brand stays the same but the noun varies. Generic AI tools often miss this. The platform tuned ones don’t.
7 title mistakes that kill clicks
1. Burying the brand
“Cute black yoga pants size 6 Lululemon” puts the brand at character 35. Mobile cuts off before then. Front load: “Lululemon Align Leggings Black Size 6 25in Yoga.”
2. Using only adjectives
“Beautiful soft cozy oversized cardigan” tells the algorithm nothing. No brand, no item type filter, no size. Replace with brand first formula every time.
3. Repeating keywords
“Vintage Levi’s vintage 501 vintage jeans” wastes character space and Cassini doesn’t reward repetition. Each keyword should appear once. Repetition = ranking penalty on eBay specifically.
4. Stuffing irrelevant brands
Listing a generic black leggings as “Lululemon style yoga pants like Athleta” to capture brand search traffic. Marketplaces flag this as misleading and demote (or remove) the listing. Stay accurate.
5. Not using the full character limit (eBay specifically)
eBay listings using 50 characters when they could use 80 leave ranking opportunity unused. Title analysis of 961,000+ eBay titles found 75+ character titles perform measurably better. Fill the space.
6. Vinted title length limit confusion
Vinted’s title limit is 70 characters, not 80 like most US platforms. Sellers crosslisting from Poshmark sometimes hit Vinted’s limit and don’t realize the title got truncated. Always tune titles per platform’s actual limit.
7. Wrong size format for the platform
Listing “Size 5” on Kidizen when buyers filter for “5T” (toddler) or “5Y” (years). Listing “Medium” on Vinted when European buyers filter EU 38/40. Match the size format to the marketplace’s filter system.
Crosslisting titles: rewrite, don’t copy
The biggest crosslisting mistake is pasting the same title across marketplaces. The same item needs different titles per platform because:
- Character limits differ (Vinted 70, Mercari 80, eBay 80, Depop shared field)
- Mobile cutoffs differ (Mercari 40, Poshmark 50, Vinted 50)
- Buyer terminology differs (“yoga pants” vs “leggings” vs “athleisure”)
- First word weighting differs (Depop weights first 4 to 5 words heaviest)
- Keyword repetition rules differ (eBay penalizes, others tolerate)
The solution is platform tuned generation. AI listing tools like QuickListAI rewrite the title for each marketplace’s rules from a single input. Manual crosslisting requires you to consciously rewrite each title. Either approach works. Pasting the same title everywhere does not. See the crosslisting guide for the complete workflow.
Generate platform tuned titles in seconds
QuickListAI writes titles using each marketplace’s specific character limits, mobile cutoffs, and keyword rules. One input, eight platform tuned outputs. Works directly on the listing form via Chrome side panel.
Add to Chrome, FreeFAQ
Vinted’s title limit is 70 characters, slightly tighter than the 80 character limits on Poshmark, Mercari, and eBay. Mobile search results cut off around character 50, so front load brand and item type into the first half of the title. Crosslisters frequently hit Vinted’s 70 character cap when copying titles from other platforms, so adjust per platform.
Yes. Title analysis of nearly a million eBay listings shows titles using 75+ characters perform measurably better than shorter titles. eBay’s Cassini search algorithm uses every keyword in the title for ranking with no benefit from repetition. Fill the 80 characters with unique terms covering brand, model, attribute, color, size, condition, and key features.
Depop’s listing format combines title and description into one 1,000 character field, so the algorithm uses the opening words as the title proxy. The first 4 to 5 words are also what buyers see in mobile thumbnails. Depop’s algorithm weights those words heavier than anything else in the listing. Front loading brand and item type captures the most search variations.
No. Hashtags belong in the description (Depop, Mercari) or the dedicated tags field (Grailed). Hashtags in titles waste character space and don’t get parsed as search terms by most marketplace algorithms. The title is for keywords. Hashtags are separate. See the hashtag guide for the platform specific rules.
You can but you lose ranking on most platforms. Each marketplace has different character limits, mobile cutoffs, keyword preferences, and term conventions. A title tuned for Poshmark might exceed Vinted’s 70 character limit. A title using “yoga pants” might miss Mercari buyers searching “leggings.” AI listing tools rewrite the title per platform from a single input. Manual sellers should rewrite consciously. Pasting the same title is the worst option.
Modern AI listing tools maintain platform specific keyword maps. The same item might be tagged “yoga pants” on Poshmark, “leggings” on Vinted, and “athleisure” on Mercari based on what real buyers search on each platform. The AI also respects each platform’s character limits, mobile cutoff patterns, and keyword repetition rules. You confirm the title before publishing.
