Amazon Character Limits 2026: The Complete Technical Reference

The short answer: Amazon product titles allow 200 characters (mobile shows ~70-80), bullet points allow 500 characters each with only the first 1,000 bytes indexed, descriptions allow 2,000 characters, and backend search terms allow 249 bytes in US/UK/EU, 500 bytes in Japan, and 200 bytes in India. The backend limit is measured in bytes, not characters. Exceeding it by one byte silently de-indexes every backend term you’ve added.

That bytes-vs-characters distinction is the single most expensive mistake on Amazon listings. Industry estimates put silent backend de-indexing at around 47% of listings, and most sellers never notice because Seller Central doesn’t warn you. This guide is the complete technical reference: every field, every marketplace, the UTF-8 encoding rules that trip people up, and how to count what Amazon actually counts.

Most guides say “200 characters for the title” and stop there. This reference explains why a 180-character title with emojis can exceed limits while a 250-character ASCII-only title fits inside them. The unit Amazon counts isn’t always characters. It’s bytes.

What this page covers: the technical character and byte limits across every listing field. If you’re looking for how to write a title that ranks within those limits, see Amazon product title optimization. For backend strategy specifically, see Amazon backend keywords.

What Are All Amazon’s Character Limits? (Master Reference Table)

Amazon enforces hard limits on every listing field. Titles cap at 200 characters in most categories, bullets at 500 characters each, descriptions at 2,000 characters, and backend search terms at 249 bytes. The table below covers the US, UK, and EU. Always confirm the per-category limit inside Seller Central, since some categories (notably Apparel and Pet Supplies) cap titles much shorter.

Field	US/UK/EU Limit	Japan Limit	India Limit	Mobile Display	Notes
Product Title	200 characters	200 characters	200 characters	~70-80 chars visible	Category variations exist
Bullet Points	500 chars/bullet (varies)	500 chars/bullet	500 chars/bullet	Full display	Only first 1000 bytes indexed
Product Description	2000 characters	2000 characters	2000 characters	Full display	HTML no longer supported
Backend Search Terms	249 BYTES	500 BYTES	200 BYTES	N/A	Exceeding de-indexes ALL terms
A+ Content Text	Varies by module	Same	Same	Full display	150-6000 chars per module

The numbers above are the visible rules. The hidden rule is the one that costs sellers the most traffic: backend search terms are measured in bytes, not characters. The next section explains why that distinction matters.

What Is the Difference Between Bytes and Characters?

A character is what a shopper sees. A byte is the storage unit Amazon counts. For plain English text, one character equals one byte, so the distinction never matters. For anything else, it does. Umlauts use 2 bytes per character. Japanese characters use 3. Emojis use 4 or more. Backend search terms are stored as UTF-8, which is why Amazon counts bytes instead of characters in that field.

Here is how each character class consumes bytes:

1. ASCII Characters (1 byte each):
   • English letters (A-Z, a-z), numbers (0-9), and basic punctuation (., !, ,) each use one byte.
   • Example: keyword = 7 characters = 7 bytes.
2. Extended Latin Characters (2 bytes each):
   • European language characters with accents need two bytes each.
   • Examples: German umlauts (ä, ö, ü, ß), French accents (é, è, ç), and the Spanish ñ.
   • Example: größe = 5 characters = 7 bytes (g + r + ö + ß + e, where ö and ß are 2 bytes each).
3. CJK Characters (3 bytes each):
   • Chinese, Japanese, and Korean characters use three bytes each.
   • Example: 「キーワード」 (“keyword” in Japanese) = 5 characters = 15 bytes.
4. Emojis (4+ bytes each):
   • A basic emoji is 4 bytes. Compound emojis with skin-tone or family modifiers can run to 25 bytes or more.

This is the part that breaks backend search terms in international marketplaces. With a 249-byte limit, a US seller writing in ASCII gets 249 characters of room. A German seller using umlauts gets closer to 200. A Japanese seller using kana gets about 83.

What Are Amazon’s Title Character Limits by Category?

Title limits depend on the category. Most categories allow 200 characters, but the cap drops sharply in a few:

• Standard categories (Home & Kitchen, Sports & Outdoors, Tools): 200 characters
• Electronics: 150 characters
• Apparel & Fashion: 125 characters (tightened in a policy update in early 2025)
• Pet Supplies: 80 characters

The category limit isn’t the binding constraint for most sellers. The mobile display limit is. Over 70% of Amazon traffic is mobile, and mobile search results truncate titles at 70-80 characters. Anything past that exists only for the algorithm and the small fraction of desktop shoppers.

Best practice: write a keyword-rich title under 80 characters with brand and primary product type up front, then extend with secondary keywords and qualifiers up to the category limit.

What Are Amazon Bullet Point Character Limits?

Sellers get 500 characters per bullet point. Vendors (1P) get 255. Both numbers describe what shoppers can read. Neither describes what Amazon’s search engine indexes. The indexing limit is separate and much tighter:

1. Display Limit (up to 500 characters/bullet): The maximum text shoppers can see. Varies by category and account type. Apparel sometimes recommends a soft cap of 255 characters per bullet.
2. Indexing Limit (1,000 bytes total): Amazon’s search algorithm only indexes the first 1,000 bytes across all five bullets combined. Anything past that displays to shoppers but is invisible to search.

The practical rule: aim for roughly 1,000 characters total across all five bullets if you’re writing in ASCII. A clean target is 5 bullets at ~200 characters each. Listings with well-structured bullets that respect the 1,000-byte indexing window can see keyword indexing coverage improve by ~15% on average. For a deeper structural framework, see the TFSD Framework.

What Is the 249-Byte Backend Keyword Limit?

Backend search terms are limited by bytes, not characters. The exact limit varies by marketplace:

• US, UK, EU: 249 bytes
• Japan: 500 bytes
• India: 200 bytes

Going one byte over the limit causes Amazon to silently drop every backend keyword on the listing. There is no error message in Seller Central. The field saves successfully, the keywords appear in the UI, and the algorithm ignores them.

Rules for using the field efficiently:

• Separate keywords with spaces. Don’t use commas or semicolons.
• Don’t repeat keywords. Amazon’s algorithm handles plurals and stemming automatically.
• Count bytes, not characters, if you sell in non-English marketplaces or use special characters. A German phrase like “für größe farbe” is 18 visible characters but 20 bytes.

For a complete backend workflow, see Amazon backend keywords.

What Are Amazon Description and A+ Content Limits?

Product descriptions are capped at 2,000 characters and must be plain text. HTML support was removed in July 2021. For richer formatting, use A+ Content, which has its own per-module limits:

Module Type	Headline Limit	Body Text Limit
Standard Text	160 chars	300-1000 chars
Image Header with Text	150 chars	6000 chars
Premium Text	80 chars	5000 chars

Standard A+ Content allows up to 5 modules per listing. Premium A+ allows 7. A common workaround sellers try is putting text inside images to bypass character limits. Don’t. Image text isn’t indexed by Amazon search or by Google, and it isn’t accessible to screen readers.

What Happens When You Exceed Amazon’s Character Limits?

The consequences differ by field, and they range from cosmetic to catastrophic:

• Titles: Seller Central often accepts titles longer than the category limit, but search results truncate them and mobile cuts them off around 70-80 characters.

• Bullet Points: Customers see everything you wrote, but keywords past the 1,000-byte indexing window contribute nothing to search ranking.
• Backend Search Terms: The harshest penalty. One byte over 249 bytes (US/UK/EU) and the entire field is ignored for SEO. No error, no warning, no indication that anything is wrong.
• Product Description: You’ll see an explicit error and the listing won’t save.

The asymmetry matters. Title and bullet overruns cost you marginal visibility. Backend overruns cost you the entire field. That’s why the 249-byte limit deserves more attention than any other number on this page.

How Have Amazon Character Limits Changed Over Time?

Year	Change	Impact
Pre-2016	5000 character backend limit	Era of keyword stuffing. Sellers crammed every variant into the field.
Aug 2017	250 byte limit enforced	The modern byte-based limit was established.
July 2021	HTML deprecated in descriptions	Descriptions became plain text only.
Feb 2024	500 byte expansion (some categories)	Inconsistent rollout. 249 bytes remains the safest default.
Jan 2025	Title policy update	Stricter category-specific title limits for Apparel and adjacent categories.

A lot of older blog posts still cite 5,000-character backend fields or recommend HTML formatting in descriptions. Both are wrong as of 2026. The 2024 expansion to 500 bytes applies only to some categories and was never rolled out consistently across marketplaces, which is why 249 bytes remains the safest universal default.

FAQ - Amazon Character Limits Questions

What is the Amazon title character limit?

200 characters in most categories. Electronics caps at 150, Apparel at 125, Pet Supplies at 80. Mobile shoppers only see the first 70-80 characters of any title regardless of category.

What is the Amazon bullet points character limit?

500 characters per bullet for sellers (255 for vendors). Amazon only indexes the first 1,000 bytes across all five bullets combined, so a clean target is roughly 200 characters per bullet.

What is the Amazon backend keywords limit?

249 bytes in the US, UK, and EU. 500 bytes in Japan. 200 bytes in India. Going one byte over de-indexes every backend keyword on the listing.

Is Amazon’s limit bytes or characters?

Both, depending on the field. Titles, bullets, and descriptions are character limits. Backend search terms are byte limits. ASCII characters are 1 byte, umlauts are 2 bytes, Japanese is 3 bytes, emojis are 4+ bytes.

Why are Amazon keywords not indexing?

The most common cause is exceeding 249 bytes in the backend search terms field. Amazon silently stops indexing the field when this happens. A byte counter will tell you for sure, especially if you’re using non-ASCII characters.

What is the Amazon product description character limit?

2,000 characters. HTML formatting hasn’t been supported since 2021, so descriptions are plain text only.

How many characters show on Amazon mobile?

Roughly 70-80 characters of the title. Brand and primary product type belong in those first 70 characters because most shoppers never see the rest.

Does Amazon count spaces in character limits?

Yes. Spaces count toward both character and byte limits. Commas between backend keywords are unnecessary; a space is enough.

Conclusion

Three rules cover most of the risk on this page. Backend search terms are measured in bytes, not characters, and one byte over 249 silently de-indexes the entire field in US/UK/EU. Mobile truncates titles at 70-80 characters, so the front of the title carries almost all of the SEO weight. Bullet points are indexed only for the first 1,000 bytes across all five.

The first action worth taking right now is auditing the backend search terms on your top-selling ASINs. If any of them exceed 249 bytes, you’re losing search visibility today. For a complete listing audit beyond just byte counts, the Amazon listing audit tool scores any ASIN on title, bullets, backend, and image fields and prioritizes the highest-impact fixes. For a deeper read on the surrounding optimization workflow, see Amazon listing optimization.