EStore Tools

Amazon Backend Search Terms Generator

Get backend search terms made only of words your title and bullets miss, with repeats, brands and filler stripped out and trimmed to fit the byte limit.

Describe the result you need. AI will set up the tool and ask for any missing details.

Configure with AI

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Sent to AI. Leave out passwords and private customer data.

Your brief

These form details are sent to our AI provider when you generate. Review the result before publishing.

Amazon's rules for search terms

The Search Terms field is hidden from shoppers but read by Amazon's search. Amazon's help page, Use search terms effectively, sets out the rules:

  • Under 250 bytes. Plain letters and numbers are 1 byte each. Accented letters such as ä take 2 bytes, and symbols such as € take 3.
  • Generic words only: no brand names, yours or anyone else's.
  • No repeats, and nothing already in the title, brand or other fields.
  • Separate words with spaces. Punctuation isn't needed.
  • Spelling variations, not misspellings. Amazon's search already handles common misspellings.
  • No stop words such as a, an, and, by, for, of, the and with.

How the generator builds the list

  1. 01

    Reads your listing

    It notes every word already in your title and bullets, because those are indexed already.

  2. 02

    Finds the gaps

    It lists synonyms, other names for the product, uses, occasions and audiences that don't appear anywhere yet.

  3. 03

    Cleans the list

    It removes brands, stop words, subjective words like "best", repeats and plurals of words already there.

  4. 04

    Trims to fit

    It aims for 170 to 220 characters of plain letters, which keeps you safely under 250 bytes, cutting the least important words from the end.

AI models can't count bytes exactly, so paste the result into the Amazon backend keywords checker. It counts every byte and flags anything left over.

Adding the terms in Seller Central

  1. 01

    Open the listing

    In Seller Central, go to Catalog → Manage all inventory, find the product and choose Edit.

  2. 02

    Open the keywords section

    Find the Search Terms (generic keyword) field on the listing's keywords or product details section.

  3. 03

    Paste and save

    Paste the terms as one line, separated by spaces. Changes can take a day or two to show in search.

Questions people ask

What is the byte limit for Amazon search terms?

Amazon limits the field to under 250 bytes. Plain English letters are 1 byte each, but accented letters and symbols take 2 or 3, so count bytes, not characters.

Should I put competitor brands in my search terms?

No. Amazon's rules say not to include brand names in search terms. The generator removes them, including phrases like "alternative to" a named brand.

Do I need commas between terms?

No. Separate words with single spaces. Amazon says punctuation isn't needed.

Should I repeat words from my title?

No. Words in the title are already indexed, so repeating them wastes space you could use for new terms.

Is it free?

Yes, with a fair-use limit so it stays free for everyone. There's no sign-up. Your notes are sent to an AI model only to write the copy.

Related tools

Amazon Backend Keywords CheckerCheck backend search terms against Amazon's byte limit, strip repeats and wasted words, and get a cleaned version.Amazon Title ShortenerCut a long Amazon title down to the 75-character limit, keep the keywords that matter and move the rest into Item Highlights.Amazon Listing GeneratorGet a full Amazon listing in one pass: title, Item Highlights, five bullets, a plain-text description and backend search terms, all written to Amazon's rules.Amazon Search Term Report AnalyzerUpload your Sponsored Products search term report to find wasted spend, keywords to harvest and negative keyword candidates.

Want this builtinto your store?

I'm Emmanuel, a Shopify and WooCommerce developer. If this tool pointed at something you'd rather have fixed for you (a faster store, cleaner product data, a migration, a custom feature), send me a note.

Emmanuel Asika

Emmanuel Asika

Shopify & WooCommerce developer, Dublin

I build and fix online stores: new builds, migrations, speed, SEO and the custom bits apps can't do.

hello@emmanuelasika.com
See my work

Last reviewed 30 September 2026.

Sources: Amazon Seller Central: Use search terms effectively