Amazon Backend Search Terms: Guidelines and Common Mistakes

What they are

Backend search terms, also called search term fields, let sellers provide additional keywords that are not visible on the detail page but may be used to help match shoppers' queries. Amazon provides guidelines on what is acceptable, and these can change, so read the current help page for your marketplace.

Use them for genuine additions

Use backend fields for relevant terms not already in your visible content: synonyms, alternate names, common misspellings if permitted, abbreviations and regional terminology. They are not a place to repeat visible keywords.

What to avoid

Do not include other brands' names, claims you cannot support, irrelevant terms or terms that violate guidelines. Avoid repetition, unnecessary punctuation and filler words. Misuse can lead to listing problems or reduced relevance.

• Competitor brand names
• Unverifiable or prohibited claims
• Irrelevant but popular terms
• Repeated visible keywords

Respect length limits

There are limits on the length of the backend field, typically measured in bytes rather than characters. Exceeding the limit can cause the whole field to be ignored. Check the current limit and keep entries comfortably within it.

Formatting basics

Use plain text separated by spaces. Do not use commas or special characters unless the guidelines say so. Avoid duplicates and write terms in lowercase for tidiness.

Per-language considerations

For marketplaces with several languages or regional variants, use terms appropriate to the language of the marketplace. Do not mix languages without a reason.

Audit existing entries

Review backend terms for key products at least twice a year. Remove anything irrelevant, repeated or outdated, and add new relevant terms from research and search term reports.

A worked example

A seller finds that a product listing includes the same keywords in title, bullets and backend fields, and that the field exceeds the allowed length. They replace repeated terms with new, relevant synonyms and regional spellings and stay within the limit.

Common mistakes

Typical mistakes include stuffing, including competitor names and exceeding the limit. Another is forgetting to update backend terms after product changes. Include them in your listing review checklist.

How to audit backend terms in practice

Export your listings with their backend fields and put them in a spreadsheet. Check length, look for repeated words and flag anything that matches a brand name, a prohibited claim or an irrelevant term. Compare the terms with your current keyword research and with the visible title and bullets.

Rewrite entries so they add new, relevant coverage rather than repeating existing content, and record the date and the change so you can judge effects later.

Your next three steps

Audit backend terms for your best sellers.

• Export the current backend fields and check their length.
• Remove repeats, brand names and irrelevant words.
• Add new relevant synonyms and record the date of the change.

Key terms

A few terms used above, in plain language.

• Backend search terms: hidden keywords supplied for a listing.
• Synonym: a different word with the same meaning.
• Byte limit: the maximum size of the field's contents.