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Amazon Duplicate Keyword Remover

Remove duplicate keywords and phrases from your Amazon keyword lists instantly. Clean up your backend search terms and get a deduplicated list optimized for Amazon's 250-byte limit.

Free foreverNo signup requiredInstant results

Paste Your Keywords

Paste your keywords and click Remove Duplicates

How This Works

This tool processes your keyword list in three steps: parsing (splitting by your chosen separator), deduplication (removing exact or case-insensitive duplicates), and optimization (formatting for Amazon's backend search terms).

The Backend Keyword Optimizer goes further by breaking phrases into individual words, removing words already used in your title and bullet points, and ensuring the final output fits within Amazon's 250-byte limit. Amazon counts bytes, not characters, so this tool uses actual byte measurement for accuracy.

For best results, paste all your keyword research output into the input box, enable case-insensitive deduplication, and enter your title and bullets in the optimizer to maximize unique keyword coverage in your backend search terms.

Frequently Asked Questions

Amazon only indexes a keyword once, so repeating it wastes valuable character space in your backend search terms. Removing duplicates lets you fit more unique, discoverable keywords within Amazon's 250-byte limit, improving your listing's search visibility without keyword stuffing.
Amazon allows up to 250 bytes (not characters) for backend search terms. Standard English letters use 1 byte each, but accented characters or non-Latin characters may use 2-4 bytes. This tool calculates the actual byte count to ensure your keywords fit within Amazon's limit.
No. Amazon already indexes keywords from your product title, bullet points, and description. Including them again in backend search terms wastes space. Use the optimizer section of this tool to automatically exclude words already present in your title and bullets.
Amazon recommends separating backend search terms with spaces, not commas or semicolons. Do not use punctuation marks as separators. Simply list your keywords with single spaces between them. This tool automatically formats your cleaned keywords with space separation for the backend optimizer.
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