What is Rakuten SEO? Basics to Maximize Sales by Mastering the R-Karate Search Algorithm

Main Keywords: Product name, brand name, generic name (e.g., sparkling water, sneakers)
  • Sub Keywords: Features, capacity, color, material (e.g., strong carbonation, label-free)
  • Benefit/Usage Scene: Gift, free shipping, diet, bulk purchase

    • 3. 検索順位を左右する「Sales Track Record」と「CVR」

    The two most important factors that determine search rankings are 'sales track record' and 'CVR (conversion rate).' R-Karate places extremely high weight on recent (past 7-30 days) sales data. Products with high CVR are rated as 'high user satisfaction products' and receive score boosts.

    As a practical step, optimize your product names by placing main keywords at the front (left side). It's also essential to naturally incorporate suggested keywords in the 'PC catchphrase,' 'smartphone catchphrase,' and 'smartphone product description' fields.

    4. 実践：商品名とキャッチコピーの最適化

    RMS（店舗運営システム）で設定する「商品名」は、SEOにおいて最も重要なフィールド.重要なキーワードほど左側（前方）に配置し、不必要な記号は避けましょう。また、「PCIt's essential to naturally incorporate suggested keywords into the 'PC catchphrase' and 'smartphone product description' fields as well.

    A professional business environment showing a high-resolution dashboard with real-time shop performance metrics, including click-through rates and keyword ranking improvements.

    FAQ

    Q. How long does it take to see results from Rakuten SEO?
    A. Generally, if you combine keyword optimization with sales measures, you can expect improvements to start appearing within 2-4 weeks. However, for highly competitive categories, a medium-term strategy of 3-6 months may be necessary.
    Q. Is there a difference in SEO effectiveness between PC and smartphone?
    A. Yes. Since display formats and character limits differ between PC and smartphone on Rakuten, optimizing for each is recommended. With smartphone traffic now exceeding 70%, smartphone-first optimization is essential.

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    Summary

    Rakuten SEO success requires mastering the R-Karate algorithm through two pillars: keyword relevance and sales track record. Start with MECE keyword selection, place main keywords at the front of product names, and build initial sales momentum through strategic advertising. The combination of organic SEO and data-driven optimization creates a sustainable growth flywheel.

    Published: February 17, 2026 / Author: Makoto Takimiya

    References

    • [1] Rakuten Ichiba Search Optimization Guidelines (Store Operations Manual)
    • [2] 楽天大学 SEO Basics講座 モジュール4
    Disclaimer: This article is for informational purposes only and does not guarantee specific sales results or search rankings. Content may change due to platform policy updates.