A responsive search ad accepts up to 15 headlines of 30 characters and 4 descriptions of 90 characters, assembled by Google at auction time. An RSA generator should fill every slot with a different job, respect both character limits, apply a deliberate pinning contract — keyword and intent at position 1, unique selling point at position 2, trust and call to action at position 3 — avoid near-duplicate assets, and export or publish into the account rather than stopping at a text box. Ad Strength is a diversity guideline, not a performance metric.