Responsive search ads (RSAs) are Google Ads’ primary search ad format, allowing you to provide up to 15 headlines and 4 descriptions that Google’s machine learning combines into the best-performing ad for each search query. Writing effective RSAs requires a different approach than the old expanded text ads — you need headlines that work in any combination while maximising relevance, which directly impacts Quality Score, ad rank, and cost per click for Indian businesses competing in increasingly expensive search auctions.
How Many Headlines and Descriptions Should You Write?
Google allows up to 15 headlines and 4 descriptions. Best practice recommendations:
- Minimum effective: 10 headlines and 3 descriptions. Below this, Google has insufficient variety to optimise
- Ideal target: 12-15 headlines and 4 descriptions. More options give Google’s algorithm more combinations to test
- Ad strength indicator: Google rates your RSA from “Poor” to “Excellent.” Aim for at least “Good” — ads rated “Poor” may receive less impression share
- Each headline must stand alone: Any headline could appear in any position (1, 2, or 3). Each must make sense independently and in combination with others
What Makes a Strong Headline Strategy?
Diversify your headlines across these categories:
| Category | Example (Digital Marketing Agency) | Why It Works |
|---|---|---|
| Keyword-focused | “Digital Marketing Agency in Udaipur” | Direct relevance to search query |
| Benefit-driven | “Grow Your Revenue With Proven SEO” | Answers “what’s in it for me” |
| Social proof | “Trusted by 300+ Indian Businesses” | Builds credibility (use only verified numbers) |
| Call to action | “Get Your Free SEO Audit Today” | Drives immediate action |
| Differentiator | “Full-Stack Agency — Dev + Marketing” | Stands out from competitors |
| Price/offer | “Plans Starting at INR 15,000/Month” | Qualifies clicks by budget |
| Urgency | “Limited Spots for Q1 Onboarding” | Creates time pressure (only if genuine) |
How Should You Use Headline Pinning?
Pinning locks a specific headline to a specific position (headline 1, 2, or 3). Use sparingly:
- Pin your primary keyword headline to position 1: This ensures the most relevant headline always appears first, improving expected CTR
- Pin your brand name to position 2 or 3 if brand awareness is a goal: Ensures your business name always appears
- Do not pin more than 2 headlines: Over-pinning restricts Google’s ability to optimise combinations and typically reduces performance
- Pin multiple options to the same position: You can pin three different headlines to position 1, giving Google variety while ensuring that position always has a keyword-relevant headline
What Description Writing Techniques Improve Performance?
Descriptions have 90 characters each — more space than headlines to convey detail:
- Lead with value proposition: The first description should clearly state what you offer and why it matters — “Full-service digital marketing agency helping Indian businesses increase online leads and revenue”
- Include a call to action: At least one description should end with a clear CTA — “Contact us for a free consultation” or “Request your quote today”
- Add specifics: Numbers, timelines, and concrete details outperform vague claims — “Results in 90 days” beats “Fast results”
- Address objections: Use a description to counter common hesitations — “No long-term contracts” or “Pay only for results”
How Do You Test and Optimise RSAs?
Because Google automatically tests headline combinations, your optimisation approach differs from traditional A/B testing:
- Check asset performance: In Google Ads, view individual headline and description performance ratings (Best, Good, Low). Replace consistently “Low” performing assets
- Run multiple RSAs per ad group: Google recommends one RSA per ad group, but testing 2-3 RSAs with different messaging themes can reveal which approach resonates better
- Review combination reports: Google shows which headline combinations appear most frequently — this reveals what the algorithm considers most effective
- Refresh every 4-8 weeks: Replace underperforming headlines and descriptions. Seasonal messaging (Diwali offers, year-end discounts) should be added and removed on schedule
- Use ad variations: Google Ads experiments let you test systematic changes (like adding “Free Consultation” to all ads) with statistical significance
Does ad strength actually affect performance?
Google states that improving ad strength from “Poor” to “Excellent” can increase conversions. While the direct impact on auction ranking is debated among practitioners, ads with higher strength ratings provide Google more combinations to test, which generally leads to better performance over time. Treat “Good” as the minimum threshold and optimise toward “Excellent” where possible without sacrificing message quality.
How many responsive search ads should each ad group have?
Google recommends one RSA per ad group for most accounts. For ad groups with high volume, testing two RSAs with distinctly different messaging approaches (e.g., benefit-focused vs. price-focused) can reveal which strategy performs better. More than three RSAs per ad group dilutes data and slows learning.
Should I include my city name in RSA headlines for local targeting?
Yes, for businesses targeting specific Indian cities. Including city names like “Udaipur,” “Jaipur,” or “Mumbai” in headlines improves relevance for location-modified searches and can increase CTR significantly. Use location insertion where available, or create separate ad groups for different cities with city-specific headlines.
How do RSAs work with broad match keywords?
RSAs paired with broad match keywords give Google maximum flexibility — the algorithm matches diverse search queries while assembling the most relevant headline combination for each. This approach requires strong negative keyword management to prevent irrelevant matches, but when combined with Smart Bidding (Target CPA or Target ROAS), it often outperforms exact match with pinned RSAs for accounts with sufficient conversion data.
