- Effective Google Ads copy is specific, relevant, attractive, and empowering, per Google's own guidance.
- Each RSA headline is capped at 30 characters. Each description is capped at 90 characters.
- Google retired expanded text ads in June 2022. RSAs are the only text ad format you can create today.
- Generic CTAs like 'call us today' reduce engagement. Use benefit-led CTAs tied to user intent instead.
- Improving Ad Strength from Poor to Excellent is linked to 12% more conversions on average.
- AI Copywriting tools can generate on-brand headlines and descriptions so you arrive in Ads Manager ready to launch.
Google Ads copy lives or dies on three things: relevance, clarity, and a specific call to action. This guide walks you through the fundamentals, step by step.
What Makes Effective Google Ads Copy
Good copy starts with understanding what Google itself looks for.
The four pillars: specific, relevant, attractive, empowering
Per Google's Ads Help Center, effective text ads share four traits. They are specific, relevant, attractive, and empowering. Apply this framework to every ad you write.
Specific. Name your product, price, or offer. Vague ads get scrolled past.
Relevant. Mirror what the user searched. The closer the match, the better.
Attractive. Give people a reason to click your ad over the one above it.
Empowering. Tell users exactly what they can do or get right now.
Why beginners should focus on user benefits first
Most beginners write about their brand. Winning copy is about the reader. "Save 30% on accounting software" beats "Industry-leading accounting software" every time. Lead with what the user gains.
The Anatomy of a Google Search Ad
Google's current standard ad format is the Responsive Search Ad (RSA).
Headlines: character limits and best practices
Per Google's Ads Help Center, each headline is capped at 30 characters. You can write up to 15 headlines per RSA. Google requires at least 3. Include your target keyword in at least one headline. Keep each headline short, self-contained, and punchy.
Descriptions: what to include and how to write them
Each description is capped at 90 characters. You can write up to 4 descriptions per RSA. Google requires at least 2. Use descriptions to expand on your headline benefit, add social proof, or reinforce your call to action.
Understanding responsive search ads (RSA) vs. expanded text ads
Google retired expanded text ads in June 2022. You cannot create or edit them. RSAs are the only text ad format available today. You supply up to 15 headlines and 4 descriptions. Google's system tests combinations and surfaces the best performers automatically.
5 Essential Steps to Write Your First Google Ad
Step 1: Identify your unique value proposition
What do you offer that a competitor does not? Free shipping? A money-back guarantee? A faster result? Write that down before touching the headline fields. Your value proposition anchors every asset you create.
Step 2: Research and include your best-performing keywords in headlines
Your headlines should reflect what people actually type. If someone searches "affordable CRM software," your headline should echo that phrase or a close variant. Google rewards keyword relevance with a better Quality Score. A better Quality Score lowers your cost per click.
Step 3: Focus on user benefits, not generic sales language
"Buy Now" tells users nothing. "Get Your Quote in 60 Seconds" tells them exactly what they receive. Replace every generic phrase with a concrete, specific benefit. The reader should understand what they get before they even click.
Step 4: Write a clear, specific call to action tied to user intent
Per Google's Ads Help Center, generic CTAs like "call us today" and "sign up today" show decreased engagement. Use CTAs tied to what the user wants. "Book a Free Demo," "Download the Guide," and "Get 20% Off Today" all outperform vague alternatives.
Step 5: Match your ad copy to your landing page
If your ad promises "Free 14-Day Trial," your landing page must say the same. Mismatch between ad and landing page causes visitors to leave without converting. This is one of the most costly beginner mistakes and one of the easiest to fix.
Common Beginner Mistakes to Avoid
Generic CTAs. "Click here" and "learn more" waste your limited character count. Be specific about what happens next.
Ignoring keyword relevance. Copy that doesn't reflect the search query loses relevance. Your Ad Strength score drops. So does your performance.
Ad-to-page mismatch. Broken promises kill conversions. Every claim in your ad must appear on your landing page.
Unclear messaging on mobile. A large share of clicks come from phones. Keep headlines scannable and descriptions direct.
How to Test and Improve Your Google Ads Copy
Google recommends creating 3-4 ads per ad group. More variations give the system more combinations to test. Use the Ad Strength rating inside Google Ads to see how well your assets reflect performance-linked attributes. Improving Ad Strength from "Poor" to "Excellent" is associated with 12% more conversions on average, per Google's data. Watch campaign-level asset reporting. Low-performing headlines should be swapped for variations built on your top performers.
Scale Your Copy with AI Tools
Writing 15 headlines and 4 descriptions per ad group is time-consuming. For beginners, it can feel paralyzing.
Why AI copywriting saves time for beginners and scales results
AI eliminates the blank-page problem. You provide context about your brand and offer. It returns headlines and descriptions built around your actual value proposition. You test faster and iterate faster.
How Coinis AI Copywriting generates headlines and descriptions from brand context
Coinis AI Copywriting pulls from your Brand Profile to generate on-brand headlines, body copy, and CTAs. You set your brand voice and positioning once. Every output reflects it. Use the results as a starting point for your RSA assets. Copy the strongest headlines into Google Ads and start testing from there. Coinis doesn't publish directly to Google Ads today, but it handles the hard creative work so you arrive in Ads Manager with ready-to-paste copy.
Or let Coinis do it.
From a product URL to a live Meta campaign. AI-generated creatives. On-brand copy. Direct publish to Facebook and Instagram. Real performance reporting. All in one platform.
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Frequently Asked Questions
How many headlines should I write for a Google RSA?
Google requires at least 3 headlines per Responsive Search Ad, but you can write up to 15. More variety gives Google's system more combinations to test, which typically improves performance over time.
What is the character limit for Google Ads headlines and descriptions?
Each headline is capped at 30 characters. Each description is capped at 90 characters. These are hard limits set by Google's Ads Help Center documentation.
What happened to expanded text ads?
Google retired expanded text ads on June 30, 2022. You cannot create or edit them. Responsive Search Ads (RSAs) are the only text ad format available for new campaigns today.
How do I know if my Google Ads copy is working?
Use the Ad Strength rating inside Google Ads to see how your headlines and descriptions score. Then check campaign-level asset reporting to identify which individual headlines and descriptions drive the most engagement. Replace low performers with new variations built on your best ones.