Before you paste these in: the prompts below include placeholders in brackets like [product] and [keyword]. Fill these in before sending. The more specific you are with the placeholders, the less you'll need to edit the output.
One ground rule that makes all of these work better: start your Claude session with a one-paragraph context block. Something like: "I'm writing Google Ads for [company], which sells [product] to [audience]. Our main value proposition is [X]. Our tone is [professional/direct/friendly]." Paste that first, then use the prompts below.
Headlines
1. Generate a full set of RSA headlines
Prompt
Write 15 Google Ads headlines for [product/service] targeting the keyword [keyword]. Each headline must be 30 characters or fewer. Include a mix of: keyword-focused headlines, benefit-focused headlines, and urgency or social proof headlines. Number each one and include the character count in parentheses.
Why it works: The character count instruction prevents Claude from producing headlines you can't use. Asking for a mix of types ensures variety across the RSA — Google needs headlines that serve different roles in the ad rotation.
2. Rewrite weak headlines
Prompt
These Google Ads headlines are underperforming. Rewrite each one to be more specific and benefit-driven. Keep each under 30 characters. Here are the current headlines: [paste headlines]
Why it works: Claude is better at improving existing copy when given the constraint upfront. If you just say "make these better," you get vague improvements. "More specific and benefit-driven" gives it a clear direction.
3. Generate keyword-insertion-ready headlines
Prompt
Write 5 Google Ads headlines designed to work with keyword insertion. Each should read naturally when [default text] is inserted at the start. Keep the full headline under 30 characters including the default text. Format: {KeyWord:[default text]} + rest of headline.
Descriptions
4. Write RSA description lines
Prompt
Write 4 Google Ads description lines for [product]. Each must be 90 characters or fewer. Each should cover a different angle: (1) main benefit, (2) social proof or credibility, (3) a specific feature, (4) a call to action. Include character counts.
Why it works: Google shows two description lines per ad. Having four gives you rotation options and ensures the combination Google picks is always coherent — covering different angles reduces redundancy.
5. Rewrite a description to include a CTA
Prompt
Rewrite this Google Ads description to end with a clear call to action. The action I want users to take is [action]. Keep it under 90 characters. Original: [paste description]
Ad variations and testing
6. Create audience-specific variations
Prompt
I have this Google Ad: [paste full ad]. Rewrite it for three different audiences: (1) [audience 1], (2) [audience 2], (3) [audience 3]. Keep all character limits. Change the angle and benefit emphasis for each audience, but keep the core offer the same.
Why it works: Audience-specific ads are one of the highest-leverage tests in Google Ads, and rewriting the same ad three times manually is the kind of tedious work Claude handles well. This prompt ensures you're testing the angle, not the offer.
7. Generate A/B test pairs
Prompt
Create two versions of a Google Ad for [product]. Version A should lead with the main benefit. Version B should lead with the problem the product solves. Each version needs 3 headlines (under 30 chars each) and 2 descriptions (under 90 chars each). Include character counts.
Competitor-aware copy
8. Write a differentiation-focused ad
Prompt
I'm writing Google Ads for [product]. Our main competitors are [competitor 1] and [competitor 2]. They typically emphasize [competitor positioning]. Write 3 headlines and 2 descriptions that differentiate us by emphasizing [our differentiator]. All character limits apply.
Ad extensions
9. Write sitelink extensions
Prompt
Write 4 Google Ads sitelink extensions for [company/product]. For each sitelink, provide: a title (25 characters max) and two description lines (35 characters max each). The four sitelinks should cover: [topic 1], [topic 2], [topic 3], [topic 4].
10. Write callout extensions
Prompt
Write 8 Google Ads callout extensions for [product]. Each must be 25 characters or fewer. Focus on trust signals, key features, and service quality. Avoid generic phrases like "Great service" or "Best quality." Include character counts.
Why it works: Callouts are the place most marketers write generic filler. The instruction to avoid generic phrases forces Claude to get specific — and specific callouts ("No Setup Fee", "Cancel Anytime", "SOC 2 Certified") perform better than vague ones.
Getting more from these prompts
The prompts above are starting points. The outputs you get depend heavily on the context block you set at the beginning of your session. A vague context ("I sell software") produces vague ads. A specific context ("I sell project management software to construction foremen at firms with 10–50 employees, primarily in the Southeast US, competing on ease of use over enterprise features") produces copy that could run tomorrow.
The other thing that improves output significantly: paste in your best-performing existing ads. Tell Claude: "These are our top ads by CTR. Use them to understand our tone and what resonates with our audience. Now write [X]." This gives Claude real signal about what works for your account — not just what sounds good in general.