Facebook Ad Copy Generator for SaaS
Generate high-converting Facebook and Instagram ad copy for your SaaS in seconds. AI-powered with proven copy frameworks. No signup required.
How It Works
Ad Copy in Three Steps
Enter Your Details
Add your product description and select your CTA goal. That's all the AI needs to write your ads.
AI Writes Your Copy
Our AI generates ad copy using proven frameworks — primary text, headlines, and descriptions, all within character limits.
Copy & Launch
Copy your ad text into Ads Manager. Upgrade for 15 variations across 10+ copy types and the Copy Bible framework.
Ad Copy Anatomy
The Four Parts of Facebook Ad Copy
Every Facebook ad has four text elements. Understanding the role and limits of each is essential for writing copy that converts.
Primary Text — 125 Characters Visible
The main body text above your image or video. Only ~125 characters show before "See more" on mobile. Lead with your strongest hook or pain point. You can write longer copy, but front-load the value.
Headline — 40 Characters
Appears below the image in bold. Keep it under 40 characters to avoid truncation. Use it to reinforce the offer or highlight the key benefit. This is often the last thing users read before clicking.
Description — 30 Characters
The small text below the headline. Not always shown depending on ad placement. Keep it under 30 characters and use it for a supporting detail — pricing, social proof, or urgency.
CTA Button — Preset Options
Facebook provides preset CTA buttons: Learn More, Sign Up, Get Started, Download, Subscribe, and more. Choose the one that matches your conversion action. "Sign Up" for trials, "Learn More" for landing pages.
Compare
Free Tool vs Full Access
Free Tool
No signup required
- 3 ad copy variations
- Diverse copy types
- Within character limits
- CTA optimised
Full Access
Free tier availableInside the SaaS Ads Studio
- 15 ad copy variations
- 10+ copy types (pain point, testimonial, question, etc.)
- Testimonial and pain-point inputs
- Uses your full Brand DNA for matching
- Copy Bible framework for consistent messaging
FAQ
Frequently Asked Questions
What makes good Facebook ad copy?
Great Facebook ad copy stops the scroll and drives action. For SaaS, that means leading with a specific pain point or outcome, keeping primary text concise (under 125 characters visible before "See more"), using a clear call-to-action, and matching the tone to your audience. The best-performing ads feel like helpful advice, not a sales pitch.
What are the Facebook ad copy character limits?
Facebook recommends: primary text up to 125 characters (though you can write more, only ~125 show before "See more"), headlines up to 40 characters, and descriptions up to 30 characters. The CTA button is selected from Facebook's preset options (Learn More, Sign Up, Get Started, etc.). This tool generates copy within these limits to ensure nothing gets truncated.
What CTA should I use for my SaaS ads?
"Sign Up" works best for free trial offers. "Learn More" is ideal for consideration-stage campaigns or higher-price products where users need more information. "Get Started" works well for freemium SaaS. Match your CTA to the conversion action — if you're sending users to a signup page, use "Sign Up"; if it's a landing page, "Learn More" performs better.
How many ad copy variations should I test?
Start with 3 to 5 copy variations per ad set. This gives Meta's algorithm enough creative variety to optimise delivery while keeping your budget focused. Test different angles — pain point, benefit, social proof, question-led — rather than just tweaking individual words. The full version generates 15 variations across 10+ copy types for thorough testing.
What is the Copy Bible framework?
The Copy Bible is our proprietary framework inside the SaaS Ads Studio that stores your best-performing messaging, tone of voice, pain points, benefits, and proof points. When you generate ad copy with the full tool, it pulls from your Copy Bible to ensure every variation sounds like your brand and uses language that resonates with your audience.
Is this ad copy generator really free?
Yes. You can generate 3 ad copy variations completely free, no signup required, up to 3 times per day. For the full experience — 15 variations, 10+ copy types, testimonial and pain-point inputs, Brand DNA matching, and the Copy Bible framework — sign up for the SaaS Ads Studio (free tier available).
Ready For The Full
Copywriting Toolkit?
Get 15 ad copy variations, 10+ copy types, the Copy Bible framework, and 7 more AI ads tools — all inside the SaaS Ads Studio.