How to A/B Test Blog Post Titles Without a Developer
Blog titles determine whether anyone reads your post. Here's how to test them in 5 minutes, on any blog platform, no code required.
Your blog post title is doing more work than any other sentence on the page. It decides click-through from search, share rate on social, and whether readers stay past paragraph one.
Most blogs never test their titles. They're written once and published. That's a lot of missed engagement over a year.
Here's how to set up a title test in five minutes.
Install the snippet
Paste the Helix snippet into your site-wide header. Every blog platform has a place for this:
- **WordPress:** Appearance → Customize → Additional Header Code (or use a plugin like "Insert Headers and Footers") - **Ghost:** Settings → Code Injection → Site Header - **Webflow:** Site Settings → Custom Code → Head Code - **Shopify:** Online Store → Themes → Edit Code → theme.liquid - **Custom:** Paste before the closing `</head>` tag
Find your blog title's CSS selector
Open any blog post. Right-click the title, pick "Inspect." Look at the `<h1>` element and copy its class.
Common patterns:
- WordPress: `.entry-title` or `.post-title` - Ghost: `.post-title` or `.gh-article-title` - Webflow: a custom class (check the style panel) - Medium-style themes: `article h1`
Create the test
In your Helix dashboard:
1. Click "New Test" 2. Paste the blog post URL (or the URL pattern if you want to test across posts) 3. Paste the CSS selector 4. Set element type to "Headline" 5. Paste the current title as the control 6. Let the AI generate 3-5 variants
Skim the variants. If any are off-brand or too clickbaity, delete them. Start the test with the ones you like.
Wait for traffic
Each visitor sees one variant. Helix tracks clicks, scroll depth, and whatever conversion event you've set up. When one variant crosses 95% probability, you get an email.
Pro tip: pattern testing
If you write a lot of posts, you'll find patterns. Questions vs statements. Numbers in titles vs not. Short vs long. CopyDNA learns these preferences per-site and biases future AI-generated variants toward what's worked historically. After 10-15 tests on titles, the variant suggestions get noticeably better.
One limitation
Helix replaces text content, not HTML. If your titles contain special formatting (inline links, emojis, HTML entities), the AI generates plain-text alternatives. For most blogs this is fine — the ones where it's not are usually the ones that shouldn't have heavy formatting in titles anyway.
Stop guessing which copy converts
Helix is an AI agent that runs A/B tests on your website copy 24/7 — writing variants, measuring results, and learning what works for your audience.
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