Conversion rate optimization gets talked about like it’s some advanced black art that only large enterprise teams with six-figure testing budgets can do. That’s nonsense. I’ve been running CRO tests on client sites for over a decade — on budgets ranging from $500/month to $50k/month — and the fundamentals don’t change.
Here are the 10 tests I run on virtually every new client site I take on. If you’re new to CRO, start here. If you’ve been at it a while, you’ll recognize most of these — and probably have a few sites where you haven’t done all of them yet.
First: Set Your Baseline
Before you touch anything, document your current conversion rates. Break it down by traffic source, device type, and landing page. You need a number to beat. I’ve walked into client accounts where no one knew what the conversion rate was — they just knew leads were “low.” You can’t optimize what you haven’t measured.
Connect Google Analytics, set up conversion goals, install a heatmap tool (I use Microsoft Clarity — it’s free), and give yourself at least two weeks of clean data before changing anything.
Test 1: Headline Variants
Always the first test. Write three headline variants: one outcome-focused, one problem-focused, one curiosity-driven. Run them on your highest-traffic entry page. A headline change alone routinely produces 15-40% conversion swings in my experience. It’s the highest-leverage single element on any page.
Test 2: CTA Button Copy
Change “Submit” to literally anything else and you’ll likely see improvement. But go further — test first-person language (“Send Me the Free Guide”) vs. second-person (“Get Your Free Guide”). Test action words. Test urgency. One automotive client saw a 28% lift in form fills when we changed “Get a Quote” to “See My Trade-In Value Today.”
Test 3: Form Length
Every field you add to a form reduces completion rates. Run a test: shorter form (name + email + phone) vs. longer form (with additional qualification fields). Sometimes the longer form wins because it filters leads and improves close rate. But often, the shorter form wins on volume. Know which matters more for your business before deciding.
Test 4: Hero Image or Video
Stock photo vs. real photo. Static image vs. short video. Photo of team vs. photo of result/product. These tests surprise people — I had a law firm client whose page converted 40% better with a simple headshot of the attorney than it did with an expensive professional photo of a dramatic courthouse exterior. Authenticity usually beats polish.
Test 5: Social Proof Placement
Test placing a testimonial or star rating directly below the headline vs. further down the page. For most service businesses, moving social proof higher — even a single line like “★★★★★ Rated by 200+ San Diego clients” — produces measurable improvement. Visitors form trust judgments in seconds. Meet them where they are.
Test 6: Pricing Display
For businesses where price is publicly shown: test showing the price early vs. late. Test anchoring with a higher “retail” number. Test “starting at” framing. Test removing price entirely and replacing with “Get Pricing.” Each vertical has different norms, and the right answer is rarely obvious without data.
Test 7: Page Layout — Single Column vs. Two Column
On desktop, two-column layouts can work well for forms (copy on left, form on right). But on mobile — where most traffic now comes from — single column almost always outperforms. I test different layout approaches, particularly for the section directly above the primary CTA. This is where friction either accumulates or disappears.
Test 8: Exit Intent Offer
When someone is about to leave without converting, do you have a recovery mechanism? Test adding an exit-intent popup or a sticky bar with a different, lower-friction offer — a free guide, a discount code, a “wait, one more thing” message. The tool I use for this is FollowPerClick, which does non-disruptive CTA overlays specifically. Done right, these recover 5-12% of abandoning sessions.
Test 9: Page Load Speed
Technically this is an optimization rather than an A/B test, but it belongs on every CRO list because it’s consistently one of the highest-ROI improvements. Every additional second of load time on mobile reduces conversions by roughly 7-12% based on Google’s own data. Run PageSpeed Insights. Fix every critical issue. Then test with the cleaner page vs. the old one. You’ll see the difference.
Test 10: Offer Framing
Same offer, different framing. “Save $200 on your first month” vs. “Get your first month at $X instead of $X+200.” “Free audit” vs. “Complimentary 30-minute strategy session.” “No contract” vs. “Cancel anytime.” The words around your offer change its perceived value. Test at least two framings of every offer before declaring one standard.
Where to Go From Here
These 10 tests will keep you busy for months on most sites. Document every test with a hypothesis, a start date, the metrics you’re watching, and the result. Build a testing log. Over time, you’ll develop intuition about what works for your specific audience — and that’s when CRO gets really powerful.
If you want help running a structured CRO program on your site, check out my services page or reach out directly. I work with clients in San Diego and remotely across the country. You can also explore my portfolio to see what actual results look like.
Frequently Asked Questions
What is CRO and why does it matter?
Conversion rate optimization is the practice of improving the percentage of visitors who take a desired action on your website — filling out a form, calling, purchasing, or downloading. It matters because it multiplies the value of every marketing dollar you spend. If you can double your conversion rate, you’ve effectively cut your cost-per-lead in half without changing your ad spend at all.
How much traffic do I need before I can run CRO tests?
At minimum, you need enough traffic to reach statistical significance — generally 100+ conversions per variant for reliable results. If your site gets 50 visitors a month, focus on qualitative research (heatmaps, session recordings, user interviews) rather than A/B testing. For smaller sites, multi-variant tests are less reliable than direct improvements informed by user behavior data.
What tools do I need for CRO?
At minimum: Google Analytics for baseline data, Microsoft Clarity or Hotjar for heatmaps and session recordings, and a testing tool like Google Optimize or VWO for A/B tests. For most small to mid-sized sites, these free or low-cost tools are more than enough to run a serious CRO program. Expensive enterprise tools aren’t necessary until you have enterprise-level traffic.
How long should I run a CRO test?
Long enough to reach statistical significance — typically 95% confidence. Use a significance calculator (there are free ones online) to determine sample size before starting. As a rule of thumb, run tests for at least two full weeks regardless of traffic to account for weekly behavioral cycles. Stopping a test early because the early results look good is one of the most common CRO mistakes.
Can CRO hurt my SEO?
Done properly, no. A/B testing is acceptable to Google when implemented correctly (using canonical tags or server-side testing). What can hurt SEO is making changes to page content that dilutes relevance for target keywords — so be thoughtful when testing headline copy on pages that rank for specific terms. Test the element, not the whole page’s keyword strategy.
What’s a good conversion rate to aim for?
It varies enormously by industry, traffic source, and offer type. E-commerce averages around 2-3%. Service business landing pages often run 3-8% for warm traffic. PPC campaigns typically have higher intent and can hit 8-15% on well-optimized pages. The most useful benchmark is your own historical baseline — aim to beat it consistently over time.
