Free CRO Audit Tools: What They Catch - and What They Miss

If you're hoping one free tool will spit out "here's why your page doesn't convert," close the tab. That tool doesn't exist. I've looked.

But if you want to run a free CRO audit that actually collects real evidence before you change anything, good news. The free stack is genuinely strong in 2026. Stronger than most paid dashboards were five years ago.

Here's the honest answer up front. Can you audit your landing page for free? Yes, partially. Free tools will show you where people click, where they drop, how fast the page loads, and which queries bring visitors in. What no free tool does is interpret that evidence. None of them will read your headline and tell you it answers the wrong question. This post covers the tools. For the full audit process, start with the pillar: how to do a CRO audit.

TL;DR

• Six free tools cover the evidence layer: Clarity, PageSpeed Insights, GA4, Search Console, Contentsquare (ex-Hotjar), Screaming Frog.
• Microsoft Clarity is the standout: free forever, no traffic limits, real session recordings.
• Every tool measures behavior. Zero tools judge your headline, proof, or offer.
• Google Optimize died in September 2023, so there's no mainstream free A/B testing tool anymore.
• Per Microsoft's Bing experimentation data, less than a third of test ideas move their target metrics. Low-traffic sites should fix obvious leaks, not test.

The free CRO audit stack, compared

I analyzed 521 SaaS pages building pages.report, and this is the stack I'd hand any founder who asked "where do I start for free."

Run these while you work through the 30-point CRO audit checklist. The tools collect; the checklist tells you what to inspect.

Now the honest read on each one.

Microsoft Clarity: the best free tool, full stop

Clarity is free forever with no limits on traffic, per Microsoft's own homepage. That's not a trial. That's the product.

You get heatmaps, full session recordings, and automatic flags for rage clicks, dead clicks, and excessive scrolling. Watching ten recordings of real visitors hitting your pricing page teaches you more than a month of staring at charts.

What it can't do: tell you why. Clarity shows you fifteen people rage-clicking a non-clickable image. It can't tell you whether they expected a demo, a zoom, or a link. The recording is evidence. The diagnosis is still on you.

Google PageSpeed Insights: speed truth, with a catch

PageSpeed Insights is free, needs no account, and gives you two layers: Lighthouse lab scores and CrUX field data from real Chrome users.

Speed matters. Portent's 2022 research found ecommerce conversion at 3.05% for pages loading in 1 second versus 0.67% at 4 seconds. That's a dated study, but the direction holds.

Two catches. Low-traffic sites get no field data at all, so you're stuck with lab numbers that don't reflect real devices. And speed is rarely the whole story. A fast page can still convert nobody. A 90 Lighthouse score on a page with a vague headline is a fast way to lose visitors.

GA4: the funnel view, if your setup is honest

GA4 is free; Analytics 360 is the paid enterprise version and you almost certainly don't need it.

The audit value is funnel drop-off segmented by source and device. Mobile visitors from paid social bailing at step two while desktop organic sails through? That's a finding you act on.

The catch is garbage-in. If your conversion events are misconfigured, GA4 reports fiction with total confidence. And misconfigured events are common. Duplicate purchase events, untagged forms, and test traffic polluting funnels turn up in setup after setup. Before trusting any GA4 number, trigger each key event yourself and watch it land. Twenty minutes, saves weeks.

Google Search Console: the pre-click audit

Search Console is free and covers the part every other tool ignores: what happens before the click.

The move: pull queries per page, then compare what people searched against what your page promises. If a page gets impressions for "landing page audit tool" but the title sells something else, your CTR dies before your landing page gets a vote. For context, Unbounce's Q4 2024 Conversion Benchmark Report puts median landing page conversion at 6.6%. You never reach that number if the click never happens.

What GSC can't see: anything after the click. It hands off to Clarity and GA4 at the door.

Contentsquare (ex-Hotjar): the why-layer, with fuzzy limits

Hotjar merged into Contentsquare; hotjar.com/pricing now redirects to contentsquare.com/pricing. A "Start for free" plan exists, but session limits aren't published on the pricing page. The legacy Hotjar free plan had a hard daily session cap. Check the current limits at signup.

Why it's still on the list: surveys and feedback widgets. This is the why-layer Clarity lacks. A one-question exit survey ("what stopped you from signing up today?") produces the closest thing to interpretation a free tool offers, in your visitors' own words.

The limit: visitors tell you what confused them, not how to fix it. And they answer the question you asked, which may not be the question that matters.

Screaming Frog: technical hygiene only

Screaming Frog's free version crawls up to 500 URLs; the paid license is $279 a year. For most SaaS marketing sites, 500 URLs covers everything.

It catches broken links, redirect chains, missing titles, duplicate metadata, and orphaned pages. Boring, mechanical, worth doing once a quarter. A checkout path that 404s on mobile is a conversion problem no heatmap will explain.

Know what it is, though: a crawler. It knows nothing about persuasion, offers, or why humans buy. It's the janitor of this stack. Necessary, not sufficient.

What no free tool catches

Here's the gap, and it's the whole reason audits exist.

No tool can tell you whether your headline answers the wrong question. Clarity shows visitors bouncing in eight seconds. It can't tell you they left because your hero says "AI-powered workflow platform" when they searched for "invoice reminders for freelancers."

No tool can tell you whether your proof matches the objection. GA4 shows the drop at pricing. It can't tell you your testimonials rave about support while the visitor's real fear is migration pain.

No tool can tell you your offer is weak. If nobody wants a 30-minute demo call for a $19 tool, every tool in this stack will faithfully record the silence. None will say "the ask is wrong."

Tools score. They don't judge. A page can hit 95 on Lighthouse, show clean heatmaps, and still convert nothing because the argument on the page is wrong.

"Just A/B test it" isn't the free escape hatch either. Google Optimize was sunset in September 2023, and no mainstream free testing tool replaced it. Even with a paid tool, Microsoft's Bing team reported that less than a third of tested ideas moved their target metrics. And that's with world-class infrastructure and traffic most of us don't have. If you're under a few thousand visitors a month, fixing obvious leaks beats testing. Every time.

That judgment layer is the part I sell. Someone looks at your evidence and tells you what to fix, in what order: a $99 human CRO audit, delivered as a video teardown in 48 hours. The tools above are the evidence. The audit is the verdict.

Run the free stack first

Do it in this order. Install Clarity today; it needs a week of recordings to be useful. Verify your GA4 events by hand. Pull your GSC query-to-page mismatches. Run PageSpeed and Screaming Frog once, fix the red flags, move on. Add a Contentsquare exit survey if you have the traffic.

Then look at the pile of evidence and ask the question no tool will answer: does this page make an argument worth believing?

If you can answer that yourself, you don't need me. If you can't, you know where the evidence stops.

– Luke