You've got products listed, traffic trickling in, and maybe even a few sales each week. But something feels off. Your bounce rate (the percentage of visitors who leave without clicking anything) is higher than you'd like. Conversions feel sluggish. You suspect something is broken, slow, or invisible to Google — but you have no idea where to start looking.
The good news: you don't need to hire an expensive consultant or buy premium software to diagnose the problem. A handful of powerful, genuinely free tools can reveal exactly what's holding your ecommerce store back — from page speed issues to broken links to SEO gaps your competitors are already exploiting.
This guide walks you through the best free audit tools available, explains what each one actually does in plain language, and shows you how to turn their findings into real improvements that drive more traffic and sales.
Why You Need to Audit Your Ecommerce Store Regularly
Think of a website audit like a health check-up for your online store. Just as you wouldn't wait until you're seriously ill to visit a doctor, you shouldn't wait until sales dry up to examine your site's performance.
An ecommerce audit typically covers three critical areas:
- Technical health — Is your site fast? Do all your links work? Can Google actually find and understand your pages?
- SEO (Search Engine Optimisation) — Are your product pages showing up in search results? Are you targeting the right keywords? Is your content structured so search engines can rank it?
- User experience — Can shoppers easily find what they need, add items to their cart, and check out without frustration?
Problems in any of these areas silently bleed revenue. A one-second delay in page load time can reduce conversions by up to 7%. A single broken link in your checkout flow could be turning away dozens of customers per day without you ever knowing.
The tools below cover all three areas, and every single one has a useful free tier. Let's dig in.
Speed and Performance Tools
Page speed is the foundation of everything else. If your store loads slowly, visitors leave before they see your products, and Google pushes your pages further down in search results. These tools tell you exactly what's slowing you down.
Google PageSpeed Insights
What it does: Analyses any page on your site and scores it from 0 to 100 for both mobile and desktop performance. It also provides a prioritised list of specific issues — like oversized images, render-blocking scripts (code that forces the browser to pause while it loads), and server response times.
How to use it:
- Go to pagespeed.web.dev
- Paste in your homepage URL and hit "Analyse"
- Review your mobile score first — most ecommerce traffic comes from phones
- Scroll to the "Opportunities" section, which lists fixes ranked by potential time savings
- Start with the biggest time-saver at the top
What to look for: Any score below 50 on mobile is a red flag. Common ecommerce culprits include uncompressed product images, too many third-party tracking scripts, and bulky theme code.
Before and after example: One store owner found their homepage scored 28 on mobile. The top recommendation was to serve images in "next-gen formats" (modern file types like WebP that are smaller without losing quality). After converting their hero banner and top product images using a free tool like Squoosh, their score jumped to 61 — and their average page load dropped from 6.2 seconds to 2.8 seconds.
GTmetrix
What it does: Similar to PageSpeed Insights, but with a more visual "waterfall chart" that shows you the exact loading sequence of every file on your page. This makes it easier to spot the specific image, script, or font that's causing the bottleneck.
How to use it:
- Visit gtmetrix.com and create a free account
- Enter your URL and run the test
- Click the "Waterfall" tab to see a timeline of every resource loading
- Look for any single file that takes longer than one second — that's your priority fix
The free tier lets you test from one server location, which is plenty for identifying major issues. If your store targets customers in a specific country, GTmetrix helps you confirm whether your hosting is physically close to your audience — a factor that directly affects speed.
SEO Audit Tools
Speed gets visitors to stay. SEO gets them to arrive in the first place. These tools reveal whether search engines can properly find, understand, and rank your store's pages.
Google Search Console
What it does: This is Google's own free tool that tells you exactly how your store appears in search results. It shows which keywords you're ranking for, which pages have errors, and whether Google is having trouble reading any of your content.
If you only set up one tool from this entire list, make it this one.
How to set it up:
- Go to search.google.com/search-console
- Add your store's domain and verify ownership (usually by adding a small code snippet to your site — most ecommerce platforms have a dedicated field for this in their settings)
- Wait 48–72 hours for data to populate
- Navigate to "Coverage" (or "Pages") to see any indexing errors
What to look for:
- "Not indexed" pages — These are pages Google knows about but refuses to show in search results. Common causes include duplicate content (e.g., multiple URLs for the same product because of variant filters) or pages blocked by your robots.txt file (a small file that tells search engines what they're allowed to crawl).
- Mobile usability issues — Google flags pages with text too small to read on mobile, buttons too close together, or content wider than the screen.
- Performance report — Shows your average position, click-through rate, and total clicks for every keyword. Look for keywords where you rank on page two (positions 11–20) — these are your biggest opportunities because a small improvement could push you onto page one.
Screaming Frog SEO Spider (Free Version)
What it does: Crawls up to 500 pages of your site (just like Google's own crawler would) and produces a spreadsheet of every URL along with its title tag, meta description, headings, word count, response code, and more. It's the closest thing to seeing your store through Google's eyes.
How to use it:
- Download the free version from screamingfrog.co.uk
- Enter your store's URL in the bar at the top and hit "Start"
- Once the crawl finishes, click the "Response Codes" tab and filter for "Client Error (4xx)" — these are your broken links
- Click the "Page Titles" tab and filter for "Missing" or "Duplicate" — these are pages that either have no title tag or share one with another page (both are SEO problems)
- Export the results and work through issues one at a time
For stores with fewer than 500 products, the free version covers your entire site. The tool sounds technical, but the interface is surprisingly intuitive once you run your first crawl.
Concrete example: A store selling handmade candles ran Screaming Frog and discovered 34 product pages had identical meta descriptions that read "Buy handmade candles online." After writing unique descriptions for each page — including specific scent names and use cases — organic traffic to those product pages increased by 22% over the following two months.
Usability and Conversion Tools
Attracting visitors is only half the job. These tools help you understand what people actually do once they land on your store — and where they get frustrated or give up.
Microsoft Clarity
What it does: Records real visitor sessions (anonymised) so you can watch exactly how people interact with your site. It also generates "heatmaps" — visual overlays that show where people click, scroll, and hover most. Completely free, with no traffic limits.
How to set it up:
- Sign up at clarity.microsoft.com
- Add the small tracking code to your site (on Shopify, paste it into your theme's custom code section; on WooCommerce, use a header/footer plugin)
- Within 24 hours, you'll start seeing session recordings and heatmaps
What to watch for:
- Rage clicks — When a visitor clicks the same spot repeatedly because something isn't responding. Clarity automatically flags these.
- Dead clicks — Clicks on elements that aren't actually clickable (like images that look like buttons but aren't).
- Scroll depth on product pages — If most visitors never scroll far enough to see your "Add to Cart" button, you have a layout problem.
Spend 20 minutes watching 10 real visitor sessions. You'll learn more about your store's usability in those 20 minutes than in weeks of guessing.
Google Lighthouse (Built Into Chrome)
What it does: Runs an automated audit covering performance, accessibility (whether people with disabilities can use your site), best practices, and SEO — all from within your browser. No sign-up required.
How to run it:
- Open your store in Google Chrome
- Right-click anywhere on the page and select "Inspect"
- Click the "Lighthouse" tab at the top of the panel that opens
- Select "Mobile" and check all categories
- Click "Analyse page load"
Lighthouse gives you a score for each category and a plain-English explanation of every issue it finds. Pay particular attention to the accessibility score — issues like missing image descriptions (called "alt text") and poor colour contrast don't just affect disabled users. They also hurt your SEO, since Google uses alt text to understand what your product images show.
Putting It All Together: Your Free Audit Workflow
Running six different tools can feel overwhelming. Here's a practical workflow that keeps things manageable:
- Start with our free site audit tool to get a quick overview of your store's health and identify the most urgent issues at a glance.
- Run Google PageSpeed Insights on your homepage, your top-selling product page, and your collection/category page. Fix anything flagged as "high impact" in the Opportunities section.
- Set up Google Search Console if you haven't already. Check for indexing errors and identify page-two keywords you can push onto page one.
- Crawl your site with Screaming Frog to catch broken links, duplicate titles, and missing meta descriptions across your entire store.
- Install Microsoft Clarity and let it collect data for a week. Then review session recordings and heatmaps for your highest-traffic pages.
- Run Lighthouse audits on any page that still seems underperforming after the steps above.
Tackle issues in order of impact: speed first (because it affects everything), then SEO errors (to bring in more traffic), then usability (to convert that traffic into sales).
If you're running your store on Shopify's free trial, this is the perfect time to run a full audit before committing to a paid plan — you'll launch with a technically sound foundation instead of inheriting problems from day one.
Common Audit Mistakes to Avoid
Even with the right tools, store owners often stumble in predictable ways:
- Chasing a perfect score instead of fixing real problems. A PageSpeed score of 100 means nothing if your product photos are ugly and your checkout is confusing. Focus on fixes that affect revenue, not vanity metrics.
- Running tools but never acting on the results. An audit is only useful if you fix what it finds. Block one hour per week specifically for addressing audit findings, starting with the highest-impact items.
- Auditing once and forgetting about it. Your store changes constantly — new products, updated themes, added apps, seasonal promotions. Run a lightweight audit (PageSpeed + Search Console check) monthly, and a full audit quarterly.
- Ignoring mobile results. Every tool in this list lets you test mobile performance separately. Always prioritise the mobile results, because that's how the majority of your customers are shopping.
Your Next Step
Here's what to do right now: pick one tool from this list — just one — and run it against your store's homepage. Don't overthink which tool to start with. Google PageSpeed Insights takes 30 seconds and requires zero setup, so it's a great first move.
Write down the top three issues it surfaces. Fix the easiest one today. Schedule time this week for the other two. Then move to the next tool.
A complete ecommerce audit doesn't happen in an afternoon, but it absolutely starts with a single page load. If you want a comprehensive overview without juggling multiple tools, start with our services — we audit ecommerce stores every day and can pinpoint exactly what to fix first for the biggest revenue impact.
Your store is already making sales. Imagine what it could do without invisible problems holding it back.
