Best Free Tools to Test Your Shopify Store Before Going Live 2026

Before you remove your Shopify store password and start driving traffic, you need to know your store actually works. These 10 free tools will surface speed problems, broken links, mobile layout issues, and checkout errors before your customers find them. Each one is free, requires no signup in most cases, and takes less than 10 minutes to use.

If you have not yet finished your pre-launch setup, work through the Shopify store pre-launch checklist first, then come back here to run your tests.

1. Shopify Test Mode

What it does: Lets you place a real order through your store without charging a card or processing actual payment.

How to use it:

1. Go to Settings → Payments → Shopify Payments → Manage.
2. Enable “Test mode.”
3. Go to your storefront and add a product to cart.
4. Proceed to checkout and enter the test card number: 4242 4242 4242 4242.
5. Use any future expiry date (e.g., 12/28) and any three-digit CVC.
6. Complete the order and check Orders in your admin.

What to fix if issues are found: If the order does not appear in your dashboard, check that your payment gateway is fully configured. If the checkout page throws an error, disable any recently installed apps and retry.

Why it is the most important test: No other tool tells you whether your checkout actually works. Always run this test last, after all other changes are made.

2. Google PageSpeed Insights

What it does: Scores your store’s speed on mobile and desktop (0–100), and reports on Core Web Vitals — the metrics Google uses as a ranking factor.

How to use it:

1. Go to pagespeed.web.dev.
2. Enter your store’s homepage URL and click “Analyze.”
3. Also test your most important product page URL.

What to fix if issues are found:

• Image size issues: compress images using Squoosh or a Shopify image optimizer app.
• Unused JavaScript: this often comes from installed apps. Remove apps you are not actively using.
• Largest Contentful Paint (LCP) over 2.5 seconds: your hero image is probably too large.

Realistic targets: A score of 50–70 on mobile is acceptable for a Shopify store with a standard theme. Above 70 is excellent. Below 40 warrants investigation before launch.

For a full breakdown of how to improve your score, see the guide to optimising Shopify store speed.

3. Google Mobile-Friendly Test

What it does: Checks whether Google considers your page mobile-friendly and flags specific usability issues such as text that is too small to read or tap targets that are too close together.

How to use it:

1. Go to search.google.com/test/mobile-friendly.
2. Enter your store URL and click “Test URL.”
3. Wait for the result — it takes about 30 seconds.

What to fix if issues are found:

• “Text too small to read”: increase your base font size in theme settings (14px is the minimum; 16px is better).
• ”Clickable elements too close together”: add more padding around buttons and menu items in your theme customiser.
• ”Content wider than screen”: a theme element or image is overflowing. Check for fixed-width containers in your theme code.

Note: This tool tests a single URL. Test your homepage, a collection page, and a product page separately.

4. Broken Link Checker

What it does: Crawls your site and identifies links that return a 404 (page not found) or other error — before your customers stumble across them.

How to use it:

1. Go to deadlinkchecker.com (free, no signup).
2. Enter your store URL and run the check.
3. Review the list of flagged URLs and the pages they appear on.

What to fix if issues are found:

• Broken internal links: go to the page containing the link and update or remove it.
• 404 product pages: you may have deleted a product that is still linked from a collection or navigation menu. Redirect the old URL to a live page via Online Store → Navigation → URL Redirects.
• Broken external links: update or remove links to external sites that no longer exist.

Why it matters: A customer landing on a 404 page abandons at a much higher rate. Broken links also harm your SEO crawl budget.

5. Google Search Console

What it does: Shows you whether Google can find, crawl, and index your pages. Also surfaces any manual penalties, crawl errors, and Core Web Vitals data from real users.

How to use it:

1. Go to search.google.com/search-console and add your property.
2. Verify ownership using the HTML tag method (paste the tag into Online Store → Preferences → Google Analytics field, or your theme’s <head> section).
3. Go to Sitemaps and submit yourdomain.com/sitemap.xml.
4. Come back 24–48 hours later and check the Coverage and Core Web Vitals reports.

What to fix if issues are found:

• “Excluded: Noindex” pages: check that your products and collections are not accidentally set to noindex.
• Crawl errors: any 404s flagged here should be redirected.
• Mobile usability issues: fix these in your theme customiser.

Why it matters: Without Search Console, you are operating blind. You will not know if Google is indexing your store until it is too late.

6. Responsinator

What it does: Previews your store across a range of common device screen sizes simultaneously — iPhone portrait, iPhone landscape, iPad, and Android — in one scrollable view.

How to use it:

1. Go to responsinator.com.
2. Enter your store URL in the field at the top and press Enter.
3. Scroll down to see your store rendered across all device types.

What to fix if issues are found:

• Overlapping elements on small screens: adjust padding and font sizes in your theme customiser.
• Images not scaling correctly: set images to width: 100%; height: auto in your theme CSS.
• Navigation menu breaking: consider using a hamburger menu for mobile if your current menu overflows.

Tip: Pay particular attention to the iPhone SE portrait view (320px wide) — it is the smallest common screen size and the most likely to break layouts.

7. WAVE Accessibility Checker

What it does: Identifies accessibility issues on your store — missing alt text, low colour contrast, missing form labels, and structural problems that affect screen reader users and assistive technology.

How to use it:

1. Install the free WAVE browser extension for Chrome or Firefox.
2. Navigate to your store homepage.
3. Click the WAVE icon in your browser toolbar.
4. Review the flagged errors and alerts.

What to fix if issues are found:

• Missing alt text: add descriptive alt text to all images in Products and through your theme’s image settings.
• Low contrast errors: increase the contrast between your text and background colours in your theme settings. A minimum contrast ratio of 4.5:1 is the standard.
• Missing form labels: any email signup or contact form input should have an associated label element.

Why it matters: Accessibility issues affect roughly 15% of internet users. Fixing them also benefits your SEO, as many accessibility best practices overlap with what search engines prefer.

8. Shopify Inbox Test

What it does: Confirms that your live chat widget is working, messages are reaching you, and automated responses are configured correctly.

How to use it:

1. Make sure Shopify Inbox is installed and active.
2. Open your storefront in a private or incognito browser window.
3. Click the chat widget and send yourself a test message.
4. Go to Inbox in your Shopify admin and confirm the message arrived.
5. Reply and confirm the reply appears in the storefront window.

What to fix if issues are found:

• Widget not appearing: check that the Inbox app is enabled and that your theme is compatible.
• Messages not arriving: check your notification settings in the Inbox app and confirm your email address is correct.
• No automated reply: set up an instant reply message in Inbox settings — even “We’ll reply within a few hours” reduces bounce rates.

Why it matters: Customers who use live chat convert at a significantly higher rate than those who do not. A broken chat widget is a missed conversion.

9. Email Notification Test

What it does: Verifies that Shopify’s automated transactional emails — order confirmation, shipping notification, abandoned cart — are reaching customers and displaying correctly.

How to use it:

1. Go to Settings → Notifications.
2. Click any notification template (start with “Order confirmation”).
3. Click “Send test email” and enter your email address.
4. Check your inbox and review the email.

What to check:

• Your store logo appears in the email header.
• The email is not in your spam folder.
• All links in the email are working (especially “View your order”).
• The email renders correctly on mobile — check on your phone, not just desktop.

What to fix if issues are found:

• Missing logo: upload your logo in Settings → Notifications → Customize.
• Emails landing in spam: this is often caused by a missing SPF/DKIM record on your custom domain. Contact your domain registrar to set these up.
• Broken links: Shopify-generated links should work automatically; if they do not, contact Shopify Support.

10. GTmetrix Free

What it does: Provides a detailed waterfall chart showing exactly which files are loading on your page, how long each takes, and what is slowing your Time to First Byte (TTFB) and Largest Contentful Paint (LCP).

How to use it:

1. Go to gtmetrix.com (free tier available, no signup required for basic reports).
2. Enter your store URL and click “Test your site.”
3. Review the Performance score, TTFB, and the Waterfall chart.

What to look for:

• TTFB above 600ms: slow server response. On Shopify, this can be caused by a slow third-party app script loading on every page.
• Large images in the waterfall: images over 500 KB should be compressed.
• Multiple render-blocking scripts: each app you install can add a script. Too many apps = slow store.

What to fix if issues are found:

• Identify the largest files in the waterfall and address them one at a time.
• Uninstall any apps whose code is still loading even if the app itself is paused.
• Use lazy loading for images (most modern Shopify themes do this by default).

Difference from PageSpeed Insights: GTmetrix gives you the raw waterfall data, which is more useful for diagnosing specific bottlenecks. PageSpeed Insights gives you the end-user speed score that Google uses. Use both.

Running These Tests in the Right Order

To avoid wasting time retesting, run these tools in this sequence:

1. Broken Link Checker — fix any dead links first so other tools are not affected.
2. Google Mobile-Friendly Test — fix layout issues before testing performance.
3. Responsinator — cross-check on multiple device sizes.
4. WAVE — fix accessibility issues.
5. Google PageSpeed Insights + GTmetrix — now that content issues are resolved, address speed.
6. Google Search Console — submit sitemap and note any issues for the first week post-launch.
7. Email Notification Test — confirm transactional emails work.
8. Shopify Inbox Test — confirm live chat works.
9. Shopify Test Mode — run the full checkout test last, after everything else is in order.

To understand what broader mistakes to avoid when launching, read about the most common mistakes new Shopify sellers make.

FAQ

Do I need to create accounts for all of these tools?

No. Most tools on this list work without a signup. Google PageSpeed Insights, Google Mobile-Friendly Test, Responsinator, Broken Link Checker, and GTmetrix’s basic report are all free with no account required. Google Search Console requires a Google account for ongoing monitoring.

How often should I re-run these tests?

Run the full suite before launch and after any significant change — new theme, major app install, or product catalogue restructure. For ongoing monitoring, check Google Search Console weekly and PageSpeed Insights monthly.

My PageSpeed score is 35 on mobile. Is that a problem?

It is below average but not unusual for Shopify stores running several apps. Focus on fixing the specific issues PageSpeed flags rather than chasing a number. Compress images, remove unused apps, and re-test. Anything above 50 on mobile is a reasonable launch target.

Can I use these tools on a password-protected store?

Most tools cannot crawl a password-protected store because they cannot bypass the password page. Use your Shopify store preview link (available in Online Store → Preferences) for some tools, or temporarily disable the password when testing.

What is a good Time to First Byte (TTFB)?

Under 200ms is excellent. Under 600ms is acceptable. Over 800ms will noticeably impact user experience and Google rankings. On Shopify’s hosted infrastructure, TTFB is usually good unless a slow third-party app script is blocking the page.

Does GTmetrix free test the same location every time?

On the free tier, GTmetrix tests from a default server location (usually Dallas or Vancouver). Results may vary slightly from a test run from a UK or European location. This is fine for identifying relative issues — the waterfall chart is the same regardless of server location.