Issue library
Shopify conversion issue library
Every problem Zolvio’s audit can flag on a Shopify store: why it costs sales, exactly how Zolvio detects it, and how to fix it in your theme.
Each page is generated from the checks in Zolvio’s audit, so the library covers only problems the audit can actually raise, and says how it finds them. Checks as of September 29, 2026.
- issues covered
- 50
- AI review problem types
- 27
- categories
- 6
Browse issues
Showing 50 of 50 issues
- CriticalSpeed
Slow page load
Shoppers wait for the main content to appear, and some leave before they see a product.
MeasuredWhy and how to fix - CriticalProduct page
Product page without a product image
Shoppers can’t see what they’d be buying, which stops most purchases before they start.
MeasuredWhy and how to fix - CriticalProduct page
No add to cart button on the product page
The product page has no add to cart or buy button, so shoppers can’t buy from it.
Page contentWhy and how to fix - CriticalCart & checkout
No checkout button in the cart
A shopper who has decided to buy has nowhere to click next, so the sale stops at the cart.
MeasuredWhy and how to fix - HighTrust
No customer reviews on product pages
Shoppers can’t see what other buyers thought, so the product page has to earn their trust on its own.
Page contentWhy and how to fix - HighTrust
No way to contact the store
Shoppers with a question and no visible way to ask it often leave instead of buying.
Page contentWhy and how to fix - HighTrust
Broken images
Shoppers see an empty box or a broken-image icon where a photo should be.
MeasuredWhy and how to fix - HighTrust
Return promise that doesn’t match the refund policy
The product page promises one return window, such as “30-day returns”, and your refund policy states a different one, so shoppers buy on a promise the policy doesn’t make.
MeasuredWhy and how to fix - Medium or highTrust
Sale countdown that isn’t a real deadline
A sale countdown restarts for every new visitor, or ends at a different moment for visitors in different time zones, so the deadline it shows isn’t the sale’s end.
MeasuredWhy and how to fix - HighTrust
Product page says nothing about delivery or returns
Nothing on the product page mentions delivery or returns except the footer’s policy links, so shoppers deciding at the buy button can’t see what delivery costs, how long it takes or whether they can send the product back.
MeasuredWhy and how to fix - HighSpeed
Images much larger than they’re shown
Oversized images make every visitor download far more than the screen needs.
MeasuredWhy and how to fix - HighSpeed
Scripts that block the page from rendering
A script in the page head without async or defer makes the browser wait before it shows anything.
MeasuredWhy and how to fix - HighSpeed
Too many requests to third-party services
Apps, pixels and widgets loading from other domains slow the page and can hold up rendering.
MeasuredWhy and how to fix - HighSpeed
Phones download more video than they show
On a phone’s first visit the page downloads more video than the phone shows: a video hidden on phones, videos far down the page, or a file far wider than its box. Those megabytes compete with the first screen for the connection.
MeasuredWhy and how to fix - HighMobile
Text too small to read on mobile
Much of the page’s text is too small to read on a phone without zooming.
MeasuredWhy and how to fix - HighMobile
No mobile navigation menu
On phones, shoppers can’t reach your collections and pages without a menu built for small screens.
Page contentWhy and how to fix - Medium or highNavigation
No search on the store
Shoppers who know what they want can’t type it in, so they browse or leave.
Page contentWhy and how to fix - HighNavigation
Your domain without www (or with it) shows an error page
Shoppers who type your domain the other way, with or without www., get an error page instead of your store.
MeasuredWhy and how to fix - HighProduct page
Price missing from the product page
Shoppers who can’t see the price can’t decide, and many won’t ask.
Page contentWhy and how to fix - HighProduct page
Missing or thin product description
A description of a line or two leaves shoppers without the details they need to buy.
MeasuredWhy and how to fix - HighProduct page
Beauty product page without an ingredient list
The store sells beauty and skincare, but this product’s page gives no ingredient list, which shoppers with allergies or sensitive skin look for before they buy.
MeasuredWhy and how to fix - HighProduct page
Product page without a maximum user weight
The page of a product that carries a person, such as a treadmill, an office chair, an e-bike, a paddle board or a hammock, doesn’t give its maximum user weight, so shoppers can’t tell whether it will carry them safely.
MeasuredWhy and how to fix - HighProduct page
Google gets a price or rating the page contradicts
The product’s structured data tells Google a price the store doesn’t charge, a currency the page isn’t shown in, or two different star ratings, so Google shows shoppers something the page won’t honour.
MeasuredWhy and how to fix - HighProduct page
Latex balloons listed without the choking-hazard warning
A latex balloon product sold to US shoppers doesn’t show the choking-hazard statement US law requires on the listing itself.
MeasuredWhy and how to fix - HighCart & checkout
Cart shows no subtotal or total
Shoppers can’t see what they’ll pay before checkout, so they hesitate or leave to work it out.
Page contentWhy and how to fix - HighCart & checkout
Cart doesn’t mention shipping
The cart says nothing about shipping or delivery, so shoppers only find out what delivery costs at checkout, when a surprise is most likely to end the order.
Page contentWhy and how to fix - HighCart & checkout
Cart doesn’t show payment methods
Shoppers can’t see which payment methods you accept before they start checkout.
Page contentWhy and how to fix - Low or mediumTrust
Placeholder text or images left on the store
Shoppers see a theme’s sample text, Shopify’s grey placeholder drawings or a policy blank such as “[INSERT RETURN ADDRESS]”, and the store looks unfinished.
MeasuredWhy and how to fix - MediumSpeed
JavaScript files too large for phones
A theme or app script over 250 KB takes long to download and run, so the page is slow to respond.
MeasuredWhy and how to fix - MediumSpeed
Images far down the page load straight away
Images the shopper may never scroll to load with the page, competing with the ones they see first.
MeasuredWhy and how to fix - MediumSpeed
Main image on the first screen loads late on phones
The largest image on a phone’s first screen is set to lazy-load, so the browser starts downloading it only after laying out the page, and the first thing shoppers see appears late.
MeasuredWhy and how to fix - Medium or highSpeed
Leftover or broken code asks for missing files
Your pages ask for scripts, stylesheets or app addresses that no longer exist, often code a removed app left behind, so every shopper’s browser makes a wasted request and whatever the code was for doesn’t work.
MeasuredWhy and how to fix - MediumMobile
Buttons and links too small and too close to tap
Small, crowded buttons and links make shoppers mis-tap on their phones.
MeasuredWhy and how to fix - Low to criticalMobile
Page scrolls sideways on mobile
Something on the page is wider than a phone screen, so the page drifts sideways and looks broken.
MeasuredWhy and how to fix - MediumMobile
Images too large for phones
Images download far wider than they show on a phone, wasting data and slowing the page.
MeasuredWhy and how to fix - MediumMobile
Form fields too small on mobile
Short input fields are hard to tap into and type in on a phone.
MeasuredWhy and how to fix - MediumMobile
Add to cart button far down on phones
On a phone, shoppers have to scroll past more than 2 screens of gallery and text before they reach the button that buys the product.
MeasuredWhy and how to fix - MediumMobile
Pinch-to-zoom turned off on phones
Your theme’s viewport tag stops shoppers zooming in, so on Android phones they can’t enlarge a product photo or small print.
MeasuredWhy and how to fix - MediumNavigation
Broken links
Links to pages that no longer exist, or that do nothing when clicked, leave shoppers at a dead end.
MeasuredWhy and how to fix - MediumNavigation
Footer with few or no links
Shoppers look in the footer for policies, contact details and help; a sparse footer leaves them stuck.
Code scanWhy and how to fix - MediumNavigation
No filters on collection pages
Shoppers browsing a collection of more than 30 products can’t narrow it down by size, color or price.
Page contentWhy and how to fix - MediumNavigation
Links to empty collections
Shoppers follow a menu or homepage link to a collection and find no products in it.
MeasuredWhy and how to fix - MediumNavigation
Sold-out products at the top of a collection
Half or more of a collection’s first row is sold out while products shoppers can buy sit further down, so the collection opens on things they can’t buy.
MeasuredWhy and how to fix - MediumNavigation
Icon buttons and links screen readers can’t name
Icon-only buttons and links, such as the cart, search, menu or slider arrows, have no label, so a screen reader announces them only as “button” or “link”.
MeasuredWhy and how to fix - MediumProduct page
No way to choose a size or color
The product comes in several variants, but shoppers can’t pick one, so they can only buy the default.
Page contentWhy and how to fix - MediumProduct page
Product structured data missing or unreadable
The page has no Product structured data search engines can read: the hidden markup that tells them the product’s price, availability and rating.
Code scanWhy and how to fix - MediumProduct page
Error message next to the buy button
The product page shows an error such as “Couldn’t load pickup availability” right where shoppers decide to buy.
MeasuredWhy and how to fix - MediumProduct page
No size guide for a product sold in sizes
The product comes in clothing, shoe or ring sizes, but its page offers no size chart or fit advice, so shoppers have to guess their size.
MeasuredWhy and how to fix - LowNavigation
Logo doesn’t link to the homepage
Shoppers expect the logo to take them home; when it doesn’t, they lose their easiest way back.
MeasuredWhy and how to fix - LowCart & checkout
Sale savings not shown in the cart
The item in the cart is on sale, but the cart hides the saving, so shoppers may doubt the deal.
Page contentWhy and how to fix
Find out which of these your store has
Zolvio runs these checks on your own storefront from your Shopify admin and turns what it finds into a prioritized list with fix steps. It never edits your theme.
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