ThemeGuard: Mobile/Layout Monitor & Safe Rollback
The Opportunity
Automatically tests live storefronts across devices for layout regressions, tracks theme code changes, and provides one-click rollback and diagnostics.
"Merchants experience broken templates, mobile layouts not matching editor, carousels/announcements failing, and new collections not rendering."
Market Validation
Detailed Analysis
Proposed Solution
Scheduled visual diff tests on key pages, CSS/JS error capture, change logs per deployment, and guided rollback to last healthy version; flags known issues like overflow causing horizontal scroll.
Target Audience
Merchants frequently updating themes or installing/uninstalling apps; agencies managing multiple stores.
Competitive Landscape
Theme Watch (basic change alerts), Lighthouse CI (not Shopify-specific)
Implementation Notes
Connect via Theme API to snapshot code; run Playwright visual tests on staging/live for mobile/desktop; detect DOM errors, CSS overflow/viewport issues, missing sections; maintain rollback points via duplicated themes; provide alerting (Slack/Email) on regressions; optional CDN cache purge hooks; includes test for collection templates displaying products and rotating announcement banners.
Evidence from Merchants
Real quotes from Shopify community forums
"I can’t continue my work, and I can’t make sales that way."
"I haven’t been able to find the root cause."
"Seems like even starting fresh with a new template doesn’t solve the issue."
"The announcement banner on my homepage and my product page template is broken."
"If I try to create a new collection, the products appear fine in shopify admin, but the live page does not show any products."
Key Pain Points
Mobile view issues causing layout to appear as desktop version
criticalMentioned by 3 merchants
Impact: Loss of sales due to poor mobile experience
Collections not displaying on live site despite being set up correctly
highMentioned by 2 merchants
Impact: Inability to sell new products
Market Metrics
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