Shopify Performance Stabilization

Context

• This was a high-traffic Shopify storefront with paid acquisition growth targets.
• Checkout abandonment and perceived slowness were limiting conversion efficiency.

Challenge

• Conversion-critical views loaded too slowly.
• Third-party scripts and theme code had grown without clear performance limits.
• Performance work was not consistently tied to conversion outcomes.

Key Decisions

• Instrument funnel checkpoints before broad optimization. Why: Required direct linkage between each performance change and conversion metrics.
• Prioritize checkout-path rendering and script execution budgets. Why: The checkout path had the highest abandonment risk.
• Ship incremental performance changes with conversion monitoring gates. Why: Required regression control while the site remained revenue-critical.

Implementation Changes

• Reduced critical-path payload and deferred non-essential storefront scripts.
• Reworked expensive theme behaviors around checkout-adjacent interactions.
• Added ongoing performance-to-conversion review checkpoints.

Results

• Abandoned checkout improved from approximately 94% to approximately 84%.
• Revenue scaled from approximately EUR 20k to approximately EUR 200k after performance unlock and increased ad spend.

Tech Stack