Product Metafield Uploader
A custom CSV-based tool that eliminated the manual work of updating Shopify metafields across thousands of product variants.

The Problem
What needed to change
With 6,000+ product-variant combinations in the Shopify catalogue, updating metafield data manually was impractical. Every change required navigating the Shopify admin individually for each variant.
The Solution
What we built
We built a browser-based tool that accepts a CSV file, matches rows to Shopify variants via SKU, and pushes metafield updates in bulk through the Shopify API.
Technical Detail
Architecture & Implementation
Browser-based JavaScript tool using the Shopify Admin API. CSV parsing with row-level validation. SKU-based variant matching. Rate-limit-aware batch processing.
Outcome
Reported 30+ hours of manual work eliminated for the initial catalogue update.
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