Metasizer

Scan your metafields for the new 16KB size limit before API 2026-04 enforces write restrictions.

API version 2026-04 introduces a strict 16KB limit on metafield writes. Metafields that exceed this limit become read-only, which can break apps or workflows that update them. MetaSizer scans every metafield across products, variants, collections, and shop data, measures the exact byte size, and flags entries near or over the limit. Results are shown in a sortable table with risk indicators and can be exported as CSV. The scan is read-only and never modifies store data.

• Scan metafields across products, variants, collections, and shop data
• Measure exact byte size and flag metafields near or over the 16KB limit
• View results in a sortable table and export findings as a CSV file