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WooCommerce & WordPress Plugin Docs

Sizer Pro

Sizer Pro is the premium edition for Sizer. It is an add-on that requires the free Sizer plugin installed and active; it is distributed through Freemius (licensing, activation and automatic updates), not the WordPress.org directory.

Sizer Pro extends the free size guide on product pages. It does not work on its own. If the free plugin is missing, deactivated, or older than the required version, Sizer Pro stays dormant and shows an admin notice instead of booting.

Shipping PRO features

Section titled “Shipping PRO features”
  • Default size chart — assign a fallback chart used when a product has no chart linked. Resolved through the free plugin’s sizer/resolved_chart_id filter via DefaultChart. Configure on WooCommerce → Size Guides.
  • Per-variation charts — assign a chart per variation on variable products, inherit from the parent, or hide the guide for a variation. Storefront modal content updates as shoppers switch variations via VariationCharts. Configure under Product → Variations.
  • Unit switching — let shoppers toggle between centimetres and inches on the chart modal via UnitSwitch and free chart unit hooks on sizer/chart_units / sizer/chart_controls.
  • Find my size — measurement form above the chart that suggests a size from shopper input via FindMySize and the free sizer/match_size filter. Configure on WooCommerce → Size Guides (PRO panel).
  • Import / export charts — back up all charts as JSON or move a single chart as CSV via ChartImportExport. Available on WooCommerce → Size Guides → Size charts (PRO panel).

Planned PRO features

Section titled “Planned PRO features”
  • Measurement diagram images — illustration images alongside the chart.

Configuration

Section titled “Configuration”
ScreenPurpose
WooCommerce → Size GuidesFree chart manager and display settings; PRO store-wide default chart, unit switch and Find my size panels.
WooCommerce → Size Guides → Size chartsFree chart editor; PRO JSON/CSV import and export panel.
Product → Size guideFree per-product chart assignment.
Product → VariationsPRO chart per variation, inherit from parent, or hide guide for a variation.

Requirements

Section titled “Requirements”
  • WordPress 6.5 or later
  • PHP 8.1 or later
  • WooCommerce 8.0 or later
  • The free Sizer plugin, version 0.1.2 or later, installed and active

Relationship with Sizer

Section titled “Relationship with Sizer”

The free plugin provides reusable size charts assigned per product with an accessible modal, chart unit hooks for PRO and the sizer/match_size filter for size suggestions. PRO adds a store-wide default chart, per-variation assignment, cm/in storefront toggle, Find my size and chart import/export.