File Upload in WooCommerce — a practical guide to WooCommerce file upload with clear examples you can reuse in real projects.
WooCommerce Plugin Development Series (76/101). Prefer one article? Read the complete WooCommerce plugin development tutorial.
Short description
Validate mime/size, store safely, and link files to orders/products with permissions.
Upload guardrails
Capability + nonce checks
Allowlist mime types
Store outside public exec paths when possible