When you try to create the full catalog, but have many products / product categories we recommend the following:
- Increase the PHP max_execution_time (see here how)
- Turn on the Caching (WooCommerce > PDF Catalog > General > Enable Caching)
- Then create the full catalog
- A cached file will be created and stored on your server
This will prevent creating the catalog new again. Remember to clear the cache when adding new products / categories.
Caching will prevent timeouts in total as just the cached file will be loaded when customers request it.