Adding many at once.
WHEN TO IMPORT
More than a few dozen products Migrating from another platform Regular catalogue updates from a supplier
THE FORMAT
A CSV file with one row per product and columns matching the expected fields.
WooCommerce provides a sample.
WHAT TO PREPARE
Product names Descriptions Prices SKUs Categories Stock Image URLs or filenames
THE IMAGE QUESTION
Images can be referenced by URL and downloaded during import, or uploaded separately first.
Uploading first is more reliable for large catalogues.
WHAT GOES WRONG
Column mapping errors Encoding problems with special characters Variations not linked to their parent product Timeouts on large files
FOR LARGE IMPORTS
Split into batches of a few hundred.
Raising limits excessively is worse than batching.
BEFORE IMPORTING
Back up. Test with five products first.
AFTER IMPORTING
Check a sample thoroughly, and every price.