Ecommerce · BigCommerce variants
BigCommerce variant & image CSV checker.
Open a BigCommerce import CSV and check only its Variant, Image and Video rows against the documented limits. The file never leaves your browser.
What is checked, and where each rule comes from
Rules were read from the official BigCommerce pages below on 2026-10-18. Order: Variant, Image and Video rows must sit beneath the Product row they belong to. Blank fields: ID must be blank on rows being added, and Type must be blank on variant rows. SKUs: unique, compared case-insensitively, up to 255 characters. Limit: a product can have at most 600 variants. Images: Image URL (Import) up to 1,024 characters at a referenceable http or https address; JPEG/JPG, GIF, WebP and PNG are allowed, TIFF, BMP and PDF are not; Image is Thumbnail must be filled in or removed. Videos: YouTube only, using the YouTube ID column. Product-level rules (required columns, numbers) are on the BigCommerce product CSV validator.
Sources: BigCommerce Help: Importing Your Catalog from Scratch (modern) and BigCommerce Help: Product Import/Export (modern experience). Rules can change; this page is an independent tool and is not affiliated with BigCommerce.
Frequently asked questions
How many variants can one BigCommerce product have?
BigCommerce's import article gives a maximum of 600 variants per product.
Why must Type be blank on a variant row?
The article says Type is required on the base product and must be blank on variant rows. This tool reports a value there as an error.
Which image types does the import accept?
JPEG/JPG, GIF, WebP and PNG, from a public http or https URL. TIFF, BMP and PDF are not allowed and local files cannot be imported.
Is my file uploaded?
No. It is read in your browser only.
Preflight only
Findings are based on BigCommerce's public documentation as of 2026-10-18. This tool does not log in to or contact BigCommerce, and cannot see your store or account. Always confirm in BigCommerce's own import preview.