Moving hundreds of LEGO minifigures from spreadsheets to live Whatnot listings takes forever if you do it manually. CSV uploads let you bulk list inventory in minutes instead of hours, but Whatnot's upload process has specific formatting requirements that trip up most resellers. Get the CSV format wrong and your upload fails. Get it right and you can list 200+ figures while competitors are still typing individual descriptions. Here's exactly how to format and upload your CSV to Whatnot without errors.
Prepare your CSV file format
Whatnot requires specific column headers for successful uploads. Your CSV needs these exact columns: Title, Description, Starting Price, Category, Condition, and Images. The Title field supports up to 80 characters. Keep descriptions under 500 characters and focus on key details buyers search for like series name, rarity, and condition notes.
Format your Starting Price column as numbers only without dollar signs or currency symbols. Use "0.99" not "$0.99". Set Category to "Toys" for LEGO items. Condition accepts "New", "Like New", "Good", "Fair", or "Poor" as valid entries.
Upload images before CSV import
Whatnot requires images to be uploaded to their system before you can reference them in your CSV. Upload your minifigure photos through Whatnot's image manager first, then copy the image URLs into your CSV's Images column. Separate multiple image URLs with semicolons.
This extra step slows down the process, but it prevents upload failures. Many resellers skip this and wonder why their listings don't appear.
Import your CSV through seller dashboard
Log into your Whatnot seller account and navigate to Inventory > Bulk Upload. Select your formatted CSV file and review the preview screen carefully. Whatnot shows you exactly which fields will populate where before you confirm the upload.
Failed uploads usually happen because of formatting errors in the Price or Images columns. Double-check these fields in the preview screen. Once uploaded, your items appear in your inventory ready for live shows or fixed-price listings.
Export from inventory tools to save time
Manually creating CSV files for every upload wastes hours. Inventory management tools like brickem.io export properly formatted CSVs that work with Whatnot's requirements. You scan your figures, verify values, then export ready-to-upload files without formatting headaches.
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FAQ
What file size limits does Whatnot have for CSV uploads?
Whatnot limits CSV files to 5MB and 1,000 rows per upload. For larger inventories, split your data into multiple CSV files and upload them separately.
Can I update existing listings through CSV upload?
No, Whatnot's CSV upload only creates new listings. To update existing items, you need to edit them individually through the seller dashboard or delete and re-upload.
Why do my CSV uploads keep failing on Whatnot?
The most common failures happen when price formatting includes dollar signs, image URLs aren't pre-uploaded to Whatnot's system, or condition fields use non-standard terms. Check these three areas first.
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