List the show
before it starts.
Start free Built by a working Whatnot seller — I read every signup personally and reply within 24–48 hours. — Jackie, Backstage Live
2 batches in motion. None ready yet.
Your between-shows workshop. Each batch is a CSV in the making.
Ready to share?
Pre-show today
You're filling out Whatnot's listing form. One. Item. At. A. Time.
One item, one form, repeat 22 times
Whatnot's form takes one listing at a time — title, category, condition, shipping, price, photos, save, repeat. By item 22 it's two hours later and your wrist hurts.
Photo soup
You shot 30 photos on your phone, AirDropped them over, and now you're squinting at
IMG_4521.HEIC trying to remember which item it was.
Category tree from hell
Every Whatnot category, each with its own sub-categories and condition options. The right combo is several clicks deep, and you find it again for listing after listing.
Pre-show panic
It's 5pm. The show's at 7. You're 9 items in with 13 to go — and you haven't eaten dinner.
Prep lets you draft the whole batch in one workspace, then push it to Whatnot in a single CSV.
What Prep actually does.
A focused listing builder that opens in its own Chrome tab and exports a CSV Whatnot's bulk importer accepts directly.
Drag a folder of photos in
Drag 30 photos from Finder into the Prep pane and group them into items — photos attach automatically, each file name becomes the starting title, and you just fill in price and category.
Auto-numbered callouts buyers can shout
Every item gets a chat-friendly code — A1, A2, A3 — buyers shout to request it. Sort your batch, hit Renumber, and every callout snaps back to sequential order.
Every Whatnot category baked in
Pick a category and the right sub-categories and condition options populate automatically. No more memorizing Whatnot's tree.
Bulk-edit a selection in one shot
Select 12 items and set category, condition, and shipping in one modal — or save a preset once and apply it to every relevant item.
CSV export that Whatnot accepts as-is
One click. The export follows Whatnot's bulk-import template. Open Inventory in Seller Hub on a computer, choose Import from CSV, and your listings appear as drafts, ready to review, publish and add to your show.
Prep is included in Plus & Pro.
Prep comes with the Plus and Pro plans. Start a 7-day free trial — add a card, run your first show within 14 days or the offer expires (no charge), then cancel anytime before day 8 and you're never charged. One login unlocks Prep on every surface.
Start your free trial →Got a comp or giveaway code? Redeem it here.