WhatnotTools

Best Chrome extensions for Whatnot sellers (2026)

Updated 2026-11-11

The picks are grouped by job: labels first (WNLabelPro, Whatnot Autoprint, WhatLabels), then live show tools (BundleLive, SellDeck), then comps and pricing (Comp Buddy, Underpriced AI), then inventory (CutX). Order is by usefulness within the list, not paid placement. Public facts were checked 2026-11-06 against official sites and store listings. None of the picks is documented as using an official Whatnot API; some records leave that unconfirmed.

Extensions that read the Whatnot page can break when Whatnot changes its site, so test each one on a short show before you rely on it. Two of the label tools need a desktop app running beside Chrome. The first three all print labels, so most sellers need only one of them. SellDeck also covers inventory, which is why it sits in the live show group.

Prices are as of 2026-11-06 and can change; confirm on each maker's site.

  1. Prints a shipping label as each sale closes and matches it to the buyer's numbered box. Needs a desktop app running. As of 2026-11-06, plans start at $25/mo per platform.

  2. Sends Whatnot auction wins to a local desktop app that prints the label, with auto-print during streams. The store listing shows no price as of 2026-11-06.

  3. Prints item labels live during Whatnot shows from a Chrome extension; it also covers four other live platforms. Free to add with in-app purchases; no price listed as of 2026-11-06.

  4. Gives each live buyer a numbered bin as purchases come in, calls bin numbers out and prints bin labels, with show stats and a free-shipping chat helper. As of 2026-11-06, Basic is $29.99/mo, Pro $49.99/mo and Team $99.99/mo, with a 7-day trial and a $0.15 per-sale fee. Its 15-30% sales claim has no published method.

  5. Pauses matching eBay and Depop listings when a Whatnot show starts, restores unsold items afterward, and tracks show revenue and P&L. As of 2026-11-06, Free covers 25 items and 2 shows a month; paid plans run $8.99 to $24.99/mo. Less useful if you sell only on Whatnot.

  6. Comp Buddy logo

    Comp Buddy

    Sold-price comps for cards you watch on Whatnot streams, in browser or iOS

    Free plan · from $15/moLive Show Tools3

    Shows sold-price comps for cards while you watch a Whatnot show, with watchlist alerts. A free tier exists; as of 2026-11-06 Pro is $15/mo or $150/yr after a 7-day trial. Chrome extension and iOS app.

  7. Photo-to-listing pricing based on eBay sold listings, with titles and descriptions drafted for each item. Whatnot works only through its free browser extension, which fills listing forms; the site describes no sale detection for Whatnot. As of 2026-11-06, Starter is $5/mo for 30 scans.

  8. Promo video, thumbnail and ad tool for Whatnot sellers. Its Chrome companion logs live sales (item, price, buyer, order ID) into CutX inventory. As of 2026-11-06, Starter is $24.99/mo and Pro $44.99/mo; Whatnot features sit inside a broader ad platform.

At a glance

Best Chrome extensions for Whatnot sellers (2026): pricing, platforms and official Whatnot API status
AppPricingPlatformsOfficial Whatnot API
WNLabelProFrom $25/moChrome extension, Desktop, iOS, AndroidNot listed
Whatnot AutoprintPaidChrome extension, DesktopNot listed
WhatLabelsFree planChrome extensionNot listed
BundleLiveFrom $29.99/moWeb, Chrome extensionNot listed
SellDeckFree plan · from $8.99/moWeb, Chrome extensionNot listed
Comp BuddyFree plan · from $15/moChrome extension, iOSNot listed
Underpriced AIFree plan · from $5/moWeb, Chrome extension, iOS, AndroidNot listed
CutXFrom $24.99/moWeb, Chrome extensionNot listed

Prices checked by hand and may change; confirm on each maker's site.