Full Glossary
Auction Formats

Online Auction

An auction conducted entirely or partially through an internet platform, where bidders participate remotely via web browser or mobile app. Can be timed (bidding opens and closes at set times) or live (simulcast alongside in-person bidding).

How It Works in Practice

Online auctions have transformed the estate auction industry by extending buyer pools from local drive-up attendance to national and international reach. The shift to online accelerated dramatically during 2020 and never reversed. For auctioneers, online sales require more upfront cataloging work (every lot needs photos and descriptions visible on screen) but typically generate higher total revenue through increased competition. Major platforms include HiBid, LiveAuctioneers, Proxibid, and AuctionZip.

Frequently Asked Questions

What platform is best for online auctions?
It depends on your category. HiBid dominates estate and general auctions with the largest U.S. buyer pool. LiveAuctioneers is stronger for fine art and high-end antiques. Proxibid serves industrial and commercial sectors. AuctionZip offers free basic listings. Many auctioneers list on 2–3 platforms simultaneously to maximize buyer reach, exporting catalogs via CSV to each platform.
How do I set up an online auction?
Create an account on your chosen platform, photograph and catalog all lots, upload your catalog (typically via CSV import), set auction dates and terms (buyer's premium, payment, pickup), and market the sale. The cataloging phase is the most time-intensive part — AI cataloging tools reduce this from days to hours. Most platforms provide seller onboarding guides specific to their CSV format requirements.

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