BidJS
BidJS is paid JavaScript software for running timed and webcast auctions on an auctioneer’s own website and domain.
What BidJS is
BidJS is paid JavaScript software for running timed and webcast auctions on an auctioneer’s own website and domain. Timed auctions support scheduled or staggered lot closings, maximum bids, overtime extensions, Buy Now, Make Offer, and private treaty listings. Webcast auctions combine floor, phone, and internet bidding in real time. Teams can require identity verification, refundable deposits, or manual approval before bidders gain access. BidJS calculates buyer’s premiums, creates itemised invoices, and connects with Stripe for deposits and Xero for accounting. Installation is available through WordPress or a JavaScript plugin for WordPress, Joomla, Drupal, custom-built, and other sites. Bidders use desktop, tablet, or mobile browsers without downloading an app; a branded native app is optional. Multilingual content and local currency formatting are supported. Bidder data can be exported. Listed plans include a £200 a month developer sandbox, £300 a month annual contract, and £400 a month month-to-month.
Good
- Supports timed and webcast auctions
- Maximum bids and overtime extensions
- Browser bidding without app downloads
- Stripe and Xero connections
- Bidder data export available
Watch out
- No free plan
- Pricing is paid and contract-based
- Native app costs extra
Who it suits
BidJS suits auctioneers running timed or webcast sales on their own domains. It is relevant to fine art, antiques, industrial, real estate, agricultural, and charity auction businesses.
Verdict
BidJS combines auction formats, bidder controls, invoicing, payments, and website integration. Its browser-based access supports auctioneers wanting auctions embedded in their existing sites.
Plans and prices
From BidJS's own pricing page, checked 11 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Developer sandbox | £200 a month | Private test environment with sample sales, lots, registrants, and API credentials · Free for 30 days, then monthly until you cancel |
| BidJS annual contract | £300 a month | Unlimited lot listings per month · No commission on sales · Annual contract |
| BidJS month-to-month | £400 a month | Unlimited lot listings per month · No commission on sales · Cancel before the next billing period · Monthly; no annual commitment |
The facts
Each one read from BidJS's own pages, with the date it was checked.
What it does
- Bidders and deposits
- Auction teams can configure identity verification, refundable deposits, or manual approval before bidders receive access.checked 11 Oct 2026
- Bidding formats
- Timed auctions support scheduled and staggered lot closings, max bids, and overtime extensions; webcast auctions combine floor, phone, and internet bids in real time.checked 11 Oct 2026
- Data portability
- Bidder data is exportable, and Bidlogix says it does not use bidder data beyond delivering the BidJS service.checked 11 Oct 2026
- Languages and currencies
- BidJS supports multilingual content and displays auction amounts and invoices in supported currencies using local formatting.checked 11 Oct 2026
- Mobile access
- Bidders can browse, register, and bid in modern desktop, tablet, and mobile browsers without downloading an app; a branded native app is an optional extra.checked 11 Oct 2026
- Payments and invoices
- BidJS calculates buyer’s premium, generates itemised invoices, and supports Stripe deposit processing and Xero accounting connections.checked 11 Oct 2026
- Privacy and compliance
- BidJS is built for GDPR compliance, with data processing agreements available on request and personal data processed and stored in the EU by default.checked 11 Oct 2026
- Product
- BidJS is a JavaScript embed for running timed and webcast auctions on an auctioneer’s own website and domain.checked 11 Oct 2026
- Sales options
- Timed auctions can include Buy Now, Make Offer, and private treaty listings.checked 11 Oct 2026
- Security
- Management API requests use cryptographic signature authentication, and BidJS runs across multiple availability zones with automatic failover.checked 11 Oct 2026
- Support
- The maker says support is available when needed and provides a support portal; its about page says support staff work directly with the software team.checked 11 Oct 2026
- Typical customers
- BidJS is used by fine art, antiques, industrial, real estate, agricultural, and charity auctioneers.checked 11 Oct 2026
- Website installation
- The product offers a WordPress installation route and a JavaScript plugin for WordPress, Joomla, Drupal, custom-built sites, and other websites.checked 11 Oct 2026
The company
- Headquarters
- Brighton, East Sussex, United Kingdomchecked 28 Sep 2026
- Maker and location
- BidJS is made by Bidlogix, which says it began building auction technology in Brighton in 2008.checked 11 Oct 2026
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