To improve the speed and load time of your site, build Prebid.js for only the header bidding partners you choose.
Note: If you receive an error during download you most likely selected a configuration that is not supported. Verify that each bidder / module is available in the selected version. Also please note that even though you can download older versions of Prebid.js, Prebid only supports the most recent major version. Within a month or so after a major release (e.g. 3.x), we won’t patch the previous major release (e.g. 2.x).
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Alternatively, you can build Prebid.js from the source code. For instructions, see the Prebid.js README on GitHub.