{"page":"/blog/header-bidding-explained","modified":"2026-11-10","license":"https://creativecommons.org/licenses/by/4.0/","columns":["Timer","Example value","Rule in Prebid's guide"],"rows":[["Auction timeout","1,000 ms (publisher's choice)","Balance revenue against page speed"],["Server-side timeout","750 ms","50% to 75% of the auction timeout; default 75% (Prebid)"],["tmax sent to server-side bidders","Below 750 ms","Prebid Server trims a buffer for the return trip"],["Failsafe timeout","Well above 1,000 ms","Much larger than the auction timeout"]],"sourceUrls":[[],["https://docs.prebid.org/features/timeouts.html"],[],[]]}