max 60000 ms
loadingdeferring load — 3.0s left
A hidden image requests /api/delay, which the server holds open for the configured time. The browser’s loadevent — and any parent iframe’s onload — wait for it to settle.
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A hidden image requests /api/delay, which the server holds open for the configured time. The browser’s loadevent — and any parent iframe’s onload — wait for it to settle.