Budgets

BrowserOptions bounds page work and network resources:

csharp

var options = new BrowserOptions
{
    MaxTaskDuration = TimeSpan.FromSeconds(2),
    MemoryLimit = 128 * 1024 * 1024,
    MaxDomNodes = 100_000,
    MaxDocumentBytes = 8 * 1024 * 1024,
};

Important defaults:

Option	Default	Scope
`MaxTaskDuration`	5 s	One page turn
`MemoryLimit`	Unlimited	Managed allocation in one turn
`MaxActiveTimers`	1,000	One page engine
`MaxResponseBytes`	32 MiB	One script `fetch`/XHR response
`FetchTimeout`	30 s	One script fetch redirect chain
`MaxDocumentBytes`	32 MiB	One navigation document
`MaxSubresourceBytes`	8 MiB	One script, module, style, or frame resource
`SubresourceTimeout`	30 s	One subresource
`MaxDomNodes`	Unlimited	Document nodes and projected wrappers
`MaxFrameDocuments`	16	Fetched child-frame documents per load
`MaxRedirects`	20	One redirect chain

A turn is one posted page call, one event-loop drain, or one inline script. A host call exceeding its turn budget faults with TimeoutException; a runaway script or queued callback becomes a PageErrorKind.BudgetExceeded, and the page remains usable.

NavigationOptions.Timeout separately bounds a whole navigation. WaitForIdleAsync and WaitForNetworkIdleAsync also take caller-supplied ceilings.

Budgets ​

Budgets