Evite tareas extensas que bloqueen las solicitudes de red relacionadas con anuncios
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Descripción general
Esta auditoría verifica si la primera solicitud de anuncio se está retrasando debido a
tareas largas. Una tarea larga se define como un código JavaScript que bloquea el subproceso principal durante 50 ms o más. Si se realizan
tareas largas antes de una solicitud de anuncio, el navegador no podrá emitir la
solicitud hasta que se completen todas las tareas.
Recomendaciones
Examina las tareas que bloquean la primera solicitud de anuncio y busca formas de
quitarlas o reduce su tiempo de ejecución a menos de 100 ms. Estos son algunos enfoques para reducir el tiempo de ejecución:
Optimizar las tareas para que se ejecuten más rápido
Dividir las tareas en fragmentos más pequeños, que se ejecutan individualmente en menos de 100 ms
Retrasar las tareas hasta después de que se realicen las solicitudes de anuncios
Quitar las tareas del subproceso principal a través de un trabajador
Más información
Esta auditoría muestra las 10 tareas más largas por tiempo de ejecución, ordenadas por hora
de inicio (ascendente).
[null,null,["Última actualización: 2025-07-25 (UTC)"],[[["\u003cp\u003eThis audit identifies long-running JavaScript tasks (over 100ms) that delay the initial ad request, potentially impacting ad revenue.\u003c/p\u003e\n"],["\u003cp\u003eOptimizing, splitting, delaying, or offloading these tasks can improve ad loading times.\u003c/p\u003e\n"],["\u003cp\u003eThe audit highlights the top 10 longest tasks based on their execution time to help pinpoint problem areas.\u003c/p\u003e\n"],["\u003cp\u003eLong tasks block the main thread, preventing the browser from sending the ad request until they complete.\u003c/p\u003e\n"],["\u003cp\u003eAddressing these tasks is crucial for ensuring timely ad delivery and a smoother user experience.\u003c/p\u003e\n"]]],["This audit identifies long JavaScript tasks (100ms+) that delay the initial ad request. These tasks block the main thread, preventing the browser from issuing the request. The audit recommends reducing these tasks by optimizing, splitting them into smaller chunks, delaying their execution until after ad requests, or moving them off the main thread. The top ten longest tasks, sorted by start time, are displayed.\n"],null,["# Avoid long tasks that block ad-related network requests\n\nOverview\n--------\n\nThis audit checks whether or not the first ad request is being delayed by long\ntasks. A\n[long task](https://developer.mozilla.org/en-US/docs/Web/API/Long_Tasks_API) is\ndefined as JavaScript code that blocks the main thread for 50ms or more. If long\ntasks occur before an ad request, the browser will be unable to issue the\nrequest until all of the tasks complete.\n| **Note:** Although 50ms is the commonly accepted long task threshold, this audit will only flag tasks that block the main thread for 100ms or more. This is because shorter tasks generally have a smaller impact on ad loading.\n\nRecommendations\n---------------\n\nExamine the tasks that are blocking the first ad request and investigate ways to\nremove them or reduce their execution time below 100ms. Some approaches to\nreducing execution time include:\n\n- Optimizing tasks to execute faster\n- Splitting tasks into smaller chunks, which individually execute in \\\u003c 100ms\n- Delaying tasks until after ad requests are made\n- Moving tasks off of the main thread via a worker\n\nMore information\n----------------\n\nThis audit displays the top 10 longest tasks by execution time, sorted by start\ntime (ascending).\n\n[Are long JavaScript tasks delaying your Time to Interactive?](https://web.dev/long-tasks-devtools) \n\n[Inspect Network Activity In Chrome DevTools](https://developer.chrome.com/docs/devtools/network/) \n[View audit source](https://github.com/googleads/publisher-ads-lighthouse-plugin/tree/HEAD/lighthouse-plugin-publisher-ads/audits/ad-blocking-tasks.js) [Improve this article](https://github.com/googleads/publisher-ads-lighthouse-plugin/tree/HEAD/docs/audits/ad-blocking-tasks.md) [Report an issue](https://github.com/googleads/publisher-ads-lighthouse-plugin/issues/new?labels=documentation&template=documentation-feedback.md&title=Documentation+feedback%3A+ad-blocking-tasks.md)\n\n\u003cbr /\u003e"]]
