docs: add payload size limit note to navigator.sendBeacon()#43471
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docs: add payload size limit note to navigator.sendBeacon()#43471
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Hi, I’ve added a note about the payload size limit for navigator.sendBeacon(). Please let me know if any changes are needed. Thanks! |
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Hi! This is my first contribution to MDN 😊 I’ve followed the contribution guidelines and ensured lint/tests pass. Please let me know if any changes or improvements are needed — happy to update! Thanks for your time 🙌 |
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(comment last updated: 2026-03-19 17:54:17) |
pepelsbey
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Mar 19, 2026
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Looks good overall, thank you! I'm only slightly concerned about the "typically", since it's a spec-defined limit that browsers seem to follow.
Co-authored-by: Vadim Makeev <hi@pepelsbey.dev>
Thanks for the feedback! I've removed any ambiguity and clarified that the limit is spec-defined, updated the unit to KiB, and noted that the request fails if exceeded. Please let me know if this looks good now 🙂
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LGTM if it looks good to Vadim. |
Thanks for the review! I've updated the wording to reflect the spec-defined behavior more accurately and removed ambiguity. Please let me know if this looks good now.
dsk-dev-ai
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Mar 19, 2026
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Fixes #42932
This PR adds a note about the payload size limit of navigator.sendBeacon(), clarifying that it is typically limited (~64 KB depending on the browser).
It also suggests using fetch() for larger data transfers.