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HTML 5 local storage subdomain size limit

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Aug 28, 2023 pm 11:09 PM

HTML 5本地存储子域的大小限制

HTML5’s localStorage database has a size limit. Standard sizes are 5 or 10MB per domain. The recommended limit is 5MB per source.

The following is stated −

User agents should guard against sites storing data under their origin&#39;s other
affiliated sites, e.g. storing up to the limit in a1.example.com,a2.example.com,
a3.example.com, etc, circumventing the mainexample.com storage limit.

For size restrictions −

A mostly arbitrary limit of five megabytes per origin is suggested.
Implementation feedback is welcome and will be used to update this suggestion
in the future.

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