QuotaExceededError

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The QuotaExceededError interface represents an error when a requested operation would exceed a system-imposed storage quota.

Note: In browser versions before this interface was implemented, it was a regular DOMException. The subclassing allows for extra information like quota and requested to be included.

Constructor

QuotaExceededError(): Creates a QuotaExceededError object.

Instance properties

Also inherits properties from its ancestor DOMException.

QuotaExceededError.quota Read only: Returns the system-defined storage limit (in bytes) that was exceeded.
requested Read only: Returns the amount of storage (in bytes) that was requested during the operation.

Specifications

Specification
Web IDL # quotaexceedederror

Browser compatibility

	desktop					mobile
	Chrome	Edge	Firefox	Opera	Safari	Chrome Android	Firefox for Android	Opera Android	Safari on iOS	Samsung Internet	WebView Android	WebView on iOS
`QuotaExceededError` Experimental	Chrome – Full support Chrome 138 (Release date: 2025-06-24) footnote Full support	Edge – Full support Edge 138 (Release date: 2025-06-26) footnote Full support	Firefox – No support Firefox footnote No support	Opera – Full support Opera 122 (Release date: 2025-09-11) footnote Full support	Safari – No support Safari footnote No support	Chrome Android – Full support Chrome Android 138 (Release date: 2025-06-24) footnote Full support	Firefox for Android – No support Firefox for Android footnote No support	Opera Android – Full support Opera Android 91 (Release date: 2025-08-19) footnote Full support	Safari on iOS – No support Safari on iOS footnote No support	Samsung Internet – No support Samsung Internet footnote No support	WebView Android – Full support WebView Android 138 (Release date: 2025-06-24) footnote Full support	WebView on iOS – No support WebView on iOS footnote No support
`QuotaExceededError()` constructor Experimental	Chrome – Full support Chrome 138 (Release date: 2025-06-24) footnote Full support	Edge – Full support Edge 138 (Release date: 2025-06-26) footnote Full support	Firefox – No support Firefox footnote No support	Opera – Full support Opera 122 (Release date: 2025-09-11) footnote Full support	Safari – No support Safari footnote No support	Chrome Android – Full support Chrome Android 138 (Release date: 2025-06-24) footnote Full support	Firefox for Android – No support Firefox for Android footnote No support	Opera Android – Full support Opera Android 91 (Release date: 2025-08-19) footnote Full support	Safari on iOS – No support Safari on iOS footnote No support	Samsung Internet – No support Samsung Internet footnote No support	WebView Android – Full support WebView Android 138 (Release date: 2025-06-24) footnote Full support	WebView on iOS – No support WebView on iOS footnote No support
`quota` Experimental	Chrome – Full support Chrome 138 (Release date: 2025-06-24) footnote Full support	Edge – Full support Edge 138 (Release date: 2025-06-26) footnote Full support	Firefox – No support Firefox footnote No support	Opera – Full support Opera 122 (Release date: 2025-09-11) footnote Full support	Safari – No support Safari footnote No support	Chrome Android – Full support Chrome Android 138 (Release date: 2025-06-24) footnote Full support	Firefox for Android – No support Firefox for Android footnote No support	Opera Android – Full support Opera Android 91 (Release date: 2025-08-19) footnote Full support	Safari on iOS – No support Safari on iOS footnote No support	Samsung Internet – No support Samsung Internet footnote No support	WebView Android – Full support WebView Android 138 (Release date: 2025-06-24) footnote Full support	WebView on iOS – No support WebView on iOS footnote No support
`requested` Experimental	Chrome – Full support Chrome 138 (Release date: 2025-06-24) footnote Full support	Edge – Full support Edge 138 (Release date: 2025-06-26) footnote Full support	Firefox – No support Firefox footnote No support	Opera – Full support Opera 122 (Release date: 2025-09-11) footnote Full support	Safari – No support Safari footnote No support	Chrome Android – Full support Chrome Android 138 (Release date: 2025-06-24) footnote Full support	Firefox for Android – No support Firefox for Android footnote No support	Opera Android – Full support Opera Android 91 (Release date: 2025-08-19) footnote Full support	Safari on iOS – No support Safari on iOS footnote No support	Samsung Internet – No support Samsung Internet footnote No support	WebView Android – Full support WebView Android 138 (Release date: 2025-06-24) footnote Full support	WebView on iOS – No support WebView on iOS footnote No support

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Full support: Full support
No support: No support
: Experimental. Expect behavior to change in the future.

QuotaExceededError

Constructor

Instance properties

Specifications

Browser compatibility

Legend

See also