storage.sync

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Safe to Use

storage.sync is not safe to use.

It’s supported by 33% of global browsers.

Browsers

ChromeDec 11, 2008v1.0.0
26%╱100%
100% of Chrome users are running a supported version.
SafariUnsupported
Safari does not support this feature.
EdgeApr 5, 2017v15.0.0
5%╱100%
100% of Edge users are running a supported version.
FirefoxApr 19, 2017v53.0.0
2%╱98%
There are no users of Firefox running a supported version.

Version Breakdown

 
Agent
Support
Adoption
Chrome
Dec 11, 2008 v1.0.0
26%╱100%
100% of Chrome users are running a supported version.
Dec 11, 2008 – Latest
v1.0.0+
26%╱100%

Full Support

Edge
Apr 5, 2017 v15.0.0
5%╱100%
100% of Edge users are running a supported version.
Apr 5, 2017 – Latest
v15.0.0+
5%╱100%

Full Support

Firefox
Apr 19, 2017 v53.0.0
2%╱98%
There are no users of Firefox running a supported version.
Apr 19, 2017 – Latest
v53.0.0+
2%╱98%

Full Support

Before version 79, storage quota limits are not enforced.

Firefox for Android
Unsupported
Firefox for Android does not support this feature.

No Support

Opera
Unsupported
Opera does not support this feature.

No Support

Safari
Unsupported
Safari does not support this feature.
Sep 16, 2020 – Latest
v14.0.0+
5%╱93%

Partial Support

Safari does not sync items saved in the sync storage area, i.e. it behaves the same as the local storage area.

Safari 15 and 15.1 erroneously store sync items in the local storage area. If unable to locate sync items, check for sync items in the local storage area and do a one-time migration to the sync storage area.

Safari on iOS
Unsupported
Safari on iOS does not support this feature.
Sep 20, 2021 – Latest
v15.0.0+
15%╱93%

Partial Support

Safari does not sync items saved in the sync storage area, i.e. it behaves the same as the local storage area.

Safari 15 and 15.1 erroneously store sync items in the local storage area. If unable to locate sync items, check for sync items in the local storage area and do a one-time migration to the sync storage area.

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