Limited Availability WebAssembly

Memory64 (WebAssembly)

Instructions accept 64-bit memory indexes.

Baseline Status: This feature is currently Limited (not yet Baseline). Latest engine implementation shipped on Feb 6, 2025.

Desktop Browser Engine Support

Google Chrome

133

Supported

Mozilla Firefox

134

Supported

Apple Safari

—

Unsupported

Microsoft Edge

133

Supported

Mobile Browser Engine Support

Chrome Android

133

Firefox Android

134

Safari iOS

—

Specifications and References

MDN Browser Compat Data Keys: