Not yet stable

For a given set of browsers, what APIs are not yet in all of them.

Example Comparisons
Browsers
Features

Summary

A count of the number of APIs are in Browser X but not in Browser Y.
Not in ChromeNot in Safari
In Chrome 11
In Safari 1

Unstable APIs

Below is a list of features that are not in all of Chrome and Safari

Raw Data

Quick Links:

WebAssembly Data

API First Browser Date Days in Limbo Notes
webassembly.api.Exception.stack Chrome10/19/20211612
webassembly.api.Module.Module.compile_options 📋Chrome10/15/2024520
webassembly.api.Tag.type 📋Safari12/13/20211557
webassembly.api.compileStreaming_static.compile_options 📋Chrome10/15/2024520
webassembly.api.compile_static.compile_options 📋Chrome10/15/2024520
webassembly.api.instantiateStreaming_static.compile_options 📋Chrome10/15/2024520
webassembly.api.instantiate_static.compile_options 📋Chrome10/15/2024520
webassembly.api.validate_static.compile_options 📋Chrome10/15/2024520
webassembly.jspi 📋Chrome5/27/2025296
webassembly.memory64 📋Chrome2/4/2025408
webassembly.multiMemory 📋Chrome12/5/2023835
webassembly.relaxed-SIMD 📋Chrome5/30/20231024