Now Stable

"New on the Web": For a given set of browsers, what APIs became stable and when, ordered reverse chronologically.

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Browsers
Features

Stable APIs

Below is a list of features that are in Chrome and Edge, ordered reverse chronologically by when they became stable (i.e, available in the last browser).

2026/1

API First Browser Date Last Browser Date Days Notes
webassembly.api.Memory.toFixedLengthBuffer 📋Chrome1/13/2026 Edge1/21/20268
webassembly.api.Memory.toResizableBuffer 📋Chrome1/13/2026 Edge1/21/20268

2025/5

API First Browser Date Last Browser Date Days Notes
webassembly.branch-hinting 📋Chrome5/27/2025 Edge5/29/20252
webassembly.jspi 📋Chrome5/27/2025 Edge5/29/20252

2025/2

API First Browser Date Last Browser Date Days Notes
webassembly.memory64 📋Chrome2/4/2025 Edge2/6/20252

2024/10

API First Browser Date Last Browser Date Days Notes
webassembly.api.Module.Module.compile_options 📋Chrome10/15/2024 Edge10/17/20242
webassembly.api.compileStreaming_static.compile_options 📋Chrome10/15/2024 Edge10/17/20242
webassembly.api.compile_static.compile_options 📋Chrome10/15/2024 Edge10/17/20242
webassembly.api.instantiateStreaming_static.compile_options 📋Chrome10/15/2024 Edge10/17/20242
webassembly.api.instantiate_static.compile_options 📋Chrome10/15/2024 Edge10/17/20242
webassembly.api.validate_static.compile_options 📋Chrome10/15/2024 Edge10/17/20242
webassembly.jsStringBuiltins 📋Chrome10/15/2024 Edge10/17/20242

2023/12

API First Browser Date Last Browser Date Days Notes
webassembly.multiMemory 📋Chrome12/5/2023 Edge12/7/20232

2023/11

API First Browser Date Last Browser Date Days Notes
webassembly.garbage-collection 📋Chrome10/31/2023 Edge11/2/20232
webassembly.typedFunctionReferences 📋Chrome10/31/2023 Edge11/2/20232

2023/7

API First Browser Date Last Browser Date Days Notes
webassembly.api.JSTag_static 📋Chrome7/18/2023 Edge7/21/20233

2023/6

API First Browser Date Last Browser Date Days Notes
webassembly.extended-constant-expressions 📋Chrome5/30/2023 Edge6/2/20233
webassembly.relaxed-SIMD 📋Chrome5/30/2023 Edge6/2/20233

2023/4

API First Browser Date Last Browser Date Days Notes
webassembly.tail-calls 📋Chrome4/4/2023 Edge4/6/20232

2021/11

API First Browser Date Last Browser Date Days Notes
webassembly.reference-types 📋Chrome11/15/2021 Edge11/19/20214

2021/10

API First Browser Date Last Browser Date Days Notes
webassembly.api.Exception 📋Chrome10/19/2021 Edge10/21/20212
webassembly.api.Exception.Exception 📋Chrome10/19/2021 Edge10/21/20212
webassembly.api.Exception.Exception.options_parameter_traceStack Chrome10/19/2021 Edge10/21/20212
webassembly.api.Exception.getArg 📋Chrome10/19/2021 Edge10/21/20212
webassembly.api.Exception.is 📋Chrome10/19/2021 Edge10/21/20212
webassembly.api.Exception.stack Chrome10/19/2021 Edge10/21/20212
webassembly.api.Tag 📋Chrome10/19/2021 Edge10/21/20212
webassembly.api.Tag.Tag 📋Chrome10/19/2021 Edge10/21/20212
webassembly.exception-handling 📋Chrome10/19/2021 Edge10/21/20212

2021/5

API First Browser Date Last Browser Date Days Notes
webassembly.fixed-width-SIMD 📋Chrome5/25/2021 Edge5/27/20212

2020/10

API First Browser Date Last Browser Date Days Notes
webassembly.multi-value 📋Edge10/9/2020 Chrome10/20/202011

2020/8

API First Browser Date Last Browser Date Days Notes
webassembly.BigInt-to-i64-integration 📋Chrome8/25/2020 Edge8/27/20202

2020/1

API First Browser Date Last Browser Date Days Notes
webassembly.api.Global 📋Chrome9/4/2018 Edge1/15/2020498
webassembly.api.Global.Global 📋Chrome9/4/2018 Edge1/15/2020498
Chrome: Constructing a Global with a value of v128 produces a TypeError.Chrome Android: Constructing a Global with a value of v128 produces a TypeError.Deno: Constructing a Global with a value of v128 produces a TypeError.Edge: Constructing a Global with a value of v128 produces a TypeError.Node.js: Constructing a Global with a value of v128 produces a TypeError.Quest Browser: Constructing a Global with a value of v128 produces a TypeError.Opera: Constructing a Global with a value of v128 produces a TypeError.Opera Android: Constructing a Global with a value of v128 produces a TypeError.Samsung Internet: Constructing a Global with a value of v128 produces a TypeError.WebView Android: Constructing a Global with a value of v128 produces a TypeError.
webassembly.api.Global.value 📋Chrome9/4/2018 Edge1/15/2020498
webassembly.api.Global.valueOf 📋Chrome9/4/2018 Edge1/15/2020498
webassembly.api.Memory.Memory.shared 📋Chrome4/23/2019 Edge1/15/2020267
Safari: Shared WebAssembly.Memory is gated behind COOP/COEP. For more detail, read Making your website "cross-origin isolated" using COOP and COEP.Safari on iOS: Shared WebAssembly.Memory is gated behind COOP/COEP. For more detail, read Making your website "cross-origin isolated" using COOP and COEP.WebView on iOS: Shared WebAssembly.Memory is gated behind COOP/COEP. For more detail, read Making your website "cross-origin isolated" using COOP and COEP.
webassembly.bulk-memory-operations 📋Chrome6/4/2019 Edge1/15/2020225
webassembly.mutable-globals 📋Chrome9/4/2018 Edge1/15/2020498
webassembly.threads-and-atomics 📋Chrome4/23/2019 Edge1/15/2020267

2019/6

API First Browser Date Last Browser Date Days Notes
webassembly.non-trapping-float-to-int-conversions 📋Edge10/2/2018 Chrome6/4/2019245

2018/10

API First Browser Date Last Browser Date Days Notes
webassembly.sign-extension-operations 📋Chrome9/4/2018 Edge10/2/201828

2017/10

API First Browser Date Last Browser Date Days Notes
webassembly.api 📋Chrome3/9/2017 Edge10/17/2017222
webassembly.api.CompileError 📋Chrome3/9/2017 Edge10/17/2017222
webassembly.api.CompileError.CompileError 📋Chrome3/9/2017 Edge10/17/2017222
webassembly.api.Instance 📋Chrome3/9/2017 Edge10/17/2017222
webassembly.api.Instance.Instance 📋Chrome3/9/2017 Edge10/17/2017222
webassembly.api.Instance.exports 📋Chrome3/9/2017 Edge10/17/2017222
webassembly.api.LinkError 📋Chrome3/9/2017 Edge10/17/2017222
webassembly.api.LinkError.LinkError 📋Chrome3/9/2017 Edge10/17/2017222
webassembly.api.Memory 📋Chrome3/9/2017 Edge10/17/2017222
webassembly.api.Memory.Memory 📋Chrome3/9/2017 Edge10/17/2017222
webassembly.api.Memory.buffer 📋Chrome3/9/2017 Edge10/17/2017222
webassembly.api.Memory.grow 📋Chrome3/9/2017 Edge10/17/2017222
webassembly.api.Module 📋Chrome3/9/2017 Edge10/17/2017222
webassembly.api.Module.Module 📋Chrome3/9/2017 Edge10/17/2017222
webassembly.api.Module.customSections_static 📋Chrome3/9/2017 Edge10/17/2017222
webassembly.api.Module.exports_static 📋Chrome3/9/2017 Edge10/17/2017222
webassembly.api.Module.imports_static 📋Chrome3/9/2017 Edge10/17/2017222
webassembly.api.RuntimeError 📋Chrome3/9/2017 Edge10/17/2017222
webassembly.api.RuntimeError.RuntimeError 📋Chrome3/9/2017 Edge10/17/2017222
webassembly.api.Table 📋Chrome3/9/2017 Edge10/17/2017222
webassembly.api.Table.Table 📋Chrome3/9/2017 Edge10/17/2017222
webassembly.api.Table.get 📋Chrome3/9/2017 Edge10/17/2017222
webassembly.api.Table.grow 📋Chrome3/9/2017 Edge10/17/2017222
webassembly.api.Table.length 📋Chrome3/9/2017 Edge10/17/2017222
webassembly.api.Table.set 📋Chrome3/9/2017 Edge10/17/2017222
webassembly.api.compileStreaming_static 📋Chrome7/25/2017 Edge10/17/201784
webassembly.api.compile_static 📋Chrome3/9/2017 Edge10/17/2017222
webassembly.api.instantiateStreaming_static 📋Chrome7/25/2017 Edge10/17/201784
webassembly.api.instantiate_static 📋Chrome3/9/2017 Edge10/17/2017222
webassembly.api.validate_static 📋Chrome3/9/2017 Edge10/17/2017222