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Data

WebTransport browser support

Support for every WebTransport interface and member, by browser. Generated at build time from MDN browser-compat-data.

How to read these tables

Each cell states the first version with support, or "No". The glyph and color only reinforce that text: supported, partial, preview or removed in preview, not supported, unknown. A leading "≤" means support began in that version or earlier. Support available only behind a flag is shown as "No (behind a flag)".

Data from MDN browser-compat-data v8.1.7, built . See also the WebTransport API on MDN. Download this data as JSON.

Support by interface

8 interfaces, 64 rows. Member names link to MDN. Scroll the table sideways on narrow screens.

WebTransport

Browser support for WebTransport and its members. Each cell gives the first supported version or No.
Member Chrome Edge Firefox Safari Chrome Android Firefox Android Safari iOS Opera Samsung Internet
(interface) spec 97 97 114 26.4 97 114 26.4 83 18.0
WebTransport() constructor spec 97 97 114 26.4 97 114 26.4 83 18.0
WebTransport.options_allowPooling parameter spec No No 114 26.4 No 114 26.4 No No
WebTransport.options_congestionControl parameter spec No No 114 26.4 No 114 26.4 No No
WebTransport.options_protocols parameter spec 143 143 155 26.4 143 155 26.4 127 30.0
WebTransport.options_requireUnreliable parameter spec No No 114 26.4 No 114 26.4 No No
WebTransport.options_serverCertificateHashes parameter spec 100 100 125 26.4 100 125 26.4 86 19.0
anticipatedConcurrentIncomingBidirectionalStreams experimental spec No No No 26.4 No No 26.4 No No
anticipatedConcurrentIncomingUnidirectionalStreams experimental spec No No No 26.4 No No 26.4 No No
byob_readers spec 109 109 114 26.4 109 114 26.4 95 21.0
close spec 97 97 114 26.4 97 114 26.4 83 18.0
closed spec 97 97 114 26.4 97 114 26.4 83 18.0
congestionControl spec No No 114 26.4 No 114 26.4 No No
createBidirectionalStream spec 97 97 114 26.4 97 114 26.4 83 18.0
createBidirectionalStream.options_sendOrder parameter spec No No 119 26.4 No 119 26.4 No No
createSendGroup spec No No 155 26.4 No 155 26.4 No No
createUnidirectionalStream spec 97 97 114 (partial) (1 note) 26.4 97 114 (partial) (1 note) 26.4 83 18.0
createUnidirectionalStream.byob_readers spec 109 109 114 26.4 109 114 26.4 95 21.0
createUnidirectionalStream.options_sendOrder parameter spec No No 119 26.4 No 119 26.4 No No
datagrams spec 97 97 114 26.4 97 114 26.4 83 18.0
draining spec No No 155 26.4 No 155 26.4 No No
exportKeyingMaterial experimental spec No No 155 No No No No No No
getStats spec No No 114 (partial) (1 note) 26.4 No 114 (partial) (1 note) 26.4 No No
incomingBidirectionalStreams spec 97 97 114 26.4 97 114 26.4 83 18.0
incomingUnidirectionalStreams spec 97 97 114 26.4 97 114 26.4 83 18.0
local_network_access experimental spec 147 147 No No 147 No No 131 No
protocol spec 143 143 155 26.4 143 155 26.4 127 30.0
ready spec 97 97 114 26.4 97 114 26.4 83 18.0
reliability spec 157 157 114 26.4 157 114 26.4 No No
responseHeaders experimental spec 157 157 No Preview 157 No No No No
supportsReliableOnly (static) spec 157 157 158 26.4 157 158 26.4 No No

WebTransportBidirectionalStream

Browser support for WebTransportBidirectionalStream and its members. Each cell gives the first supported version or No.
Member Chrome Edge Firefox Safari Chrome Android Firefox Android Safari iOS Opera Samsung Internet
(interface) spec 97 97 114 26.4 97 114 26.4 83 18.0
readable spec 97 97 114 26.4 97 114 26.4 83 18.0
readable.returns_WebTransportReceiveStream spec No No 114 26.4 No 114 26.4 No No
writable spec 97 97 114 26.4 97 114 26.4 83 18.0
writable.returns_WebTransportSendStream spec No No 114 26.4 No 114 26.4 No No

WebTransportDatagramDuplexStream

Browser support for WebTransportDatagramDuplexStream and its members. Each cell gives the first supported version or No.
Member Chrome Edge Firefox Safari Chrome Android Firefox Android Safari iOS Opera Samsung Internet
(interface) spec 97 97 114 26.4 97 114 26.4 83 18.0
byob_readers spec 109 109 No 26.4 109 No 26.4 95 21.0
createWritable spec No No 155 26.4 No 155 26.4 No No
incomingHighWaterMark deprecated non-standard 97 97 114 26.4 (removed in preview) 97 114 26.4 83 18.0
incomingMaxAge spec 97 97 114 26.4 97 114 26.4 83 18.0
incomingMaxBufferedDatagrams experimental spec 151 151 No Preview 151 No No 135 No
maxDatagramSize spec 97 97 114 26.4 97 114 26.4 83 18.0
outgoingHighWaterMark deprecated non-standard 97 97 114 26.4 (removed in preview) 97 114 26.4 83 18.0
outgoingMaxAge spec 97 97 114 26.4 97 114 26.4 83 18.0
outgoingMaxBufferedDatagrams experimental spec 151 151 No Preview 151 No No 135 No
readable spec 97 97 114 26.4 97 114 26.4 83 18.0
writable deprecated non-standard 97 97 114 No 97 114 No 83 18.0

WebTransportDatagramsWritable

Browser support for WebTransportDatagramsWritable and its members. Each cell gives the first supported version or No.
Member Chrome Edge Firefox Safari Chrome Android Firefox Android Safari iOS Opera Samsung Internet
(interface) spec No No 155 26.4 No 155 26.4 No No
sendGroup spec No No 155 26.4 No 155 26.4 No No
sendOrder spec No No 155 26.4 No 155 26.4 No No

WebTransportError

Browser support for WebTransportError and its members. Each cell gives the first supported version or No.
Member Chrome Edge Firefox Safari Chrome Android Firefox Android Safari iOS Opera Samsung Internet
(interface) spec 97 97 114 26.4 97 114 26.4 83 18.0
WebTransportError() constructor spec 97 97 114 26.4 97 114 26.4 83 18.0
source spec 97 97 114 26.4 97 114 26.4 83 18.0
streamErrorCode spec 97 97 114 26.4 97 114 26.4 83 18.0

WebTransportReceiveStream

Browser support for WebTransportReceiveStream and its members. Each cell gives the first supported version or No.
Member Chrome Edge Firefox Safari Chrome Android Firefox Android Safari iOS Opera Samsung Internet
(interface) spec No No 114 26.4 No 114 26.4 No No
getStats spec No No 114 26.4 No 114 26.4 No No

WebTransportSendGroup

Browser support for WebTransportSendGroup and its members. Each cell gives the first supported version or No.
Member Chrome Edge Firefox Safari Chrome Android Firefox Android Safari iOS Opera Samsung Internet
(interface) spec No No 155 26.4 No 155 26.4 No No
getStats spec No No 155 26.4 No 155 26.4 No No

WebTransportSendStream

Browser support for WebTransportSendStream and its members. Each cell gives the first supported version or No.
Member Chrome Edge Firefox Safari Chrome Android Firefox Android Safari iOS Opera Samsung Internet
(interface) spec No No 114 26.4 No 114 26.4 No No
getStats spec No No 114 26.4 No 114 26.4 No No
getWriter spec No No 114 26.4 No 114 26.4 No No
sendGroup spec No No 155 26.4 No 155 26.4 No No
sendOrder spec No No 121 26.4 No 121 26.4 No No

Cite this page

Title
WebTransport browser support matrix
Author
WebTransport Day (organization)
URL
https://webtransport.day/browser-support/
Updated

WebTransport Day. "WebTransport browser support matrix." Last updated October 31, 2026. https://webtransport.day/browser-support/

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