ClientIdentifier

import { Session, ClientIdentifier } from "node-tls-client";

const session = new Session({ clientIdentifier: ClientIdentifier.firefox_148 });

ClientIdentifier is a string enum of the profiles built into the native library. Each one sets the whole TLS and HTTP/2 fingerprint of that browser or app version. It does not set headers such as User-Agent; send those yourself. See Browser profiles.

Default: chrome_150, used when a session has neither clientIdentifier nor ja3string.
_psk / _PSK variants add the TLS pre_shared_key extension, so repeat connections resume the TLS session the way a returning browser does.
HTTP/3: only chrome_144, chrome_144_psk, firefox_147, firefox_147_psk and firefox_148 carry real HTTP/3 settings (native 1.16.0). See HTTP/3.
Unknown names fall back to the native library's default profile (chrome_150) without an error. chrome_154, chrome_154_psk and safari_27_2 need native 1.18.1 or newer: initTLS() downloads that, but a previously cached library it falls back to (with a warning) may be older.

In code, use the enum key (ClientIdentifier.chrome_131_psk). In plain JavaScript you can also pass the value string ("chrome_131_PSK"); for some profiles the two differ in case.

Chrome

Enum key	Value sent to native
`chrome_103`	`chrome_103`
`chrome_104`	`chrome_104`
`chrome_105`	`chrome_105`
`chrome_106`	`chrome_106`
`chrome_107`	`chrome_107`
`chrome_108`	`chrome_108`
`chrome_109`	`chrome_109`
`chrome_110`	`chrome_110`
`chrome_111`	`chrome_111`
`chrome_112`	`chrome_112`
`chrome_116_PSK`	`chrome_116_PSK`
`chrome_116_PSK_PQ`	`chrome_116_PSK_PQ`
`chrome_117`	`chrome_117`
`chrome_120`	`chrome_120`
`chrome_124`	`chrome_124`
`chrome_131`	`chrome_131`
`chrome_131_psk`	`chrome_131_PSK`
`chrome_130_psk`	`chrome_130_PSK`
`chrome_133`	`chrome_133`
`chrome_133_psk`	`chrome_133_PSK`
`chrome_144`	`chrome_144`
`chrome_144_psk`	`chrome_144_PSK`
`chrome_146`	`chrome_146`
`chrome_146_psk`	`chrome_146_PSK`
`chrome_150`	`chrome_150`
`chrome_150_psk`	`chrome_150_PSK`
`chrome_152`	`chrome_152`
`chrome_152_psk`	`chrome_152_PSK`
`chrome_154`	`chrome_154`
`chrome_154_psk`	`chrome_154_PSK`

Brave

Enum key	Value sent to native
`brave_146`	`brave_146`
`brave_146_psk`	`brave_146_PSK`

Safari

Enum key	Value sent to native
`safari_15_6_1`	`safari_15_6_1`
`safari_16_0`	`safari_16_0`
`safari_27_2`	`safari_27_2`
`safari_ipad_15_6`	`safari_ipad_15_6`
`safari_ios_15_5`	`safari_ios_15_5`
`safari_ios_15_6`	`safari_ios_15_6`
`safari_ios_16_0`	`safari_ios_16_0`
`safari_ios_17_0`	`safari_ios_17_0`
`safari_ios_18_0`	`safari_ios_18_0`
`safari_ios_18_5`	`safari_ios_18_5`
`safari_ios_26_0`	`safari_ios_26_0`

Firefox

Enum key	Value sent to native
`firefox_102`	`firefox_102`
`firefox_104`	`firefox_104`
`firefox_105`	`firefox_105`
`firefox_106`	`firefox_106`
`firefox_108`	`firefox_108`
`firefox_110`	`firefox_110`
`firefox_117`	`firefox_117`
`firefox_120`	`firefox_120`
`firefox_123`	`firefox_123`
`firefox_132`	`firefox_132`
`firefox_133`	`firefox_133`
`firefox_135`	`firefox_135`
`firefox_146_psk`	`firefox_146_PSK`
`firefox_147`	`firefox_147`
`firefox_147_psk`	`firefox_147_PSK`
`firefox_148`	`firefox_148`

Opera

Enum key	Value sent to native
`opera_89`	`opera_89`
`opera_90`	`opera_90`
`opera_91`	`opera_91`

Zalando apps

Enum key	Value sent to native
`zalando_android_mobile`	`zalando_android_mobile`
`zalando_ios_mobile`	`zalando_ios_mobile`

Nike apps

Enum key	Value sent to native
`nike_ios_mobile`	`nike_ios_mobile`
`nike_android_mobile`	`nike_android_mobile`

Other

Enum key	Value sent to native
`cloudscraper`	`cloudscraper`

MMS iOS

Enum key	Value sent to native
`mms_ios`	`mms_ios`
`mms_ios_1`	`mms_ios_1`
`mms_ios_2`	`mms_ios_2`
`mms_ios_3`	`mms_ios_3`

Mesh apps

Enum key	Value sent to native
`mesh_ios`	`mesh_ios`
`mesh_ios_1`	`mesh_ios_1`
`mesh_ios_2`	`mesh_ios_2`
`mesh_android`	`mesh_android`
`mesh_android_1`	`mesh_android_1`
`mesh_android_2`	`mesh_android_2`

Confirmed apps

Enum key	Value sent to native
`confirmed_ios`	`confirmed_ios`
`confirmed_android`	`confirmed_android`

OkHttp (Android)

Enum key	Value sent to native
`okhttp4_android_7`	`okhttp4_android_7`
`okhttp4_android_8`	`okhttp4_android_8`
`okhttp4_android_9`	`okhttp4_android_9`
`okhttp4_android_10`	`okhttp4_android_10`
`okhttp4_android_11`	`okhttp4_android_11`
`okhttp4_android_12`	`okhttp4_android_12`
`okhttp4_android_13`	`okhttp4_android_13`

ChromeCopy Anchor Link

BraveCopy Anchor Link

SafariCopy Anchor Link

FirefoxCopy Anchor Link

OperaCopy Anchor Link

Zalando appsCopy Anchor Link

Nike appsCopy Anchor Link

OtherCopy Anchor Link

MMS iOSCopy Anchor Link

Mesh appsCopy Anchor Link

Confirmed appsCopy Anchor Link

OkHttp (Android)Copy Anchor Link

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