WebSocket King Client

How to install an extension Open in Chrome Web Store

CRX ID

cbcbkhdmedgianpaifchdaddpnmgnknn

Status

Live on Store

Description from extension meta

A WebSocket client for testing and debugging connections.

Image from store

Description from store

WebSocket king is a a tool designed to assist in developing and debugging WebSocket connections.

Features include:

- A log of all incoming and outgoing messages to and from the WebSocket
- Open multiple connections to the WebSocket
- Save payloads that you commonly use to speed up development
- Multiple tabs to allow you to quickly send different payloads
- Manage and switch between multiple projects from a single interface
- Option to auto-reconnect to the server on disconnection for faster development

Request new features or submit a bug report!
https://github.com/tomlerendu/WebSocket-King-Issues/issues

Latest reviews

장윤수 2025-07-14: Currently not available in Chrome extensions. Please update..
Vladyslav Kostiuk 2024-11-30: Best Websocket extension =)
Code For What 2024-09-13: can you upgrade it to enable subscribe to a channel or send message to specific endpoint?
Ilya Iakovlev 2024-07-23: Guys, collection export/import feature is highly needed. Thanx!
Bill Plunkett 2024-06-05: Works great for me. Thanks very much!
Justin Luo 2024-05-22: even already stop updating. but still good and easy to use.
장윤수 2024-04-02: GOAT
류광록 2024-03-22: It's a good application. However, it is disappointing that it does not support multiple languages well.
Alexander Vashchuk 2024-03-13: There's a bug with the URL connection string whenever you edit it, it then automatically puts the cursor to the end after a single string, creating a terrible input developer experience (also, another anoying thing about this input is that you can't use CTRL+Z shortcut)
Abhimanyu Sharma 2023-12-17: Great extension, great work by devs.
Rabie Mohamed 2023-07-02: Great APP
Rabie Mohamed 2023-07-02: Great APP
Rain Kambar 2023-06-26: Отличное расширение, но не хватает небольшой автоматизации в виде цепочки WS запросов
Ahmed Ragab 2023-05-15: Great, but has a small bug, editing the address requires rewriting all of it from the beginning as the cursor moves to the end of the line after each character typed.
Ahmed Ragab 2023-05-15: Great, but has a small bug, editing the address requires rewriting all of it from the beginning as the cursor moves to the end of the line after each character typed.
최강재 2023-03-18: So unstable. Not recommend to use it.
최강재 2023-03-18: So unstable. Not recommend to use it.
Rizki Adiputra Judojono 2022-12-25: Best tool I can find for experimenting with WebSockets. Whoever built this, thank you for making my life so much easier.
Rizki Adiputra Judojono 2022-12-25: Best tool I can find for experimenting with WebSockets. Whoever built this, thank you for making my life so much easier.
Murray Hopkins 2022-11-17: Excellent tool. I use it constantly while developing my socket based API. Thank you.
Murray Hopkins 2022-11-17: Excellent tool. I use it constantly while developing my socket based API. Thank you.
developer graff 2022-04-21: Great
developer graff 2022-04-21: Great
Иван Федейкин 2022-04-14: Баги при вводе url
Rezaul Karim Shaon 2022-03-16: Alhamdulillah, web socket king helps me while developing web socket. This is much light weight than postman. This is a good development tool.
Rezaul Karim Shaon 2022-03-16: Alhamdulillah, web socket king helps me while developing web socket. This is much light weight than postman. This is a good development tool.
Pascal de cort 2022-01-11: No other app does it better!!! Some minor tweaks are needed but nothing compares to this! Thank you a lot for saving me a lot of time!
Pascal de cort 2022-01-11: No other app does it better!!! Some minor tweaks are needed but nothing compares to this! Thank you a lot for saving me a lot of time!
Aaron D 2021-11-22: Super irritating bug: when you're trying to edit the URL somewhere mid-string, every single character you type puts the cursor at the end of the URL string. So you have to click back to where you want to type for every character.
Aaron D 2021-11-22: Super irritating bug: when you're trying to edit the URL somewhere mid-string, every single character you type puts the cursor at the end of the URL string. So you have to click back to where you want to type for every character.
Yarik Foksha 2021-11-17: The best of all analogues, 5 stars
Yarik Foksha 2021-11-17: The best of all analogues, 5 stars
Sergio Martini 2021-11-04: Amazing!!!!! I use it all day. all night!
Sergio Martini 2021-11-04: Amazing!!!!! I use it all day. all night!
Камиль Талипов 2021-09-01: different payload tabs - nice feature but your app not support receive binary format after receive binary, window becomes white and it the end (need clear site data) error from chrome console: Error: Minified React error #31; visit https://reactjs.org/docs/error-decoder.html?invariant=31&args[]=%5Bobject%20Blob%5D for the full message or use the non-minified dev environment for full errors and additional helpful warnings. ... at t.unstable_runWithPriority (2.8ea5f8d4.chunk.js:2)
J B 2021-07-04: Best & only useful addon for Websockets
J B 2021-07-04: Best & only useful addon for Websockets
Marco Antonio Perez Lopez 2021-07-02: So far so good, it does what's required without unnecessary complication or fuss.
Marco Antonio Perez Lopez 2021-07-02: So far so good, it does what's required without unnecessary complication or fuss.
Tai Chen Li 2021-06-07: I am lovin' it.
Tai Chen Li 2021-06-07: I am lovin' it.
Nikita Tonkoshkur 2021-03-09: Has everything I need to be able to test websocket server from multiple clients. Highly recommend.
Nikita Tonkoshkur 2021-03-09: Has everything I need to be able to test websocket server from multiple clients. Highly recommend.
Kacper 2021-03-09: It's poor. Very nice design, card view is a masterpiece. But functionality is poor. That's it.
Kacper 2021-03-09: It's poor. Very nice design, card view is a masterpiece. But functionality is poor. That's it.
Meir Blumenfeld 2021-03-02: The best!!!
Meir Blumenfeld 2021-03-02: The best!!!
Shane Mai 2021-02-25: It is beautiful, but not working. Once i clicked "Send" the page became blank. And the page can never be open again. 2.8ea5f8d4.chunk.js:2 Error: Minified React error #31; visit https://reactjs.org/docs/error-decoder.html?invariant=31&args[]=object%20with%20keys%20%7B%7D for the full message or use the non-minified dev environment for full errors and additional helpful warnings. at Oi (2.8ea5f8d4.chunk.js:2) at 2.8ea5f8d4.chunk.js:2 at Na (2.8ea5f8d4.chunk.js:2) at Vu (2.8ea5f8d4.chunk.js:2) at xc (2.8ea5f8d4.chunk.js:2) at jc (2.8ea5f8d4.chunk.js:2) at Sc (2.8ea5f8d4.chunk.js:2) at yc (2.8ea5f8d4.chunk.js:2) at 2.8ea5f8d4.chunk.js:2 at t.unstable_runWithPriority (2.8ea5f8d4.chunk.js:2) uu @ 2.8ea5f8d4.chunk.js:2 n.callback @ 2.8ea5f8d4.chunk.js:2 di @ 2.8ea5f8d4.chunk.js:2 hu @ 2.8ea5f8d4.chunk.js:2 Pc @ 2.8ea5f8d4.chunk.js:2 t.unstable_runWithPriority @ 2.8ea5f8d4.chunk.js:2 Bo @ 2.8ea5f8d4.chunk.js:2 Tc @ 2.8ea5f8d4.chunk.js:2 yc @ 2.8ea5f8d4.chunk.js:2 (anonymous) @ 2.8ea5f8d4.chunk.js:2 t.unstable_runWithPriority @ 2.8ea5f8d4.chunk.js:2 Bo @ 2.8ea5f8d4.chunk.js:2 Yo @ 2.8ea5f8d4.chunk.js:2 qo @ 2.8ea5f8d4.chunk.js:2 gc @ 2.8ea5f8d4.chunk.js:2 notify @ 2.8ea5f8d4.chunk.js:2 t.notifyNestedSubs @ 2.8ea5f8d4.chunk.js:2 t.handleChangeWrapper @ 2.8ea5f8d4.chunk.js:2 y @ 2.8ea5f8d4.chunk.js:2 (anonymous) @ main.4b0e5aed.chunk.js:1 (anonymous) @ 2.8ea5f8d4.chunk.js:2 dispatch @ 2.8ea5f8d4.chunk.js:2 (anonymous) @ main.4b0e5aed.chunk.js:1 l @ 2.8ea5f8d4.chunk.js:2 (anonymous) @ 2.8ea5f8d4.chunk.js:2 (anonymous) @ 2.8ea5f8d4.chunk.js:2 r @ 2.8ea5f8d4.chunk.js:2 u @ 2.8ea5f8d4.chunk.js:2 Promise.then (async) r @ 2.8ea5f8d4.chunk.js:2 u @ 2.8ea5f8d4.chunk.js:2 (anonymous) @ 2.8ea5f8d4.chunk.js:2 (anonymous) @ 2.8ea5f8d4.chunk.js:2 (anonymous) @ main.4b0e5aed.chunk.js:1 (anonymous) @ 2.8ea5f8d4.chunk.js:2 (anonymous) @ main.4b0e5aed.chunk.js:1 Nc @ 2.8ea5f8d4.chunk.js:2 t.unstable_runWithPriority @ 2.8ea5f8d4.chunk.js:2 Bo @ 2.8ea5f8d4.chunk.js:2 Rc @ 2.8ea5f8d4.chunk.js:2 (anonymous) @ 2.8ea5f8d4.chunk.js:2 L @ 2.8ea5f8d4.chunk.js:2 w.port1.onmessage @ 2.8ea5f8d4.chunk.js:2 2.8ea5f8d4.chunk.js:2 Uncaught (in promise) Error: Minified React error #31; visit https://reactjs.org/docs/error-decoder.html?invariant=31&args[]=object%20with%20keys%20%7B%7D for the full message or use the non-minified dev environment for full errors and additional helpful warnings. at Oi (2.8ea5f8d4.chunk.js:2) at 2.8ea5f8d4.chunk.js:2 at Na (2.8ea5f8d4.chunk.js:2) at Vu (2.8ea5f8d4.chunk.js:2) at xc (2.8ea5f8d4.chunk.js:2) at jc (2.8ea5f8d4.chunk.js:2) at Sc (2.8ea5f8d4.chunk.js:2) at yc (2.8ea5f8d4.chunk.js:2) at 2.8ea5f8d4.chunk.js:2 at t.unstable_runWithPriority (2.8ea5f8d4.chunk.js:2)
Shane Mai 2021-02-25: It is beautiful, but not working. Once i clicked "Send" the page became blank. And the page can never be open again. 2.8ea5f8d4.chunk.js:2 Error: Minified React error #31; visit https://reactjs.org/docs/error-decoder.html?invariant=31&args[]=object%20with%20keys%20%7B%7D for the full message or use the non-minified dev environment for full errors and additional helpful warnings. at Oi (2.8ea5f8d4.chunk.js:2) at 2.8ea5f8d4.chunk.js:2 at Na (2.8ea5f8d4.chunk.js:2) at Vu (2.8ea5f8d4.chunk.js:2) at xc (2.8ea5f8d4.chunk.js:2) at jc (2.8ea5f8d4.chunk.js:2) at Sc (2.8ea5f8d4.chunk.js:2) at yc (2.8ea5f8d4.chunk.js:2) at 2.8ea5f8d4.chunk.js:2 at t.unstable_runWithPriority (2.8ea5f8d4.chunk.js:2) uu @ 2.8ea5f8d4.chunk.js:2 n.callback @ 2.8ea5f8d4.chunk.js:2 di @ 2.8ea5f8d4.chunk.js:2 hu @ 2.8ea5f8d4.chunk.js:2 Pc @ 2.8ea5f8d4.chunk.js:2 t.unstable_runWithPriority @ 2.8ea5f8d4.chunk.js:2 Bo @ 2.8ea5f8d4.chunk.js:2 Tc @ 2.8ea5f8d4.chunk.js:2 yc @ 2.8ea5f8d4.chunk.js:2 (anonymous) @ 2.8ea5f8d4.chunk.js:2 t.unstable_runWithPriority @ 2.8ea5f8d4.chunk.js:2 Bo @ 2.8ea5f8d4.chunk.js:2 Yo @ 2.8ea5f8d4.chunk.js:2 qo @ 2.8ea5f8d4.chunk.js:2 gc @ 2.8ea5f8d4.chunk.js:2 notify @ 2.8ea5f8d4.chunk.js:2 t.notifyNestedSubs @ 2.8ea5f8d4.chunk.js:2 t.handleChangeWrapper @ 2.8ea5f8d4.chunk.js:2 y @ 2.8ea5f8d4.chunk.js:2 (anonymous) @ main.4b0e5aed.chunk.js:1 (anonymous) @ 2.8ea5f8d4.chunk.js:2 dispatch @ 2.8ea5f8d4.chunk.js:2 (anonymous) @ main.4b0e5aed.chunk.js:1 l @ 2.8ea5f8d4.chunk.js:2 (anonymous) @ 2.8ea5f8d4.chunk.js:2 (anonymous) @ 2.8ea5f8d4.chunk.js:2 r @ 2.8ea5f8d4.chunk.js:2 u @ 2.8ea5f8d4.chunk.js:2 Promise.then (async) r @ 2.8ea5f8d4.chunk.js:2 u @ 2.8ea5f8d4.chunk.js:2 (anonymous) @ 2.8ea5f8d4.chunk.js:2 (anonymous) @ 2.8ea5f8d4.chunk.js:2 (anonymous) @ main.4b0e5aed.chunk.js:1 (anonymous) @ 2.8ea5f8d4.chunk.js:2 (anonymous) @ main.4b0e5aed.chunk.js:1 Nc @ 2.8ea5f8d4.chunk.js:2 t.unstable_runWithPriority @ 2.8ea5f8d4.chunk.js:2 Bo @ 2.8ea5f8d4.chunk.js:2 Rc @ 2.8ea5f8d4.chunk.js:2 (anonymous) @ 2.8ea5f8d4.chunk.js:2 L @ 2.8ea5f8d4.chunk.js:2 w.port1.onmessage @ 2.8ea5f8d4.chunk.js:2 2.8ea5f8d4.chunk.js:2 Uncaught (in promise) Error: Minified React error #31; visit https://reactjs.org/docs/error-decoder.html?invariant=31&args[]=object%20with%20keys%20%7B%7D for the full message or use the non-minified dev environment for full errors and additional helpful warnings. at Oi (2.8ea5f8d4.chunk.js:2) at 2.8ea5f8d4.chunk.js:2 at Na (2.8ea5f8d4.chunk.js:2) at Vu (2.8ea5f8d4.chunk.js:2) at xc (2.8ea5f8d4.chunk.js:2) at jc (2.8ea5f8d4.chunk.js:2) at Sc (2.8ea5f8d4.chunk.js:2) at yc (2.8ea5f8d4.chunk.js:2) at 2.8ea5f8d4.chunk.js:2 at t.unstable_runWithPriority (2.8ea5f8d4.chunk.js:2)
Tanakorn Rojnirunchai 2021-02-03: Great extension! It's very easy to use.

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