Content is loading…
Connect to any WebSocket server, send messages, and watch the live message log.
No messages yet — connect and send something.
Connect directly to any ws:// or wss:// endpoint from your browser, send text or JSON frames, and watch incoming messages arrive in a live, timestamped log. Handy for debugging realtime APIs, chat servers, or trading feeds without installing a desktop client. The connection runs entirely in your browser tab — nothing passes through our servers.
WebSocket Tester enables developers to connect directly to any ws:// or wss:// endpoint right from the browser to send text or JSON frames and monitor incoming messages in a live, timestamped log. Because the connection runs entirely within the browser tab, data processing remains client-side without passing through external servers. It eliminates the need to install dedicated desktop software for quick realtime API debugging, chat server testing, or viewing data feeds.
Good to know: Complex automated testing suites or heavy enterprise CI/CD integration pipelines may require more advanced desktop or command-line clients rather than an in-browser utility.
Learn how to connect to any WebSocket server and debug realtime messages directly from your browser in minutes.
Open the WebSocket Tester tool
Navigate to the WebSocket Tester tool in your browser to begin setting up your connection.
Enter your WebSocket endpoint URL
Input any valid ws:// or wss:// endpoint URL into the connection field to target your server.
Establish a live browser connection
Initiate the connection to link directly with your realtime API, chat server, or trading feed securely from your tab.
Send text or JSON frames
Compose and transmit your test payloads as text or JSON frames directly through the active connection.
Monitor incoming messages in real time
Watch incoming server responses arrive instantly in a live, timestamped message log for effective debugging.
Estimated time: PT2M
Share this tool
Send HTTP requests with custom headers, body, and auth — like Postman, in your browser.
Get a throwaway URL and inspect every webhook request sent to it, live.
Paste an OpenAPI/Swagger spec and browse every endpoint instantly — no upload.
Analyze browser HAR files — sizes, timings, and slowest requests.
Beautify, minify, and validate JSON data instantly.
Encode and decode Base64 strings instantly.
Generate v4 UUIDs instantly, single or in bulk.
Explain any code in plain language — all languages supported.
Percent-encode or decode URL strings instantly.
Encode/decode HTML entities like < > &.
Convert text or Markdown to a Word .docx file with live preview, RTL, and page-setup options.
Draw a Secret Santa with exclusions and share a private reveal link for each person.
Make custom bingo cards from your own words — play, print, or share a link.
Convert images to video with the Ken Burns zoom/pan effect. Add music and export as WebM.
Load and compare multiple URLs side by side in resizable iframes.
Rank anything with quick 1-v-1 matchups → a full ordered list you can share.
Convert Markdown to a fully customized, RTL-ready PDF.
See your public IP address plus full location, ISP, ASN, timezone, coordinates, and more.
