WebSocket Sec-WebSocket-Key
ClientClient handshake key—paste anything and get a fresh 16-byte key.
Generate a random Sec-WebSocket-Key (16-byte Base64).
About WebSocket Sec-WebSocket-Key
Generate a random Sec-WebSocket-Key (16-byte Base64). The interactive transform on this page runs in your browser tab—Toolcore does not need your paste for the core operation described above.
How to use this page
Paste or type in the main workspace, run the primary action from the toolbar, then copy or download the result. Use Load example when the page offers it, or URL prefill (?q= / ?qb=) so agents and tickets open the same input.
TPYdy4UXBA/2thMo2lX73Q==
Common use cases
- WebSocket Sec-WebSocket-Key for quick local checks without uploading data.
- Copy results into tickets, docs, or classroom notes.
Common mistakes to avoid
Unexpected input shape
See the intro and how-to notes for accepted formats.
FAQ
Is processing local?
Yes—this runs entirely in your browser.
Agent prefill?
Use q or qb for the main text field when supported.
More tools
Related utilities you can open in another tab—mostly client-side.
HTTP headers
ClientCommon request and response header fields—names, direction, and short summaries—filterable client-side.
HTTP fetch test
ClientSend GET/POST and other methods from your browser—see status and body; CORS limits apply.
URL parser
ClientSplit URLs into protocol, host, path, query, and hash—browser URL API; optional https:// assumption; no fetch.
Base64 & URL encoder
ClientUTF-8 Base64 encode/decode and URL component encode/decode in one workspace—paste, transform, copy.