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History for this tool
The most recent data you entered in this tool, stored only in this browser.
Save what you type here, in this browser? Your work would go into this browser's local storage, so a refresh or a trip to another tool does not wipe it. You also get a short list of previous entries under the form, each one restorable with a click. Nothing is ever uploaded, and there is no account.
Being straight about the trade-off: anything kept there can be read by anyone who can use this browser profile, and by any script that later runs on this site. A tool page can hold a private key, a password or a signed token. Saving is convenient; it is not private.
Saved on this device
Your inputs and history are stored locally.
Not saved
This page forgets your work when you leave it.
About this tool
Pick one or more port numbers, with the option to stay above 1024 and to avoid the ports that are usually already taken.Questions
- Does it check whether the port is free?
- No. A browser cannot scan ports on another host. This picks numbers that are unlikely to clash — you still have to check your own machine.