Clue Tools
InstaChat.im
Web tool  ·  no account  ·  no phone number

A private chat, started from a link.

Create a link, send it to one person, and talk. Messages are encrypted in the two browsers taking part. This site passes them along and holds no key. Nothing to install, nothing to sign up for.

1
Create the secret key and the invitation link

The key is created in this browser and placed after the # in the link, the part browsers do not send to any server.

2
Open the chat

Wait for the other person to join. Once both sides are connected, the invitation link stops working and fresh keys are created.

Optional: once both sides are in, the browser shows a permanent address for this conversation. Bookmark it to come back to the same chat later. One click discards the chat.

A Protected Chat conversation: each message shows the encrypted text the server sees beside the readable text in the browser
Each message shows what the server sees: the encrypted text, and nothing else.
No account, no phone numberNothing to register, for either side.
Keys made in your browserThis site relays encrypted messages and holds no key to them.
A one-time invitationThe link you send is replaced the moment the chat begins.
How it works

Two browsers, and nothing that needs to read along

Your device and theirs are already capable of encrypting what they send each other. No company needs to be in the middle to make the connection, keep a history, or know who is talking. This site only relays encrypted data between the two.

1

Create the link

A secret key is created in your browser and placed in the invitation link, after the #.

2

Send it to one person

By email, text or any chat. It works once. When both sides are connected, new keys and a new address replace it.

3

Talk

Messages are encrypted before they leave each browser and decrypted only on arrival. Bookmark the permanent address to continue later, or discard the chat in one click.

Security

Protected from this site, by design

The invitation link has two parts. The first tells the server which chat to open. The second, after the #, is the key. Browsers do not send that part to any server, so it stays in the two browsers taking part.

https://protected.chat:8443/startChat/a3f1c0…#R8vLq1Dn…
Sent to the serverAn unguessable address for the chat. On its own it decrypts nothing.
Stays in the browserThe key. Created on your device, shared only with the person who receives the link.
The key is not sent to this siteIt travels in the part of the link browsers keep locally.
The invitation works onceWhen both sides connect, new keys and a new address replace it. A link seen later by someone else is of no use.
Encrypted in transit and at restMessages are relayed and stored only in encrypted form.
No history on the server that can be readWhat the server holds, it cannot decrypt. Discard the chat in one click.
Why a link

For a conversation that should not be on record

Most messaging apps need a phone number and an account, keep a record of who talks to whom and when, and may hold copies of messages in backups. A chat opened from a link needs none of that, and leaves none of it behind.

Good for

  • A quick private exchange with someone you would rather not add to an app.
  • Sensitive details that should not sit in a chat history.
  • Talking across platforms: any browser, on any device, with nothing to install.
  • A single message rather than a conversation: use TextMe.im.
Questions

Straight answers

Is it safe to send the invitation by email or text?
Yes. The invitation is used once. As soon as both sides are connected, the chat moves to a new address with new keys, so a copy of the invitation found later cannot open the conversation.
Can this site read the chat?
No. Messages are encrypted in the browser before they are sent and decrypted only in the other browser. The key is in the part of the link that browsers do not send to any server. The site relays and stores encrypted data it cannot read.
Does the other person need an account or an app?
No. Only the link and a browser. Nothing to install and nothing to sign up for, on either side.
Can we continue the chat later?
Yes. Once both sides are connected, the browser shows a permanent address for the conversation. Bookmark it and open it again later. Or discard the chat in one click, after which it is gone.
Can more than two people join?
No. A chat is between the person who created the link and the person who received it.
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