Create a Telegram session string

Client library

Pyrogram v2 Python + Hydrogram, Kurigram Telethon Python + GramJS, gotd GramJS JavaScript npm: telegram mtcute v3 TypeScript @mtcute/core, /web

API ID

API hash

Find both under API development tools at my.telegram.org (opens in a new tab).

Phone number

Include the country code, for example +91 98765 43210.

Remember API ID and hash on this device Saved only in this browser. Leave this off on a shared computer.

How StringLab handles your login

Server memory only: API credentials, login codes, passwords and session strings are never written to the server’s disk or logs.
Ten-minute limit: An unfinished sign-in expires after 10 minutes. Starting over removes it at once.
Deleted on delivery: Once your string is ready, the server drops its copy and disconnects from Telegram.
One format: Only the client you choose is generated.
Browser storage is opt-in: Only your API ID and hash, and only when you tick Remember. Phone numbers, codes, passwords and sessions are never saved in your browser.

Anyone who runs this server can change its code or read its memory. Only sign in on a deployment whose operator you trust.