The service
4dots lets you send a note or files to someone with a four-digit code. Everything is encrypted in your browser and stored only for a short time. It’s free and open source. By using 4dots.app you agree to these terms and to our Privacy Policy.
What you can’t do
- Share anything illegal, including child sexual abuse material, malware or phishing, content that infringes someone else’s rights, or material meant to harass, threaten or defraud people.
- Try to guess other people’s codes, get around rate limits, overload the service, or interfere with its security.
We may block addresses that abuse the service.
Your content
You’re responsible for what you send and for who you give your code to. You keep all rights to your content. You only allow us to store and deliver its encrypted form so the service can work. We can’t read drops and we don’t review them.
Codes and security
Four digits are quick to share and also quick to guess, so 4dots limits wrong guesses, deletes drops on its own and offers burn after reading. Anyone with your code can open your drop until it’s gone. Share codes only with the person they’re meant for, and don’t use 4dots for secrets that must stay secret for long.
Limits and availability
A drop can hold up to 1 GB and lasts 10 minutes, an hour or a day. There are no backups: once a drop expires, burns or is deleted, it’s gone for good. We may change, limit or stop the service at any time, and it may sometimes be unavailable.
Reporting abuse
If a drop infringes your copyright or contains illegal content, report it to dmca@4dots.app as described on our DMCA & Copyright page. Every drop is deleted within a day at the latest, and we remove reported drops that still exist, normally within one working day.
No warranty
4dots is provided “as is”, without warranties of any kind. As far as the law allows, we aren’t liable for lost data, for someone opening a drop with a shared or guessed code, or for indirect damage from using the service. Nothing here limits rights you have as a consumer that the law doesn’t let us limit.
Open source
The code is available under the MIT license on GitHub. That license covers the code; these terms cover the service at 4dots.app.
Changes
We may update these terms. The date below shows the current version, and using 4dots after a change means you accept it.
Last updated 2 October 2026