About
About Marsdrop
Marsdrop is a privacy-first way to send a file. It's encrypted in your browser before it ever leaves, shared with a link, and deleted on your terms. We can't read your files — and we'll show you exactly why.
Why we built it
Most file-sharing tools ask you to trust that they won't look at your files. We didn't want to be trusted — we wanted to be verifiable. When a tool like Firefox Send shut down, millions of people lost a simple, private way to send something without handing it to a company that could read it. Marsdrop is our answer: a tool where privacy isn't a policy promise, it's how the software is built.
What we believe
Your files are yours
The server is a metadata broker — it never touches your plaintext or your keys.
No accounts, no tracking
No profiles. We collect the minimum needed to run the service and nothing else.
Privacy you can check
Not just take on faith. Open your network tab and watch the key never leave your browser.
Nothing lingers
Every drop has an expiry and a download limit, and it's deleted when it's done.
Who's behind it
Marsdrop is an independent project, built and run by a small team that cares about digital privacy. We're not backed by an ad business and we don't sell data — there's nothing to sell, because we can't see it. Questions, ideas, or concerns? Get in touch.