Kavrylo is an independent, privacy-first tool that protects your identity documents before you share them — without ever sending them anywhere.
We share copies of our most sensitive documents all the time — to rent an apartment, open a bank account, sign with an insurer, or pass a KYC check. And the moment a scan of your passport or ID leaves your hands, you lose all control over where it goes next.
A copy of an identity document is powerful. In the wrong hands it can be used to open accounts, take out credit, or impersonate you — long after you've forgotten you ever sent it. Yet most of us still email these documents as plain, unprotected images, simply because there was no easy way to do otherwise.
Kavrylo exists to put a simple layer of protection back in your hands. It adds a clear watermark that ties each copy to a specific purpose and date — for example, "For bank use only — 2026-06-18." If that copy ever resurfaces somewhere else, it's visibly out of context and far harder to misuse.
Our principle is simple: the safest place for your documents is your own device. That's why Kavrylo runs entirely in your browser. Your files are never uploaded, never stored on a server, and never seen by us. There's no account to create and nothing to log in to.
This isn't a promise you have to take on faith — it's how the tool is built. We can't lose, leak, or misuse documents we never receive in the first place. Privacy here is a property of the architecture, not a line in a policy.
The principles that shape every decision we make.
Your documents are processed in your browser and never leave your device. No uploads, no servers, no exceptions.
We don't ask for your email, your name, or a password. There's nothing to sign up for and no profile to track.
Protecting your identity shouldn't be a premium feature. Kavrylo is free to use, with no limits and no paywall.
An invisible mark protects nothing. Kavrylo applies a clear, legible watermark — so a misused copy is obvious to anyone.
Kavrylo is an independent project, built and maintained privately rather than by a large company. To keep the tool completely free and with no account, the website itself is supported by ads and basic, consent-based analytics — like most free sites. That's a separate thing from your documents: the file you watermark is never part of it. It's processed only in your browser and never reaches us or anyone else.
In other words, the privacy that matters most here — the privacy of your identity documents — isn't a business model we could be tempted to break. It's built into how the tool works. You can read exactly what the site does and doesn't collect, and control it, in our Privacy Policy.
Kavrylo is published and maintained independently. For any question about the project, how the tool works, or your data, you can always reach a real person.
Founder · Antoine Viala
Have a question, a suggestion, or a story to share? We'd genuinely like to hear it — head over to our contact page.
Free, private, and entirely in your browser. No account, no upload, no catch.
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