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Bank & KYC verification

How to watermark your ID for a bank or KYC check

Before you send your ID to open an account or pass a verification, add a watermark that locks it to that one request — so a copy can't be reused against you.

Opening a bank account, onboarding with a fintech, or passing a KYC (“Know Your Customer”) check almost always means sending a photo of your ID — and often a selfie holding it. It feels routine. But you're handing over everything someone would need to impersonate you financially.

Why bank and KYC checks are high-stakes

Unlike a casual form, a verified ID copy is exactly what fraudsters want: it's the key to opening accounts, taking out loans, or passing someone else's KYC in your name. Financial institutions are also prime targets for data breaches, and onboarding documents are among the most valuable records they hold.

There's a second risk that's easy to miss: phishing. Scammers impersonate banks and ask you to “re-verify” your identity, harvesting a clean copy of your ID. Always confirm a request is genuine before sending anything — and even then, send it protected.

What you actually risk

The fix: watermark before you verify

Add a clear watermark naming the specific institution and date — for example, “For [Bank] verification only — 2026-06-18.” The bank can still read and verify everything it needs, but the copy becomes useless for any other purpose.

It doesn't break verification. A properly placed watermark leaves names, numbers and your photo fully legible, so it won't fail a bank's checks — it simply makes the copy worthless outside that one verification.

How to do it with Kavrylo

Kavrylo watermarks your ID in seconds, for free, and without uploading anything. Everything runs in your browser — fitting for a privacy step, your document never touches a server.

  1. Add your documentDrop in the photo or PDF of your ID or passport.
  2. Name the bank and dateFor example “For Bank X verification only”, with today's date.
  3. Download the protected fileSave your watermarked copy, ready to upload to the verification flow.
  4. Submit safelyThe copy is tied to that one check and can't be reused elsewhere.

Smart habits for sharing ID with banks

Frequently asked questions

Will a watermark cause my bank verification to fail?

No. A well-placed watermark keeps your name, document number and photo fully readable, so it passes verification while preventing reuse of the copy.

Is it safe to send a photo of my ID to a bank?

It's often required, but it carries risk. Confirm the request is legitimate, and watermark the copy with the institution's name and the date so it can't be reused if it's ever leaked.

Is my document uploaded anywhere?

No. Kavrylo runs entirely in your browser. No file is uploaded and no account is required — your ID never leaves your device.

Can I watermark a PDF as well as a photo?

Yes. Kavrylo handles both images and PDFs, so it works whatever format the verification flow expects.

How much does it cost?

Kavrylo is free, with no limits and no sign-up.

Protect your ID before you verify

Free, private, entirely in your browser. No account, no upload.

Watermark my ID