Watermark your passport, ID card, driver's license or PDF before you hand it over. Every mark is stamped Secured by Kavrylo — and your file never leaves your device.
Upload, customize, download. Everything happens on your device — nothing is ever sent to a server.
Every watermark also carries a Secured by Kavrylo attribution line, so anyone who receives the file can see it was protected here and tied to its intended use.
No technical knowledge required. Your file is loaded, marked and saved without ever leaving the page.
Pick a photo of your ID card, passport or driver's license — or a PDF. It loads straight into your browser, with nothing sent anywhere.
Write what the document is for and choose a layout. Add today's date to lock the file to one specific request or recipient.
Save the marked file and send it. The repeating overlay — stamped Secured by Kavrylo — makes the document unusable outside its stated context.
No tradeoffs, no fine print. The whole tool is designed so your most sensitive documents stay yours.
Kavrylo uses your browser's native Canvas API and JavaScript PDF libraries. No server receives your documents — not even for a moment.
Upload a multi-page PDF and export the result as a watermarked PDF or as individual PNG images. Every page is processed automatically.
An invisible watermark is useless. Kavrylo renders a bold, repeating overlay — with Kavrylo attribution — that stays obvious while the document remains fully legible.
Choose the wording and layout, and add today's date in one click to tie the document to a specific recipient or purpose.
No. Everything runs locally in your browser. No file, image or metadata is ever transmitted. After the page has loaded, Kavrylo even works offline.
Yes. Kavrylo processes every page automatically. Export it as a single watermarked PDF, or as individual PNG images — one per page.
When you share a scan of your passport or ID — for a rental, a bank or insurance — the recipient could reuse it elsewhere. A watermark stating the intended use and date, marked Secured by Kavrylo, makes the document useless outside that specific context.
It's a small attribution line woven into the watermark pattern. It signals that the document was deliberately protected before sharing — adding a layer of accountability without affecting readability.
Yes, completely free. No usage limits, no account, no subscriptions.
Free, private, and entirely in your browser. No account, no upload, no catch.
Open the watermark tool