Hide Like A Pro
HILIA hides any file inside an ordinary-looking image, reveals it later, and adds covert or visible watermarks — all in your browser.
Hide & reveal
Tuck any file inside a PNG, WebP or JPEG. It looks like a normal picture — until you reveal it with the passcode.
Covert watermark
Stamp an invisible ID or logo that only shows up when the image is adjusted or run through Reveal.
Visible watermark
Overlay a logo or text at any size, angle and opacity — a classic diagonal repeat or a single mark.
How it works
1
Pick an image
Drop in a photo to use as the carrier.
2
Hide or stamp
Hide a file, or add a covert / visible watermark. Download the result.
3
Reveal later
Anyone with the passcode (or the Reveal tool) gets the hidden data or logo back.
Prefer an app? The Android version does hide & reveal on your phone. (The store build is older than this web tool.)