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SnapSeal App

Quick start

Welcome to SnapSeal App.

Capture, annotate, redact, compare and download from one browser extension. Every local tool is free.

Free tools. Your images stay with you.

01

Capture the whole webpage

Turn a scrolling webpage into a full-page screenshot, or capture just the part you need. Annotate, redact and save PNG, JPEG or WebP files on your device.

Full-page screenshot guide
02

Protect images, files and text

Encrypt an image, file or note with AES-256-GCM and carry it inside a PNG with noise or a public cover picture. Unlock it in your browser with the password.

Image encryption guide

Protect with a password

An image only your password can open.

Encrypt an image, file or note with AES-256-GCM and carry it inside a PNG with noise or a public cover picture. Unlock it in your browser with the password.

  1. 01

    Protect file

    Choose an image and a strong password in the extension. On the website, you can also protect files or text.

  2. 02

    Send it

    Send the downloaded ZIP or PNG as a file. Send the password separately.

  3. 03

    Unlock file

    The recipient unlocks it here, without an account or extension.

Protect fileUnlock fileOn your device. On your terms.

Can I send it as a photo?Experimental recovery after JPEG compression. Resizing is not supported. Sending the original PNG or ZIP as a file is safest.

The toolkit

Everything you need for a clear screenshot

Pin SnapSeal App to your browser toolbar, then click its icon to take your first screenshot.

Open SnapSeal from the browser toolbar and choose Whole page, Visible, Select or Crop. Open the result to edit, copy, download or protect it.

01

Capture the whole page

Save a scrolling page, visible tab, selected element or custom region.

02

Edit and redact

Add arrows, notes and shapes. Hide sensitive details before you send an image.

03

Compare and keep history

Reopen recent captures and compare versions side by side, overlaid or as a diff.

04

Protect with a password

Encrypt an image, file or note with AES-256-GCM and carry it inside a PNG with noise or a public cover picture. Unlock it in your browser with the password.

Help with screenshots and protected files

What happens to the original image?

Protection creates a separate encrypted file. It does not delete or lock the original image or its copy in extension history.

Can I recover a forgotten password?

We cannot reset the password or decrypt the file for you. If the sender still has the original image, they can create a new protected copy.

Can a recipient keep the unlocked image?

Yes. A recipient who knows the password can view, download or copy the unlocked image. Password protection is not a restriction on what they do afterward.

Help