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Snap has not been released. There is no installer on any platform yet. These pages describe what exists in the current build — see the roadmap for what is still missing.
Snap is for people who document software: take a screenshot, keep it findable, mark it up, and hand it to Compose.

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The idea it is built around

The library is a folder.
  • A collection is a directory.
  • A capture is an ordinary image file.
  • Annotations live beside the image, in a small .snap.json file with the same name.
There is no database, no bundle format and no import step. You can open the whole library in a file manager, back it up with any tool you already use, and keep every file if you uninstall Snap. The image stays a plain image that any application can open. Annotations are burned into a copy only when a capture is exported, copied or sent to Compose — never into the original.

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The window

1

Title bar

Menus — File, Edit, View, Capture, Annotate, Help — plus New capture, Send to Compose, and your account chip.
2

Sidebar

Search, four filters (All captures, Screenshots, Recordings, Sent to Compose), and your collections as a tree. Ctrl B hides it.
3

Tab strip

A permanent Library tab plus a tab per open capture. Closing the last capture always lands you back somewhere real.
4

Content

Either the library grid or list, or an open capture.
5

Inspector

Details of the selected capture and the actions that apply to it. Ctrl Shift I hides it.
6

Status strip

Library totals, the last capture’s format and dimensions, and any message.
The sidebar, content and inspector are separated by draggable splitters, and their widths are remembered.

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Signing in is optional

Snap does not gate on sign-in. Capture, the library and viewing all work with nobody signed in — its capture shortcut has to fire from the system tray with no session, and the library is a folder of your own files. The only thing an account will buy is Send to Compose, and later Cloud backup of the library. Both are still to come.

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Where to go next

Capturing

The capture modes, the launcher, and what happens after a grab.

The library

Collections, filters, search, renaming, exporting.

Shortcuts

Global capture keys, and why one may refuse to register.

Roadmap

What is not built yet, stated plainly.

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Platforms

Windows is the target platform. Snap builds and runs on Linux, and that build is maintained, but it is not distributed. The reason is Wayland: a Wayland client is not permitted to read the screen. Snap has to ask the desktop portal instead, which means the compositor draws the selection interface, Snap cannot decide about the pointer, and region, window and full-screen capture all collapse into one interactive prompt. That is a different product rather than a port. On X11, Snap’s own capture backend works fully.