Open your Obsidian vault
in a browser.

It is a core plugin in Obsidian that opens external links inside Obsidian on desktop. It shows websites in Obsidian, not your vault in a browser. To open the vault itself in a browser, make a Files board in Context Board.

Opening and reading a note writes nothing. In a folder you chose as read only, notes can't be changed at all. In a read and write folder, ticking a checkbox changes that one character, and typing changes only what you typed. The version before is kept on your computer for 30 days.

Links by a note's name, its path or one of its aliases open the note, and ![[embeds]] show pictures, PDFs and other notes. Callouts, ==highlights==, #tags and the properties at the top of a note are drawn too. A link to a note that doesn't exist yet offers to make it in a read and write folder. It doesn't run Obsidian plugins, and the links view shows one note's neighbours, not the whole vault.

Yes, in the phone's browser, with no app. The notes are still read from your computer, so it needs to be on.

The board keeps no copy of your notes. The runner on your computer sends a note to your browser tab when you open it, and the board stores none of it. With the computer off, the board says so. A Files board is never shared by link, because the notes live on your computer.

Yes. In Import, drop the vault's folder or a .zip of it, and it becomes a doc board: folders as pages, wiki links as page links, pictures that notes show kept, and properties as one line at the top of a page. PDFs and pictures no note shows are left out, and the dialog lists what it skipped. Your vault isn't touched, a doc board can be shared by link to read, and your agent can find a note in it with search_boards.

Context Board is free for 3 days, then $12 a month, with every widget included. Files boards, doc boards and every other board type are in the same plan.