Moving in from Obsidian

Pellet grew out of an Obsidian plugin, and it reads the same files. Point it at your existing vault and it opens.

Just open it

Choose your vault and select your Obsidian vault folder. Nothing is converted, moved or rewritten.

What works straight away

Your notes. Markdown is markdown.
[[Wikilinks]] and backlinks, including ![[embeds]] and heading embeds.
Tags, including nested ones like #work/clients.
Your frontmatter. Pellet reads the keys it knows and leaves every other key exactly as you wrote it — including ones added by plugins it’s never heard of.
Canvases. Pellet uses JSON Canvas, the same open format, so .canvas files open in both.
Excalidraw drawings. Real .excalidraw files, editable in either app.
Daily notes and templates, once you point Settings at the right folders.

What doesn’t come across

Plugins. Pellet isn’t Obsidian and has no plugin system. Much of what people install plugins for is built in — tasks, kanban, calendar, canvas, PDF highlights — but if you depend on a specific community plugin, it won’t be here.
Obsidian-specific syntax that plugins introduced. It stays in your files as plain text; it just won’t render specially.
Themes and CSS snippets. Pellet has its own appearance settings instead.
Obsidian Sync and Publish. Pellet has its own sync, which you host.

Both at once

Nothing stops you. The files are just files, and neither app locks them. Some people keep Obsidian for its plugin ecosystem and use Pellet for the task and calendar side.

The one thing to avoid is having both apps writing to the same file at the same moment — close a note in one before editing it in the other.