Obsidianverse

Cosmos

The theme that makes Obsidian and the whole suite feel like one app.

InstallGitHub ↗Theme · v1.3.5 · Works on mobile
Obsidian with the Cosmos theme: the folder sidebar on the left and a person note with its properties and a link card.

What you get

  • Six layouts, from clean to full glass
  • Six palettes, dark and light, for any layout
  • Optional phone edition, off by default
  • Makes every plugin here look like one app

Install

Not in the Community Themes store yet. Pick one:

Ask a coding agent. The easiest way. Paste this into Claude Code or Codex:

Install the Obsidian theme from https://github.com/mariomile/obsidian-cosmos-theme into my vault (.obsidian/themes/Cosmos).

Or use BRAT. Install BRAT, choose “Add beta theme”, paste:

mariomile/obsidian-cosmos-theme
Install by hand

Download theme.css and manifest.json from the latest release, put them in .obsidian/themes/Cosmos, then enable it under Community themes.