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Research · head to head

Obsidian vs Starlight

Obsidian logo

Obsidian

Research

A powerful knowledge base on top of a local folder of plain text Markdown files

From
Free
Rated
-
Full reviewWebsite
Starlight logo

Starlight

Documentation

Documentation site framework built on Astro that ships no JavaScript to the reader by default

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Obsidian sync is a paid add-on at $4 per month billed annually rather than part of the app; Starlight there is no editing interface, so every correction requires a git client, a Node install and a CI run, which puts documentation changes out of reach for anyone who does not already work in a repository.
  • They diverge on capability: Obsidian covers Bidirectional linking, Starlight covers File based routing.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Obsidian and Starlight actually diverge.

Attributes where Obsidian and Starlight differ
AttributeObsidianStarlight
Pricing modelUnknownOpen source, no licence fee
PlatformsWeb, Windows, macOS, Linux, iOS, AndroidWeb, macOS, Windows, Linux
CategoryResearchDocumentation
Founded2020Unknown

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Obsidian

  • Bidirectional linking
  • Graph view visualization
  • Markdown support
  • Local file storage
  • Plugin ecosystem
  • Custom CSS themes
  • Templates
  • Search and tags

Only in Starlight

  • File based routing
  • Pagefind search
  • Internationalisation
  • Component overrides
  • Zero client JavaScript
  • Expressive Code blocks
  • Auto generated sidebar

What people use each for

The jobs each tool is most often brought in to do.

Obsidian

  • Local-first markdown note taking with no account requirednot Starlight
  • Linking notes into a personal knowledge graphnot Starlight
  • Syncing a vault across devices with end-to-end encryption on the paid add-onnot Starlight
  • Publishing a public site from a vaultnot Starlight
  • Extending the editor with community pluginsnot Starlight

Starlight

  • A developer tool whose docs live in the same repository as the code and are reviewed in the same pull requestnot Obsidian
  • A team that already runs Astro for its marketing site and wants one build pipeline for bothnot Obsidian
  • Documentation that must be served from a CDN or an air gapped static host with no search backendnot Obsidian
  • A multilingual open source project that needs per locale content trees and untranslated page fallbacknot Obsidian

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Obsidian

  • Sync is a paid add-on at $4 per month billed annually rather than part of the app
  • Publishing to the web is a further $8 per month per site
  • Commercial use asks for a $50 per user per year licence, though the vendor states it is not required
  • Collaboration is limited compared with a hosted notes tool, since the vault is local files first

Starlight

  • There is no editing interface, so every correction requires a git client, a Node install and a CI run, which puts documentation changes out of reach for anyone who does not already work in a repository.
  • Starlight versions track Astro versions, so an Astro major release becomes a documentation site migration on someone else timeline rather than yours.
  • Pagefind builds the whole search index at compile time, so build duration and index size grow with page count and large documentation sets pay for it on every deploy.
  • There is no analytics, no feedback widget and no page level rating built in, so measuring which pages fail readers means wiring a third party script yourself.
  • Component overrides are limited to the slots the theme exposes, and anything outside those slots means forking the theme and inheriting the merge burden on every upgrade.

Pricing, plan by plan

Obsidian

Free
  • Obsidian Sync$4/month
    • Sync notes across devices
  • Obsidian Publish$8/month
    • Turn notes into a website

Starlight

Free
  • Open sourceFree
    • MIT licence
    • All features included
    • Self hosted on any static host

Which should you pick?

Choose Obsidian if

  • You need bidirectional linking.
  • You want to start without paying.
  • You work on Web, Windows, macOS, Linux, iOS, Android.
  • You also want graph view visualization.
Obsidian review

Choose Starlight if

  • You need file based routing.
  • You want to start without paying.
  • You work on Web, macOS, Windows, Linux.
  • You also want pagefind search.
Starlight review

Questions people ask

Is Obsidian or Starlight better?
Neither clearly leads. Obsidian starts at Free and Starlight at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Obsidian or Starlight?
Obsidian starts at Free and Starlight at Free.
Does Obsidian or Starlight run on more platforms?
Obsidian runs on Web, Windows, macOS, Linux, iOS, Android. Starlight runs on Web, macOS, Windows, Linux.
Can I use Obsidian for free?
Both have a free tier, so you can try either at no cost before committing.
What is Obsidian best used for?
Obsidian is most often used for local-first markdown note taking with no account required, linking notes into a personal knowledge graph, syncing a vault across devices with end-to-end encryption on the paid add-on, publishing a public site from a vault. Of those, local-first markdown note taking with no account required and linking notes into a personal knowledge graph are not what Starlight is typically brought in for.
What can Obsidian do that Starlight cannot?
Obsidian covers Bidirectional linking, Graph view visualization, Markdown support, Local file storage. Starlight covers File based routing, Pagefind search, Internationalisation, Component overrides.

Answered from the vendors’ own pages

Obsidian: Is Obsidian free?

Yes. The core Obsidian application is 100% free for personal and commercial use with no limitations. You can use unlimited vaults and every core feature without payment.

Source
Starlight: Can a non technical writer publish a page without help?

No. There is no content management interface. Every change is a commit, a pull request and a build.

Obsidian: What file format does Obsidian use?

Obsidian stores every note as a plain Markdown file. Because it uses standard Markdown instead of a proprietary format, your notes remain portable and can be edited with many other Markdown editors.

Source
Starlight: Do I need to know Astro to use it?

Not for basic use. Markdown files and a config file are enough until you want custom components, at which point Astro knowledge becomes mandatory.

Obsidian: Can I collaborate with others in Obsidian?

The core application does not include built-in team collaboration features. However, Obsidian offers optional add-ons and can be used with version control systems or cloud storage for collaboration.

Source
Starlight: Is search included or do I pay for it?

Included and free. Pagefind builds a static index at compile time. Algolia DocSearch is optional if you want hosted search instead.

Starlight: What happens when Astro releases a major version?

Starlight follows it, and your site needs a migration. Read the upgrade guide before pinning a version for a long lived project.

Starlight: Can I self host with no external services?

Yes. The output is static HTML, CSS and a search index. Nothing calls out at runtime unless you add it.

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