Documentation · head to head
MkDocs vs Sphinx
MkDocs
Documentation
Static site generator for project documentation in Markdown
- From
- Free
- Rated
- -
Sphinx
Documentation
Documentation generator built for large technical projects
- From
- Free
- Rated
- -
The short version
- Each has a real cost: MkDocs no built-in versioning, which Docusaurus provides and documentation teams eventually need; Sphinx reStructuredText is harder to write than Markdown and puts off contributors, though MyST now allows Markdown
- They diverge on capability: MkDocs covers Plain Markdown, Sphinx covers Cross-references.
Where they differ
Only the attributes on which MkDocs and Sphinx actually diverge.
Identical on both: starting price (Free), pricing model (Open source, no licence fee), free tier (Yes), user rating (Not yet rated), category (Documentation).
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 MkDocs
- Plain Markdown
- Single YAML config
- Material theme
- Live preview
Only in Sphinx
- Cross-references
- API autodoc
- Multi-format output
- Extension ecosystem
What people use each for
The jobs each tool is most often brought in to do.
MkDocs
- Project documentation for teams that would rather not run a JavaScript toolchainnot Sphinx
- Python projects keeping docs beside the codenot Sphinx
- Documentation that must build fast in CI on every commitnot Sphinx
Sphinx
- Large technical documentation needing reliable cross-referencesnot MkDocs
- Python projects generating API docs from docstringsnot MkDocs
- Documentation that must ship as PDF as well as HTMLnot MkDocs
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
MkDocs
- No built-in versioning, which Docusaurus provides and documentation teams eventually need
- Extending past the theme means writing Python plugins
- Markdown only, so embedding interactive components is not the model
Sphinx
- reStructuredText is harder to write than Markdown and puts off contributors, though MyST now allows Markdown
- Configuration is complex and the default output is dated-looking without theme work
- Build times on large documentation sets are slow
- Heavier than the problem for a small project that only needs a few pages
Pricing, plan by plan
MkDocs
Free- MkDocsFree
- Full functionality
- Commercial use permitted
- Community support
Sphinx
Free- SphinxFree
- Full functionality
- Commercial use permitted
- Community support
Which should you pick?
Choose MkDocs if
- You need plain markdown.
- You want to start without paying.
- You work on Web, Linux, macOS, Windows.
- You also want single yaml config.
Choose Sphinx if
- You need cross-references.
- You want to start without paying.
- You work on Linux, macOS, Windows.
- You also want api autodoc.
Questions people ask
- Is MkDocs or Sphinx better?
- Neither clearly leads. MkDocs starts at Free and Sphinx at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, MkDocs or Sphinx?
- MkDocs starts at Free and Sphinx at Free.
- Does MkDocs or Sphinx run on more platforms?
- MkDocs runs on Web, Linux, macOS, Windows. Sphinx runs on Linux, macOS, Windows.
- Can I use MkDocs for free?
- Both have a free tier, so you can try either at no cost before committing.
- What is MkDocs best used for?
- MkDocs is most often used for project documentation for teams that would rather not run a javascript toolchain, python projects keeping docs beside the code, documentation that must build fast in ci on every commit. Of those, project documentation for teams that would rather not run a javascript toolchain and python projects keeping docs beside the code are not what Sphinx is typically brought in for.
- What can MkDocs do that Sphinx cannot?
- MkDocs covers Plain Markdown, Single YAML config, Material theme, Live preview. Sphinx covers Cross-references, API autodoc, Multi-format output, Extension ecosystem.
Answered from the vendors’ own pages
MkDocs: Is MkDocs free?
Yes, open source under the BSD licence. The Material theme has a free version and a paid Insiders edition.
Sphinx: Is Sphinx free?
Yes, open source under the BSD licence.
MkDocs: MkDocs or Docusaurus?
MkDocs is simpler and faster to adopt, especially for Python teams. Docusaurus offers versioning, internationalisation and React components, which matter once documentation grows.
Sphinx: Do I have to write reStructuredText?
Not any more. The MyST extension allows Markdown, though reStructuredText remains the native format and most examples use it.
MkDocs: Does MkDocs support versioned docs?
Not natively. Plugins such as mike add it, where Docusaurus includes versioning in core.
Sphinx: Why do large projects choose Sphinx?
Automatic cross-referencing and API extraction from docstrings, which lighter generators do not provide.