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Documentation · head to head

Bump.sh vs Starlight

Bump.sh logo

Bump.sh

Documentation

Hosted API documentation that diffs each new spec against the last and publishes a human readable changelog

From
On request
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

  • Only Starlight has a free tier, so it costs nothing to try first.
  • Each has a real cost: Bump.sh the service is hosted only, so organisations that cannot send their API specification to a third party are excluded regardless of how well the diff works.; 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: Bump.sh covers Structural spec diff, Starlight covers File based routing.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Bump.sh and Starlight actually diverge.

Attributes where Bump.sh and Starlight differ
AttributeBump.shStarlight
Starting priceOn requestFree
Pricing modelquoteOpen source, no licence fee
Free tierNoYes
PlatformsWebWeb, macOS, Windows, Linux

Identical on both: 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 Bump.sh

  • Structural spec diff
  • Published changelog
  • AsyncAPI support
  • CI integration
  • Multi API hubs
  • Custom domain and branding
  • Access control

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.

Bump.sh

  • A public API with paying consumers where an accidental breaking change carries contractual consequencesnot Starlight
  • An event driven platform that needs AsyncAPI documentation rather than REST only toolingnot Starlight
  • A pull request gate that must fail when a spec change breaks an existing clientnot Starlight
  • A partner portal grouping several internal APIs behind access control on a custom domainnot Starlight

Starlight

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

Where each one falls short

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

Bump.sh

  • The service is hosted only, so organisations that cannot send their API specification to a third party are excluded regardless of how well the diff works.
  • Long form guides and tutorials are secondary to the reference, so most teams still run and pay for a second documentation site.
  • Diff quality depends on spec quality, and a specification generated loosely from code annotations produces noisy change reports that teams learn to ignore.
  • It is a small European vendor in a category where larger competitors bundle documentation with gateways and portals, so procurement at a large enterprise can take longer than the evaluation did.
  • Because pricing is not something a buyer can confirm without contact, budgeting for it early in a comparison is guesswork.

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

Bump.sh

On request
  • Bump.sh$undefined/year
    • Hosted API documentation portal
    • Automatic breaking change detection
    • Consumer facing changelog

Starlight

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

Which should you pick?

Choose Bump.sh if

  • You need structural spec diff.
  • You also want published changelog.
Bump.sh 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 Bump.sh or Starlight better?
Neither clearly leads. Bump.sh starts at On request and Starlight at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Bump.sh or Starlight?
Starlight has a free tier; the other does not. Paid plans start at On request for Bump.sh and Free for Starlight.
Does Bump.sh or Starlight run on more platforms?
Bump.sh runs on Web. Starlight runs on Web, macOS, Windows, Linux.
Can I use Starlight for free?
Yes. Starlight has a free tier, so you can try it without paying. Bump.sh starts at On request.
What is Bump.sh best used for?
Bump.sh is most often used for a public api with paying consumers where an accidental breaking change carries contractual consequences, an event driven platform that needs asyncapi documentation rather than rest only tooling, a pull request gate that must fail when a spec change breaks an existing client, a partner portal grouping several internal apis behind access control on a custom domain. Of those, a public api with paying consumers where an accidental breaking change carries contractual consequences and an event driven platform that needs asyncapi documentation rather than rest only tooling are not what Starlight is typically brought in for.
What can Bump.sh do that Starlight cannot?
Bump.sh covers Structural spec diff, Published changelog, AsyncAPI support, CI integration. Starlight covers File based routing, Pagefind search, Internationalisation, Component overrides.

Answered from the vendors’ own pages

Bump.sh: What does it do that a normal API docs renderer does not?

It compares each published spec with the previous one and tells you, and your consumers, exactly what changed and whether it breaks clients.

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.

Bump.sh: Does it support event driven APIs?

Yes. AsyncAPI is a first class input alongside OpenAPI, which is unusual in this category.

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.

Bump.sh: Can I self host it?

No. It is a hosted service only.

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.

Bump.sh: Can it block a merge?

Yes. The command line tool and GitHub action return a failure on a detected breaking change.

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.

Bump.sh: Is it a full documentation site?

It is primarily reference and changelog. Plan on a separate generator for guides and conceptual content.

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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