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Developer Tools · head to head

ESLint vs Redocly

ESLint logo

ESLint

Developer Tools

Find and fix problems in JavaScript code

From
Free
Rated
-
Full reviewWebsite
Redocly logo

Redocly

Documentation

API documentation and OpenAPI governance platform

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only ESLint has a free tier, so it costs nothing to try first.
  • Each has a real cost: ESLint slow performance on large codebases compared to newer tools like Oxlint and Biome; Redocly only as useful as your commitment to OpenAPI; teams without a maintained spec get little from it

Where they differ

Only the attributes on which ESLint and Redocly actually diverge.

Attributes where ESLint and Redocly differ
AttributeESLintRedocly
Starting priceFreeOn request
Pricing modelUnknownFree open-source CLI and Redoc renderer; paid plans for the portal, published on the vendor site
Free tierYesNo
PlatformsBrowser-based JavaScript, Node.js, Any JavaScript environmentWeb, Cloud, Self-hosted
CategoryDeveloper ToolsDocumentation
Founded2019Unknown

Identical on both: 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 ESLint

Nothing recorded that Redocly does not also cover.

Only in Redocly

  • OpenAPI reference docs
  • Spec linting
  • Developer portal
  • Versioning
  • Try it
  • Git workflow

What people use each for

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

ESLint

  • Statically analysing JavaScript and JSX to find problems before runtimenot Redocly
  • Automatically fixing issues with syntax-aware rewritesnot Redocly
  • Enforcing a consistent code style across a teamnot Redocly
  • Running as a CI step to block non-conforming codenot Redocly
  • Writing custom rules for project-specific conventionsnot Redocly

Redocly

  • API teams whose reference docs are thin because the spec is thinnot ESLint
  • Organisations enforcing API style rules across many teamsnot ESLint
  • Developer portals combining guides with generated referencenot ESLint

Where each one falls short

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

ESLint

  • Slow performance on large codebases compared to newer tools like Oxlint and Biome
  • Complexity in configuration from scratch, particularly for TypeScript support
  • Limited built-in TypeScript support, requiring separate parsers and coordination with new TypeScript features

Redocly

  • Only as useful as your commitment to OpenAPI; teams without a maintained spec get little from it
  • The portal and governance features are paid, while the open-source renderer covers only reference rendering
  • Linting rules are another thing to configure and argue about before value appears
  • Narrower than a general documentation platform, by design

Pricing, plan by plan

ESLint

Free

No published plan breakdown. See the ESLint review.

Redocly

On request

No published plan breakdown. See the Redocly review.

Which should you pick?

Choose ESLint if

  • You want to start without paying.
  • You work on Browser-based JavaScript, Node.js, Any JavaScript environment.
ESLint review

Choose Redocly if

  • You need openapi reference docs.
  • You work on Web, Cloud, Self-hosted.
  • You also want spec linting.
Redocly review

Questions people ask

Is ESLint or Redocly better?
Neither clearly leads. ESLint starts at Free and Redocly at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, ESLint or Redocly?
ESLint has a free tier; the other does not. Paid plans start at Free for ESLint and On request for Redocly.
Does ESLint or Redocly run on more platforms?
ESLint runs on Browser-based JavaScript, Node.js, Any JavaScript environment. Redocly runs on Web, Cloud, Self-hosted.
Can I use ESLint for free?
Yes. ESLint has a free tier, so you can try it without paying. Redocly starts at On request.
What is ESLint best used for?
ESLint is most often used for statically analysing javascript and jsx to find problems before runtime, automatically fixing issues with syntax-aware rewrites, enforcing a consistent code style across a team, running as a ci step to block non-conforming code. Of those, statically analysing javascript and jsx to find problems before runtime and automatically fixing issues with syntax-aware rewrites are not what Redocly is typically brought in for.
What can ESLint do that Redocly cannot?
Redocly covers OpenAPI reference docs, Spec linting, Developer portal, Versioning.

Answered from the vendors’ own pages

ESLint: Does ESLint automatically fix code issues?

Many problems ESLint finds can be automatically fixed via the --fix flag. ESLint fixes are syntax-aware so you won't experience errors introduced by traditional find-and-replace algorithms.

Source
Redocly: Is Redocly free?

The Redoc renderer and CLI are open source and free. The developer portal and governance features are paid, with pricing published on the vendor site.

ESLint: How much does ESLint cost?

ESLint is completely free and open-source software maintained by the OpenJS Foundation. The project accepts voluntary donations from sponsors.

Source
Redocly: What does the linter do?

It enforces rules on the OpenAPI spec itself in CI — missing descriptions, naming, examples — so a poor spec fails the build rather than becoming poor documentation.

ESLint: Can I write custom ESLint rules?

Yes. You can develop custom rules that work alongside built-in functionality through ESLint's plugin system, allowing complete customization for your project needs.

Source
Redocly: Do I need OpenAPI to use it?

Effectively yes. Without a maintained specification there is little for it to work with.

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