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Developer Tools · head to head

ESLint vs Puppeteer

ESLint logo

ESLint

Developer Tools

Find and fix problems in JavaScript code

From
Free
Rated
-
Full reviewWebsite
Puppeteer logo

Puppeteer

Testing

Node.js library for controlling Chrome and Firefox

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: ESLint slow performance on large codebases compared to newer tools like Oxlint and Biome; Puppeteer chrome and Firefox only, with no Safari or WebKit story

Where they differ

Only the attributes on which ESLint and Puppeteer actually diverge.

Attributes where ESLint and Puppeteer differ
AttributeESLintPuppeteer
Pricing modelUnknownOpen source, no licence fee
PlatformsBrowser-based JavaScript, Node.js, Any JavaScript environmentLinux, macOS, Windows
CategoryDeveloper ToolsTesting
Founded2019Unknown

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 ESLint

Nothing recorded that Puppeteer does not also cover.

Only in Puppeteer

  • DevTools Protocol
  • Headless by default
  • PDF and screenshots
  • Network interception

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 Puppeteer
  • Automatically fixing issues with syntax-aware rewritesnot Puppeteer
  • Enforcing a consistent code style across a teamnot Puppeteer
  • Running as a CI step to block non-conforming codenot Puppeteer
  • Writing custom rules for project-specific conventionsnot Puppeteer

Puppeteer

  • Generating PDFs or screenshots of rendered pages on a servernot ESLint
  • Scraping sites that require JavaScript executionnot ESLint
  • Automating browser tasks where a full test framework is unnecessarynot 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

Puppeteer

  • Chrome and Firefox only, with no Safari or WebKit story
  • Not a test framework: assertions, retries and reporting need Jest or similar bolted on
  • Bundles a Chromium download, which makes installs large and awkward in constrained CI images

Pricing, plan by plan

ESLint

Free

No published plan breakdown. See the ESLint review.

Puppeteer

Free
  • PuppeteerFree
    • Full functionality
    • Unlimited tests
    • Community support

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 Puppeteer if

  • You need devtools protocol.
  • You want to start without paying.
  • You work on Linux, macOS, Windows.
  • You also want headless by default.
Puppeteer review

Questions people ask

Is ESLint or Puppeteer better?
Neither clearly leads. ESLint starts at Free and Puppeteer at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, ESLint or Puppeteer?
ESLint starts at Free and Puppeteer at Free.
Does ESLint or Puppeteer run on more platforms?
ESLint runs on Browser-based JavaScript, Node.js, Any JavaScript environment. Puppeteer runs on Linux, macOS, Windows.
Can I use ESLint for free?
Both have a free tier, so you can try either at no cost before committing.
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 Puppeteer is typically brought in for.
What can ESLint do that Puppeteer cannot?
Puppeteer covers DevTools Protocol, Headless by default, PDF and screenshots, Network interception.

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
Puppeteer: Is Puppeteer free?

Yes, open source from the Chrome team.

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
Puppeteer: Puppeteer or Playwright?

Playwright came from the same original team, adds WebKit and Firefox support, automatic waiting and a test runner. Puppeteer stays a focused Chrome automation library, which is simpler if automation rather than testing is the goal.

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
Puppeteer: Can Puppeteer generate PDFs?

Yes, and it is one of the most common uses — rendering a page and printing it to PDF server-side.

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