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Developer Tools · head to head

ESLint vs Google Authenticator

ESLint logo

ESLint

Developer Tools

Find and fix problems in JavaScript code

From
Free
Free plan
Yes
Full reviewWebsite
Google Authenticator logo

Google Authenticator

Cybersecurity

Free TOTP two-factor authentication app that gained optional cloud sync in 2023

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Each has a real cost: ESLint slow performance on large codebases compared to newer tools like Oxlint and Biome; Google Authenticator enabling cloud sync moves the security boundary for your 2FA codes to your Google account, so a compromised Google account can expose the same codes syncing was meant to protect.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which ESLint and Google Authenticator actually diverge.

Attributes where ESLint and Google Authenticator differ
AttributeESLintGoogle Authenticator
Pricing modelUnknownFree, no in-app purchases
PlatformsBrowser-based JavaScript, Node.js, Any JavaScript environmentiOS, Android
CategoryDeveloper ToolsCybersecurity
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 Google Authenticator does not also cover.

Only in Google Authenticator

  • TOTP code generation
  • QR code setup
  • Optional Google account sync
  • Offline generation
  • Manual entry

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

Google Authenticator

  • Someone setting up two-factor authentication on a website that asks for a TOTP appnot ESLint
  • A user who wants codes to survive a lost or replaced phone via account syncnot ESLint
  • Someone who prefers a simple, free, single-purpose authenticator over a password manager's built-in onenot ESLint
  • A person migrating between phones who wants existing 2FA codes to transfer automaticallynot 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

Google Authenticator

  • Enabling cloud sync moves the security boundary for your 2FA codes to your Google account, so a compromised Google account can expose the same codes syncing was meant to protect.
  • It has no built-in backup export in a portable format, so moving away from Google Authenticator to another app usually means resetting 2FA on every individual service.
  • It lacks organisational features such as folders, search or notes that some competing authenticator apps offer for people managing many accounts.
  • There is no desktop app, so codes must be read off a phone screen when logging in from a computer.
  • If sync is off and the phone is lost without a separate backup, all codes are unrecoverable and every linked account needs its 2FA reset through account recovery.

Pricing, plan by plan

ESLint

Free

No published plan breakdown. See the ESLint review.

Google Authenticator

Free
  • FreeFree
    • Unlimited accounts and codes
    • Optional Google account cloud sync
    • No ads

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 Google Authenticator if

  • You need totp code generation.
  • You want to start without paying.
  • You work on iOS, Android.
  • You also want qr code setup.
Google Authenticator review

Questions people ask

Is ESLint or Google Authenticator better?
Neither clearly leads. ESLint starts at Free and Google Authenticator at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, ESLint or Google Authenticator?
ESLint starts at Free and Google Authenticator at Free.
Does ESLint or Google Authenticator run on more platforms?
ESLint runs on Browser-based JavaScript, Node.js, Any JavaScript environment. Google Authenticator runs on iOS, Android.
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 Google Authenticator is typically brought in for.
What can ESLint do that Google Authenticator cannot?
Google Authenticator covers TOTP code generation, QR code setup, Optional Google account sync, Offline generation.

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
Google Authenticator: Does Google Authenticator cost anything?

No, it is free with no subscription or in-app purchases.

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
Google Authenticator: Is cloud sync safe?

Google documents it as protected by your Google account security. Whether that is an acceptable trade-off versus device-only storage is debated; you can turn sync off if you prefer local-only codes.

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
Google Authenticator: Can I export my codes to another app?

There is no official bulk export; moving to a different authenticator typically requires re-adding each account from its setup page.

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