Developer Tools · head to head
ESLint vs IDnow
IDnow
Cybersecurity
Identity verification and qualified electronic signature for regulated European markets
- From
- On request
- Free plan
- No
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; IDnow agent-led video identification costs several times an automated check and depends on agent availability, so peak-time queues push abandonment up at exactly the moment conversion matters.
- Prices and features above were last checked on 1 September 2026.
Where they differ
Only the attributes on which ESLint and IDnow actually diverge.
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 IDnow does not also cover.
Only in IDnow
- VideoIdent
- AutoIdent
- eSign
- eID and NFC
- Bank identification
- EU data processing
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 IDnow
- Automatically fixing issues with syntax-aware rewritesnot IDnow
- Enforcing a consistent code style across a teamnot IDnow
- Running as a CI step to block non-conforming codenot IDnow
- Writing custom rules for project-specific conventionsnot IDnow
IDnow
- A German bank opening regulated accounts where BaFin requires a recognised identification methodnot ESLint
- An insurer needing a qualified electronic signature that will survive challenge in a European courtnot ESLint
- A telecom operator meeting national SIM registration identity rules across several EU statesnot ESLint
- A lender wanting automated checks for low-risk applicants and video identification only for high-value casesnot 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
IDnow
- Agent-led video identification costs several times an automated check and depends on agent availability, so peak-time queues push abandonment up at exactly the moment conversion matters.
- Pricing is quoted with an annual volume commitment, so the accreditation advantage comes with a floor you pay whether or not you use it.
- The product is optimised for European regulatory regimes, so buyers verifying users in North America, Asia or Africa will find coverage and cost less competitive than global specialists.
- Qualified electronic signature is a separate licence from identity verification, which surprises buyers who assumed the accredited identity check made the signature capability included.
- Integration for the regulated flows is heavier than a simple SDK drop-in because the compliant journey, including consent and recording requirements, constrains the user experience you can build.
Pricing, plan by plan
ESLint
FreeNo published plan breakdown. See the ESLint review.
IDnow
On request- IDnow Platform$undefined/year
- Per-identification pricing that differs sharply between automated and agent-led methods
- Annual volume commitment typically required
- Qualified electronic signature licensed separately
Which should you pick?
Choose ESLint if
- You want to start without paying.
- You work on Browser-based JavaScript, Node.js, Any JavaScript environment.
Choose IDnow if
- You need videoident.
- You work on Web, iOS, Android, API.
- You also want autoident.
Questions people ask
- Is ESLint or IDnow better?
- Neither clearly leads. ESLint starts at Free and IDnow at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, ESLint or IDnow?
- ESLint has a free tier; the other does not. Paid plans start at Free for ESLint and On request for IDnow.
- Does ESLint or IDnow run on more platforms?
- ESLint runs on Browser-based JavaScript, Node.js, Any JavaScript environment. IDnow runs on Web, iOS, Android, API.
- Can I use ESLint for free?
- Yes. ESLint has a free tier, so you can try it without paying. IDnow 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 IDnow is typically brought in for.
- What can ESLint do that IDnow cannot?
- IDnow covers VideoIdent, AutoIdent, eSign, eID and NFC.
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.
SourceIDnow: Why choose it over a cheaper automated vendor?
Because in some European regimes the cheaper vendor is not legally permitted for the transaction. This is an eligibility question, not a quality one.
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.
SourceIDnow: Is the electronic signature included?
No. Qualified electronic signature under eIDAS is licensed separately from identity verification.
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.
SourceIDnow: Where is the data processed?
In European data centres, which is a requirement rather than a preference for many of its regulated customers.
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