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ERB Lint review

Free#17 of 21 in Ruby Static Analysis Tools

A free, self-hosted command-line linter focused on ERB and HTML templates.

6.9/10Editor score
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ERB Lint6.9 Visit ERB Lint

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

ERB Lint is an open-source Ruby command-line tool for checking ERB and HTML templates. It is aimed at teams that want template-specific linting alongside their Ruby development workflow, including checks on Ruby statements embedded in ERB. Its built-in linters cover syntax, formatting, HTML conventions, accessibility-related attributes and script usage, giving template code its own review layer rather than treating it as ordinary Ruby files.

The feature depth is concentrated in templates: ERB Lint can run RuboCop rules against embedded Ruby, and its ErbSafety linter checks potentially unsafe Ruby interpolation in JavaScript contexts. Teams can enable, disable and configure individual linters, set file globs and exclusions, and use inline comments to disable rules where needed. Custom linter support provides a route for projects to add checks suited to their conventions. Autocorrection is available for supported rules, so the tool can apply some fixes rather than only report findings.

ERB Lint is free and self-hosted as a locally installed gem, with documentation as its stated support channel; the published plans do not describe a hosted service. That makes it a focused option for projects with ERB templates that are comfortable running command-line tools and maintaining configuration. It is less suitable as a stand-alone answer for teams seeking analysis across an entire Ruby application or a hosted service. Teams primarily concerned with template consistency and embedded-Ruby checks should consider it; those needing broader application-wide analysis should choose a tool with that scope.

ERB Lint pros and cons

  • Where it wins
    • Checks template syntax, formatting, HTML conventions and accessibility-related attributes.
    • Runs RuboCop rules on Ruby statements and checks JavaScript interpolation safety.
    • Supports custom linters, per-rule configuration and autocorrection for supported rules.
  • Where it doesn't
    • Focuses on ERB and HTML templates rather than whole Ruby applications.
    • Requires a local gem installation and command-line workflow.
    • Support is documented through docs; no hosted-service option is described.

ERB Lint fact sheet, pricing and score →

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