Slim-Lint review
Configurable command-line linting for Slim templates, with local and CI workflows.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Slim-Lint is an open-source Ruby command-line linter for developers maintaining Slim-based applications. It checks Slim template files against style and consistency rules, reports violations, and can run locally or in continuous-integration workflows. That scope makes it a fit for teams that want template-specific checks in their development process, including teams linting Slim templates in CI. It is not a general-purpose Ruby static analysis tool, so teams looking for broader code analysis should consider a different kind of product.
Configuration is handled through a project file, where teams can enable, disable, and tune individual linters. The command-line tool can scan files or directories and provides multiple output and reporting options. Together, those capabilities make the tool adaptable to different Slim projects and allow its checks to be included in an existing CI workflow. Slim-Lint is distributed as a Ruby gem and is self-hosted, rather than offered as a hosted service. Its focused feature set centers on template style and consistency; it does not provide security analysis, type checking, or autofix.
Slim-Lint is open source and has a free plan, so its published pricing model does not require a paid tier for the stated linting functionality. Support channels are documentation and community. Teams comfortable running a Ruby command-line tool and maintaining project configuration can use it to add repeatable Slim template checks without adopting a hosted platform. It is a less suitable choice for buyers who need analysis beyond Slim templates, automatic correction of findings, or a hosted option. Choose it for targeted Slim linting in local and CI workflows; look elsewhere when the requirement is broader Ruby analysis or those missing capabilities.
Slim-Lint pros and cons
- Where it wins
- Configurable style and consistency rules can be tuned per project.
- Scans Slim files and directories from the command line.
- Offers multiple report formats and supports CI workflows.
- Where it doesn't
- Focused on Slim templates rather than general Ruby analysis.
- No security analysis, type checking, or autofix.
- Self-hosted only, with docs and community support channels.
Slim-Lint fact sheet, pricing and score →
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