Stylecow
Parse, manipulate and convert modern CSS for cross-browser compatibility.
- Status
- UnmaintainedNo commits in 2370 days.
- Last checked
- Aging · Sep 4, 2026
- License
- Open source
- Pricing
- Free tier · from $0
What it is
Stylecow is a tool that parses, manipulates, and converts modern CSS to ensure it works across all browsers. It's extensible with plugins, making it versatile for various development needs.
Stylecow stands out as an open-source, extensible tool specifically designed to handle modern CSS conversion and manipulation for cross-browser compatibility.
When it fits — and when it doesn’t
A good fit for
Developers working on projects that require cross-browser compatible CSS
Teams needing automated conversion and manipulation of CSS for consistency
Look elsewhere if
Projects where manual handling of browser compatibility is preferred over automation
Scenarios requiring real-time CSS manipulation in a cloud environment
Known weaknesses
Each one links to the public issue, changelog or docs page it came from, where we have one.
- 01
Small community and limited support
The project has a relatively small number of contributors and the issue tracker shows low activity, indicating limited community support and slower resolution of bugs or feature requests.
- 02
Performance issues with large CSS files
Stylecow can be slow when processing very large CSS files, which may cause delays in development workflows for projects with extensive styling requirements.
- 03
Plugin ecosystem is not well-developed
The plugin system is extensible but there are few plugins available, limiting the tool's versatility and integration capabilities within larger development ecosystems.
What it does well
Converts modern CSS for cross-browser compatibility
Extensible with plugins
Parses and manipulates CSS
Pricing
- Free tier
- YesOpen source — free to use
- Paid from
- $0
- Model
- Flat rate
- Enterprise plan
- No
Pricing not independently confirmed — check the vendor’s page.
Performance benchmarks
How Fast Is It?
Set up Stylecow
Setup steps, common gotchas and what to check after 30 days.