Can I Use (caniuse.com) is a widely-used compatibility tables website that shows which web platform features are supported in which browsers. Before using a new CSS property or JavaScript API in production, smart developers check Can I Use to understand their audience's browser landscape.
How It Works
Search for any web feature — CSS Grid, WebP images, Intersection Observer, CSS Container Queries — and see color-coded tables showing support across Chrome, Firefox, Safari, Edge, Opera, and mobile browsers. Global usage percentages help you weigh whether a feature is safe to use.
Key Features
- Feature search — Instant lookup for any web technology
- Usage statistics — Global and regional browser share data
- Custom filters — Filter by minimum browser versions you support
- Embed badges — Add support badges to your documentation
- News feed — Track newly supported features
Real-World Decision Making
Suppose you want to use CSS subgrid. Can I Use shows it's supported in Firefox and Safari but only recently in Chrome. You can decide to use it with a fallback layout, or wait until support reaches your target threshold. Data-driven decisions prevent broken experiences.
Integration with Build Tools
Can I Use data powers tools like Autoprefixer (adds vendor prefixes automatically), Browserslist (defines target browsers for your project), and eslint-plugin-compat (warns about unsupported APIs in your code). The site is the source of truth for the entire front-end tooling ecosystem.
Pros
- Fast, simple interface
- Comprehensive feature coverage
- Free and no account required
- Powers major build tools
- Regularly updated
Cons
- Doesn't cover experimental APIs in detail
- Usage stats are estimates
- No polyfill recommendations built-in
Final Verdict
Can I Use belongs in every front-end developer's workflow. A thirty-second check before adopting new features can save hours of debugging browser-specific issues in production.