Can I Use website, caniuse.com, browser compatibility tables, HTML5, CSS, JavaScript APIs, web platform features, usage data, browser support, frontend development, MDN Web Docs, and WHOIS domain data

Can I Use

Can I Use is a website that tracks browser support tables for modern web technologies, helping developers check whether HTML, CSS, JavaScript, and web platform features work across browsers.

Core purpose

Can I Use provides browser compatibility tables for web platform features, including HTML, CSS, JavaScript APIs, media formats, and browser-specific behavior.

Official domain

caniuse.com is the official website for searching feature support, comparing browsers, reviewing usage tables, and browsing web compatibility data.

Domain created

April 27, 2010

The Can I Use site icon used as the brand image for the website page.View official Can I Use site icon

What Can I Use is

Can I Use official site provides support tables for HTML, CSS, JavaScript APIs, and other modern web technologies. Developers use it to search a feature, compare browser support, review usage data, and decide whether a feature is safe to use for a target audience. The site is especially useful when browser support is uneven. Instead of guessing from release notes or testing every browser manually, a developer can check a compatibility table, read notes, compare versions, and combine that information with analytics or project requirements.

Browser support tables

Each feature page shows browser versions and support states using a compact grid. The tables can include full support, partial support, support behind flags, prefixed behavior, known issues, and explanatory notes. That makes the site practical for feature decisions during design, development, QA, and technical planning.

Usage data and audience fit

Can I Use includes global and regional usage data, and the site explains that usage data can be adjusted through settings. This helps teams think beyond a binary yes-or-no answer: a feature may be technically supported in many browsers but still unsuitable for a site whose visitors rely on older versions.

Feature index and comparisons

The site includes an index of features and a browser comparison area. Users can browse CSS, HTML, SVG, JavaScript API, media, security, and performance-related features, then compare how browser families and versions handle them. This is useful when planning progressive enhancement or deprecating old browser support.

Community data and references

Can I Use describes support data contributions from the GitHub community and links out to related tools and support sites. Many web developers use it alongside MDN Web Docs, browser release notes, test suites, and real-device testing because compatibility data still needs context and verification for important user flows.

Who uses Can I Use

Can I Use is used by frontend developers, web designers, QA engineers, accessibility specialists, technical leads, product teams, documentation writers, educators, and browser-support decision makers. Some users check a single CSS property, while others use the site to shape broader browser support policies.

Why it matters

Can I Use matters because web compatibility affects whether real users can access features as intended. The site helps teams avoid silent breakage, plan fallbacks, explain browser-support decisions, and adopt new web platform features with a clearer view of risk.

WHOIS domain data

Data pulled: May 24, 2026View current WHOIS record

Domain: caniuse.com
IP address: 199.250.214.41
Registrar: Tucows Domains Inc.
WHOIS server: whois.tucows.com
Referral URL: http://www.tucows.com
Created: April 27, 2010
Updated: April 13, 2026
Expires: April 27, 2027
Nameservers: ns.inmotionhosting.com (74.124.210.242); ns2.inmotionhosting.com (70.39.150.2)
Domain status: ok
Contact privacy: Registrant contact details are redacted for privacy.

Key concepts

Support tableA browser-version grid showing whether a web platform feature is supported.
Partial supportA state where a feature works only in some cases or lacks important behavior.
Usage shareBrowser-version audience data used to estimate how many users can use a feature.
Progressive enhancementA web design strategy where newer features improve an experience without breaking the basic path.

Common workflows

Search for a CSS, HTML, JavaScript API, media, or security feature before using it in production.
Compare support across browser families and versions during frontend planning.
Use usage data to decide whether a fallback or polyfill is still necessary.
Pair Can I Use data with MDN documentation, browser testing, analytics, and QA results.

Common misconceptions

Can I Use does not replace testing; it gives compatibility signals that still need validation in the target product.
A green support cell does not always mean every edge case works exactly the same across browsers.
Global browser usage may not match a specific site's audience, region, device mix, or enterprise environment.

Open questions

How should compatibility sites represent nuanced behavior when browser support is partial, buggy, or changing quickly?
How will developers combine public browser usage data with privacy-preserving analytics and real-device testing?
How can web teams communicate browser support decisions clearly to product, design, and customer-support groups?