Now You Can Use

Now You Can Use is a searchable timeline of web platform features and their Baseline availability. It helps developers answer a practical question that ordinary release notes often leave open. A browser may have announced an API, CSS property, HTML element, or JavaScript capability, but is it available across the major browser engines yet? The site collects that compatibility data in one browsable reference and organizes features by the date when they reached a shared support milestone. It is especially useful for engineers returning to frontend work after time in enterprise backends or legacy applications, where an older mental model can lead to unnecessary polyfills, preprocessors, or packages.

The main page divides the catalog into Widely Available, Newly Available, and Limited groups. A keyword search can narrow the list by a feature name or concept, while separate filters cover status, category, and Baseline year. Categories range from CSS, HTML elements, selectors, and JavaScript to WebAssembly, media queries, forms, performance, WebGL, security, storage, workers, and many smaller platform areas. Year filters cover Baseline milestones from 2018 onward. Results are placed on a chronological timeline, which makes the site useful both for checking one feature and for scanning what has changed in the platform during a particular period.

Each feature entry gives more than a badge. The timeline card includes a short explanation, its category, current Baseline status, the Baseline date, and the browser versions associated with support in Chrome, Firefox, Safari, and Edge. A details page provides a focused view when a developer needs to investigate one item rather than browse the whole catalog. This presentation connects the high-level readiness label to concrete compatibility information. It also helps readers distinguish a feature that has just arrived across core engines from one that has had time to reach a broader installed browser base.

The status model comes from the WebDX Baseline dataset rather than a homegrown scoring system. In the site's explanation, Newly Available means a feature has shipped across the core browser engines on desktop and mobile. Widely Available follows after 30 months, providing a more conservative milestone for teams that support delayed corporate updates or older devices. Limited identifies features that are still absent from at least one major engine. The site frames Limited features as candidates for progressive enhancement or feature flags. This model will not replace project-specific testing, but it gives teams a consistent starting point for deciding where that testing effort belongs.

Now You Can Use also makes the underlying catalog available outside the visual interface. Public RSS 2.0 and Atom 1.0 feeds can be filtered by availability status, category, year, or combinations of those fields. Every feature has a standalone XML document with its name, description, group, Baseline dates, browser support, specifications, compatibility keys, and canonical page address. The feeds support conditional requests with ETag and compressed responses, so a script or feed reader can check for changes without repeatedly downloading unchanged content. This gives teams a lightweight way to follow platform updates or pull compatibility records into an internal workflow without a custom client library.

The clearest fit is for web developers, frontend leads, platform teams, and technical educators. An engineer can check whether native CSS nesting is mature enough for a supported browser policy, compare the arrival dates of related APIs, or find native replacements for code that once required a library. A team maintaining an enterprise application can use the Widely Available view as a conservative discovery list. Someone working on a modern evergreen application may care more about the Newly Available stream. The search and filters make all of these paths faster than reading separate browser release notes, while the timeline shows how quickly the platform is moving.

The site is free to browse, and its feeds and XML documents are publicly accessible. There is no account, paid plan, or commercial upgrade presented. Its focus is intentionally narrower than a full compatibility database. Baseline summarizes support across a defined core browser set, so it does not cover every embedded web view, older device, assistive technology combination, or browser outside that set. It also does not decide whether a feature is appropriate for a particular product. Within those limits, Now You Can Use offers a clear, current reference for discovering native platform capabilities, checking their interoperability status, and following changes in a machine-readable form.