docs: add descriptions to plugin READMEs

packages/jest/README.md

@@ -1,5 +1,25 @@
 # @swc/plugin-jest
 
+The SWC implementation of `babel-jest`. This plugin transforms test files using SWC, enabling fast Jest-based testing without Babel. It replaces `babel-jest` as the transformer in Jest configurations and supports TypeScript, JSX, and modern JavaScript features.
+
+## Usage
+
+Install the plugin and configure Jest to use SWC as the transformer:
+
+```sh
+npm install --save-dev @swc/plugin-jest @swc/jest @swc/core
+```
+
+Then update your Jest configuration (e.g. `jest.config.js`):
+
+```js
+module.exports = {
+  transform: {
+    "^.+\\.(t|j)sx?$": "@swc/jest",
+  },
+};
+```
+
 # @swc/plugin-jest
 
 ## 12.7.0

packages/loadable-components/README.md

@@ -1,5 +1,7 @@
 # loadable-components
 
+SWC plugin for [`@loadable/component`](https://loadable-components.com/). It transforms dynamic imports inside loadable functions to add chunk names and enable server-side rendering (SSR) support for code-splitting. This is the SWC equivalent of [`babel-plugin-loadable-components`](https://github.com/gregberge/loadable-components/tree/main/packages/babel-plugin).
+
 ## Config
 
 ```json

packages/noop/README.md

@@ -1,5 +1,19 @@
 # @swc/plugin-noop
 
+A no-operation (noop) SWC plugin that passes the AST through unchanged. Useful for debugging the SWC plugin infrastructure, measuring plugin overhead, or as a minimal starting template for new plugins.
+
+## Usage
+
+```json
+{
+  "jsc": {
+    "experimental": {
+      "plugins": [["@swc/plugin-noop", {}]]
+    }
+  }
+}
+```
+
 # @swc/plugin-noop
 
 ## 12.7.0

packages/react-remove-properties/README.md

@@ -1,4 +1,6 @@
-# react-remove-properties
+# @swc/plugin-react-remove-properties
+
+Removes custom React properties (such as `data-testid`) from JSX elements at build time. This reduces bundle size and prevents test-only attributes from being shipped to production. By default it removes all `data-testid` attributes, but you can configure it to target any property using a regex pattern.
 
 See https://nextjs.org/docs/architecture/nextjs-compiler#remove-react-properties for more information.
 

packages/relay/README.md

@@ -1,3 +1,7 @@
+# @swc/plugin-relay
+
+SWC plugin for [Relay](https://relay.dev/), Facebook's GraphQL client framework for React. It compiles `graphql` tagged template literals into Relay-compatible artifacts, replacing them with `require()` calls to the compiled query files. This is the SWC equivalent of [`babel-plugin-relay`](https://www.npmjs.com/package/babel-plugin-relay).
+
 ### `@swc/plugin-relay`
 
 #### Setup

packages/remove-console/README.md

@@ -1,4 +1,6 @@
-# remove-console
+# @swc/plugin-remove-console
+
+Removes `console.*` calls (e.g. `console.log`, `console.warn`, `console.error`) from JavaScript/TypeScript code at build time. This reduces bundle size and prevents debug output from being included in production builds. Specific console methods can be excluded from removal (e.g. keeping `console.error`).
 
 See https://nextjs.org/docs/architecture/nextjs-compiler#remove-console for more information.
 

packages/styled-components/README.md

@@ -1,3 +1,7 @@
+# @swc/plugin-styled-components
+
+SWC plugin for [styled-components](https://styled-components.com/), a popular CSS-in-JS library. It adds display names for better debugging, server-side rendering (SSR) support via deterministic class names, and smaller bundles by removing unnecessary code in production. This is the SWC equivalent of [`babel-plugin-styled-components`](https://github.com/styled-components/babel-plugin-styled-components).
+
 ### `@swc/plugin-styled-components`
 
 #### Setup

packages/styled-jsx/README.md

@@ -1,5 +1,23 @@
 # @swc/plugin-styled-jsx
 
+SWC plugin for [styled-jsx](https://github.com/vercel/styled-jsx), Vercel's CSS-in-JS solution. It transforms `<style jsx>` elements within JSX components into scoped CSS, allowing you to write component-level styles in plain CSS syntax that are automatically scoped to the component.
+
+## Usage
+
+```sh
+npm install --save-dev @swc/plugin-styled-jsx @swc/core
+```
+
+```json
+{
+  "jsc": {
+    "experimental": {
+      "plugins": [["@swc/plugin-styled-jsx", {}]]
+    }
+  }
+}
+```
+
 # @swc/plugin-styled-jsx
 
 ## 13.7.0

packages/swc-confidential/README.md

@@ -1,5 +1,7 @@
 # @swc/plugin-swc-confidential
 
+Encrypts confidential string literals at build time. Strings marked with the `/*#__CONFIDENTIAL__*/` comment annotation are replaced with AES-encrypted values, preventing sensitive data (such as feature flag names, API keys, or internal identifiers) from being exposed as plain text in the compiled bundle.
+
 ## Usage
 
 .swcrc:

packages/swc-magic/README.md

@@ -1,5 +1,7 @@
 # @swc/plugin-swc-magic
 
+SWC plugin for the [`@swc/magic`](https://www.npmjs.com/package/@swc/magic) package. It processes magic annotations in your code, such as `markAsPure`, which marks function calls as side-effect-free so the SWC minifier can safely tree-shake (remove) them when their result is unused.
+
 ## Usage
 
 .swcrc:

packages/swc-sdk/README.md

@@ -1,6 +1,8 @@
 # @swc/plugin-swc-sdk
 
-# Usage
+SWC plugin for the [`@swc/sdk`](https://www.npmjs.com/package/@swc/sdk) package. It provides build-time code transformations including `markAsPure` (marks function calls as pure/side-effect-free for tree-shaking) and `/*#__DYNAMIC__*/` annotations (converts static imports into dynamic imports for conditional lazy loading).
+
+## Usage
 
 .swcrc:
 

packages/transform-imports/README.md

@@ -1,4 +1,8 @@
-# transform-imports
+# @swc/plugin-transform-imports
+
+Transforms named module imports into direct imports from individual files, reducing bundle size by avoiding the import of entire libraries when only specific members are needed. This is the SWC equivalent of [`babel-plugin-transform-imports`](https://www.npmjs.com/package/babel-plugin-transform-imports).
+
+For example, `import { Button } from 'react-bootstrap'` becomes `import Button from 'react-bootstrap/lib/Button'`.
 
 ## Config