diff --git a/website/metadata.json b/website/metadata.json
new file mode 100644
index 0000000000..79b82f0968
--- /dev/null
+++ b/website/metadata.json
@@ -0,0 +1,13 @@
+{
+	"$schema": "./metadata.schema.json",
+	"language": "ja-JP",
+	"version": "0.13.1",
+	"typstOfficialUrl": "https://typst.app",
+	"typstOfficialDocsUrl": "https://typst.app/docs/",
+	"githubOrganizationUrl": "https://github.com/typst-jp",
+	"githubRepositoryUrl": "https://github.com/typst-jp/docs",
+	"discordServerUrl": "https://discord.gg/9xF7k4aAuH",
+	"originUrl": "https://typst-jp.github.io/",
+	"basePath": "/docs/",
+	"displayTranslationStatus": true
+}
diff --git a/website/metadata.schema.json b/website/metadata.schema.json
new file mode 100644
index 0000000000..fa06693724
--- /dev/null
+++ b/website/metadata.schema.json
@@ -0,0 +1,66 @@
+{
+	"$schema": "http://json-schema.org/draft-07/schema#",
+	"type": "object",
+	"properties": {
+		"language": {
+			"type": "string",
+			"description": "The language of the documentation.",
+			"enum": ["ja-JP", "en-US"]
+		},
+		"version": {
+			"type": "string",
+			"description": "The version of the documentation, without a leading 'v'."
+		},
+		"typstOfficialUrl": {
+			"type": "string",
+			"format": "uri",
+			"description": "The official Typst website URL."
+		},
+		"typstOfficialDocsUrl": {
+			"type": "string",
+			"description": "The official Typst documentation base URL.",
+			"pattern": "^https?://.+/$"
+		},
+		"githubOrganizationUrl": {
+			"type": "string",
+			"format": "uri",
+			"description": "The GitHub organization URL."
+		},
+		"githubRepositoryUrl": {
+			"type": "string",
+			"format": "uri",
+			"description": "The GitHub repository URL."
+		},
+		"discordServerUrl": {
+			"type": "string",
+			"format": "uri",
+			"description": "The Discord server invite URL."
+		},
+		"originUrl": {
+			"type": "string",
+			"format": "uri",
+			"description": "The origin URL of the deployed site, used for metadata. Note that the base path should not be included."
+		},
+		"basePath": {
+			"type": "string",
+			"description": "The base public path for deployment. This must match the value used in typst-docs.",
+			"pattern": "^/([^/]+/)*$"
+		},
+		"displayTranslationStatus": {
+			"type": "boolean",
+			"description": "Indicates whether to display the translation status on the site. Community content is always displayed."
+		}
+	},
+	"required": [
+		"language",
+		"version",
+		"typstOfficialUrl",
+		"typstOfficialDocsUrl",
+		"githubOrganizationUrl",
+		"githubRepositoryUrl",
+		"discordServerUrl",
+		"originUrl",
+		"basePath",
+		"displayTranslationStatus"
+	]
+}
diff --git a/website/package.json b/website/package.json
index be3a308670..136a3fed33 100644
--- a/website/package.json
+++ b/website/package.json
@@ -1,6 +1,5 @@
 {
 	"private": true,
-	"version": "0.13.1",
 	"type": "module",
 	"scripts": {
 		"dev": "vite dev",
diff --git a/website/src/metadata.ts b/website/src/metadata.ts
index ccff0c857d..6cb22ee9cb 100644
--- a/website/src/metadata.ts
+++ b/website/src/metadata.ts
@@ -1,22 +1,37 @@
-import { version } from "../package.json";
+import metadataJson from "../metadata.json";
 
-// TODO: The metadata will be configurable via a JSON configuration file.
+type Metadata = {
+	language: "ja-JP" | "en-US";
+	version: string;
+	typstOfficialUrl: string;
+	typstOfficialDocsUrl: `http://${string}/` | `https://${string}/`;
+	githubOrganizationUrl: string;
+	githubRepositoryUrl: string;
+	discordServerUrl: string;
+	originUrl: string;
+	basePath: "/" | `/${string}/`;
+	displayTranslationStatus: boolean;
+};
+
+const metadata = metadataJson as Metadata;
+
+/** The language of the documentation. */
+export const language = metadata.language;
 /** The version of the documentation, without a leading `v`. */
-export { version };
+export const version = metadata.version;
 /** The official Typst website URL. */
-export const typstOfficialUrl = "https://typst.app";
+export const typstOfficialUrl = metadata.typstOfficialUrl;
 /** The official Typst documentation base URL. */
-export const typstOfficialDocsUrl: `http://${string}/` | `https://${string}/` =
-	"https://typst.app/docs/";
+export const typstOfficialDocsUrl = metadata.typstOfficialDocsUrl;
 /** The GitHub organization URL. */
-export const githubOrganizationUrl = "https://github.com/typst-jp";
+export const githubOrganizationUrl = metadata.githubOrganizationUrl;
 /** The GitHub repository URL. */
-export const githubRepositoryUrl = "https://github.com/typst-jp/docs";
+export const githubRepositoryUrl = metadata.githubRepositoryUrl;
 /** The Discord server invite URL. */
-export const discordServerUrl = "https://discord.gg/9xF7k4aAuH";
+export const discordServerUrl = metadata.discordServerUrl;
 /** The origin URL of the deployed site, used for metadata. Note that the base path should not be included. */
-export const originUrl = "https://typst-jp.github.io/";
+export const originUrl = metadata.originUrl;
 /** The base public path for deployment. This must match the value used in typst-docs. */
-export const basePath: "/" | `/${string}/` = "/docs/";
+export const basePath = metadata.basePath;
 /** Indicates whether to display the translation status on the site. Community content is always displayed. */
-export const displayTranslationStatus: boolean = true;
+export const displayTranslationStatus = metadata.displayTranslationStatus;
diff --git a/website/src/translation/index.tsx b/website/src/translation/index.tsx
index 375fe759f6..62fc10bb72 100644
--- a/website/src/translation/index.tsx
+++ b/website/src/translation/index.tsx
@@ -1,5 +1,14 @@
 import type { FC } from "hono/jsx";
 import type { TooltipProps } from "../components/ui/Tooltip";
+import { language } from "../metadata";
+import {
+	Translation as EnUSTranslation,
+	translation as enUSTranslation,
+} from "./en-US";
+import {
+	Translation as JaJPTranslation,
+	translation as jaJPTranslation,
+} from "./ja-JP";
 
 /**
  * Translation dictionary for UI attributes and aria labels.
@@ -80,7 +89,15 @@ export type TranslationComponentProps =
  */
 export type TranslationComponent = FC<TranslationComponentProps>;
 
-/**
- * Switch translation language here.
- */
-export { Translation, translation } from "./ja-JP";
+// Switch translation language.
+const { Translation, translation } = (() => {
+	switch (language) {
+		case "ja-JP":
+			return { Translation: JaJPTranslation, translation: jaJPTranslation };
+		case "en-US":
+			return { Translation: EnUSTranslation, translation: enUSTranslation };
+		default:
+			throw new Error(`Unsupported language: ${language}`);
+	}
+})();
+export { Translation, translation };