diff --git a/denops/gin/git/__snapshots__/hosting_service_test.ts.snap b/denops/gin/git/__snapshots__/hosting_service_test.ts.snap
new file mode 100644
index 00000000..8bb72b89
--- /dev/null
+++ b/denops/gin/git/__snapshots__/hosting_service_test.ts.snap
@@ -0,0 +1,249 @@
+export const snapshot = {};
+
+snapshot[`getHostingService 1`] = `
+{
+  result: URL {
+    hash: "",
+    host: "github.com",
+    hostname: "github.com",
+    href: "https://github.com/lambdalisue/gin.vim",
+    origin: "https://github.com",
+    password: "",
+    pathname: "/lambdalisue/gin.vim",
+    port: "",
+    protocol: "https:",
+    search: "",
+    username: "",
+  },
+  url: URL {
+    hash: "",
+    host: "github.com",
+    hostname: "github.com",
+    href: "https://github.com/lambdalisue/gin.vim",
+    origin: "https://github.com",
+    password: "",
+    pathname: "/lambdalisue/gin.vim",
+    port: "",
+    protocol: "https:",
+    search: "",
+    username: "",
+  },
+}
+`;
+
+snapshot[`getHostingService 2`] = `
+{
+  result: URL {
+    hash: "",
+    host: "github.com",
+    hostname: "github.com",
+    href: "https://github.com/lambdalisue/gin.vim/blob/main/denops/gin/main.ts",
+    origin: "https://github.com",
+    password: "",
+    pathname: "/lambdalisue/gin.vim/blob/main/denops/gin/main.ts",
+    port: "",
+    protocol: "https:",
+    search: "",
+    username: "",
+  },
+  url: URL {
+    hash: "",
+    host: "github.com",
+    hostname: "github.com",
+    href: "https://github.com/lambdalisue/gin.vim",
+    origin: "https://github.com",
+    password: "",
+    pathname: "/lambdalisue/gin.vim",
+    port: "",
+    protocol: "https:",
+    search: "",
+    username: "",
+  },
+}
+`;
+
+snapshot[`getHostingService 3`] = `
+{
+  result: URL {
+    hash: "#L10",
+    host: "github.com",
+    hostname: "github.com",
+    href: "https://github.com/lambdalisue/gin.vim/blob/main/denops/gin/main.ts?plain=1#L10",
+    origin: "https://github.com",
+    password: "",
+    pathname: "/lambdalisue/gin.vim/blob/main/denops/gin/main.ts",
+    port: "",
+    protocol: "https:",
+    search: "?plain=1",
+    username: "",
+  },
+  url: URL {
+    hash: "",
+    host: "github.com",
+    hostname: "github.com",
+    href: "https://github.com/lambdalisue/gin.vim",
+    origin: "https://github.com",
+    password: "",
+    pathname: "/lambdalisue/gin.vim",
+    port: "",
+    protocol: "https:",
+    search: "",
+    username: "",
+  },
+}
+`;
+
+snapshot[`getHostingService 4`] = `
+{
+  result: URL {
+    hash: "#L10-L20",
+    host: "github.com",
+    hostname: "github.com",
+    href: "https://github.com/lambdalisue/gin.vim/blob/main/denops/gin/main.ts?plain=1#L10-L20",
+    origin: "https://github.com",
+    password: "",
+    pathname: "/lambdalisue/gin.vim/blob/main/denops/gin/main.ts",
+    port: "",
+    protocol: "https:",
+    search: "?plain=1",
+    username: "",
+  },
+  url: URL {
+    hash: "",
+    host: "github.com",
+    hostname: "github.com",
+    href: "https://github.com/lambdalisue/gin.vim",
+    origin: "https://github.com",
+    password: "",
+    pathname: "/lambdalisue/gin.vim",
+    port: "",
+    protocol: "https:",
+    search: "",
+    username: "",
+  },
+}
+`;
+
+snapshot[`getHostingService 5`] = `
+{
+  result: URL {
+    hash: "",
+    host: "github.com",
+    hostname: "github.com",
+    href: "https://github.com/lambdalisue/gin.vim",
+    origin: "https://github.com",
+    password: "",
+    pathname: "/lambdalisue/gin.vim",
+    port: "",
+    protocol: "https:",
+    search: "",
+    username: "",
+  },
+  url: URL {
+    hash: "",
+    host: "github.com",
+    hostname: "github.com",
+    href: "ssh://git@github.com/lambdalisue/gin.vim",
+    origin: "null",
+    password: "",
+    pathname: "/lambdalisue/gin.vim",
+    port: "",
+    protocol: "ssh:",
+    search: "",
+    username: "git",
+  },
+}
+`;
+
+snapshot[`getHostingService 6`] = `
+{
+  result: URL {
+    hash: "",
+    host: "github.com",
+    hostname: "github.com",
+    href: "https://github.com/lambdalisue/gin.vim/blob/main/denops/gin/main.ts",
+    origin: "https://github.com",
+    password: "",
+    pathname: "/lambdalisue/gin.vim/blob/main/denops/gin/main.ts",
+    port: "",
+    protocol: "https:",
+    search: "",
+    username: "",
+  },
+  url: URL {
+    hash: "",
+    host: "github.com",
+    hostname: "github.com",
+    href: "ssh://git@github.com/lambdalisue/gin.vim",
+    origin: "null",
+    password: "",
+    pathname: "/lambdalisue/gin.vim",
+    port: "",
+    protocol: "ssh:",
+    search: "",
+    username: "git",
+  },
+}
+`;
+
+snapshot[`getHostingService 7`] = `
+{
+  result: URL {
+    hash: "#L10",
+    host: "github.com",
+    hostname: "github.com",
+    href: "https://github.com/lambdalisue/gin.vim/blob/main/denops/gin/main.ts?plain=1#L10",
+    origin: "https://github.com",
+    password: "",
+    pathname: "/lambdalisue/gin.vim/blob/main/denops/gin/main.ts",
+    port: "",
+    protocol: "https:",
+    search: "?plain=1",
+    username: "",
+  },
+  url: URL {
+    hash: "",
+    host: "github.com",
+    hostname: "github.com",
+    href: "ssh://git@github.com/lambdalisue/gin.vim",
+    origin: "null",
+    password: "",
+    pathname: "/lambdalisue/gin.vim",
+    port: "",
+    protocol: "ssh:",
+    search: "",
+    username: "git",
+  },
+}
+`;
+
+snapshot[`getHostingService 8`] = `
+{
+  result: URL {
+    hash: "#L10-L20",
+    host: "github.com",
+    hostname: "github.com",
+    href: "https://github.com/lambdalisue/gin.vim/blob/main/denops/gin/main.ts?plain=1#L10-L20",
+    origin: "https://github.com",
+    password: "",
+    pathname: "/lambdalisue/gin.vim/blob/main/denops/gin/main.ts",
+    port: "",
+    protocol: "https:",
+    search: "?plain=1",
+    username: "",
+  },
+  url: URL {
+    hash: "",
+    host: "github.com",
+    hostname: "github.com",
+    href: "ssh://git@github.com/lambdalisue/gin.vim",
+    origin: "null",
+    password: "",
+    pathname: "/lambdalisue/gin.vim",
+    port: "",
+    protocol: "ssh:",
+    search: "",
+    username: "git",
+  },
+}
+`;
diff --git a/denops/gin/git/hosting_service.ts b/denops/gin/git/hosting_service.ts
new file mode 100644
index 00000000..2fd514af
--- /dev/null
+++ b/denops/gin/git/hosting_service.ts
@@ -0,0 +1,18 @@
+export type HostingService = {
+  getRootURL(): URL;
+  getBlobURL(
+    commitish: string,
+    filename: string,
+    options?: { lineStart?: number; lineEnd?: number },
+  ): URL;
+};
+
+export async function getHostingService(
+  url: URL,
+): Promise<HostingService> {
+  const svcName = url.hostname.replace(/\W/g, "_");
+  const svc = await import(
+    new URL(`./hosting_service/${svcName}.ts`, import.meta.url).href
+  );
+  return new svc.Service(url);
+}
diff --git a/denops/gin/git/hosting_service/github_com.ts b/denops/gin/git/hosting_service/github_com.ts
new file mode 100644
index 00000000..d5457781
--- /dev/null
+++ b/denops/gin/git/hosting_service/github_com.ts
@@ -0,0 +1,34 @@
+import { HostingService } from "../hosting_service.ts";
+
+export class Service implements HostingService {
+  #url: URL;
+
+  constructor(url: URL) {
+    this.#url = url;
+  }
+
+  getRootURL(): URL {
+    const [owner, repo] = this.#url.pathname.split("/").slice(1);
+    return new URL(
+      `https://${this.#url.hostname}/${owner}/${repo}`,
+    );
+  }
+
+  getBlobURL(
+    commitish: string,
+    filename: string,
+    { lineStart, lineEnd }: { lineStart?: number; lineEnd?: number } = {},
+  ): URL {
+    const [owner, repo] = this.#url.pathname.split("/").slice(1);
+    // Note:
+    // Without `?plain=1`, GitHub shows the rendering result of content (e.g. Markdown) so that we
+    // cannot specify the line range.
+    const suffix = lineStart && lineEnd
+      ? `?plain=1#L${lineStart}-L${lineEnd}`
+      : lineStart
+      ? `?plain=1#L${lineStart}`
+      : "";
+    const pathname = `${owner}/${repo}/blob/${commitish}/${filename}${suffix}`;
+    return new URL(`https://${this.#url.hostname}/${pathname}`);
+  }
+}
diff --git a/denops/gin/git/hosting_service_test.ts b/denops/gin/git/hosting_service_test.ts
new file mode 100644
index 00000000..f6a3429e
--- /dev/null
+++ b/denops/gin/git/hosting_service_test.ts
@@ -0,0 +1,55 @@
+import { assertSnapshot } from "https://deno.land/std@0.192.0/testing/snapshot.ts";
+import { getHostingService } from "./hosting_service.ts";
+
+Deno.test("getHostingService", async (t) => {
+  const urls = [
+    new URL("https://github.com/lambdalisue/gin.vim"),
+    new URL("ssh://git@github.com/lambdalisue/gin.vim"),
+  ];
+
+  for (const url of urls) {
+    await t.step(`getRootURL for ${url}`, async () => {
+      const svc = await getHostingService(url);
+      const result = svc.getRootURL();
+      await assertSnapshot(t, {
+        url,
+        result,
+      });
+    });
+
+    await t.step(`getBlobURL for ${url}`, async () => {
+      const svc = await getHostingService(url);
+      const result = svc.getBlobURL("main", "denops/gin/main.ts");
+      await assertSnapshot(t, {
+        url,
+        result,
+      });
+    });
+
+    await t.step(`getBlobURL with lineStart for ${url}`, async () => {
+      const svc = await getHostingService(url);
+      const result = svc.getBlobURL("main", "denops/gin/main.ts", {
+        lineStart: 10,
+      });
+      await assertSnapshot(t, {
+        url,
+        result,
+      });
+    });
+
+    await t.step(
+      `getBlobURL with lineStart/lineEnd for ${url}`,
+      async () => {
+        const svc = await getHostingService(url);
+        const result = svc.getBlobURL("main", "denops/gin/main.ts", {
+          lineStart: 10,
+          lineEnd: 20,
+        });
+        await assertSnapshot(t, {
+          url,
+          result,
+        });
+      },
+    );
+  }
+});