diff --git a/package.json b/package.json
index 538d4fc..e92dfd7 100644
--- a/package.json
+++ b/package.json
@@ -20,6 +20,7 @@
     "@holllo/preact-components": "^0.2.3",
     "htm": "^3.1.1",
     "modern-normalize": "^1.1.0",
+    "nanoid": "^4.0.0",
     "preact": "^10.11.0",
     "webextension-polyfill": "^0.10.0"
   },
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 7d2f259..dd2d70e 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -10,6 +10,7 @@ specifiers:
   c8: ^7.12.0
   htm: ^3.1.1
   modern-normalize: ^1.1.0
+  nanoid: ^4.0.0
   postcss: ^8.4.16
   preact: ^10.11.0
   sass: ^1.55.0
@@ -29,6 +30,7 @@ dependencies:
   '@holllo/preact-components': 0.2.3_htm@3.1.1+preact@10.11.0
   htm: 3.1.1
   modern-normalize: 1.1.0
+  nanoid: 4.0.0
   preact: 10.11.0
   webextension-polyfill: 0.10.0
 
@@ -5197,6 +5199,12 @@ packages:
     hasBin: true
     dev: true
 
+  /nanoid/4.0.0:
+    resolution: {integrity: sha512-IgBP8piMxe/gf73RTQx7hmnhwz0aaEXYakvqZyE302IXW3HyVNhdNGC+O2MwMAVhLEnvXlvKtGbtJf6wvHihCg==}
+    engines: {node: ^14 || ^16 || >=18}
+    hasBin: true
+    dev: false
+
   /natural-compare/1.4.0:
     resolution: {integrity: sha512-OWND8ei3VtNC9h7V60qff3SVobHr996CTwgxubgyQYEpg290h9J0buyECNNJexkFm5sOajh5G116RYA1c8ZMSw==}
     dev: true
@@ -7637,6 +7645,11 @@ packages:
     resolution: {integrity: sha512-liCEteZ5z+QRyh3XzsYWQyxedBHBvx8CDlNvvi+BJz74L0E5/ID2v7JtoX3bD541AlMuOy4e/iWif6hhNGBFNw==}
     engines: {node: '>=12.20'}
     hasBin: true
+    peerDependencies:
+      webpack: '>=1.11.0'
+    peerDependenciesMeta:
+      webpack:
+        optional: true
     dependencies:
       '@eslint/eslintrc': 1.3.2
       '@typescript-eslint/eslint-plugin': 5.36.2_q7mrctxvxoqtj4jpjqmbsyg2qy
@@ -7677,7 +7690,6 @@ packages:
     transitivePeerDependencies:
       - eslint-import-resolver-typescript
       - supports-color
-      - webpack
     dev: true
     bundledDependencies:
       - '@typescript-eslint/eslint-plugin'
diff --git a/source/background-scripts/initialize.ts b/source/background-scripts/initialize.ts
index 4985ed1..3722c61 100644
--- a/source/background-scripts/initialize.ts
+++ b/source/background-scripts/initialize.ts
@@ -21,8 +21,10 @@ browser.runtime.onInstalled.addListener(async () => {
 browser.webNavigation.onBeforeNavigate.addListener(async (details) => {
   const url = new URL(details.url);
 
-  for (const parameters of Object.values(await browser.storage.local.get())) {
-    const redirect = parseRedirect(parameters);
+  for (const [id, parameters] of Object.entries(
+    await browser.storage.local.get(),
+  )) {
+    const redirect = parseRedirect(parameters, id);
     if (redirect === undefined) {
       continue;
     }
diff --git a/source/redirect/base.ts b/source/redirect/base.ts
index 75f99bd..bc5fa3c 100644
--- a/source/redirect/base.ts
+++ b/source/redirect/base.ts
@@ -1,3 +1,5 @@
+import {customAlphabet} from 'nanoid';
+
 export const matcherTypes = ['hostname'] as const;
 export const redirectTypes = ['hostname', 'simple'] as const;
 
@@ -22,7 +24,17 @@ export type RedirectParameters = {
 };
 
 export abstract class Redirect<P extends RedirectParameters> {
-  constructor(public parameters: P & Matcher) {}
+  public static generateId(): string {
+    const alphabet = 'abcdefghijklmnopqrstuvwxyz';
+    const nanoid = customAlphabet(`${alphabet}${alphabet.toUpperCase()}`, 20);
+    return nanoid();
+  }
+
+  public id: string;
+
+  constructor(public parameters: P & Matcher, id?: string) {
+    this.id = id ?? Redirect.generateId();
+  }
 
   public isMatch(url: URL): boolean {
     if (this.parameters.matcherType === 'hostname') {
diff --git a/source/redirect/exports.ts b/source/redirect/exports.ts
index 57a7d8a..5a09d65 100644
--- a/source/redirect/exports.ts
+++ b/source/redirect/exports.ts
@@ -9,14 +9,15 @@ export type Redirects = HostnameRedirect | SimpleRedirect;
 
 export function parseRedirect<P extends Redirects['parameters']>(
   parameters: P,
+  id: string,
 ): Redirects | undefined {
   const redirectType = parameters?.redirectType;
 
   if (redirectType === 'hostname') {
-    return new HostnameRedirect(parameters);
+    return new HostnameRedirect(parameters, id);
   }
 
   if (redirectType === 'simple') {
-    return new SimpleRedirect(parameters);
+    return new SimpleRedirect(parameters, id);
   }
 }
diff --git a/tests/redirect.test.ts b/tests/redirect.test.ts
index 3135947..d387f6f 100644
--- a/tests/redirect.test.ts
+++ b/tests/redirect.test.ts
@@ -40,11 +40,13 @@ test('parseRedirect', (t) => {
   ];
 
   for (const sample of samples) {
-    const redirect = parseRedirect(sample);
+    const redirect = parseRedirect(sample, Redirect.generateId());
 
     if (redirect === undefined) {
       t.pass('parseRedirect returned undefined');
     } else {
+      t.regex(redirect.id, /^[a-z]{20}$/i);
+      redirect.id = 'id';
       t.snapshot(redirect, `Class ${redirect.constructor.name}`);
     }
   }
diff --git a/tests/snapshots/tests/redirect.test.ts.md b/tests/snapshots/tests/redirect.test.ts.md
index 692af26..a58fc1c 100644
--- a/tests/snapshots/tests/redirect.test.ts.md
+++ b/tests/snapshots/tests/redirect.test.ts.md
@@ -9,6 +9,7 @@ Generated by [AVA](https://avajs.dev).
 > Class HostnameRedirect
 
     HostnameRedirect {
+      id: 'id',
       parameters: {
         hostname: 'example.org',
         matcherType: 'hostname',
@@ -20,6 +21,7 @@ Generated by [AVA](https://avajs.dev).
 > Class SimpleRedirect
 
     SimpleRedirect {
+      id: 'id',
       parameters: {
         matcherType: 'hostname',
         redirectType: 'simple',
diff --git a/tests/snapshots/tests/redirect.test.ts.snap b/tests/snapshots/tests/redirect.test.ts.snap
index 904e77a..b8e6b6b 100644
Binary files a/tests/snapshots/tests/redirect.test.ts.snap and b/tests/snapshots/tests/redirect.test.ts.snap differ