diff --git a/.gitignore b/.gitignore
index b947077..1f3a407 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 node_modules/
 dist/
+*.crx
diff --git a/build.js b/build.js
index 69808ea..c3fe140 100644
--- a/build.js
+++ b/build.js
@@ -2,6 +2,7 @@ import esbuild from 'esbuild';
 import process from 'node:process';
 import fs from 'node:fs';
 import path from 'node:path';
+import colors from 'colors';
 
 const is_dev = process.argv.includes('--dev');
 const is_dbg = process.argv.includes('--debug');
@@ -13,8 +14,36 @@ function sourcemap(is_content_script = false) {
     return true;
 }
 
+function displaySize(bytes) {
+    const units = ['B', 'KiB', 'MiB', 'GiB', 'TiB'];
+    let i = 0;
+    while (bytes >= 1024 && i < units.length - 1) {
+        bytes /= 1024;
+        i++;
+    }
+    return `${bytes.toFixed(2)} ${units[i]}`;
+}
+
+/**@param {esbuild.BuildResult} result */
+function displayResult(result) {
+    for (const outfile in result.metafile.outputs) {
+        const output = result.metafile.outputs[outfile];
+        let totalInBytes = 0;
+        for (const input in output.inputs) {
+            const inp = result.metafile.inputs[input];
+            totalInBytes += inp.bytes;
+        }
+        let inInfo = '';
+        if (totalInBytes > 0) {
+            const ratio = (output.bytes / totalInBytes * 100).toFixed(2);
+            inInfo = ` - Input size: ${colors.green(displaySize(totalInBytes))} (${totalInBytes} B), Ratio: ${colors.yellow(ratio + '%')}`;
+        }
+        console.log(`${colors.cyan(outfile)}: ${colors.yellow(displaySize(output.bytes))} (${output.bytes} B)${inInfo}`);
+    }
+}
+
 async function build(name, is_content_script = true) {
-    return await esbuild.build({
+    const result = await esbuild.build({
         entryPoints: [`src/${name}.ts`],
         bundle: true,
         minify: !is_dbg,
@@ -22,7 +51,10 @@ async function build(name, is_content_script = true) {
         platform: 'browser',
         target: ['chrome100'],
         sourcemap: sourcemap(is_content_script),
+        metafile: true,
     })
+    displayResult(result);
+    return result;
 }
 
 async function buildTsx(names) {
@@ -30,7 +62,7 @@ async function buildTsx(names) {
     for (const name of names) {
         entryPoints.push(`src/${name}.tsx`);
     }
-    await esbuild.build({
+    const result = await esbuild.build({
         entryPoints: entryPoints,
         bundle: true,
         minify: !is_dbg,
@@ -42,12 +74,15 @@ async function buildTsx(names) {
         loader: { '.css': 'global-css', '.module.css': 'local-css' },
         splitting: true,
         format: 'esm',
+        metafile: true,
     });
     for (const name of names) {
         const srcHtmlPath = path.join('src', `${name}.html`);
         const distHtmlPath = path.join('dist', `${name}.html`);
         fs.copyFileSync(srcHtmlPath, distHtmlPath);
     }
+    displayResult(result);
+    return result;
 }
 
 fs.rmSync('dist', { recursive: true, force: true });
diff --git a/package.json b/package.json
index 8e69bd4..c57a984 100644
--- a/package.json
+++ b/package.json
@@ -6,6 +6,7 @@
     "@types/react": "^19.2.14",
     "@types/react-dom": "^19.2.3",
     "antd": "^6.3.0",
+    "colors": "^1.4.0",
     "esbuild": "^0.27.3",
     "react": "^19.2.4",
     "react-dom": "^19.2.4"
diff --git a/package.py b/package.py
new file mode 100644
index 0000000..ae9c64b
--- /dev/null
+++ b/package.py
@@ -0,0 +1,26 @@
+from zipfile import ZipFile, ZIP_DEFLATED
+import os
+
+NEED_PACKED = [
+    'dist',
+    'ico',
+    'manifest.json',
+    'LICENSE',
+]
+
+def pack():
+    with ZipFile('bookdownload.crx', 'w', compression=ZIP_DEFLATED, compresslevel=9) as zip:
+        for item in NEED_PACKED:
+            if not os.path.exists(item):
+                print(f'Warning: {item} does not exist, skipping.')
+                continue
+            if os.path.isdir(item):
+                for foldername, subfolders, filenames in os.walk(item):
+                    for filename in filenames:
+                        zip.write(os.path.join(foldername, filename))
+            else:
+                zip.write(item)
+
+
+if __name__ == '__main__':
+    pack()
diff --git a/src/components/SwitchLabel.module.css b/src/components/SwitchLabel.module.css
index 0b4ef82..b263984 100644
--- a/src/components/SwitchLabel.module.css
+++ b/src/components/SwitchLabel.module.css
@@ -1,3 +1,4 @@
 .switch-label > span {
     cursor: pointer;
+    margin-left: 4px;
 }
diff --git a/src/components/SwitchLabel.tsx b/src/components/SwitchLabel.tsx
index abd00bb..ba6054f 100644
--- a/src/components/SwitchLabel.tsx
+++ b/src/components/SwitchLabel.tsx
@@ -10,8 +10,8 @@ export type SwitchLabelProps = {
 export default function SwitchLabel({ label, checked, onChange }: SwitchLabelProps) {
     return (
         <div className={styles["switch-label"]}>
-            <span onClick={() => onChange(!checked)}>{label}</span>
             <Switch checked={checked} onChange={onChange} />
+            <span onClick={() => onChange(!checked)}>{label}</span>
         </div>
     );
 }
\ No newline at end of file
diff --git a/src/config.ts b/src/config.ts
index b09a732..f581019 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -31,3 +31,66 @@ export class QdConfig {
         this.config.AutoSaveChapter = value;
     }
 }
+
+type IndexedDbConfigData = {
+    compress?: boolean;
+}
+
+export enum DbType {
+    IndexedDb,
+}
+
+type DbConfigData = {
+    IndexedDb?: IndexedDbConfigData;
+    DbType?: DbType;
+}
+
+export class IndexedDbConfig {
+    config: IndexedDbConfigData;
+    constructor(config: IndexedDbConfigData) {
+        this.config = config;
+    }
+    get compress(): boolean {
+        return this.config.compress ?? false;
+    }
+    set compress(value: boolean) {
+        this.config.compress = value;
+    }
+}
+
+export class DbConfig {
+    static STORAGE_KEY = 'db_config';
+    config?: DbConfigData;
+    constructor() {
+    }
+    async init() {
+        this.config = await loadConfig<DbConfigData>(DbConfig.STORAGE_KEY, {});
+    }
+    async save() {
+        if (!this.config) {
+            throw new Error('Config not initialized');
+        }
+        await saveConfig(DbConfig.STORAGE_KEY, this.config);
+    }
+    reset() {
+        this.config = {};
+    }
+    get IndexedDb(): IndexedDbConfig {
+        if (!this.config) {
+            throw new Error('Config not initialized');
+        }
+        if (!this.config.IndexedDb) {
+            this.config.IndexedDb = {};
+        }
+        return new IndexedDbConfig(this.config.IndexedDb);
+    }
+    get DbType(): DbType {
+        return this.config?.DbType ?? DbType.IndexedDb;
+    }
+    set DbType(value: DbType) {
+        if (!this.config) {
+            throw new Error('Config not initialized');
+        }
+        this.config.DbType = value;
+    }
+}
diff --git a/src/settings.tsx b/src/settings.tsx
index 3e29f35..fb9541d 100644
--- a/src/settings.tsx
+++ b/src/settings.tsx
@@ -2,15 +2,21 @@ import { createRoot } from "react-dom/client";
 import { Typography, Tabs } from "antd";
 import type { TabsProps } from 'antd';
 import QdSettings from "./settings/QdSettings";
+import DbSettings from "./settings/DbSettings";
 
 const { Title } = Typography;
 
 const items: TabsProps['items'] = [
     {
         'key': '1',
+        'label': `数据库设置`,
+        'children': <DbSettings />,
+    },
+    {
+        'key': '2',
         'label': `起点设置`,
         'children': <QdSettings />,
-    }
+    },
 ];
 
 function Settings() {
diff --git a/src/settings/DbSettings.tsx b/src/settings/DbSettings.tsx
new file mode 100644
index 0000000..e2cabab
--- /dev/null
+++ b/src/settings/DbSettings.tsx
@@ -0,0 +1,71 @@
+import { FloatButton, Affix, Button, Space, Select, Input } from "antd";
+import { SaveTwoTone, SaveOutlined, SyncOutlined } from "@ant-design/icons";
+import { useEffect, useState } from "react";
+import { DbConfig, DbType, IndexedDbConfig } from "../config";
+import AlertWarn from "../components/AlertWarn";
+import SwitchLabel from "../components/SwitchLabel";
+
+function IndexedDbSettings({config}: { config: IndexedDbConfig }) {
+    const [compress, setCompress] = useState(false);
+    useEffect(() => {
+        setCompress(config.compress);
+    }, [config]);
+    function handleCompressChange(value: boolean) {
+        setCompress(value);
+        config.compress = value;
+    }
+    return (<>
+        <SwitchLabel label="启用数据压缩" checked={compress} onChange={handleCompressChange} />
+    </>)
+}
+
+export default function DbSettings() {
+    const [container, setContainer] = useState<HTMLElement | null>(null);
+    const [config] = useState(new DbConfig());
+    const [alert, setAlert] = useState<{ title?: string; content: string } | null>(null);
+    const [dbType, setDbType] = useState<DbType>(DbType.IndexedDb);
+    const [indexedDbConfig, setIndexedDbConfig] = useState<IndexedDbConfig>(new IndexedDbConfig({}));
+    function handleConfig() {
+        setDbType(config.DbType);
+        setIndexedDbConfig(config.IndexedDb);
+    }
+    useEffect(() => {
+        config.init().then(() => {
+            handleConfig();
+        }).catch(e => {
+            setAlert({ content: "加载设置失败：" + (e instanceof Error ? e.message : "未知错误"), title: "错误" });
+        });
+    }, []);
+    function saveSettings() {
+        config.DbType = dbType;
+        config.save().then(() => {
+            setAlert({ content: "设置已保存！", title: "通知" });
+        }).catch(e => {
+            setAlert({ content: e instanceof Error ? e.message : "未知错误", title: "错误" });
+        });
+    }
+    function resetSettings() {
+        config.reset();
+        handleConfig();
+    }
+    return (
+        <div ref={setContainer}>
+            <Affix target={() => container}>
+                <Button type="primary" icon={<SaveOutlined />} onClick={saveSettings}>保存设置</Button>
+                <Button onClick={resetSettings} style={{ marginLeft: 8 }} icon={<SyncOutlined />}>重置设置</Button>
+            </Affix>
+            <br />
+            <Space orientation="vertical">
+                <Select value={dbType} onChange={value => setDbType(value)} style={{ width: 200 }} options={[
+                    {
+                        label: "IndexedDb",
+                        value: DbType.IndexedDb,
+                    },
+                ]} />
+                {dbType === DbType.IndexedDb && <IndexedDbSettings config={indexedDbConfig} />}
+            </Space>
+            <FloatButton icon={<SaveTwoTone />} tooltip="保存设置" onClick={saveSettings} />
+            {alert && <AlertWarn title={alert.title} content={alert.content} onClose={() => setAlert(null)} />}
+        </div>
+    );
+}
diff --git a/src/utils.ts b/src/utils.ts
index 1925813..399ca98 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -70,3 +70,64 @@ export async function loadConfig<T>(key: string, defaultValue: T): Promise<T> {
     }
     return r[key];
 }
+
+/**
+ * Compress data using CompressionStream API. The result is a Uint8Array with the first 4 bytes representing the original data length (little-endian), followed by the compressed data.
+ */
+export async function compress(data: BufferSource, method: CompressionFormat = 'deflate'): Promise<Uint8Array<ArrayBuffer>> {
+    if (typeof CompressionStream === 'undefined') {
+        throw new Error('CompressionStream is not supported in this browser');
+    }
+    const stream = new CompressionStream(method);
+    const writer = stream.writable.getWriter();
+    const dataLength = data.byteLength;
+    writer.write(data);
+    writer.close();
+    const reader = stream.readable.getReader();
+    const chunks: Uint8Array[] = [];
+    let totalLength = 0;
+    while (true) {
+        const { value, done } = await reader.read();
+        if (done) {
+            break;
+        }
+        chunks.push(value);
+        totalLength += value.length;
+    }
+    const result = new Uint8Array(totalLength + 4);
+    const view = new DataView(result.buffer);
+    view.setUint32(0, dataLength, true);
+    let offset = 4;
+    for (const chunk of chunks) {
+        result.set(chunk, offset);
+        offset += chunk.length;
+    }
+    return result;
+}
+
+/**
+ * Decompress data using DecompressionStream API. The input should be a Uint8Array where the first 4 bytes represent the original data length (little-endian), followed by the compressed data. The output is a Uint8Array containing the decompressed data.
+ */
+export async function decompress(data: BufferSource, method: CompressionFormat = 'deflate'): Promise<Uint8Array<ArrayBuffer>> {
+    if (typeof DecompressionStream === 'undefined') {
+        throw new Error('DecompressionStream is not supported in this browser');
+    }
+    const stream = new DecompressionStream(method);
+    const view = new DataView(data instanceof ArrayBuffer ? data : data.buffer);
+    const originalLength = view.getUint32(0, true);
+    const writer = stream.writable.getWriter();
+    writer.write(view.buffer.slice(4));
+    writer.close();
+    const reader = stream.readable.getReader();
+    const result = new Uint8Array(originalLength);
+    let offset = 0;
+    while (true) {
+        const { value, done } = await reader.read();
+        if (done) {
+            break;
+        }
+        result.set(value, offset);
+        offset += value.length;
+    }
+    return result;
+}
diff --git a/yarn.lock b/yarn.lock
index 440d096..e27830f 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -701,6 +701,11 @@ clsx@^2.1.1:
   resolved "https://registry.yarnpkg.com/clsx/-/clsx-2.1.1.tgz#eed397c9fd8bd882bfb18deab7102049a2f32999"
   integrity sha512-eYm0QWBtUrBWZWG0d386OGAw16Z995PiOVo2B7bjWSbHedGl5e0ZWaq65kOGgUSNesEIDkB9ISbTg/JK9dhCZA==
 
+colors@^1.4.0:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/colors/-/colors-1.4.0.tgz#c50491479d4c1bdaed2c9ced32cf7c7dc2360f78"
+  integrity sha512-a+UqTh4kgZg/SlGvfbzDHpgRu7AAQOmmqRHJnxhRZICKFUT91brVhNNt58CMWU9PsBbv3PDCZUHbVxuDiH2mtA==
+
 compute-scroll-into-view@^3.0.2:
   version "3.1.1"
   resolved "https://registry.yarnpkg.com/compute-scroll-into-view/-/compute-scroll-into-view-3.1.1.tgz#02c3386ec531fb6a9881967388e53e8564f3e9aa"