diff --git a/app/build.gradle b/app/build.gradle
index 0a87dd191..f60170c10 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -253,7 +253,7 @@ dependencies {
     implementation('com.github.liuyueyi.quick-chinese-transfer:quick-transfer-core:0.2.4')
 
     //加解密类库,有些书源使用
-    implementation('cn.hutool:hutool-crypto:5.8.1')
+    implementation('cn.hutool:hutool-crypto:5.8.2')
 
     //firebase, 崩溃统计和性能统计, 会导致共存版本崩溃
     //implementation platform('com.google.firebase:firebase-bom:30.0.1')
diff --git a/app/src/main/assets/updateLog.md b/app/src/main/assets/updateLog.md
index 4d6e0ba67..7634cf5f3 100644
--- a/app/src/main/assets/updateLog.md
+++ b/app/src/main/assets/updateLog.md
@@ -11,6 +11,11 @@
 * 正文出现缺字漏字、内容缺失、排版错乱等情况，有可能是净化规则或简繁转换出现问题。
 * 漫画源看书显示乱码，**阅读与其他软件的源并不通用**，请导入阅读的支持的漫画源！
 
+**2022/05/30**
+
+* 缓存导出添加导出图片文件选项
+* 其他设置添加图片绘制缓存选项
+
 **2022/05/27**
 
 * 书源详情页规则添加刷新时重新获取目录页链接Url的配置,true or false
diff --git a/app/src/main/java/io/legado/app/constant/PreferKey.kt b/app/src/main/java/io/legado/app/constant/PreferKey.kt
index 588ca8581..de3e8c628 100644
--- a/app/src/main/java/io/legado/app/constant/PreferKey.kt
+++ b/app/src/main/java/io/legado/app/constant/PreferKey.kt
@@ -55,6 +55,7 @@ object PreferKey {
     const val exportToWebDav = "webDavCacheBackup"
     const val exportNoChapterName = "exportNoChapterName"
     const val exportType = "exportType"
+    const val exportPictureFile = "exportPictureFile"
     const val changeSourceCheckAuthor = "changeSourceCheckAuthor"
     const val changeSourceLoadToc = "changeSourceLoadToc"
     const val changeSourceLoadInfo = "changeSourceLoadInfo"
@@ -82,6 +83,7 @@ object PreferKey {
     const val syncBookProgress = "syncBookProgress"
     const val cronet = "Cronet"
     const val antiAlias = "antiAlias"
+    const val bitmapCacheSize = "bitmapCacheSize"
     const val preDownloadNum = "preDownloadNum"
     const val autoRefresh = "auto_refresh"
     const val defaultToRead = "defaultToRead"
@@ -107,7 +109,6 @@ object PreferKey {
     const val welcomeShowIcon = "welcomeShowIcon"
     const val welcomeShowIconDark = "welcomeShowIconDark"
 
-
     const val cPrimary = "colorPrimary"
     const val cAccent = "colorAccent"
     const val cBackground = "colorBackground"
@@ -121,4 +122,5 @@ object PreferKey {
     const val cNBBackground = "colorBottomBackgroundNight"
     const val bgImageN = "backgroundImageNight"
     const val bgImageNBlurring = "backgroundImageNightBlurring"
+
 }
diff --git a/app/src/main/java/io/legado/app/help/config/AppConfig.kt b/app/src/main/java/io/legado/app/help/config/AppConfig.kt
index f36decf1d..8fa01999a 100644
--- a/app/src/main/java/io/legado/app/help/config/AppConfig.kt
+++ b/app/src/main/java/io/legado/app/help/config/AppConfig.kt
@@ -243,6 +243,11 @@ object AppConfig : SharedPreferences.OnSharedPreferenceChangeListener {
         set(value) {
             appCtx.putPrefInt(PreferKey.exportType, value)
         }
+    var exportPictureFile: Boolean
+        get() = appCtx.getPrefBoolean(PreferKey.exportPictureFile, false)
+        set(value) {
+            appCtx.putPrefBoolean(PreferKey.exportPictureFile, value)
+        }
 
     var changeSourceCheckAuthor: Boolean
         get() = appCtx.getPrefBoolean(PreferKey.changeSourceCheckAuthor)
@@ -323,5 +328,11 @@ object AppConfig : SharedPreferences.OnSharedPreferenceChangeListener {
         }
         return ua
     }
+
+    var bitmapCacheSize: Int
+        get() = appCtx.getPrefInt(PreferKey.bitmapCacheSize, 50)
+        set(value) {
+            appCtx.putPrefInt(PreferKey.bitmapCacheSize, value)
+        }
 }
 
diff --git a/app/src/main/java/io/legado/app/ui/book/cache/CacheActivity.kt b/app/src/main/java/io/legado/app/ui/book/cache/CacheActivity.kt
index 9d9559b73..0e530989f 100644
--- a/app/src/main/java/io/legado/app/ui/book/cache/CacheActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/book/cache/CacheActivity.kt
@@ -93,6 +93,7 @@ class CacheActivity : VMBaseActivity<ActivityCacheBookBinding, CacheViewModel>()
         menu.findItem(R.id.menu_enable_replace)?.isChecked = AppConfig.exportUseReplace
         menu.findItem(R.id.menu_export_no_chapter_name)?.isChecked = AppConfig.exportNoChapterName
         menu.findItem(R.id.menu_export_web_dav)?.isChecked = AppConfig.exportToWebDav
+        menu.findItem(R.id.menu_export_pics_file)?.isChecked = AppConfig.exportPictureFile
         menu.findItem(R.id.menu_export_type)?.title =
             "${getString(R.string.export_type)}(${getTypeName()})"
         menu.findItem(R.id.menu_export_charset)?.title =
@@ -129,6 +130,7 @@ class CacheActivity : VMBaseActivity<ActivityCacheBookBinding, CacheViewModel>()
             R.id.menu_enable_replace -> AppConfig.exportUseReplace = !item.isChecked
             R.id.menu_export_no_chapter_name -> AppConfig.exportNoChapterName = !item.isChecked
             R.id.menu_export_web_dav -> AppConfig.exportToWebDav = !item.isChecked
+            R.id.menu_export_pics_file -> AppConfig.exportPictureFile = !item.isChecked
             R.id.menu_export_folder -> {
                 selectExportFolder(-1)
             }
diff --git a/app/src/main/java/io/legado/app/ui/book/cache/CacheViewModel.kt b/app/src/main/java/io/legado/app/ui/book/cache/CacheViewModel.kt
index 55e963ab8..4655c07c1 100644
--- a/app/src/main/java/io/legado/app/ui/book/cache/CacheViewModel.kt
+++ b/app/src/main/java/io/legado/app/ui/book/cache/CacheViewModel.kt
@@ -168,17 +168,22 @@ class CacheViewModel(application: Application) : BaseViewModel(application) {
                         chineseConvert = false,
                         reSegment = false
                     ).joinToString("\n")
-                val srcList = arrayListOf<Triple<String, Int, String>>()
-                content?.split("\n")?.forEachIndexed { index, text ->
-                    val matcher = AppPattern.imgPattern.matcher(text)
-                    while (matcher.find()) {
-                        matcher.group(1)?.let {
-                            val src = NetworkUtils.getAbsoluteURL(chapter.url, it)
-                            srcList.add(Triple(chapter.title, index, src))
+                if (AppConfig.exportPictureFile) {
+                    //txt导出图片文件
+                    val srcList = arrayListOf<Triple<String, Int, String>>()
+                    content?.split("\n")?.forEachIndexed { index, text ->
+                        val matcher = AppPattern.imgPattern.matcher(text)
+                        while (matcher.find()) {
+                            matcher.group(1)?.let {
+                                val src = NetworkUtils.getAbsoluteURL(chapter.url, it)
+                                srcList.add(Triple(chapter.title, index, src))
+                            }
                         }
                     }
+                    append.invoke("\n\n$content1", srcList)
+                } else {
+                    append.invoke("\n\n$content1", null)
                 }
-                append.invoke("\n\n$content1", srcList)
             }
         }
     }
diff --git a/app/src/main/java/io/legado/app/ui/book/read/page/provider/ImageProvider.kt b/app/src/main/java/io/legado/app/ui/book/read/page/provider/ImageProvider.kt
index 7ecfe83f5..df88392a1 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/page/provider/ImageProvider.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/page/provider/ImageProvider.kt
@@ -11,6 +11,7 @@ import io.legado.app.data.entities.BookSource
 import io.legado.app.exception.NoStackTraceException
 import io.legado.app.help.BookHelp
 import io.legado.app.help.coroutine.Coroutine
+import io.legado.app.help.config.AppConfig
 import io.legado.app.model.localBook.EpubFile
 import io.legado.app.utils.BitmapUtils
 import io.legado.app.utils.FileUtils
@@ -32,8 +33,7 @@ object ImageProvider {
      *缓存bitmap LruCache实现
      */
     private const val M = 1024 * 1024
-    private val cacheSize =
-        max(50 * M, min(100 * M, (Runtime.getRuntime().maxMemory() / 8).toInt()))
+    private val cacheSize = AppConfig.bitmapCacheSize * M
     val bitmapLruCache = object : LruCache<String, Bitmap>(cacheSize) {
 
         override fun sizeOf(key: String, bitmap: Bitmap): Int {
diff --git a/app/src/main/java/io/legado/app/ui/config/OtherConfigFragment.kt b/app/src/main/java/io/legado/app/ui/config/OtherConfigFragment.kt
index 5ffdede56..03ea90822 100644
--- a/app/src/main/java/io/legado/app/ui/config/OtherConfigFragment.kt
+++ b/app/src/main/java/io/legado/app/ui/config/OtherConfigFragment.kt
@@ -56,6 +56,7 @@ class OtherConfigFragment : PreferenceFragment(),
             upPreferenceSummary(PreferKey.defaultBookTreeUri, it)
         }
         upPreferenceSummary(PreferKey.checkSource, CheckSource.summary)
+        upPreferenceSummary(PreferKey.bitmapCacheSize, AppConfig.bitmapCacheSize.toString())
     }
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
@@ -104,6 +105,17 @@ class OtherConfigFragment : PreferenceFragment(),
             PreferKey.cleanCache -> clearCache()
             PreferKey.uploadRule -> showDialogFragment<DirectLinkUploadConfig>()
             PreferKey.checkSource -> showDialogFragment<CheckSourceConfig>()
+            PreferKey.bitmapCacheSize -> {
+                toastOnUi(R.string.restart_to_apply_changes)
+                NumberPickerDialog(requireContext())
+                    .setTitle(getString(R.string.bitmap_cache_size))
+                    .setMaxValue(9999)
+                    .setMinValue(1)
+                    .setValue(AppConfig.bitmapCacheSize)
+                    .show {
+                        AppConfig.bitmapCacheSize = it
+                    }
+            }
         }
         return super.onPreferenceTreeClick(preference)
     }
@@ -141,6 +153,9 @@ class OtherConfigFragment : PreferenceFragment(),
             PreferKey.checkSource -> listView.post {
                 upPreferenceSummary(PreferKey.checkSource, CheckSource.summary)
             }
+            PreferKey.bitmapCacheSize -> {
+                upPreferenceSummary(key, AppConfig.bitmapCacheSize.toString())
+            }
         }
     }
 
@@ -151,6 +166,7 @@ class OtherConfigFragment : PreferenceFragment(),
                 getString(R.string.pre_download_s, value)
             PreferKey.threadCount -> preference.summary = getString(R.string.threads_num, value)
             PreferKey.webPort -> preference.summary = getString(R.string.web_port_summary, value)
+            PreferKey.bitmapCacheSize -> preference.summary = getString(R.string.bitmap_cache_size_summary, value)
             else -> if (preference is ListPreference) {
                 val index = preference.findIndexOfValue(value)
                 // Set the summary to reflect the new value.
diff --git a/app/src/main/res/menu/book_cache.xml b/app/src/main/res/menu/book_cache.xml
index f76ab76f8..a60ffc19e 100644
--- a/app/src/main/res/menu/book_cache.xml
+++ b/app/src/main/res/menu/book_cache.xml
@@ -36,12 +36,19 @@
         android:title="@string/export_to_web_dav"
         android:checkable="true"
         app:showAsAction="never" />
+
     <item
         android:id="@+id/menu_export_no_chapter_name"
         android:title="@string/export_no_chapter_name"
         android:checkable="true"
         app:showAsAction="never" />
 
+    <item
+        android:id="@+id/menu_export_pics_file"
+        android:title="@string/export_pics_file"
+        android:checkable="true"
+        app:showAsAction="never" />
+
     <item
         android:id="@+id/menu_export_folder"
         android:title="@string/export_folder"
diff --git a/app/src/main/res/values-es-rES/strings.xml b/app/src/main/res/values-es-rES/strings.xml
index f463d99ab..787fd4a0b 100644
--- a/app/src/main/res/values-es-rES/strings.xml
+++ b/app/src/main/res/values-es-rES/strings.xml
@@ -989,5 +989,10 @@
     <string name="download_book_fail">Download Fail</string>
     <string name="upload_to_remote">Upload</string>
     <string name="add_remote_book">WebDavBook</string>
+    <string name="bitmap_cache_size_summary">Current cache max size %1$s MB</string>
+    <string name="bitmap_cache_size">bitmap cache size</string>
+    <string name="restart_to_apply_changes">Restart to apply changes</string>
+    <string name="export_pics_file">Export Picture Files</string>
     <!-- string end -->
+
 </resources>
diff --git a/app/src/main/res/values-ja-rJP/strings.xml b/app/src/main/res/values-ja-rJP/strings.xml
index cfc19c003..c8bcb70fb 100644
--- a/app/src/main/res/values-ja-rJP/strings.xml
+++ b/app/src/main/res/values-ja-rJP/strings.xml
@@ -992,5 +992,11 @@
     <string name="download_book_fail">Download Fail</string>
     <string name="upload_to_remote">Upload</string>
     <string name="add_remote_book">WebDavBook</string>
+    <string name="bitmap_cache_size_summary">Current cache max size %1$s MB</string>
+    <string name="bitmap_cache_size">bitmap cache size</string>
+    <string name="restart_to_apply_changes">Restart to apply changes</string>
+    <string name="export_pics_file">Export Picture Files</string>
     <!-- string end -->
+
+
 </resources>
diff --git a/app/src/main/res/values-pt-rBR/strings.xml b/app/src/main/res/values-pt-rBR/strings.xml
index 36bfb527d..ba19a85e7 100644
--- a/app/src/main/res/values-pt-rBR/strings.xml
+++ b/app/src/main/res/values-pt-rBR/strings.xml
@@ -992,5 +992,10 @@
     <string name="download_book_fail">Download Fail</string>
     <string name="upload_to_remote">Upload</string>
     <string name="add_remote_book">WebDavBook</string>
+    <string name="bitmap_cache_size_summary">Current cache max size %1$s MB</string>
+    <string name="bitmap_cache_size">bitmap cache size</string>
+    <string name="restart_to_apply_changes">Restart to apply changes</string>
+    <string name="export_pics_file">Export Picture Files</string>
     <!-- string end -->
+
 </resources>
diff --git a/app/src/main/res/values-zh-rHK/strings.xml b/app/src/main/res/values-zh-rHK/strings.xml
index 7d40929fb..dcd42e23c 100644
--- a/app/src/main/res/values-zh-rHK/strings.xml
+++ b/app/src/main/res/values-zh-rHK/strings.xml
@@ -989,5 +989,10 @@
     <string name="download_book_fail">Download Fail</string>
     <string name="upload_to_remote">Upload</string>
     <string name="add_remote_book">WebDav书籍</string>
+    <string name="bitmap_cache_size_summary">当前最大缓存 %1$s MB</string>
+    <string name="bitmap_cache_size">图片绘制缓存</string>
+    <string name="restart_to_apply_changes">重启应用更改</string>
+    <string name="export_pics_file">TXT导出图片</string>
     <!-- string end -->
+
 </resources>
diff --git a/app/src/main/res/values-zh-rTW/strings.xml b/app/src/main/res/values-zh-rTW/strings.xml
index 134e22b90..efd3fc28b 100644
--- a/app/src/main/res/values-zh-rTW/strings.xml
+++ b/app/src/main/res/values-zh-rTW/strings.xml
@@ -991,5 +991,10 @@
     <string name="download_book_fail">Download Fail</string>
     <string name="upload_to_remote">Upload</string>
     <string name="add_remote_book">WebDav书籍</string>
+    <string name="bitmap_cache_size_summary">当前最大缓存 %1$s MB</string>
+    <string name="bitmap_cache_size">图片绘制缓存</string>
+    <string name="restart_to_apply_changes">重启应用更改</string>
+    <string name="export_pics_file">TXT导出图片</string>
     <!-- string end -->
+
 </resources>
diff --git a/app/src/main/res/values-zh/strings.xml b/app/src/main/res/values-zh/strings.xml
index 5a6c7beeb..e79b3aa83 100644
--- a/app/src/main/res/values-zh/strings.xml
+++ b/app/src/main/res/values-zh/strings.xml
@@ -991,5 +991,10 @@
     <string name="download_book_fail">Download Fail</string>
     <string name="upload_to_remote">上传WebDav</string>
     <string name="add_remote_book">WebDav书籍</string>
+    <string name="bitmap_cache_size_summary">当前最大缓存 %1$s MB</string>
+    <string name="bitmap_cache_size">图片绘制缓存</string>
+    <string name="restart_to_apply_changes">重启应用更改</string>
+    <string name="export_pics_file">TXT导出图片</string>
     <!-- string end -->
+
 </resources>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 1a9f867cf..49014f91b 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -992,5 +992,11 @@
     <string name="download_book_fail">Download Fail</string>
     <string name="upload_to_remote">Upload</string>
     <string name="add_remote_book">WebDavBook</string>
+    <string name="bitmap_cache_size_summary">Current cache max size %1$s MB</string>
+    <string name="bitmap_cache_size">bitmap cache size</string>
+    <string name="restart_to_apply_changes">Restart to apply changes</string>
+    <string name="export_pics_file">Export Picture Files</string>
     <!-- string end -->
+
+
 </resources>
diff --git a/app/src/main/res/xml/pref_config_other.xml b/app/src/main/res/xml/pref_config_other.xml
index 931deb5f9..8da45d5a6 100644
--- a/app/src/main/res/xml/pref_config_other.xml
+++ b/app/src/main/res/xml/pref_config_other.xml
@@ -75,12 +75,18 @@
             android:key="Cronet"
             android:summary="@string/pref_cronet_summary"
             android:title="Cronet" />
+
         <io.legado.app.lib.prefs.SwitchPreference
             android:defaultValue="false"
             android:key="antiAlias"
             android:summary="@string/pref_anti_alias_summary"
             android:title="@string/anti_alias" />
 
+        <io.legado.app.lib.prefs.Preference
+            android:key="bitmapCacheSize"
+            android:summary="@string/bitmap_cache_size_summary"
+            android:title="@string/bitmap_cache_size" />
+
         <io.legado.app.lib.prefs.Preference
             android:key="preDownloadNum"
             android:summary="@string/pre_download_s"