diff --git a/app/src/main/cpp/archive.c b/app/src/main/cpp/archive.c
index 209adc2e7..7508f030b 100644
--- a/app/src/main/cpp/archive.c
+++ b/app/src/main/cpp/archive.c
@@ -98,6 +98,20 @@ static inline int filename_is_playable_file(const char *name) {
     return false;
 }
 
+static inline const char *archive_entry_pathname2(struct archive_entry *entry) {
+    const char *name = archive_entry_pathname_utf8(entry);
+    return name ? name : archive_entry_pathname(entry);
+}
+
+static inline bool archive_entry_is_file(struct archive_entry *entry) {
+    return archive_entry_filetype(entry) == AE_IFREG;
+}
+
+static inline bool archive_entry_is_playable(struct archive_entry *entry) {
+    return archive_entry_is_file(entry) &&
+           filename_is_playable_file(archive_entry_pathname2(entry));
+}
+
 static inline int compare_entries(const void *a, const void *b) {
     const char *fa = ((entry *) a)->filename;
     const char *fb = ((entry *) b)->filename;
@@ -107,8 +121,8 @@ static inline int compare_entries(const void *a, const void *b) {
 static long archive_map_entries_index(archive_ctx *ctx) {
     long count = 0;
     while (archive_read_next_header(ctx->arc, &ctx->entry) == ARCHIVE_OK) {
-        const char *name = archive_entry_pathname_utf8(ctx->entry);
-        if (filename_is_playable_file(name)) {
+        const char *name = archive_entry_pathname2(ctx->entry);
+        if (archive_entry_is_file(ctx->entry) && filename_is_playable_file(name)) {
             entries[count].filename = strdup(name);
             entries[count].index = count;
             entries[count].size = archive_entry_size(ctx->entry);
@@ -166,7 +180,7 @@ static void mempool_release_pages(void *addr, size_t size) {
 static long archive_list_all_entries(archive_ctx *ctx) {
     long count = 0;
     while (archive_read_next_header(ctx->arc, &ctx->entry) == ARCHIVE_OK)
-        if (filename_is_playable_file(archive_entry_pathname_utf8(ctx->entry)))
+        if (archive_entry_is_playable(ctx->entry))
             count++;
     if (!count)
         LOGE("%s", archive_error_string(ctx->arc));
@@ -214,7 +228,7 @@ static int archive_alloc_ctx(archive_ctx **ctxptr) {
 
 static int archive_skip_to_index(archive_ctx *ctx, int index) {
     while (archive_read_next_header(ctx->arc, &ctx->entry) == ARCHIVE_OK) {
-        if (!filename_is_playable_file(archive_entry_pathname_utf8(ctx->entry)))
+        if (!archive_entry_is_playable(ctx->entry))
             continue;
         if (ctx->next_index++ == index) {
             return ctx->next_index - 1;
@@ -433,7 +447,7 @@ Java_com_hippo_ehviewer_jni_ArchiveKt_providePassword(JNIEnv *env, jclass thiz,
     archive_alloc_ctx(&ctx);
     void *tmpBuf = alloca(4096);
     while (archive_read_next_header(ctx->arc, &entry) == ARCHIVE_OK) {
-        if (!filename_is_playable_file(archive_entry_pathname_utf8(entry)))
+        if (!archive_entry_is_playable(entry))
             continue;
         if (!archive_entry_is_encrypted(entry))
             continue;
@@ -448,22 +462,15 @@ Java_com_hippo_ehviewer_jni_ArchiveKt_providePassword(JNIEnv *env, jclass thiz,
 }
 
 JNIEXPORT jstring JNICALL
-Java_com_hippo_ehviewer_jni_ArchiveKt_getFilename(JNIEnv *env, jclass thiz,
+Java_com_hippo_ehviewer_jni_ArchiveKt_getExtension(JNIEnv *env, jclass thiz,
                                                                 jint index) {
     EH_UNUSED(env);
     EH_UNUSED(thiz);
-    index = entries[index].index;
-    archive_ctx *ctx = NULL;
-    int ret;
-    ret = archive_get_ctx(&ctx, index);
-    if (ret)
-        return NULL;
-    jstring str = (*env)->NewStringUTF(env, archive_entry_pathname_utf8(ctx->entry));
-    ctx->using = 0;
-    return str;
+    const char *ext = strrchr(entries[index].filename, '.') + 1;
+    return (*env)->NewStringUTF(env, ext);
 }
 
-JNIEXPORT void JNICALL
+JNIEXPORT jboolean JNICALL
 Java_com_hippo_ehviewer_jni_ArchiveKt_extractToFd(JNIEnv *env, jclass thiz,
                                                                 jint index, jint fd) {
     EH_UNUSED(env);
@@ -473,9 +480,10 @@ Java_com_hippo_ehviewer_jni_ArchiveKt_extractToFd(JNIEnv *env, jclass thiz,
     int ret;
     ret = archive_get_ctx(&ctx, index);
     if (!ret) {
-        archive_read_data_into_fd(ctx->arc, fd);
+        ret = archive_read_data_into_fd(ctx->arc, fd);
         ctx->using = 0;
     }
+    return ret == ARCHIVE_OK;
 }
 
 JNIEXPORT void JNICALL
diff --git a/app/src/main/kotlin/com/hippo/ehviewer/gallery/ArchivePageLoader.kt b/app/src/main/kotlin/com/hippo/ehviewer/gallery/ArchivePageLoader.kt
index d742a098f..da76f9f6b 100644
--- a/app/src/main/kotlin/com/hippo/ehviewer/gallery/ArchivePageLoader.kt
+++ b/app/src/main/kotlin/com/hippo/ehviewer/gallery/ArchivePageLoader.kt
@@ -23,7 +23,7 @@ import com.hippo.ehviewer.image.Image
 import com.hippo.ehviewer.jni.closeArchive
 import com.hippo.ehviewer.jni.extractToByteBuffer
 import com.hippo.ehviewer.jni.extractToFd
-import com.hippo.ehviewer.jni.getFilename
+import com.hippo.ehviewer.jni.getExtension
 import com.hippo.ehviewer.jni.needPassword
 import com.hippo.ehviewer.jni.openArchive
 import com.hippo.ehviewer.jni.providePassword
@@ -144,28 +144,25 @@ class ArchivePageLoader(private val file: UniFile, passwdProvider: PasswdProvide
         mJobMap[index]?.cancel()
     }
 
-    override fun getImageFilename(index: Int): String {
-        return FileUtils.getNameFromFilename(getImageFilenameWithExtension(index))!!
+    override val title by lazy {
+        FileUtils.getNameFromFilename(file.name)!!
     }
 
-    override fun getImageFilenameWithExtension(index: Int): String {
-        return FileUtils.sanitizeFilename(getFilename(index))
+    override fun getImageExtension(index: Int): String {
+        return getExtension(index)
     }
 
     override fun save(index: Int, file: UniFile): Boolean {
-        runCatching {
+        return runCatching {
             file.openFileDescriptor("w").use {
                 extractToFd(index, it.fd)
             }
-        }.onFailure {
+        }.getOrElse {
             it.printStackTrace()
-            return false
+            false
         }
-        return true
     }
 
-    override fun save(index: Int, dir: UniFile, filename: String) = (dir / filename).apply { save(index, this) }
-
     override fun preloadPages(pages: List<Int>, pair: Pair<Int, Int>) {}
 }
 
diff --git a/app/src/main/kotlin/com/hippo/ehviewer/gallery/EhPageLoader.kt b/app/src/main/kotlin/com/hippo/ehviewer/gallery/EhPageLoader.kt
index 791648c90..90df5af69 100644
--- a/app/src/main/kotlin/com/hippo/ehviewer/gallery/EhPageLoader.kt
+++ b/app/src/main/kotlin/com/hippo/ehviewer/gallery/EhPageLoader.kt
@@ -15,6 +15,7 @@
  */
 package com.hippo.ehviewer.gallery
 
+import com.hippo.ehviewer.client.EhUtils
 import com.hippo.ehviewer.client.data.GalleryInfo
 import com.hippo.ehviewer.image.Image
 import com.hippo.ehviewer.spider.SpiderQueen
@@ -23,7 +24,6 @@ import com.hippo.ehviewer.spider.SpiderQueen.Companion.releaseSpiderQueen
 import com.hippo.ehviewer.spider.SpiderQueen.OnSpiderListener
 import com.hippo.ehviewer.util.SimpleHandler
 import com.hippo.unifile.UniFile
-import java.util.Locale
 
 class EhPageLoader(private val mGalleryInfo: GalleryInfo) : PageLoader2(), OnSpiderListener {
     private lateinit var mSpiderQueen: SpiderQueen
@@ -44,29 +44,18 @@ class EhPageLoader(private val mGalleryInfo: GalleryInfo) : PageLoader2(), OnSpi
     override val startPage
         get() = mSpiderQueen.startPage
 
-    override fun getImageFilename(index: Int): String {
-        return String.format(
-            Locale.US,
-            "%d-%s-%08d",
-            mGalleryInfo.gid,
-            mGalleryInfo.token,
-            index + 1,
-        )
+    override val title by lazy {
+        EhUtils.getSuitableTitle(mGalleryInfo)
     }
 
-    override fun getImageFilenameWithExtension(index: Int): String {
-        val filename = getImageFilename(index)
-        return mSpiderQueen.getExtension(index)?.let { "$filename.$it" } ?: filename
+    override fun getImageExtension(index: Int): String {
+        return mSpiderQueen.getExtension(index)!!
     }
 
     override fun save(index: Int, file: UniFile): Boolean {
         return mSpiderQueen.save(index, file)
     }
 
-    override fun save(index: Int, dir: UniFile, filename: String): UniFile? {
-        return mSpiderQueen.save(index, dir, filename)
-    }
-
     override fun putStartPage(page: Int) {
         mSpiderQueen.putStartPage(page)
     }
diff --git a/app/src/main/kotlin/com/hippo/ehviewer/gallery/PageLoader2.kt b/app/src/main/kotlin/com/hippo/ehviewer/gallery/PageLoader2.kt
index 140fffd0c..3db556479 100644
--- a/app/src/main/kotlin/com/hippo/ehviewer/gallery/PageLoader2.kt
+++ b/app/src/main/kotlin/com/hippo/ehviewer/gallery/PageLoader2.kt
@@ -24,19 +24,18 @@ abstract class PageLoader2 : PageLoader() {
 
     open fun putStartPage(page: Int) {}
 
-    /**
-     * @return without extension
-     */
-    abstract fun getImageFilename(index: Int): String
+    protected abstract val title: String
+
+    protected abstract fun getImageExtension(index: Int): String
+
+    fun getImageFilename(index: Int): String {
+        return "$title - ${index + 1}.${getImageExtension(index)}"
+    }
 
-    /**
-     * @return with extension
-     */
-    abstract fun getImageFilenameWithExtension(index: Int): String
     abstract fun save(index: Int, file: UniFile): Boolean
 
-    /**
-     * @param filename with extension
-     */
-    abstract fun save(index: Int, dir: UniFile, filename: String): UniFile?
+    fun saveToDir(index: Int, dir: UniFile): UniFile? {
+        val filename = getImageFilename(index)
+        return (dir / filename).takeIf { save(index, it) }
+    }
 }
diff --git a/app/src/main/kotlin/com/hippo/ehviewer/jni/Archive.kt b/app/src/main/kotlin/com/hippo/ehviewer/jni/Archive.kt
index f5b5b83a7..3abe38354 100644
--- a/app/src/main/kotlin/com/hippo/ehviewer/jni/Archive.kt
+++ b/app/src/main/kotlin/com/hippo/ehviewer/jni/Archive.kt
@@ -5,8 +5,8 @@ import java.nio.ByteBuffer
 external fun releaseByteBuffer(buffer: ByteBuffer)
 external fun openArchive(fd: Int, size: Long): Int
 external fun extractToByteBuffer(index: Int): ByteBuffer?
-external fun extractToFd(index: Int, fd: Int)
-external fun getFilename(index: Int): String
+external fun extractToFd(index: Int, fd: Int): Boolean
+external fun getExtension(index: Int): String
 external fun needPassword(): Boolean
 external fun providePassword(str: String): Boolean
 external fun closeArchive()
diff --git a/app/src/main/kotlin/com/hippo/ehviewer/spider/SpiderQueen.kt b/app/src/main/kotlin/com/hippo/ehviewer/spider/SpiderQueen.kt
index ba8c65a3f..27a340ec4 100644
--- a/app/src/main/kotlin/com/hippo/ehviewer/spider/SpiderQueen.kt
+++ b/app/src/main/kotlin/com/hippo/ehviewer/spider/SpiderQueen.kt
@@ -309,12 +309,6 @@ class SpiderQueen private constructor(val galleryInfo: GalleryInfo) : CoroutineS
         }
     }
 
-    fun save(index: Int, dir: UniFile, filename: String): UniFile? {
-        val state = getPageState(index)
-        if (STATE_FINISHED != state) return null
-        return (dir / filename).takeIf { mSpiderDen.saveToUniFile(index, it) }
-    }
-
     fun getExtension(index: Int): String? {
         val state = getPageState(index)
         return if (STATE_FINISHED != state) {
diff --git a/app/src/main/kotlin/eu/kanade/tachiyomi/ui/reader/ReaderActivity.kt b/app/src/main/kotlin/eu/kanade/tachiyomi/ui/reader/ReaderActivity.kt
index 44711e9f2..ad22ce94c 100644
--- a/app/src/main/kotlin/eu/kanade/tachiyomi/ui/reader/ReaderActivity.kt
+++ b/app/src/main/kotlin/eu/kanade/tachiyomi/ui/reader/ReaderActivity.kt
@@ -384,11 +384,7 @@ class ReaderActivity : EhActivity() {
             Toast.makeText(this, R.string.error_cant_create_temp_file, Toast.LENGTH_SHORT).show()
             return
         }
-        val file = mGalleryProvider!!.save(
-            page,
-            dir.asUniFile(),
-            mGalleryProvider!!.getImageFilenameWithExtension(page),
-        )
+        val file = mGalleryProvider!!.saveToDir(page, dir.asUniFile())
         if (file == null) {
             Toast.makeText(this, R.string.error_cant_save_image, Toast.LENGTH_SHORT).show()
             return
@@ -399,12 +395,8 @@ class ReaderActivity : EhActivity() {
             return
         }
 
-        var mimeType = MimeTypeMap.getSingleton().getMimeTypeFromExtension(
-            MimeTypeMap.getFileExtensionFromUrl(filename),
-        )
-        if (mimeType.isNullOrEmpty()) {
-            mimeType = "image/jpeg"
-        }
+        val extension = FileUtils.getExtensionFromFilename(filename)
+        val mimeType = MimeTypeMap.getSingleton().getMimeTypeFromExtension(extension) ?: "image/jpeg"
 
         val uri = FileProvider.getUriForFile(
             this,
@@ -442,11 +434,7 @@ class ReaderActivity : EhActivity() {
             Toast.makeText(this, R.string.error_cant_create_temp_file, Toast.LENGTH_SHORT).show()
             return
         }
-        val file = mGalleryProvider!!.save(
-            page,
-            dir.asUniFile(),
-            mGalleryProvider!!.getImageFilenameWithExtension(page),
-        )
+        val file = mGalleryProvider!!.saveToDir(page, dir.asUniFile())
         if (file == null) {
             Toast.makeText(this, R.string.error_cant_save_image, Toast.LENGTH_SHORT).show()
             return
@@ -474,13 +462,9 @@ class ReaderActivity : EhActivity() {
         lifecycleScope.launchUI {
             val granted = isAtLeastQ || requestPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE)
             if (granted) {
-                val filename = mGalleryProvider!!.getImageFilenameWithExtension(page)
-                var mimeType = MimeTypeMap.getSingleton().getMimeTypeFromExtension(
-                    MimeTypeMap.getFileExtensionFromUrl(filename),
-                )
-                if (mimeType.isNullOrEmpty()) {
-                    mimeType = "image/jpeg"
-                }
+                val filename = mGalleryProvider!!.getImageFilename(page)
+                val extension = FileUtils.getExtensionFromFilename(filename)
+                val mimeType = MimeTypeMap.getSingleton().getMimeTypeFromExtension(extension) ?: "image/jpeg"
 
                 val realPath: String
                 val resolver = contentResolver
@@ -547,11 +531,7 @@ class ReaderActivity : EhActivity() {
             Toast.makeText(this, R.string.error_cant_create_temp_file, Toast.LENGTH_SHORT).show()
             return
         }
-        val file = mGalleryProvider!!.save(
-            page,
-            dir.asUniFile(),
-            mGalleryProvider!!.getImageFilenameWithExtension(page),
-        )
+        val file = mGalleryProvider!!.saveToDir(page, dir.asUniFile())
         if (file == null) {
             Toast.makeText(this, R.string.error_cant_save_image, Toast.LENGTH_SHORT).show()
             return