diff --git a/app/src/main/java/eu/kanade/tachiyomi/data/track/anilist/AnilistUtils.kt b/app/src/main/java/eu/kanade/tachiyomi/data/track/anilist/AnilistUtils.kt
index 1a6f02dea..3fc94f144 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/data/track/anilist/AnilistUtils.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/data/track/anilist/AnilistUtils.kt
@@ -4,7 +4,7 @@ import eu.kanade.domain.track.service.TrackPreferences
 import eu.kanade.tachiyomi.data.database.models.Track
 import tachiyomi.domain.track.model.Track as DomainTrack
 
-fun Track.toApiStatus() = when (status) {
+internal fun Track.toApiStatus() = when (status) {
     Anilist.READING -> "CURRENT"
     Anilist.COMPLETED -> "COMPLETED"
     Anilist.ON_HOLD -> "PAUSED"
@@ -14,7 +14,7 @@ fun Track.toApiStatus() = when (status) {
     else -> throw NotImplementedError("Unknown status: $status")
 }
 
-fun DomainTrack.toApiScore(preferences: TrackPreferences): String = when (preferences.anilistScoreType.get()) {
+internal fun DomainTrack.toApiScore(preferences: TrackPreferences): String = when (preferences.anilistScoreType.get()) {
     // 10 point
     "POINT_10" -> (score.toInt() / 10).toString()
     // 100 point
diff --git a/app/src/main/java/eu/kanade/tachiyomi/data/track/bangumi/BangumiUtils.kt b/app/src/main/java/eu/kanade/tachiyomi/data/track/bangumi/BangumiUtils.kt
index d8b56799f..0405bbf95 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/data/track/bangumi/BangumiUtils.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/data/track/bangumi/BangumiUtils.kt
@@ -2,7 +2,7 @@ package eu.kanade.tachiyomi.data.track.bangumi
 
 import eu.kanade.tachiyomi.data.database.models.Track
 
-fun Track.toApiStatus() = when (status) {
+internal fun Track.toApiStatus() = when (status) {
     Bangumi.PLAN_TO_READ -> 1
     Bangumi.COMPLETED -> 2
     Bangumi.READING -> 3
diff --git a/app/src/main/java/eu/kanade/tachiyomi/data/track/hikka/HikkaUtils.kt b/app/src/main/java/eu/kanade/tachiyomi/data/track/hikka/HikkaUtils.kt
index a31b692c9..e917b6aa8 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/data/track/hikka/HikkaUtils.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/data/track/hikka/HikkaUtils.kt
@@ -3,7 +3,7 @@ package eu.kanade.tachiyomi.data.track.hikka
 import eu.kanade.tachiyomi.data.database.models.Track
 import java.util.UUID
 
-fun Track.toApiStatus() = when (status) {
+internal fun Track.toApiStatus() = when (status) {
     Hikka.READING -> "reading"
     Hikka.COMPLETED -> "completed"
     Hikka.ON_HOLD -> "on_hold"
@@ -13,7 +13,7 @@ fun Track.toApiStatus() = when (status) {
     else -> throw NotImplementedError("Hikka: Unknown status: $status")
 }
 
-fun toTrackStatus(status: String) = when (status) {
+internal fun toTrackStatus(status: String) = when (status) {
     "reading" -> Hikka.READING
     "completed" -> Hikka.COMPLETED
     "on_hold" -> Hikka.ON_HOLD
@@ -22,7 +22,7 @@ fun toTrackStatus(status: String) = when (status) {
     else -> throw NotImplementedError("Hikka: Unknown status: $status")
 }
 
-fun stringToNumber(input: String): Long {
+internal fun stringToNumber(input: String): Long {
     val uuid = UUID.nameUUIDFromBytes(input.toByteArray())
     return uuid.mostSignificantBits and Long.MAX_VALUE
 }
diff --git a/app/src/main/java/eu/kanade/tachiyomi/data/track/kitsu/KitsuUtils.kt b/app/src/main/java/eu/kanade/tachiyomi/data/track/kitsu/KitsuUtils.kt
index 277624424..401a193e6 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/data/track/kitsu/KitsuUtils.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/data/track/kitsu/KitsuUtils.kt
@@ -2,7 +2,7 @@ package eu.kanade.tachiyomi.data.track.kitsu
 
 import eu.kanade.tachiyomi.data.database.models.Track
 
-fun Track.toKitsuApiStatus() = when (status) {
+internal fun Track.toKitsuApiStatus() = when (status) {
     Kitsu.READING -> "CURRENT"
     Kitsu.COMPLETED -> "COMPLETED"
     Kitsu.ON_HOLD -> "ON_HOLD"
@@ -11,7 +11,7 @@ fun Track.toKitsuApiStatus() = when (status) {
     else -> throw Exception("Unknown status: $status")
 }
 
-fun String.toKitsuLocalStatus() = when (this) {
+internal fun String.toKitsuLocalStatus() = when (this) {
     "CURRENT" -> Kitsu.READING
     "COMPLETED" -> Kitsu.COMPLETED
     "ON_HOLD" -> Kitsu.ON_HOLD
diff --git a/app/src/main/java/eu/kanade/tachiyomi/data/track/mangabaka/MangaBakaUtils.kt b/app/src/main/java/eu/kanade/tachiyomi/data/track/mangabaka/MangaBakaUtils.kt
index 74b7df018..db41ac9f9 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/data/track/mangabaka/MangaBakaUtils.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/data/track/mangabaka/MangaBakaUtils.kt
@@ -2,7 +2,7 @@ package eu.kanade.tachiyomi.data.track.mangabaka
 
 import eu.kanade.tachiyomi.data.database.models.Track
 
-fun Track.toApiStatus() = when (status) {
+internal fun Track.toApiStatus() = when (status) {
     MangaBaka.CONSIDERING -> "considering"
     MangaBaka.COMPLETED -> "completed"
     MangaBaka.DROPPED -> "dropped"
diff --git a/app/src/main/java/eu/kanade/tachiyomi/data/track/mangaupdates/MangaUpdates.kt b/app/src/main/java/eu/kanade/tachiyomi/data/track/mangaupdates/MangaUpdates.kt
index 68e7643e2..3e4f23814 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/data/track/mangaupdates/MangaUpdates.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/data/track/mangaupdates/MangaUpdates.kt
@@ -7,8 +7,6 @@ import eu.kanade.tachiyomi.data.track.BaseTracker
 import eu.kanade.tachiyomi.data.track.DeletableTracker
 import eu.kanade.tachiyomi.data.track.mangaupdates.dto.MUListItem
 import eu.kanade.tachiyomi.data.track.mangaupdates.dto.MURating
-import eu.kanade.tachiyomi.data.track.mangaupdates.dto.copyTo
-import eu.kanade.tachiyomi.data.track.mangaupdates.dto.toTrackSearch
 import eu.kanade.tachiyomi.data.track.model.TrackSearch
 import tachiyomi.i18n.MR
 import tachiyomi.domain.track.model.Track as DomainTrack
diff --git a/app/src/main/java/eu/kanade/tachiyomi/data/track/mangaupdates/dto/MUListItem.kt b/app/src/main/java/eu/kanade/tachiyomi/data/track/mangaupdates/dto/MUListItem.kt
index b406fd56e..f9fd12090 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/data/track/mangaupdates/dto/MUListItem.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/data/track/mangaupdates/dto/MUListItem.kt
@@ -12,11 +12,11 @@ data class MUListItem(
     val listId: Long? = null,
     val status: MUStatus? = null,
     val priority: Int? = null,
-)
-
-fun MUListItem.copyTo(track: Track): Track {
-    return track.apply {
-        this.status = listId ?: READING_LIST
-        this.last_chapter_read = this@copyTo.status?.chapter?.toDouble() ?: 0.0
+) {
+    fun copyTo(track: Track): Track {
+        return track.apply {
+            this.status = listId ?: READING_LIST
+            this.last_chapter_read = this@MUListItem.status?.chapter?.toDouble() ?: 0.0
+        }
     }
 }
diff --git a/app/src/main/java/eu/kanade/tachiyomi/data/track/mangaupdates/dto/MURating.kt b/app/src/main/java/eu/kanade/tachiyomi/data/track/mangaupdates/dto/MURating.kt
index eeca1bbb7..ecde6a6be 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/data/track/mangaupdates/dto/MURating.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/data/track/mangaupdates/dto/MURating.kt
@@ -6,10 +6,10 @@ import kotlinx.serialization.Serializable
 @Serializable
 data class MURating(
     val rating: Double? = null,
-)
-
-fun MURating.copyTo(track: Track): Track {
-    return track.apply {
-        this.score = rating ?: 0.0
+) {
+    fun copyTo(track: Track): Track {
+        return track.apply {
+            this.score = rating ?: 0.0
+        }
     }
 }
diff --git a/app/src/main/java/eu/kanade/tachiyomi/data/track/mangaupdates/dto/MURecord.kt b/app/src/main/java/eu/kanade/tachiyomi/data/track/mangaupdates/dto/MURecord.kt
index a7d1e2363..8a4dbf2bb 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/data/track/mangaupdates/dto/MURecord.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/data/track/mangaupdates/dto/MURecord.kt
@@ -22,21 +22,21 @@ data class MURecord(
     @SerialName("latest_chapter")
     val latestChapter: Int? = null,
     val authors: List<MUAuthor> = emptyList(),
-)
-
-fun MURecord.toTrackSearch(id: Long): TrackSearch {
-    return TrackSearch.create(id).apply {
-        remote_id = this@toTrackSearch.seriesId ?: 0L
-        title = this@toTrackSearch.title?.htmlDecode() ?: ""
-        total_chapters = 0
-        cover_url = this@toTrackSearch.image?.url?.original ?: ""
-        summary = this@toTrackSearch.description?.htmlDecode() ?: ""
-        tracking_url = this@toTrackSearch.url ?: ""
-        publishing_status = ""
-        publishing_type = this@toTrackSearch.type.toString()
-        start_date = this@toTrackSearch.year.toString()
-        score = this@toTrackSearch.bayesianRating?.takeIf { it > 0 } ?: -1.0
-        authors = this@toTrackSearch.authors.filter { it.type == "Author" }.map { it.name }
-        artists = this@toTrackSearch.authors.filter { it.type == "Artist" }.map { it.name }
+) {
+    fun toTrackSearch(id: Long): TrackSearch {
+        return TrackSearch.create(id).apply {
+            remote_id = this@MURecord.seriesId ?: 0L
+            title = this@MURecord.title?.htmlDecode() ?: ""
+            total_chapters = 0
+            cover_url = this@MURecord.image?.url?.original ?: ""
+            summary = this@MURecord.description?.htmlDecode() ?: ""
+            tracking_url = this@MURecord.url ?: ""
+            publishing_status = ""
+            publishing_type = this@MURecord.type.toString()
+            start_date = this@MURecord.year.toString()
+            score = this@MURecord.bayesianRating?.takeIf { it > 0 } ?: -1.0
+            authors = this@MURecord.authors.filter { it.type == "Author" }.map { it.name }
+            artists = this@MURecord.authors.filter { it.type == "Artist" }.map { it.name }
+        }
     }
 }
diff --git a/app/src/main/java/eu/kanade/tachiyomi/data/track/myanimelist/MyAnimeListUtils.kt b/app/src/main/java/eu/kanade/tachiyomi/data/track/myanimelist/MyAnimeListUtils.kt
index 593111a7d..88c053d48 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/data/track/myanimelist/MyAnimeListUtils.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/data/track/myanimelist/MyAnimeListUtils.kt
@@ -2,7 +2,7 @@ package eu.kanade.tachiyomi.data.track.myanimelist
 
 import eu.kanade.tachiyomi.data.database.models.Track
 
-fun Track.toMyAnimeListStatus() = when (status) {
+internal fun Track.toMyAnimeListStatus() = when (status) {
     MyAnimeList.READING -> "reading"
     MyAnimeList.COMPLETED -> "completed"
     MyAnimeList.ON_HOLD -> "on_hold"
@@ -12,7 +12,7 @@ fun Track.toMyAnimeListStatus() = when (status) {
     else -> null
 }
 
-fun getStatus(status: String?) = when (status) {
+internal fun getStatus(status: String?) = when (status) {
     "reading" -> MyAnimeList.READING
     "completed" -> MyAnimeList.COMPLETED
     "on_hold" -> MyAnimeList.ON_HOLD
diff --git a/app/src/main/java/eu/kanade/tachiyomi/data/track/shikimori/ShikimoriUtils.kt b/app/src/main/java/eu/kanade/tachiyomi/data/track/shikimori/ShikimoriUtils.kt
index fe59f6e80..234af7587 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/data/track/shikimori/ShikimoriUtils.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/data/track/shikimori/ShikimoriUtils.kt
@@ -2,7 +2,7 @@ package eu.kanade.tachiyomi.data.track.shikimori
 
 import eu.kanade.tachiyomi.data.database.models.Track
 
-fun Track.toShikimoriStatus() = when (status) {
+internal fun Track.toShikimoriStatus() = when (status) {
     Shikimori.READING -> "watching"
     Shikimori.COMPLETED -> "completed"
     Shikimori.ON_HOLD -> "on_hold"
@@ -12,7 +12,7 @@ fun Track.toShikimoriStatus() = when (status) {
     else -> throw NotImplementedError("Unknown status: $status")
 }
 
-fun toTrackStatus(status: String) = when (status) {
+internal fun toTrackStatus(status: String) = when (status) {
     "watching" -> Shikimori.READING
     "completed" -> Shikimori.COMPLETED
     "on_hold" -> Shikimori.ON_HOLD