diff --git a/app/src/main/java/eu/kanade/tachiyomi/util/view/ImageViewExtensions.kt b/app/src/main/java/eu/kanade/tachiyomi/util/view/ImageViewExtensions.kt
deleted file mode 100644
index dfeb7281e6..0000000000
--- a/app/src/main/java/eu/kanade/tachiyomi/util/view/ImageViewExtensions.kt
+++ /dev/null
@@ -1,21 +0,0 @@
-package eu.kanade.tachiyomi.util.view
-
-import android.widget.ImageView
-import androidx.annotation.AttrRes
-import androidx.annotation.DrawableRes
-import androidx.appcompat.content.res.AppCompatResources
-import eu.kanade.tachiyomi.util.system.getResourceColor
-
-/**
- * Set a vector on a [ImageView].
- *
- * @param drawable id of drawable resource
- */
-fun ImageView.setVectorCompat(@DrawableRes drawable: Int, @AttrRes tint: Int? = null) {
-    val vector = AppCompatResources.getDrawable(context, drawable)
-    if (tint != null) {
-        vector?.mutate()
-        vector?.setTint(context.getResourceColor(tint))
-    }
-    setImageDrawable(vector)
-}
diff --git a/app/src/main/java/eu/kanade/tachiyomi/util/view/ViewGroupExtensions.kt b/app/src/main/java/eu/kanade/tachiyomi/util/view/ViewGroupExtensions.kt
deleted file mode 100644
index 64c71200a0..0000000000
--- a/app/src/main/java/eu/kanade/tachiyomi/util/view/ViewGroupExtensions.kt
+++ /dev/null
@@ -1,15 +0,0 @@
-package eu.kanade.tachiyomi.util.view
-
-import android.view.LayoutInflater
-import android.view.View
-import android.view.ViewGroup
-import androidx.annotation.LayoutRes
-
-/**
- * Extension method to inflate a view directly from its parent.
- * @param layout the layout to inflate.
- * @param attachToRoot whether to attach the view to the root or not. Defaults to false.
- */
-fun ViewGroup.inflate(@LayoutRes layout: Int, attachToRoot: Boolean = false): View {
-    return LayoutInflater.from(context).inflate(layout, this, attachToRoot)
-}
diff --git a/app/src/main/java/eu/kanade/tachiyomi/widget/OutlineSpan.kt b/app/src/main/java/eu/kanade/tachiyomi/widget/OutlineSpan.kt
deleted file mode 100644
index e5125a28c1..0000000000
--- a/app/src/main/java/eu/kanade/tachiyomi/widget/OutlineSpan.kt
+++ /dev/null
@@ -1,56 +0,0 @@
-package eu.kanade.tachiyomi.widget
-
-import android.graphics.Canvas
-import android.graphics.Paint
-import android.text.style.ReplacementSpan
-import androidx.annotation.ColorInt
-import androidx.annotation.Dimension
-
-/**
- * Source: https://github.com/santaevpavel
- *
- * A class that draws the outlines of a text when given a stroke color and stroke width.
- */
-class OutlineSpan(
-    @ColorInt private val strokeColor: Int,
-    @Dimension private val strokeWidth: Float,
-) : ReplacementSpan() {
-
-    override fun getSize(
-        paint: Paint,
-        text: CharSequence,
-        start: Int,
-        end: Int,
-        fm: Paint.FontMetricsInt?,
-    ): Int {
-        return paint.measureText(text.toString().substring(start until end)).toInt()
-    }
-
-    override fun draw(
-        canvas: Canvas,
-        text: CharSequence,
-        start: Int,
-        end: Int,
-        x: Float,
-        top: Int,
-        y: Int,
-        bottom: Int,
-        paint: Paint,
-    ) {
-        val originTextColor = paint.color
-
-        paint.apply {
-            color = strokeColor
-            style = Paint.Style.STROKE
-            this.strokeWidth = this@OutlineSpan.strokeWidth
-        }
-        canvas.drawText(text, start, end, x, y.toFloat(), paint)
-
-        paint.apply {
-            color = originTextColor
-            style = Paint.Style.FILL
-        }
-
-        canvas.drawText(text, start, end, x, y.toFloat(), paint)
-    }
-}
diff --git a/app/src/main/java/eu/kanade/tachiyomi/widget/TriState.kt b/app/src/main/java/eu/kanade/tachiyomi/widget/TriState.kt
deleted file mode 100644
index 6e2cfa9086..0000000000
--- a/app/src/main/java/eu/kanade/tachiyomi/widget/TriState.kt
+++ /dev/null
@@ -1,13 +0,0 @@
-package eu.kanade.tachiyomi.widget
-
-import eu.kanade.tachiyomi.source.model.Filter
-import tachiyomi.domain.manga.model.TriStateFilter
-
-fun Int.toTriStateFilter(): TriStateFilter {
-    return when (this) {
-        Filter.TriState.STATE_IGNORE -> TriStateFilter.DISABLED
-        Filter.TriState.STATE_INCLUDE -> TriStateFilter.ENABLED_IS
-        Filter.TriState.STATE_EXCLUDE -> TriStateFilter.ENABLED_NOT
-        else -> throw IllegalStateException("Unknown TriState state: $this")
-    }
-}