diff --git a/core/data/src/main/java/ru/tech/imageresizershrinker/core/data/image/utils/SimpleCompressor.kt b/core/data/src/main/java/ru/tech/imageresizershrinker/core/data/image/utils/SimpleCompressor.kt
index 8d848d438f..897a832c9d 100644
--- a/core/data/src/main/java/ru/tech/imageresizershrinker/core/data/image/utils/SimpleCompressor.kt
+++ b/core/data/src/main/java/ru/tech/imageresizershrinker/core/data/image/utils/SimpleCompressor.kt
@@ -437,7 +437,7 @@ internal abstract class SimpleCompressor {
                 },
                 compressionOption = JxlCompressionOption.LOSSY,
                 quality = jxlQuality.qualityValue,
-                effort = JxlEffort.entries.first { it.ordinal == jxlQuality.effort },
+                effort = JxlEffort.entries.first { it.ordinal == jxlQuality.effort - 1 },
                 decodingSpeed = JxlDecodingSpeed.entries.first { it.ordinal == jxlQuality.speed }
             )
         }
@@ -462,7 +462,7 @@ internal abstract class SimpleCompressor {
                 },
                 compressionOption = JxlCompressionOption.LOSSLESS,
                 quality = 100,
-                effort = JxlEffort.entries.first { it.ordinal == jxlQuality.effort },
+                effort = JxlEffort.entries.first { it.ordinal == jxlQuality.effort - 1 },
                 decodingSpeed = JxlDecodingSpeed.entries.first { it.ordinal == jxlQuality.speed }
             )
         }
diff --git a/core/domain/src/main/kotlin/ru/tech/imageresizershrinker/core/domain/image/model/ImageFormat.kt b/core/domain/src/main/kotlin/ru/tech/imageresizershrinker/core/domain/image/model/ImageFormat.kt
index 284793da73..f988c643ed 100644
--- a/core/domain/src/main/kotlin/ru/tech/imageresizershrinker/core/domain/image/model/ImageFormat.kt
+++ b/core/domain/src/main/kotlin/ru/tech/imageresizershrinker/core/domain/image/model/ImageFormat.kt
@@ -193,7 +193,7 @@ sealed class ImageFormat(
         data object Lossless : Jxl(
             title = "JXL Lossless",
             compressionTypes = listOf(
-                CompressionType.Effort(0..9)
+                CompressionType.Effort(1..10)
             )
         )
 
@@ -201,7 +201,7 @@ sealed class ImageFormat(
             title = "JXL Lossy",
             compressionTypes = listOf(
                 CompressionType.Quality(1..100),
-                CompressionType.Effort(0..9)
+                CompressionType.Effort(1..10)
             )
         )
     }
diff --git a/core/domain/src/main/kotlin/ru/tech/imageresizershrinker/core/domain/image/model/Quality.kt b/core/domain/src/main/kotlin/ru/tech/imageresizershrinker/core/domain/image/model/Quality.kt
index 58d6e98468..ea0fb3e961 100644
--- a/core/domain/src/main/kotlin/ru/tech/imageresizershrinker/core/domain/image/model/Quality.kt
+++ b/core/domain/src/main/kotlin/ru/tech/imageresizershrinker/core/domain/image/model/Quality.kt
@@ -30,7 +30,7 @@ sealed class Quality(
                 val value = this as? Jxl ?: return Jxl(qualityValue.coerceIn(1..100))
                 value.copy(
                     qualityValue = qualityValue.coerceIn(1..100),
-                    effort = effort.coerceIn(0..9),
+                    effort = effort.coerceIn(1..10),
                     speed = speed.coerceIn(0..4)
                 )
             }
@@ -71,7 +71,7 @@ sealed class Quality(
     data class Jxl(
         @IntRange(from = 1, to = 100)
         override val qualityValue: Int = 50,
-        @IntRange(from = 0, to = 9)
+        @IntRange(from = 1, to = 10)
         val effort: Int = 5,
         @IntRange(from = 0, to = 4)
         val speed: Int = 0,
diff --git a/core/ui/src/main/kotlin/ru/tech/imageresizershrinker/core/ui/widget/controls/selection/QualitySelector.kt b/core/ui/src/main/kotlin/ru/tech/imageresizershrinker/core/ui/widget/controls/selection/QualitySelector.kt
index 3d572a1f78..17631799e3 100644
--- a/core/ui/src/main/kotlin/ru/tech/imageresizershrinker/core/ui/widget/controls/selection/QualitySelector.kt
+++ b/core/ui/src/main/kotlin/ru/tech/imageresizershrinker/core/ui/widget/controls/selection/QualitySelector.kt
@@ -216,7 +216,7 @@ fun QualitySelector(
                             Text(
                                 text = stringResource(
                                     R.string.speed_sub,
-                                    0, 5
+                                    0, 4
                                 ),
                                 fontSize = 12.sp,
                                 textAlign = TextAlign.Center,