diff --git a/bingus/Cargo.toml b/bingus/Cargo.toml
index 6676362..066fc46 100644
--- a/bingus/Cargo.toml
+++ b/bingus/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "bingus"
-version = "0.3.0"
+version = "0.3.1"
 edition.workspace = true
 license.workspace = true
 description.workspace = true
@@ -10,9 +10,9 @@ keywords.workspace = true
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 [dependencies]
-image = { version = "0.25", features = ["rayon"] }
+image = { version = "0.25" }
 num = "0"
-rayon = "1"
+rayon = { version = "1", optional = true }
 infer = "0"
 thiserror = "2"
 derive-new = "0"
@@ -28,7 +28,6 @@ printpdf = { version = "0.8.2", features = [
     "jpeg",
     "png",
     "pnm",
-    "rayon",
     "tga",
     "tiff",
     "js-sys",
@@ -41,3 +40,7 @@ font-kit = { version = "0.14.2", features = ["loader-freetype-default"] }
 [dev-dependencies]
 project-root = "0"
 pretty_assertions = "1"
+
+[features]
+default = []
+rayon = ["image/rayon", "printpdf/rayon", "dep:rayon"]
diff --git a/bingus/src/bin_/bytes.rs b/bingus/src/bin_/bytes.rs
index 0b77a2c..6e1733e 100644
--- a/bingus/src/bin_/bytes.rs
+++ b/bingus/src/bin_/bytes.rs
@@ -1,5 +1,6 @@
 use std::{borrow::Cow, convert::Infallible};
 
+#[cfg(feature = "rayon")]
 use rayon::iter::{IntoParallelRefMutIterator, ParallelIterator};
 
 use crate::{Bendable, Bytes, IntoDataBytes, TryFromDataBytes};
@@ -27,10 +28,15 @@ impl TryFromDataBytes for Bytes {
 
 impl Bendable for Bytes {
     type Unit = u8;
+    #[cfg(feature = "rayon")]
     fn map<F: Fn(Cow<Self::Unit>) -> Self::Unit + Sync>(mut self, f: F) -> Self {
         self.par_iter_mut().for_each(|e| *e = f(Cow::Borrowed(e)));
         self
     }
+    fn map<F: Fn(Cow<Self::Unit>) -> Self::Unit + Sync>(mut self, f: F) -> Self {
+        self.iter_mut().for_each(|e| *e = f(Cow::Borrowed(e)));
+        self
+    }
     fn format() -> crate::Format {
         crate::Format::Binary
     }
diff --git a/bingus/src/img/image.rs b/bingus/src/img/image.rs
index c91e359..6681379 100644
--- a/bingus/src/img/image.rs
+++ b/bingus/src/img/image.rs
@@ -10,6 +10,7 @@ use num::{
     traits::{FromBytes, ToBytes},
     Zero,
 };
+#[cfg(feature = "rayon")]
 use rayon::iter::ParallelIterator;
 use thiserror::Error;
 
@@ -178,10 +179,15 @@ where
     P: Send + Sync,
 {
     type Unit = P;
+    #[cfg(feature = "rayon")]
     fn map<F: Fn(Cow<Self::Unit>) -> Self::Unit + Sync>(mut self, f: F) -> Self {
         self.par_pixels_mut().for_each(|p| *p = f(Cow::Borrowed(p)));
         self
     }
+    fn map<F: Fn(Cow<Self::Unit>) -> Self::Unit + Sync>(mut self, f: F) -> Self {
+        self.pixels_mut().for_each(|p| *p = f(Cow::Borrowed(p)));
+        self
+    }
     fn format() -> crate::Format {
         Format::Image
     }
diff --git a/bingus/src/snd/raw.rs b/bingus/src/snd/raw.rs
index 35ed099..944c5c0 100644
--- a/bingus/src/snd/raw.rs
+++ b/bingus/src/snd/raw.rs
@@ -6,6 +6,7 @@ use num::{
     traits::{FromBytes, ToBytes},
     Zero,
 };
+#[cfg(feature = "rayon")]
 use rayon::iter::{IntoParallelRefMutIterator, ParallelIterator};
 
 use crate::{Bendable, IntoDataBytes, TryFromDataBytes};
@@ -66,6 +67,7 @@ where
     }
 }
 
+#[cfg(feature = "rayon")]
 impl<T> Bendable for RawSamples<T>
 where
     T: Sample + FromBytes + ToBytes + Zero + Send,
@@ -81,3 +83,18 @@ where
         crate::Format::Sound
     }
 }
+
+impl<T> Bendable for RawSamples<T>
+where
+    T: Sample + FromBytes + ToBytes + Zero + Send,
+    <T as FromBytes>::Bytes: Sized + for<'a> TryFrom<&'a [u8]>,
+{
+    type Unit = T;
+    fn map<F: Fn(Cow<Self::Unit>) -> Self::Unit + Sync>(mut self, f: F) -> Self {
+        self.0.iter_mut().for_each(|e| *e = f(Cow::Borrowed(e)));
+        self
+    }
+    fn format() -> crate::dynamic::Format {
+        crate::Format::Sound
+    }
+}