diff --git a/Cargo.toml b/Cargo.toml
index 2989755..98330ae 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -11,7 +11,7 @@ rust-version = "1.81.0"
 categories = ["science::geo"]
 
 [features]
-default = ["__writer"]
+default = []
 http-async = ["__async", "dep:reqwest"]
 mmap-async-tokio = ["__async", "dep:fmmap", "fmmap?/tokio-async"]
 s3-async-native = ["__async-s3", "__async-s3-nativetls"]
@@ -32,7 +32,6 @@ __async-s3 = ["__async", "dep:rust-s3"]
 __async-s3-nativetls = ["rust-s3?/use-tokio-native-tls"]
 __async-s3-rustls = ["rust-s3?/tokio-rustls-tls"]
 __async-aws-s3 = ["__async", "dep:aws-sdk-s3"]
-__writer = []
 
 [dependencies]
 # TODO: determine how we want to handle compression in async & sync environments
diff --git a/src/header.rs b/src/header.rs
index d47863e..fee75e0 100644
--- a/src/header.rs
+++ b/src/header.rs
@@ -6,9 +6,7 @@ use bytes::{Buf, Bytes};
 
 use crate::error::{PmtError, PmtResult};
 
-#[cfg(any(feature = "__async", feature = "__writer"))]
 pub(crate) const MAX_INITIAL_BYTES: usize = 16_384;
-#[cfg(any(test, feature = "__async", feature = "__writer"))]
 pub(crate) const HEADER_SIZE: usize = 127;
 
 #[allow(dead_code)]
@@ -145,7 +143,7 @@ impl TryInto<TileType> for u8 {
     }
 }
 
-pub(crate) static V3_MAGIC: &str = "PMTiles";
+static V3_MAGIC: &str = "PMTiles";
 static V2_MAGIC: &str = "PM";
 
 impl Header {
diff --git a/src/lib.rs b/src/lib.rs
index cdf7485..b5f16a4 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -17,8 +17,7 @@ mod error;
 mod header;
 #[cfg(feature = "__async")]
 mod tile;
-#[cfg(feature = "__writer")]
-pub mod writer;
+mod writer;
 
 #[cfg(feature = "aws-s3-async")]
 pub use backend_aws_s3::AwsS3Backend;
@@ -31,6 +30,7 @@ pub use backend_s3::S3Backend;
 pub use directory::{DirEntry, Directory};
 pub use error::{PmtError, PmtResult};
 pub use header::{Compression, Header, TileType};
+pub use writer::PmTilesWriter;
 //
 // Re-export crates exposed in our API to simplify dependency management
 #[cfg(feature = "__async-aws-s3")]