diff --git a/crates/format/src/lib.rs b/crates/format/src/lib.rs
index e038a6e64..d42c3d25f 100644
--- a/crates/format/src/lib.rs
+++ b/crates/format/src/lib.rs
@@ -59,16 +59,6 @@ pub fn write<W: std::io::Write + std::io::Seek>(out: &mut W, doc: &Document, pre
     craft_designcraft_format::write_to(out, &compact, concat!("DesignCraft ", env!("CARGO_PKG_VERSION")), preview, &assets, &proxies)
 }
 
-/// [`save_with_preview`] into `out`, in chunks, so a writer that stops on cancellation stops the
-/// write at its next chunk.
-pub fn write<W: std::io::Write>(out: &mut W, doc: &Document, preview: Option<&[u8]>) -> Result<(), FormatError> {
-    let bytes = save_with_preview(doc, preview)?;
-    for chunk in bytes.chunks(1 << 20) {
-        out.write_all(chunk).map_err(|e| FormatError::Io(e.to_string()))?;
-    }
-    Ok(())
-}
-
 /// Required native format version for a document. Kept for app-side compatibility; inference is
 /// performed by the shared codec over the serialized neutral document schema.
 #[cfg(test)]