diff --git a/.cargo/config.toml b/.cargo/config.toml
index 635229119f8..b307d35eee9 100644
--- a/.cargo/config.toml
+++ b/.cargo/config.toml
@@ -6,3 +6,15 @@ rustflags = "-C link-args=-Wl,--stack,8000000"
 
 [target.wasm32-unknown-unknown]
 rustflags = ["--cfg=getrandom_backend=\"wasm_js\""]
+
+[target.wasm32-wasip1]
+rustflags = [
+    "-C", "link-arg=--max-memory=67108864",
+    "-C", "link-arg=-zstack-size=1048576",
+]
+
+[target.wasm32-wasip2]
+rustflags = [
+    "-C", "link-arg=--max-memory=67108864",
+    "-C", "link-arg=-zstack-size=1048576",
+]
diff --git a/Cargo.toml b/Cargo.toml
index 7bd8b8f3374..b7469da89bc 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -100,6 +100,14 @@ opt-level = 3
 [profile.release]
 lto = "thin"
 
+[profile.wasm-release]
+inherits = "release"
+opt-level = "s"
+lto = true
+codegen-units = 1
+strip = true
+panic = "abort"
+
 [patch.crates-io]
 parking_lot_core = { git = "https://github.com/youknowone/parking_lot", branch = "rustpython" }
 # REDOX START, Uncomment when you want to compile/check with redoxer
diff --git a/crates/vm/src/datastack.rs b/crates/vm/src/datastack.rs
index b00f1b6dc19..370f4197e91 100644
--- a/crates/vm/src/datastack.rs
+++ b/crates/vm/src/datastack.rs
@@ -9,6 +9,10 @@ use core::alloc::Layout;
 use core::ptr;
 
 /// Minimum chunk size in bytes (`_PY_DATA_STACK_CHUNK_SIZE`).
+/// Smaller on WASM to reduce initial memory footprint.
+#[cfg(target_arch = "wasm32")]
+const MIN_CHUNK_SIZE: usize = 4 * 1024;
+#[cfg(not(target_arch = "wasm32"))]
 const MIN_CHUNK_SIZE: usize = 16 * 1024;
 
 /// Extra headroom (in bytes) to avoid allocating a new chunk for the next