diff --git a/brood/src/data.rs b/brood/src/data.rs
index afa904f..560f383 100644
--- a/brood/src/data.rs
+++ b/brood/src/data.rs
@@ -21,3 +21,49 @@ pub struct AdjacencyList {
     pub pages: Vec<Page>,
     pub links: Vec<Link>,
 }
+
+#[derive(Debug, Serialize, Deserialize)]
+pub struct SlimAdjacencyList {
+    pages: Vec<(u32, u32, u16, String, bool)>,
+    links: Vec<(u32, u32, u32)>,
+}
+
+impl SlimAdjacencyList {
+    pub fn from_alist(alist: AdjacencyList) -> Self {
+        let pages = alist
+            .pages
+            .into_iter()
+            .map(|p| (p.link_idx, p.id, p.ns, p.title, p.redirect))
+            .collect();
+
+        let links = alist
+            .links
+            .into_iter()
+            .map(|l| (l.to, l.start, l.end))
+            .collect();
+
+        Self { pages, links }
+    }
+
+    pub fn to_alist(self) -> AdjacencyList {
+        let pages = self
+            .pages
+            .into_iter()
+            .map(|(link_idx, id, ns, title, redirect)| Page {
+                link_idx,
+                ns,
+                id,
+                title,
+                redirect,
+            })
+            .collect();
+
+        let links = self
+            .links
+            .into_iter()
+            .map(|(to, start, end)| Link { to, start, end })
+            .collect();
+
+        AdjacencyList { pages, links }
+    }
+}
diff --git a/brood/src/ingest.rs b/brood/src/ingest.rs
index b31e872..d084a91 100644
--- a/brood/src/ingest.rs
+++ b/brood/src/ingest.rs
@@ -4,7 +4,7 @@ use std::io::{self, BufRead, BufReader};
 use rustc_hash::FxHashMap;
 use serde::Deserialize;
 
-use crate::data::{AdjacencyList, Link, Page};
+use crate::data::{AdjacencyList, Link, Page, SlimAdjacencyList};
 
 #[derive(Deserialize)]
 struct JsonPage {
@@ -179,7 +179,9 @@ pub fn ingest() -> io::Result<()> {
     }
 
     eprintln!("EXPORT");
-    ciborium::ser::into_writer(&second_stage, io::stdout()).unwrap();
+    let data = SlimAdjacencyList::from_alist(second_stage);
+    ciborium::ser::into_writer(&data, io::stdout()).unwrap();
+    // simd_json::to_writer(io::stdout(), &data).unwrap();
 
     Ok(())
 }
diff --git a/brood/src/test.rs b/brood/src/test.rs
index bdb46a1..5ebeabf 100644
--- a/brood/src/test.rs
+++ b/brood/src/test.rs
@@ -1,10 +1,13 @@
 use std::io::{self, BufReader};
 
-use crate::data::AdjacencyList;
+use crate::data::SlimAdjacencyList;
 
 pub fn test() -> io::Result<()> {
     eprintln!("IMPORT");
-    let data: AdjacencyList = ciborium::de::from_reader(BufReader::new(io::stdin())).unwrap();
+    let data: SlimAdjacencyList = ciborium::de::from_reader(BufReader::new(io::stdin())).unwrap();
+    // let data: SlimAdjacencyList =
+    //     simd_json::serde::from_reader(BufReader::new(io::stdin())).unwrap();
+    let data = data.to_alist();
 
     eprintln!("CONSISTENCY CHECK");
     let range = 0..data.pages.len() as u32;