diff --git a/pagefind/src/lib.rs b/pagefind/src/lib.rs
index 403a7675..73f235c3 100644
--- a/pagefind/src/lib.rs
+++ b/pagefind/src/lib.rs
@@ -1,6 +1,6 @@
 use std::{cmp::Ordering, path::PathBuf};
 
-use anyhow::{bail, Result};
+use anyhow::{bail, Result, anyhow};
 use fossick::{FossickedData, Fossicker};
 use futures::future::join_all;
 use hashbrown::HashMap;
@@ -27,6 +27,10 @@ mod utils;
 
 const PAGEFIND_VERSION: &str = env!("CARGO_PKG_VERSION");
 
+pub struct IndexCatalogueRepresentation {
+    entries: Vec<(String, String)>
+}
+
 struct SearchState {
     options: SearchOptions,
     fossicked_pages: Vec<FossickedData>,
@@ -312,6 +316,19 @@ impl SearchState {
         outdir
     }
 
+    pub async fn get_index_catalogue(&self) -> Result<IndexCatalogueRepresentation> {
+        if self.built_indexes.is_empty() {
+            return Err(anyhow!("Indexes empty, are they built yet? (run get_files/write_files)"));
+        }
+        let entries: Vec<(String, String)> = self
+            .built_indexes
+            .iter()
+            .map(|indexes| indexes.fragments.clone()
+                .into_iter()
+            ).flatten().collect();
+        Ok(IndexCatalogueRepresentation { entries })
+    }
+
     pub async fn get_files(&self) -> Vec<SyntheticFile> {
         let outdir = &self.options.bundle_output;
 
diff --git a/pagefind/src/service/api.rs b/pagefind/src/service/api.rs
index 8df40cf3..825c90c8 100644
--- a/pagefind/src/service/api.rs
+++ b/pagefind/src/service/api.rs
@@ -41,7 +41,7 @@ use std::{collections::BTreeMap, path::PathBuf};
 use crate::{
     fossick::{parser::DomParserResult, Fossicker},
     options::PagefindServiceConfig,
-    PagefindInboundConfig, SearchOptions, SearchState,
+    PagefindInboundConfig, SearchOptions, SearchState, IndexCatalogueRepresentation,
 };
 
 #[derive(Debug)]
@@ -208,6 +208,14 @@ impl PagefindIndex {
         self.search_index.build_indexes().await?;
         Ok(self.search_index.get_files().await)
     }
+
+    /// Get the catalogue mappings from hashes to encoded data.
+    ///
+    /// # Returns
+    /// An IndexCatalogueRepresentation containing the hash and content of each fragment.
+    pub async fn get_index_catalogue(&mut self) -> Result<IndexCatalogueRepresentation> {
+        self.search_index.get_index_catalogue().await
+    }
 }
 
 #[cfg(test)]
diff --git a/pagefind/src/service/mod.rs b/pagefind/src/service/mod.rs
index 41d772ad..ee4c5109 100644
--- a/pagefind/src/service/mod.rs
+++ b/pagefind/src/service/mod.rs
@@ -222,6 +222,19 @@ pub async fn run_service() {
                     }
                 }
             }
+            RequestAction::GetIndexCatalogue { index_id } => {
+                if let Some(index) = get_index(&mut indexes, index_id, err) {
+                    match index.get_index_catalogue().await {
+                        Ok(index_catalogue) => {
+                            send(ResponseAction::GetIndexCatalogue {
+                                entry_count: index_catalogue.entries.len(),
+                                entries: index_catalogue.entries,
+                            })
+                        }
+                        Err(e) => err(&e.to_string()),
+                    }
+                }
+            }
             RequestAction::GetFiles { index_id } => {
                 if let Some(index) = get_index(&mut indexes, index_id, err) {
                     match index.build_indexes().await {
diff --git a/pagefind/src/service/requests.rs b/pagefind/src/service/requests.rs
index 83654fc0..1f0dac76 100644
--- a/pagefind/src/service/requests.rs
+++ b/pagefind/src/service/requests.rs
@@ -46,6 +46,9 @@ pub(super) enum RequestAction {
     GetFiles {
         index_id: u32,
     },
+    GetIndexCatalogue {
+        index_id: u32,
+    },
     DeleteIndex {
         index_id: u32,
     },
diff --git a/pagefind/src/service/responses.rs b/pagefind/src/service/responses.rs
index e021d081..8166afbe 100644
--- a/pagefind/src/service/responses.rs
+++ b/pagefind/src/service/responses.rs
@@ -33,6 +33,10 @@ pub(super) enum ResponseAction {
     GetFiles {
         files: Vec<SyntheticFileResponse>,
     },
+    GetIndexCatalogue {
+        entries: Vec<(String, String)>,
+        entry_count: usize,
+    },
     DeleteIndex {},
 }
 
diff --git a/wrappers/node/lib/index.js b/wrappers/node/lib/index.js
index 48993ca5..b6ff5727 100644
--- a/wrappers/node/lib/index.js
+++ b/wrappers/node/lib/index.js
@@ -96,6 +96,7 @@ const indexFns = (indexId) => {
         addDirectory: (dir) => addDirectory(indexId, dir),
         writeFiles: (options) => writeFiles(indexId, options),
         getFiles: () => getFiles(indexId),
+        getIndexCatalogue: () => getIndexCatalogue(indexId),
         deleteIndex: () => deleteIndex(indexId)
     }
 }
@@ -276,6 +277,36 @@ const getFiles = (indexId) => new Promise((resolve, reject) => {
     );
 });
 
+/**
+ * @typedef {import ('pagefindService').GetIndexCatalogueResponse} GetIndexCatalogueResponse
+ * 
+ * @param {number} indexId 
+ * @returns {Promise<GetIndexCatalogueResponse>}
+ */
+const getIndexCatalogue = (indexId) => new Promise((resolve, reject) => {
+    const action = 'GetIndexCatalogue';
+    launch().sendMessage(
+        {
+            type: action,
+            index_id: indexId,
+        }, (response) => {
+            /** @type {function(InternalResponsePayload): Omit<GetIndexCatalogueResponse, 'errors'>?} */
+            const successCallback = (success) => {
+                if (success.type !== action) {
+                    reject(`Message returned from backend should have been ${action}, but was ${success.type}`);
+                    return null;
+                }
+
+                return {
+                    entries: success.entries,
+                    entryCount: success.entry_count
+                }
+            };
+            handleApiResponse(resolve, reject, response, successCallback);
+        }
+    );
+});
+
 /**
  * @param {number} indexId 
  * @returns {Promise<null>}