diff --git a/public/js/title.js b/public/js/title.js
index 1b423d1..18a39ed 100644
--- a/public/js/title.js
+++ b/public/js/title.js
@@ -38,8 +38,12 @@ function showModal(encodedPath, pages, percentage, encodedeTitle, encodedEntryTi
 	styleModal();
 }
 
-function updateProgress(titleID, entryID, page) {
-	$.post('/api/progress/' + titleID + '/' + entryID + '/' + page, function(data) {
+const updateProgress = (tid, eid, page) => {
+	let url = `/api/progress/${tid}/${page}`
+	const query = $.param({entry: eid});
+	if (eid)
+		url += `?${query}`;
+	$.post(url, (data) => {
 		if (data.success) {
 			location.reload();
 		}
@@ -48,7 +52,7 @@ function updateProgress(titleID, entryID, page) {
 			alert('danger', error);
 		}
 	});
-}
+};
 
 const renameSubmit = (name, eid) => {
 	const upload = $('.upload-field');
diff --git a/src/library.cr b/src/library.cr
index d490a3d..058b04a 100644
--- a/src/library.cr
+++ b/src/library.cr
@@ -258,6 +258,26 @@ class Title
     end
   end
 
+  # Set the reading progress of all entries and nested libraries to 100%
+  def read_all(username)
+    @entries.each do |e|
+      save_progress username, e.title, e.pages
+    end
+    titles.each do |t|
+      t.read_all username
+    end
+  end
+
+  # Set the reading progress of all entries and nested libraries to 0%
+  def unread_all(username)
+    @entries.each do |e|
+      save_progress username, e.title, 0
+    end
+    titles.each do |t|
+      t.unread_all username
+    end
+  end
+
   # For backward backward compatibility with v0.1.0, we save entry titles
   #   instead of IDs in info.json
   def save_progress(username, entry, page)
diff --git a/src/routes/api.cr b/src/routes/api.cr
index 3e75b41..e888239 100644
--- a/src/routes/api.cr
+++ b/src/routes/api.cr
@@ -69,16 +69,23 @@ class APIRouter < Router
       end
     end
 
-    post "/api/progress/:title/:entry/:page" do |env|
+    post "/api/progress/:title/:page" do |env|
       begin
         username = get_username env
         title = (@context.library.get_title env.params.url["title"])
           .not_nil!
-        entry = (title.get_entry env.params.url["entry"]).not_nil!
         page = env.params.url["page"].to_i
+        entry_id = env.params.query["entry"]?
 
-        raise "incorrect page value" if page < 0 || page > entry.pages
-        title.save_progress username, entry.title, page
+        if !entry_id.nil?
+          entry = title.get_entry(entry_id).not_nil!
+          raise "incorrect page value" if page < 0 || page > entry.pages
+          title.save_progress username, entry.title, page
+        elsif page == 0
+          title.unread_all username
+        else
+          title.read_all username
+        end
       rescue e
         @context.error e
         send_json env, {