diff --git a/src/Config.zig b/src/Config.zig
index 071c74bb..acb99eca 100644
--- a/src/Config.zig
+++ b/src/Config.zig
@@ -163,10 +163,14 @@ pub const Serve = struct {
     common: Common = .{},
 };
 
+pub const DumpFormat = enum {
+    html,
+    markdown,
+};
+
 pub const Fetch = struct {
     url: [:0]const u8,
-    html: bool = false,
-    markdown: bool = false,
+    dump_mode: ?DumpFormat = null,
     common: Common = .{},
     withbase: bool = false,
     strip: dump.Opts.Strip = .{},
@@ -303,16 +307,12 @@ pub fn printUsageAndExit(self: *const Config, success: bool) void {
         \\
         \\fetch command
         \\Fetches the specified URL
-        \\Example: {s} fetch --html https://lightpanda.io/
+        \\Example: {s} fetch --dump html https://lightpanda.io/
         \\
         \\Options:
-        \\--html          Dumps document to stdout as HTML.
-        \\                Defaults to false.
-        \\
-        \\--dump          Alias for --html (deprecated).
-        \\
-        \\--markdown      Dumps document to stdout as Markdown.
-        \\                Defaults to false.
+        \\--dump          Dumps document to stdout.
+        \\                Argument must be 'html' or 'markdown'.
+        \\                Defaults to no dump.
         \\
         \\--strip_mode    Comma separated list of tag groups to remove from dump
         \\                the dump. e.g. --strip_mode js,css
@@ -412,18 +412,10 @@ fn inferMode(opt: []const u8) ?RunMode {
         return .fetch;
     }
 
-    if (std.mem.eql(u8, opt, "--html")) {
-        return .fetch;
-    }
-
     if (std.mem.eql(u8, opt, "--dump")) {
         return .fetch;
     }
 
-    if (std.mem.eql(u8, opt, "--markdown")) {
-        return .fetch;
-    }
-
     if (std.mem.eql(u8, opt, "--noscript")) {
         return .fetch;
     }
@@ -560,21 +552,23 @@ fn parseFetchArgs(
     allocator: Allocator,
     args: *std.process.ArgIterator,
 ) !Fetch {
-    var fetch_html: bool = false;
-    var fetch_markdown: bool = false;
+    var dump_mode: ?DumpFormat = null;
     var withbase: bool = false;
     var url: ?[:0]const u8 = null;
     var common: Common = .{};
     var strip: dump.Opts.Strip = .{};
 
     while (args.next()) |opt| {
-        if (std.mem.eql(u8, "--html", opt) or std.mem.eql(u8, "--dump", opt)) {
-            fetch_html = true;
-            continue;
-        }
+        if (std.mem.eql(u8, "--dump", opt)) {
+            const str = args.next() orelse {
+                log.fatal(.app, "missing argument value", .{ .arg = "--dump" });
+                return error.InvalidArgument;
+            };
 
-        if (std.mem.eql(u8, "--markdown", opt)) {
-            fetch_markdown = true;
+            dump_mode = std.meta.stringToEnum(DumpFormat, str) orelse {
+                log.fatal(.app, "invalid option choice", .{ .arg = "--dump", .value = str });
+                return error.InvalidArgument;
+            };
             continue;
         }
 
@@ -641,8 +635,7 @@ fn parseFetchArgs(
 
     return .{
         .url = url.?,
-        .html = fetch_html,
-        .markdown = fetch_markdown,
+        .dump_mode = dump_mode,
         .strip = strip,
         .common = common,
         .withbase = withbase,
diff --git a/src/lightpanda.zig b/src/lightpanda.zig
index 1904c3ba..97face0f 100644
--- a/src/lightpanda.zig
+++ b/src/lightpanda.zig
@@ -37,7 +37,7 @@ const IS_DEBUG = @import("builtin").mode == .Debug;
 pub const FetchOpts = struct {
     wait_ms: u32 = 5000,
     dump: dump.RootOpts,
-    markdown: bool = false,
+    dump_mode: ?Config.DumpFormat = null,
     writer: ?*std.Io.Writer = null,
 };
 pub fn fetch(app: *App, url: [:0]const u8, opts: FetchOpts) !void {
@@ -96,10 +96,11 @@ pub fn fetch(app: *App, url: [:0]const u8, opts: FetchOpts) !void {
     _ = session.wait(opts.wait_ms);
 
     const writer = opts.writer orelse return;
-    if (opts.markdown) {
-        try markdown.dump(page.window._document.asNode(), .{}, writer, page);
-    } else {
-        try dump.root(page.window._document, opts.dump, writer, page);
+    if (opts.dump_mode) |mode| {
+        switch (mode) {
+            .html => try dump.root(page.window._document, opts.dump, writer, page),
+            .markdown => try markdown.dump(page.window._document.asNode(), .{}, writer, page),
+        }
     }
     try writer.flush();
 }
diff --git a/src/main.zig b/src/main.zig
index 25257533..f9470419 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -107,11 +107,11 @@ fn run(allocator: Allocator, main_arena: Allocator) !void {
         },
         .fetch => |opts| {
             const url = opts.url;
-            log.debug(.app, "startup", .{ .mode = "fetch", .html = opts.html, .url = url, .snapshot = app.snapshot.fromEmbedded() });
+            log.debug(.app, "startup", .{ .mode = "fetch", .dump_mode = opts.dump_mode, .url = url, .snapshot = app.snapshot.fromEmbedded() });
 
             var fetch_opts = lp.FetchOpts{
                 .wait_ms = 5000,
-                .markdown = opts.markdown,
+                .dump_mode = opts.dump_mode,
                 .dump = .{
                     .strip = opts.strip,
                     .with_base = opts.withbase,
@@ -120,7 +120,7 @@ fn run(allocator: Allocator, main_arena: Allocator) !void {
 
             var stdout = std.fs.File.stdout();
             var writer = stdout.writer(&.{});
-            if (opts.html or opts.markdown) {
+            if (opts.dump_mode != null) {
                 fetch_opts.writer = &writer.interface;
             }