diff --git a/apps/figcraft/src/services.rs b/apps/figcraft/src/services.rs
index 44bb20c0..ca881067 100644
--- a/apps/figcraft/src/services.rs
+++ b/apps/figcraft/src/services.rs
@@ -445,7 +445,7 @@ impl Services for Desktop {
     fn clipboard_get_png(&mut self) -> Option<Vec<u8>> {
         let board = objc2_app_kit::NSPasteboard::generalPasteboard();
         let png = board.dataForType(&objc2_foundation::NSString::from_str(MACOS_PASTEBOARD_PNG))?;
-        Some(png.to_vec())
+        (png.len() <= figcraft_ui_egui::MAX_CLIPBOARD_PNG_BYTES).then(|| png.to_vec())
     }
     fn open_url(&mut self, url: &str) {
         let _ = webbrowser::open(url);
diff --git a/crates/ui-egui/src/lib.rs b/crates/ui-egui/src/lib.rs
index 1eb714e9..8eba96f9 100644
--- a/crates/ui-egui/src/lib.rs
+++ b/crates/ui-egui/src/lib.rs
@@ -284,7 +284,10 @@ mod state;
 pub(crate) use clock::repaint_in;
 pub use clock::{AUTO_SAVE_SECS, AUTOSAVE_SECS, FrameClock, ToastClock};
 pub(crate) use open::{drop_overlay, dropped_bytes, is_document, opens};
-pub use services::{ContentsFuture, DialogFuture, NoServices, ReadFuture, Services, browser_can_read, egui_copy_png, egui_copy_text, unreadable};
+pub use services::{
+    ContentsFuture, DialogFuture, MAX_CLIPBOARD_PNG_BYTES, NoServices, ReadFuture, Services, browser_can_read, egui_copy_png, egui_copy_text,
+    unreadable,
+};
 use services::{DialogDone, PickFuture, Picked, RepaintWaker};
 pub use state::{
     AutoSaveEncoding, CANVAS_MIN, LEFT_PANEL, LeftTab, MobilePanel, NARROW_WIDTH, PANEL_DEFAULT, RIGHT_PANEL, RightTab, TitleBar, fit_panels,
diff --git a/crates/ui-egui/src/menus/clipboard.rs b/crates/ui-egui/src/menus/clipboard.rs
index 5185e4a8..0af14176 100644
--- a/crates/ui-egui/src/menus/clipboard.rs
+++ b/crates/ui-egui/src/menus/clipboard.rs
@@ -101,7 +101,8 @@ fn paste_text(app: &mut FigApp, text: &str, (cx, cy): (f64, f64), center: bool)
 
 /// The system clipboard's image as PNG bytes, with its size.
 fn clipboard_png(app: &mut FigApp) -> Option<(Vec<u8>, f64, f64)> {
-    let (png, (w, h)) = match app.services.clipboard_get_png().and_then(with_pixel_size) {
+    let clipboard_png = app.services.clipboard_get_png().filter(|png| png.len() <= crate::MAX_CLIPBOARD_PNG_BYTES);
+    let (png, (w, h)) = match clipboard_png.and_then(with_pixel_size) {
         Some(readable) => readable,
         None => with_pixel_size(encoded_clipboard_image(app)?)?,
     };
diff --git a/crates/ui-egui/src/paste_image_tests.rs b/crates/ui-egui/src/paste_image_tests.rs
index 821e1ec8..8608b2c2 100644
--- a/crates/ui-egui/src/paste_image_tests.rs
+++ b/crates/ui-egui/src/paste_image_tests.rs
@@ -534,3 +534,17 @@ fn an_unreadable_png_on_the_clipboard_falls_back_to_the_decoded_image() {
     let pasted = doc.nodes().find(|n| n.name == "Pasted image").expect("pasted from the decoded image");
     assert_eq!((pasted.width, pasted.height), (2.0, 2.0));
 }
+
+#[test]
+fn a_clipboard_png_past_the_byte_limit_falls_back_to_the_decoded_image() {
+    let mut w = Win::new();
+    let mut png = std::io::Cursor::new(Vec::new());
+    image::RgbaImage::new(4, 4).write_to(&mut png, image::ImageFormat::Png).unwrap();
+    let mut png = png.into_inner();
+    png.resize(crate::MAX_CLIPBOARD_PNG_BYTES + 1, 0);
+    *w.clip.borrow_mut() = Clip { png: Some(png), image: Some((2, 2, vec![255; 16])), ..Clip::default() };
+    w.cmd_v(CMD);
+    let doc = w.app.session.doc().unwrap();
+    let pasted = doc.nodes().find(|n| n.name == "Pasted image").expect("pasted from the decoded image");
+    assert_eq!((pasted.width, pasted.height), (2.0, 2.0));
+}
diff --git a/crates/ui-egui/src/services.rs b/crates/ui-egui/src/services.rs
index 80a25e48..75a9b020 100644
--- a/crates/ui-egui/src/services.rs
+++ b/crates/ui-egui/src/services.rs
@@ -1,5 +1,7 @@
 use super::*;
 
+pub const MAX_CLIPBOARD_PNG_BYTES: usize = 256 * 1024 * 1024;
+
 /// Platform services the app crate provides (file dialogs, clipboard, URLs).
 pub trait Services {
     fn pick_open(&mut self, _title: &str, _exts: &[&str]) -> DialogFuture {