diff --git a/crates/ui-egui/src/panels/detail.rs b/crates/ui-egui/src/panels/detail.rs
index 5e5d99aa..45bb8c31 100644
--- a/crates/ui-egui/src/panels/detail.rs
+++ b/crates/ui-egui/src/panels/detail.rs
@@ -680,6 +680,15 @@ fn crop_overlay(app: &mut LightcraftApp, ui: &mut egui::Ui, resp: &egui::Respons
             None => egui::CursorIcon::Alias,
         });
     }
+    // double-click inside the crop box applies the crop (same as Return / Done)
+    if resp.double_clicked()
+        && let Some(q) = resp.interact_pointer_pos()
+        && inside(q)
+        && !handles.iter().any(|h| h.distance(q) < 12.0)
+    {
+        let _ = app.run("tool.done", json!({}));
+        return;
+    }
     if resp.drag_started()
         && let Some(q) = resp.interact_pointer_pos()
     {
diff --git a/crates/ui-egui/src/tests_masking.rs b/crates/ui-egui/src/tests_masking.rs
index 4cbead74..1e4c0d14 100644
--- a/crates/ui-egui/src/tests_masking.rs
+++ b/crates/ui-egui/src/tests_masking.rs
@@ -236,6 +236,18 @@ fn command_drag_straightens_in_crop() {
     h.settle(SETTLE);
 }
 
+#[test]
+fn double_click_in_crop_box_applies_the_crop() {
+    let mut h = detail("panel.crop");
+    h.settle(SETTLE);
+    assert_eq!(h.app.ui.right, crate::state::RightPanel::Crop);
+    let c = h.app.image_rect.expect("image on screen").center();
+    let r = h.request("ui.click", json!({"x": c.x, "y": c.y, "count": 2}), T);
+    assert_eq!(r["ok"], true, "{r}");
+    h.settle(SETTLE);
+    assert_eq!(h.app.ui.right, crate::state::RightPanel::Edit, "double-click leaves the crop tool");
+}
+
 #[test]
 fn option_digit_toggles_keyword_from_set() {
     let mut h = detail("panel.keywords");
diff --git a/docs/parity.md b/docs/parity.md
index 32b48fb8..7ba27321 100644
--- a/docs/parity.md
+++ b/docs/parity.md
@@ -269,7 +269,7 @@ under the UI command that wraps it (a no-op error); the UI command now wins.
 
 | Id | Feature | Tier | Status | Evidence | Missing / notes |
 |---|---|---|---|---|---|
-| LR-CROP-RECT | Crop rectangle | P0 | ✅ | `cmd:crop.set`, `crates/ui-egui/src/panels/detail.rs` | |
+| LR-CROP-RECT | Crop rectangle | P0 | ✅ | `cmd:crop.set`, `crates/ui-egui/src/panels/detail.rs` | double-click inside the box applies the crop (like Return) |
 | LR-CROP-ASPECT | Aspect ratios | P0 | ✅ | `cmd:crop.aspect`, `cmd:crop.rotateAspect` | no "As Shot"; custom ratio via command params only |
 | LR-CROP-STRAIGHTEN | Straighten tool | P0 | ✅ | `cmd:crop.straighten`, `cmd:crop.autoStraighten` | Straighten Tool button: drag along a horizon/vertical; double-click or Auto levels automatically |
 | LR-CROP-AUTO | Auto straighten | P1 | ✅ | `cmd:crop.autoStraighten` | crop-angle leveling from detected horizon/plumb lines (consensus required) |