diff --git a/crates/doc/src/props.rs b/crates/doc/src/props.rs
index 0d4361b2..403620d6 100644
--- a/crates/doc/src/props.rs
+++ b/crates/doc/src/props.rs
@@ -1337,13 +1337,14 @@ impl ExportSize {
         (value.is_finite() && value > 0.0 && value <= max).then_some(self)
     }
 
-    /// "2x", "512w", "512h".
+    /// "2x", "0.125x", "512w", "512h". Not rounded, so `parse` reads it back as the same size.
     pub fn label(self) -> String {
-        let n = |v: f64| crate::text::trim_num(v);
+        // `{}` prints the shortest text that parses back to the same `f64`, and whole numbers
+        // without a fraction ("2", not "2.0").
         match self {
-            ExportSize::Scale { value } => format!("{}x", n(value)),
-            ExportSize::Width { value } => format!("{}w", n(value)),
-            ExportSize::Height { value } => format!("{}h", n(value)),
+            ExportSize::Scale { value } => format!("{value}x"),
+            ExportSize::Width { value } => format!("{value}w"),
+            ExportSize::Height { value } => format!("{value}h"),
         }
     }
 
diff --git a/crates/engine/src/import_export_tests.rs b/crates/engine/src/import_export_tests.rs
index 5560e9fd..a60f85b0 100644
--- a/crates/engine/src/import_export_tests.rs
+++ b/crates/engine/src/import_export_tests.rs
@@ -232,3 +232,21 @@ fn export_sizes_parse_and_label() {
     assert_eq!(e(ExportSize::Scale { value: 2.0 }, "-big", ExportFormat::Png).file_suffix(), "-big");
     assert_eq!(e(ExportSize::Width { value: 64.0 }, "", ExportFormat::Png).file_suffix(), "");
 }
+
+#[test]
+fn export_size_label_parses_back_exactly() {
+    for want in [
+        ExportSize::Scale { value: 0.125 },
+        ExportSize::Scale { value: 0.004 },
+        ExportSize::Scale { value: 0.001 },
+        ExportSize::Scale { value: 63.99 },
+        ExportSize::Scale { value: 1.0 / 3.0 },
+        ExportSize::Width { value: 512.125 },
+        ExportSize::Height { value: 0.005 },
+    ] {
+        assert_eq!(ExportSize::parse(&want.label()), Some(want), "{}", want.label());
+    }
+    assert_eq!(ExportSize::Scale { value: 0.125 }.label(), "0.125x");
+    assert_eq!(ExportSize::Scale { value: 2.0 }.label(), "2x");
+    assert_eq!(ExportSize::Width { value: 512.0 }.label(), "512w");
+}