diff --git a/crates/automation/src/redact.rs b/crates/automation/src/redact.rs
index a793487d9f..a806d04283 100644
--- a/crates/automation/src/redact.rs
+++ b/crates/automation/src/redact.rs
@@ -3,7 +3,7 @@
 
 use pdfcraft_engine::{
     Edit, HIDDEN, Hidden, NewAnnotation, REDACT_MAX_WORDS, REDACT_VALIDATORS, REDACTION_CODE_SETS, RedactPattern, RedactRegex, RedactValidator,
-    RedactionCodeSet, Shape, Style, find_pattern, rect_quad, redact_word_list,
+    RedactionCodeSet, Shape, Style, find_pattern, rect_quad, redact_word_list, redacted_file_name,
 };
 use serde_json::{Value, json};
 
@@ -200,6 +200,8 @@ impl Automation {
         let after = self.doc(a)?.redaction_marks();
         out["applied"] = json!(before - after);
         out["marks_pending"] = json!(after);
+        // The name to save the redacted copy under, as Save does in the app.
+        out["save_as"] = json!(redacted_file_name(&self.doc(a)?.name));
         Ok(out)
     }
 
diff --git a/crates/automation/src/tools.rs b/crates/automation/src/tools.rs
index 83690c1ba7..c100452fd5 100644
--- a/crates/automation/src/tools.rs
+++ b/crates/automation/src/tools.rs
@@ -678,7 +678,7 @@ pub fn tools() -> Vec<ToolDef> {
         t(
             "redact_apply",
             "Apply redactions",
-            "Apply the redaction marks (all, or those on pages): text, images, vectors, comments and form fields under them are removed for good and boxes are drawn in their place. A verification pass fails the operation if anything readable remains. Undoable until saved; the saved file no longer contains the content.",
+            "Apply the redaction marks (all, or those on pages): text, images, vectors, comments and form fields under them are removed for good and boxes are drawn in their place. A verification pass fails the operation if anything readable remains. Undoable until saved; the saved file no longer contains the content. The result's save_as is the document's name with _Redacted before the extension (contract.pdf gives contract_Redacted.pdf; a name that already ends in _Redacted is unchanged); pass it to doc_save as path to save under that name.",
         )
         .destructive()
         .with(schema(json!({ "doc": doc(), "pages": pages("whose marks to apply (default: all)") }), &["doc"])),
diff --git a/crates/automation/tests/it/automation.rs b/crates/automation/tests/it/automation.rs
index 55d0ae1728..660a418ab5 100644
--- a/crates/automation/tests/it/automation.rs
+++ b/crates/automation/tests/it/automation.rs
@@ -5356,6 +5356,28 @@ fn redacting_through_tools() {
     assert!(matches!(a.call("redact_mark", &json!({ "doc": doc })), Err(ToolError::InvalidArgs(_))));
 }
 
+#[test]
+fn applying_redactions_proposes_the_name_with_redacted() {
+    let dir = workdir("redact-save-as");
+    std::fs::write(dir.join("memo.txt"), "Call 555-123-4567 today").unwrap();
+    let mut a = auto(&dir);
+    let made = ok(&mut a, "doc_create", json!({ "from": "text", "path": "memo.txt" }))["doc"].as_u64().unwrap();
+    ok(&mut a, "doc_save", json!({ "doc": made, "path": "contract.pdf" }));
+    let original = std::fs::read(dir.join("contract.pdf")).unwrap();
+    let doc = ok(&mut a, "doc_open", json!({ "path": "contract.pdf" }))["doc"].as_u64().unwrap();
+    ok(&mut a, "redact_mark", json!({ "doc": doc, "pattern": "phone" }));
+    let r = ok(&mut a, "redact_apply", json!({ "doc": doc }));
+    assert_eq!(r["save_as"], "contract_Redacted.pdf");
+    ok(&mut a, "doc_save", json!({ "doc": doc, "path": r["save_as"] }));
+    assert_eq!(std::fs::read(dir.join("contract.pdf")).unwrap(), original, "the opened file is left as it was");
+    let bytes = std::fs::read(dir.join("contract_Redacted.pdf")).unwrap();
+    assert!(!bytes.windows(4).any(|w| w == b"4567"), "the copy has no trace of the number");
+    // Redacting the redacted copy again proposes the same name, with one suffix.
+    let copy = ok(&mut a, "doc_open", json!({ "path": "contract_Redacted.pdf" }))["doc"].as_u64().unwrap();
+    ok(&mut a, "redact_mark", json!({ "doc": copy, "find": "today" }));
+    assert_eq!(ok(&mut a, "redact_apply", json!({ "doc": copy }))["save_as"], "contract_Redacted.pdf");
+}
+
 #[test]
 fn redacting_with_a_caller_regex_through_tools() {
     let dir = workdir("redact-regex");
diff --git a/crates/engine/src/lib.rs b/crates/engine/src/lib.rs
index 0dc7c231cb..8923ed0c6d 100644
--- a/crates/engine/src/lib.rs
+++ b/crates/engine/src/lib.rs
@@ -132,6 +132,7 @@ pub use pdfcraft_redact::codes::{CODE_SETS as REDACTION_CODE_SETS, CodeSet as Re
 pub use pdfcraft_redact::patterns::{
     MAX_WORDS as REDACT_MAX_WORDS, PATTERNS as REDACT_PATTERNS, Pattern as RedactPattern, find as find_pattern, word_list as redact_word_list,
 };
+pub use pdfcraft_redact::redacted_file_name;
 pub use pdfcraft_redact::sanitize::{HIDDEN, Hidden};
 pub use pdfcraft_redact::user_regex::{UserRegex as RedactRegex, VALIDATORS as REDACT_VALIDATORS, Validator as RedactValidator};
 pub use pdfcraft_sign as sign;
diff --git a/crates/redact/src/lib.rs b/crates/redact/src/lib.rs
index 12cd3f6232..55a263f98b 100644
--- a/crates/redact/src/lib.rs
+++ b/crates/redact/src/lib.rs
@@ -1009,3 +1009,15 @@ pub fn clear_marks(doc: &mut Document, pages: Option<&[usize]>) -> Result<usize,
     }
     Ok(targets.len())
 }
+
+/// The name to save a document under after [`apply`]: `_Redacted` before the extension, as
+/// Acrobat appends it ("contract.pdf" gives "contract_Redacted.pdf"). The `.pdf` extension is
+/// matched in any letter case. A name that already ends in `_Redacted` keeps it once.
+pub fn redacted_file_name(name: &str) -> String {
+    let cut = name.len().saturating_sub(4);
+    let stem = match (name.get(..cut), name.get(cut..)) {
+        (Some(stem), Some(ext)) if ext.eq_ignore_ascii_case(".pdf") => stem,
+        _ => name,
+    };
+    if stem.ends_with("_Redacted") { format!("{stem}.pdf") } else { format!("{stem}_Redacted.pdf") }
+}
diff --git a/crates/redact/src/tests.rs b/crates/redact/src/tests.rs
index d4d16920ef..af4c87d1e3 100644
--- a/crates/redact/src/tests.rs
+++ b/crates/redact/src/tests.rs
@@ -2319,6 +2319,17 @@ fn clearing_marks_leaves_the_annotation_list_as_it_was() {
     assert_eq!((doc.get(page), doc.get(list)), before, "the page points at its array, which lists the link alone");
 }
 
+#[test]
+fn redacted_copies_are_named_with_redacted_before_the_extension() {
+    assert_eq!(redacted_file_name("contract.pdf"), "contract_Redacted.pdf");
+    assert_eq!(redacted_file_name("SCAN.PDF"), "SCAN_Redacted.pdf");
+    assert_eq!(redacted_file_name("Report.Pdf"), "Report_Redacted.pdf");
+    // A document without the extension (opened from bytes) gets it.
+    assert_eq!(redacted_file_name("Untitled"), "Untitled_Redacted.pdf");
+    // Redacting a redacted copy again does not add a second suffix.
+    assert_eq!(redacted_file_name("contract_Redacted.pdf"), "contract_Redacted.pdf");
+}
+
 #[test]
 fn unreadable_content_fails_closed() {
     let mut doc = one_page(b"", "", vec![]);
diff --git a/crates/ui-egui/src/canvas.rs b/crates/ui-egui/src/canvas.rs
index 4ddb913985..f23c359020 100644
--- a/crates/ui-egui/src/canvas.rs
+++ b/crates/ui-egui/src/canvas.rs
@@ -715,6 +715,24 @@ pub struct DocView {
     /// Redact tool: the box being drawn, and a mark to add (page, quads) for the app to style.
     pub redact_drag: crate::redact_ui::AreaDrag,
     pub pending_redaction: Option<(usize, Vec<[f64; 8]>)>,
+    /// How many Apply redactions steps are in effect in this view. While it is above 0, Save
+    /// proposes the name with `_Redacted` ([`pdfcraft_engine::redacted_file_name`]), and while it is
+    /// above `redactions_downloaded`, Save asks where.
+    /// Undo of an Apply redactions step takes one off and Redo adds it back. Reload and a desktop
+    /// save set it to 0, and Revert sets it to `redactions_downloaded`; after a desktop save the document has the name it was saved
+    /// under. A web download keeps it, so later downloads carry the `_Redacted` name.
+    pub redactions_applied: usize,
+    /// How many Apply redactions steps saved into the document's file are undone in this view.
+    /// While it is above 0, Save asks where, so the restored content is not written over the
+    /// redacted file. Redo takes one off. Revert, Reload and a desktop save set it to 0.
+    pub redactions_undone_after_save: usize,
+    /// Set when Apply redactions runs while saved Apply redactions steps are undone: Redo can no
+    /// longer bring those steps back, so Save asks where until a desktop save or Revert clears it.
+    pub saved_redactions_cut_off: bool,
+    /// `redactions_applied` at the last web download, which Revert restores. While
+    /// `redactions_applied` is below it, a delivered step is undone and Save asks where. A desktop
+    /// save leaves it at 0.
+    pub redactions_downloaded: usize,
     /// A crop rectangle being dragged (Crop tool).
     pub crop_drag: crate::crop::CropDrag,
     /// Enhance ▸ Camera image: the quadrilateral being placed.
@@ -1130,6 +1148,10 @@ impl DocView {
             links: Default::default(),
             redact_drag: None,
             pending_redaction: None,
+            redactions_applied: 0,
+            redactions_undone_after_save: 0,
+            saved_redactions_cut_off: false,
+            redactions_downloaded: 0,
             crop_drag: None,
             camera: None,
             camera_done: None,
diff --git a/crates/ui-egui/src/dialogs.rs b/crates/ui-egui/src/dialogs.rs
index 1db3be1218..e36a3a59ed 100644
--- a/crates/ui-egui/src/dialogs.rs
+++ b/crates/ui-egui/src/dialogs.rs
@@ -1885,6 +1885,15 @@ fn finish_redactions_and_fields(app: &mut PdfCraftApp, req: &mut Pending) {
         Some(Dialog::RedactApply) => {
             let marks = app.active_ids().and_then(|(_, id)| app.session.get(id)).map_or(0, |d| d.redaction_marks());
             if app.apply_edit(Edit::ApplyRedactions { pages: None }) {
+                if let Some(view) = app.active.and_then(|i| app.views.get_mut(i)) {
+                    let delivered_undone = view.redactions_applied < view.redactions_downloaded;
+                    view.redactions_applied = view.redactions_applied.saturating_add(1);
+                    // A new step clears the redo history, so the undone saved steps can't come back.
+                    if view.redactions_undone_after_save > 0 || delivered_undone {
+                        view.redactions_undone_after_save = 0;
+                        view.saved_redactions_cut_off = true;
+                    }
+                }
                 if let Some((_, id)) = app.active_ids() {
                     app.renew_recovery(id);
                 }
diff --git a/crates/ui-egui/src/editing.rs b/crates/ui-egui/src/editing.rs
index 46f4683c8a..40e5df96b9 100644
--- a/crates/ui-egui/src/editing.rs
+++ b/crates/ui-egui/src/editing.rs
@@ -20,7 +20,7 @@ pub use save::{SaveTarget, write_atomically};
 #[cfg(test)]
 pub(crate) use save::{is_mail_temp_copy, save_dialog_folder};
 #[cfg(test)]
-use save::{write_atomically_syncing, write_atomically_with};
+use save::{unredacted_file_name, write_atomically_syncing, write_atomically_with};
 
 /// Text typed into a new text box that isn't added to the page yet.
 fn new_text_typed(v: &crate::DocView) -> bool {
@@ -380,6 +380,17 @@ impl PdfCraftApp {
                     view.comments.selected = None;
                     view.comments.history_stepped();
                 }
+                if label == (Edit::ApplyRedactions { pages: None }).label() {
+                    let view = &mut self.views[i];
+                    let (applied, undone) = (view.redactions_applied, view.redactions_undone_after_save);
+                    // Undo past the last save counts as undone; Redo first takes those back.
+                    match (undo, applied, undone) {
+                        (true, 0, _) => view.redactions_undone_after_save = undone.saturating_add(1),
+                        (true, _, _) => view.redactions_applied = applied.saturating_sub(1),
+                        (false, _, 0) => view.redactions_applied = applied.saturating_add(1),
+                        (false, _, _) => view.redactions_undone_after_save = undone.saturating_sub(1),
+                    }
+                }
                 let label = crate::i18n::edit_label(&label);
                 if undo {
                     self.notify_fmt("Undid {label}", &[("label", &label)]);
diff --git a/crates/ui-egui/src/editing/close.rs b/crates/ui-egui/src/editing/close.rs
index c6d91b64e8..d891d4474e 100644
--- a/crates/ui-egui/src/editing/close.rs
+++ b/crates/ui-egui/src/editing/close.rs
@@ -94,6 +94,11 @@ impl PdfCraftApp {
                     view.forms.committed = None;
                     view.forms.unbaked.clear();
                     view.pending_edit = None;
+                    // The redactions applied since the last save are discarded too. Those in the
+                    // last web download stay, so later downloads keep the `_Redacted` name.
+                    view.redactions_applied = view.redactions_downloaded;
+                    view.redactions_undone_after_save = 0;
+                    view.saved_redactions_cut_off = false;
                 }
                 self.notify_tr("Reverted to the last saved version");
             }
diff --git a/crates/ui-egui/src/editing/save.rs b/crates/ui-egui/src/editing/save.rs
index 35867559f6..fe9e0f8b81 100644
--- a/crates/ui-egui/src/editing/save.rs
+++ b/crates/ui-egui/src/editing/save.rs
@@ -50,6 +50,21 @@ impl PdfCraftApp {
         let Some(id) = self.views.get(index).map(|v| v.id) else { return false };
         let Some(doc) = self.session.get(id) else { return false };
         let (name, path) = (doc.name.clone(), doc.path.clone());
+        // After Apply redactions, Save asks where and proposes the name with `_Redacted`.
+        // In the web build a delivered step stays counted, so only the steps applied since the
+        // last delivery make Save ask where.
+        let redacted = self.views.get(index).is_some_and(|v| v.redactions_applied > 0);
+        let not_delivered = self.views.get(index).is_some_and(|v| v.redactions_applied > v.redactions_downloaded);
+        let name = if redacted { pdfcraft_engine::redacted_file_name(&name) } else { name };
+        // Undo past a saved Apply redactions brings back content that the file on disk has
+        // redacted: ask where instead of writing it over that file. In the web build a delivered
+        // step stays counted in `redactions_applied`, so fewer steps than were delivered means one
+        // was undone.
+        let unredacted = self.views.get(index).is_some_and(restores_saved_redactions);
+        // The restored content is not a redacted copy: propose the name without `_Redacted`, so
+        // the dialog's default is not the redacted file.
+        let name = if unredacted && !redacted { unredacted_file_name(&name) } else { name };
+        let target = if not_delivered || unredacted { SaveTarget::As } else { target };
         #[cfg(not(target_arch = "wasm32"))]
         {
             let doc_path = path.clone();
@@ -66,6 +81,14 @@ impl PdfCraftApp {
                     let dialog = in_document_folder(dialog, doc_path.as_deref());
                     // The bytes are taken once the user has chosen, so edits made meanwhile are saved too.
                     self.ask_one(crate::pickers::Ask::Save(dialog), None, move |app, dest| {
+                        // An Apply redactions or an Undo of one while the dialog was open makes the
+                        // name it proposed wrong: ask again with the name for the current content.
+                        let asked = (redacted, unredacted);
+                        let changed = |v: &crate::DocView| v.id == id && (v.redactions_applied > 0, restores_saved_redactions(v)) != asked;
+                        if let Some(index) = app.views.iter().position(changed) {
+                            app.save_then(index, SaveTarget::As, after);
+                            return;
+                        }
                         app.save_doc_to_then(id, &dest.to_string_lossy(), target, Box::new(after));
                     });
                     return false;
@@ -100,6 +123,9 @@ impl PdfCraftApp {
                         && let Some(view) = self.views.get_mut(index)
                     {
                         view.document_changed(&doc.info);
+                        // `redactions_applied` stays set: the document keeps its name here, so
+                        // later downloads are named after the redacted copy too.
+                        view.redactions_downloaded = view.redactions_applied;
                     }
                     // The host reports where the file went (and any failure) itself.
                     if !to_host {
@@ -206,6 +232,9 @@ impl PdfCraftApp {
                 // Saving over a version that changed on disk keeps this one: nothing to ask.
                 for view in self.views.iter_mut().filter(|v| v.id == id) {
                     view.disk_changed = false;
+                    view.redactions_applied = 0;
+                    view.redactions_undone_after_save = 0;
+                    view.saved_redactions_cut_off = false;
                 }
                 self.notify_fmt("Saved {name}", &[("name", &short_name(dest))]);
                 #[cfg(target_os = "macos")]
@@ -244,6 +273,27 @@ pub(crate) fn is_mail_temp_copy(path: &str) -> bool {
         || p.contains("/library/containers/com.apple.mail/data/library/mail downloads/")
 }
 
+/// Whether `view` holds content that a saved or delivered Apply redactions removed: a saved step
+/// is undone, cannot be redone, or (in the web build) fewer steps are in effect than were
+/// delivered.
+fn restores_saved_redactions(view: &crate::DocView) -> bool {
+    view.redactions_undone_after_save > 0 || view.saved_redactions_cut_off || view.redactions_applied < view.redactions_downloaded
+}
+
+/// `name` without the `_Redacted` that [`pdfcraft_engine::redacted_file_name`] adds before the
+/// extension ("contract_Redacted.pdf" gives "contract.pdf"). Any other name is returned as it is.
+pub(crate) fn unredacted_file_name(name: &str) -> String {
+    let cut = name.len().saturating_sub(4);
+    let (stem, ext) = match (name.get(..cut), name.get(cut..)) {
+        (Some(stem), Some(ext)) if ext.eq_ignore_ascii_case(".pdf") => (stem, ext),
+        _ => (name, ""),
+    };
+    match stem.strip_suffix("_Redacted") {
+        Some(base) if !base.is_empty() => format!("{base}{ext}"),
+        _ => name.to_string(),
+    }
+}
+
 /// The folder a Save As style dialog should open in for a document stored at `path`: the
 /// document's own folder, as Acrobat and Foxit do, instead of whichever folder the system picks.
 /// `None` (keep the system's choice) for a new document, a path with no parent, or an email
diff --git a/crates/ui-egui/src/editing/tests.rs b/crates/ui-egui/src/editing/tests.rs
index c0e35329c0..b53ac49305 100644
--- a/crates/ui-egui/src/editing/tests.rs
+++ b/crates/ui-egui/src/editing/tests.rs
@@ -1,4 +1,15 @@
-use super::{SaveTarget, is_mail_temp_copy, save_dialog_folder, write_atomically, write_atomically_syncing, write_atomically_with};
+use super::{
+    SaveTarget, is_mail_temp_copy, save_dialog_folder, unredacted_file_name, write_atomically, write_atomically_syncing, write_atomically_with,
+};
+
+#[test]
+fn restored_content_is_not_proposed_under_the_redacted_name() {
+    assert_eq!(unredacted_file_name("contract_Redacted.pdf"), "contract.pdf");
+    assert_eq!(unredacted_file_name("SCAN_Redacted.PDF"), "SCAN.PDF");
+    assert_eq!(unredacted_file_name("Untitled_Redacted"), "Untitled");
+    assert_eq!(unredacted_file_name("contract.pdf"), "contract.pdf");
+    assert_eq!(unredacted_file_name("_Redacted.pdf"), "_Redacted.pdf");
+}
 
 #[test]
 fn save_dialogs_open_in_the_documents_folder() {
diff --git a/crates/ui-egui/tests/it/redact.rs b/crates/ui-egui/tests/it/redact.rs
index 3e11861cbc..ccb3a267ef 100644
--- a/crates/ui-egui/tests/it/redact.rs
+++ b/crates/ui-egui/tests/it/redact.rs
@@ -4,7 +4,7 @@
 use egui::Pos2;
 use egui_kittest::Harness;
 use egui_kittest::kittest::Queryable;
-use pdfcraft_ui_egui::{Dialog, PdfCraftApp};
+use pdfcraft_ui_egui::{Dialog, PdfCraftApp, SaveTarget};
 
 fn harness() -> Harness<'static, PdfCraftApp> {
     let mut h = Harness::builder().with_size(egui::vec2(1400.0, 900.0)).build_eframe(|_cc| {
@@ -74,6 +74,417 @@ fn marking_applying_and_clearing() {
     assert!(doc.form.is_empty(), "the whole page was redacted, fields included");
 }
 
+/// After Apply redactions, Save asks where instead of writing over the opened file, as Acrobat
+/// shows Save As with `_Redacted` appended to the name. Once that copy is written, Save writes
+/// it in place again.
+#[test]
+fn saving_after_applying_redactions_asks_where() {
+    let dir = std::env::temp_dir().join(format!("pdfcraft-redacted-save-{}", std::process::id()));
+    let _ = std::fs::remove_dir_all(&dir);
+    std::fs::create_dir_all(&dir).unwrap();
+    let original = dir.join("contract.pdf");
+    let source = include_bytes!("../data/form.pdf").to_vec();
+    std::fs::write(&original, &source).unwrap();
+    let path = original.to_string_lossy().into_owned();
+    let mut h = Harness::builder().with_size(egui::vec2(1400.0, 900.0)).build_eframe(move |_cc| {
+        let mut app = PdfCraftApp::new();
+        app.set_option("language", "en").unwrap();
+        app.open_path(&path);
+        app
+    });
+    crate::support::settle(&mut h);
+    h.state_mut().execute("redact.pages");
+    h.run_steps(2);
+    h.get_by_label("OK").click();
+    h.run_steps(3);
+    assert_eq!(marks(&h), 1);
+    assert!(h.state_mut().execute("redact.apply"));
+    h.run_steps(2);
+    h.get_by_label("Apply").click();
+    h.run_steps(4);
+    assert_eq!(marks(&h), 0);
+    assert_eq!(h.state().views[0].redactions_applied, 1);
+    let copy = dir.join("contract_Redacted.pdf");
+    h.state_mut().pick_override = Some(vec![copy.to_string_lossy().into_owned()]);
+    assert!(!h.state_mut().save_active(SaveTarget::InPlace), "Save asks where first");
+    h.run_steps(3);
+    assert_eq!(std::fs::read(&original).unwrap(), source, "the opened file is left as it was");
+    assert!(copy.exists(), "the redacted copy is written where the user chose");
+    let s = h.state();
+    assert_eq!(s.session.get(s.views[0].id).unwrap().name, "contract_Redacted.pdf");
+    assert_eq!(s.views[0].redactions_applied, 0);
+    h.state_mut().pick_override = None;
+    assert!(h.state_mut().save_active(SaveTarget::InPlace), "the next Save writes the copy in place");
+    let _ = std::fs::remove_dir_all(&dir);
+}
+
+/// Undo past an Apply redactions that is already saved in the `_Redacted` copy makes Save ask
+/// where, so the restored content is not written over the copy. Redo makes Save write in place.
+#[test]
+fn undoing_saved_redactions_does_not_save_over_the_redacted_copy() {
+    let dir = std::env::temp_dir().join(format!("pdfcraft-redacted-saved-undo-{}", std::process::id()));
+    let _ = std::fs::remove_dir_all(&dir);
+    std::fs::create_dir_all(&dir).unwrap();
+    let original = dir.join("contract.pdf");
+    std::fs::write(&original, include_bytes!("../data/form.pdf")).unwrap();
+    let path = original.to_string_lossy().into_owned();
+    let mut h = Harness::builder().with_size(egui::vec2(1400.0, 900.0)).build_eframe(move |_cc| {
+        let mut app = PdfCraftApp::new();
+        app.set_option("language", "en").unwrap();
+        app.open_path(&path);
+        app
+    });
+    crate::support::settle(&mut h);
+    h.state_mut().execute("redact.pages");
+    h.run_steps(2);
+    h.get_by_label("OK").click();
+    h.run_steps(3);
+    assert!(h.state_mut().execute("redact.apply"));
+    h.run_steps(2);
+    h.get_by_label("Apply").click();
+    h.run_steps(4);
+    let copy = dir.join("contract_Redacted.pdf");
+    h.state_mut().pick_override = Some(vec![copy.to_string_lossy().into_owned()]);
+    assert!(!h.state_mut().save_active(SaveTarget::InPlace));
+    h.run_steps(3);
+    h.state_mut().pick_override = None;
+    assert!(copy.exists());
+    // Undo and Redo leave the saved redactions in effect: Save writes the copy in place.
+    h.state_mut().execute("edit.undo");
+    h.run_steps(3);
+    h.state_mut().execute("edit.redo");
+    h.run_steps(3);
+    assert_eq!((h.state().views[0].redactions_applied, h.state().views[0].redactions_undone_after_save), (0, 0));
+    assert!(h.state_mut().save_active(SaveTarget::InPlace), "with the redactions back, Save writes the copy in place");
+    let saved = std::fs::read(&copy).unwrap();
+    h.state_mut().execute("edit.undo");
+    h.run_steps(3);
+    assert_eq!(h.state().views[0].redactions_undone_after_save, 1);
+    let elsewhere = dir.join("contract_restored.pdf");
+    h.state_mut().pick_override = Some(vec![elsewhere.to_string_lossy().into_owned()]);
+    assert!(!h.state_mut().save_active(SaveTarget::InPlace), "Save asks where instead of writing over the copy");
+    h.run_steps(3);
+    h.state_mut().pick_override = None;
+    assert_eq!(std::fs::read(&copy).unwrap(), saved, "the redacted copy is left as it was");
+    assert!(elsewhere.exists(), "the restored version is written where the user chose");
+    assert_eq!(h.state().views[0].redactions_undone_after_save, 0);
+    // The restored version is now the saved one: Redo applies the redactions to it again.
+    h.state_mut().execute("edit.redo");
+    h.run_steps(3);
+    assert_eq!(h.state().views[0].redactions_applied, 1);
+    let _ = std::fs::remove_dir_all(&dir);
+}
+
+/// A new Apply redactions after Undo past a saved one clears Redo, so Undo and Redo of the new
+/// step do not bring Save in place back over the `_Redacted` copy.
+#[test]
+fn redoing_a_new_apply_after_undoing_saved_redactions_still_asks_where() {
+    let dir = std::env::temp_dir().join(format!("pdfcraft-redacted-branch-{}", std::process::id()));
+    let _ = std::fs::remove_dir_all(&dir);
+    std::fs::create_dir_all(&dir).unwrap();
+    let original = dir.join("contract.pdf");
+    std::fs::write(&original, include_bytes!("../data/form.pdf")).unwrap();
+    let path = original.to_string_lossy().into_owned();
+    let mut h = Harness::builder().with_size(egui::vec2(1400.0, 900.0)).build_eframe(move |_cc| {
+        let mut app = PdfCraftApp::new();
+        app.set_option("language", "en").unwrap();
+        app.open_path(&path);
+        app
+    });
+    crate::support::settle(&mut h);
+    h.state_mut().execute("redact.pages");
+    h.run_steps(2);
+    h.get_by_label("OK").click();
+    h.run_steps(3);
+    assert!(h.state_mut().execute("redact.apply"));
+    h.run_steps(2);
+    h.get_by_label("Apply").click();
+    h.run_steps(4);
+    let copy = dir.join("contract_Redacted.pdf");
+    h.state_mut().pick_override = Some(vec![copy.to_string_lossy().into_owned()]);
+    assert!(!h.state_mut().save_active(SaveTarget::InPlace));
+    h.run_steps(3);
+    h.state_mut().pick_override = None;
+    let saved = std::fs::read(&copy).unwrap();
+    h.state_mut().execute("edit.undo");
+    h.run_steps(3);
+    // Apply the marks again as a new step, then Undo and Redo it.
+    assert!(h.state_mut().execute("redact.apply"));
+    h.run_steps(2);
+    h.get_by_label("Apply").click();
+    h.run_steps(4);
+    h.state_mut().execute("edit.undo");
+    h.run_steps(3);
+    let view = &h.state().views[0];
+    assert_eq!((view.redactions_applied, view.redactions_undone_after_save, view.saved_redactions_cut_off), (0, 0, true));
+    h.state_mut().execute("edit.redo");
+    h.run_steps(3);
+    let elsewhere = dir.join("contract_again.pdf");
+    h.state_mut().pick_override = Some(vec![elsewhere.to_string_lossy().into_owned()]);
+    assert!(!h.state_mut().save_active(SaveTarget::InPlace), "Save asks where instead of writing over the copy");
+    h.run_steps(3);
+    h.state_mut().pick_override = None;
+    assert_eq!(std::fs::read(&copy).unwrap(), saved, "the redacted copy is left as it was");
+    assert!(!h.state().views[0].saved_redactions_cut_off);
+    let _ = std::fs::remove_dir_all(&dir);
+}
+
+/// In the web build a delivered save keeps `redactions_applied` and records it in
+/// `redactions_downloaded`. Undo past a delivered Apply redactions, or a new Apply after it, makes
+/// Save ask where, so a host does not write the restored content over the redacted copy.
+#[test]
+fn undoing_delivered_redactions_asks_where() {
+    let dir = std::env::temp_dir().join(format!("pdfcraft-redacted-delivered-{}", std::process::id()));
+    let _ = std::fs::remove_dir_all(&dir);
+    std::fs::create_dir_all(&dir).unwrap();
+    let original = dir.join("contract.pdf");
+    std::fs::write(&original, include_bytes!("../data/form.pdf")).unwrap();
+    let path = original.to_string_lossy().into_owned();
+    let mut h = Harness::builder().with_size(egui::vec2(1400.0, 900.0)).build_eframe(move |_cc| {
+        let mut app = PdfCraftApp::new();
+        app.set_option("language", "en").unwrap();
+        app.open_path(&path);
+        app
+    });
+    crate::support::settle(&mut h);
+    h.state_mut().execute("redact.pages");
+    h.run_steps(2);
+    h.get_by_label("OK").click();
+    h.run_steps(3);
+    assert!(h.state_mut().execute("redact.apply"));
+    h.run_steps(2);
+    h.get_by_label("Apply").click();
+    h.run_steps(4);
+    // The state a web save leaves: the step is delivered and stays counted.
+    h.state_mut().views[0].redactions_downloaded = 1;
+    h.state_mut().execute("edit.undo");
+    h.run_steps(3);
+    let elsewhere = dir.join("contract_restored.pdf");
+    h.state_mut().pick_override = Some(vec![elsewhere.to_string_lossy().into_owned()]);
+    assert!(!h.state_mut().save_active(SaveTarget::InPlace), "Save asks where after Undo past a delivered step");
+    h.run_steps(3);
+    h.state_mut().pick_override = None;
+    assert!(elsewhere.exists());
+    // A new Apply after Undo past a delivered step cannot be redone back to the delivered one.
+    h.state_mut().views[0].redactions_downloaded = 1;
+    h.state_mut().views[0].redactions_applied = 0;
+    h.state_mut().execute("redact.pages");
+    h.run_steps(2);
+    h.get_by_label("OK").click();
+    h.run_steps(3);
+    assert!(h.state_mut().execute("redact.apply"));
+    h.run_steps(2);
+    h.get_by_label("Apply").click();
+    h.run_steps(4);
+    assert!(h.state().views[0].saved_redactions_cut_off);
+    let _ = std::fs::remove_dir_all(&dir);
+}
+
+/// Once every Apply redactions step is delivered, Save writes in place again even though the web
+/// build keeps the steps counted for the `_Redacted` name.
+#[test]
+fn delivered_redactions_save_in_place() {
+    let dir = std::env::temp_dir().join(format!("pdfcraft-redacted-delivered-save-{}", std::process::id()));
+    let _ = std::fs::remove_dir_all(&dir);
+    std::fs::create_dir_all(&dir).unwrap();
+    let original = dir.join("contract.pdf");
+    std::fs::write(&original, include_bytes!("../data/form.pdf")).unwrap();
+    let path = original.to_string_lossy().into_owned();
+    let mut h = Harness::builder().with_size(egui::vec2(1400.0, 900.0)).build_eframe(move |_cc| {
+        let mut app = PdfCraftApp::new();
+        app.set_option("language", "en").unwrap();
+        app.open_path(&path);
+        app
+    });
+    crate::support::settle(&mut h);
+    h.state_mut().execute("redact.pages");
+    h.run_steps(2);
+    h.get_by_label("OK").click();
+    h.run_steps(3);
+    assert!(h.state_mut().execute("redact.apply"));
+    h.run_steps(2);
+    h.get_by_label("Apply").click();
+    h.run_steps(4);
+    // The state a web save leaves: the step is delivered and stays counted.
+    h.state_mut().views[0].redactions_downloaded = 1;
+    assert!(h.state_mut().save_active(SaveTarget::InPlace), "Save writes in place after the step is delivered");
+    let _ = std::fs::remove_dir_all(&dir);
+}
+
+/// Undo past a saved Apply redactions while the Save dialog is open makes Save ask again, so the
+/// restored content is not written to the redacted copy the dialog proposed.
+#[test]
+fn undoing_saved_redactions_while_the_save_dialog_is_open_asks_again() {
+    let dir = std::env::temp_dir().join(format!("pdfcraft-redacted-dialog-undo-{}", std::process::id()));
+    let _ = std::fs::remove_dir_all(&dir);
+    std::fs::create_dir_all(&dir).unwrap();
+    let original = dir.join("contract.pdf");
+    std::fs::write(&original, include_bytes!("../data/form.pdf")).unwrap();
+    let path = original.to_string_lossy().into_owned();
+    let mut h = Harness::builder().with_size(egui::vec2(1400.0, 900.0)).build_eframe(move |_cc| {
+        let mut app = PdfCraftApp::new();
+        app.set_option("language", "en").unwrap();
+        app.open_path(&path);
+        app
+    });
+    crate::support::settle(&mut h);
+    let apply = |h: &mut Harness<'static, PdfCraftApp>| {
+        h.state_mut().execute("redact.pages");
+        h.run_steps(2);
+        h.get_by_label("OK").click();
+        h.run_steps(3);
+        assert!(h.state_mut().execute("redact.apply"));
+        h.run_steps(2);
+        h.get_by_label("Apply").click();
+        h.run_steps(4);
+    };
+    apply(&mut h);
+    let copy = dir.join("contract_Redacted.pdf");
+    h.state_mut().pick_override = Some(vec![copy.to_string_lossy().into_owned()]);
+    assert!(!h.state_mut().save_active(SaveTarget::InPlace));
+    h.run_steps(3);
+    let saved = std::fs::read(&copy).unwrap();
+    // A second Apply redactions makes Save ask where. Before the answer, Undo takes back the
+    // second Apply, its marks and the saved Apply.
+    apply(&mut h);
+    assert!(!h.state_mut().save_active(SaveTarget::InPlace));
+    for _ in 0..3 {
+        h.state_mut().execute("edit.undo");
+    }
+    assert_eq!(h.state().views[0].redactions_undone_after_save, 1);
+    let elsewhere = dir.join("contract_restored.pdf");
+    h.state_mut().pick_override = Some(vec![elsewhere.to_string_lossy().into_owned()]);
+    h.run_steps(4);
+    h.state_mut().pick_override = None;
+    assert_eq!(std::fs::read(&copy).unwrap(), saved, "the redacted copy is left as it was");
+    assert!(elsewhere.exists(), "Save asked again and wrote where the user chose");
+    let _ = std::fs::remove_dir_all(&dir);
+}
+
+/// Undo of Apply redactions while the Save dialog that proposed the `_Redacted` name is open
+/// makes Save ask again, so the unredacted content is not saved under that name.
+#[test]
+fn undoing_apply_redactions_while_the_save_dialog_is_open_asks_again() {
+    let dir = std::env::temp_dir().join(format!("pdfcraft-redacted-dialog-unapply-{}", std::process::id()));
+    let _ = std::fs::remove_dir_all(&dir);
+    std::fs::create_dir_all(&dir).unwrap();
+    let original = dir.join("contract.pdf");
+    std::fs::write(&original, include_bytes!("../data/form.pdf")).unwrap();
+    let path = original.to_string_lossy().into_owned();
+    let mut h = Harness::builder().with_size(egui::vec2(1400.0, 900.0)).build_eframe(move |_cc| {
+        let mut app = PdfCraftApp::new();
+        app.set_option("language", "en").unwrap();
+        app.open_path(&path);
+        app
+    });
+    crate::support::settle(&mut h);
+    h.state_mut().execute("redact.pages");
+    h.run_steps(2);
+    h.get_by_label("OK").click();
+    h.run_steps(3);
+    assert!(h.state_mut().execute("redact.apply"));
+    h.run_steps(2);
+    h.get_by_label("Apply").click();
+    h.run_steps(4);
+    let copy = dir.join("contract_Redacted.pdf");
+    h.state_mut().pick_override = Some(vec![copy.to_string_lossy().into_owned()]);
+    assert!(!h.state_mut().save_active(SaveTarget::InPlace));
+    h.state_mut().execute("edit.undo");
+    assert_eq!(h.state().views[0].redactions_applied, 0);
+    let elsewhere = dir.join("contract_copy.pdf");
+    h.state_mut().pick_override = Some(vec![elsewhere.to_string_lossy().into_owned()]);
+    h.run_steps(4);
+    h.state_mut().pick_override = None;
+    assert!(!copy.exists(), "the unredacted content is not saved under the _Redacted name");
+    assert!(elsewhere.exists(), "Save asked again and wrote where the user chose");
+    let _ = std::fs::remove_dir_all(&dir);
+}
+
+/// Undo of Apply redactions brings back Save in place; Redo makes Save ask where again.
+#[test]
+fn undoing_apply_redactions_saves_in_place_again() {
+    let dir = std::env::temp_dir().join(format!("pdfcraft-redacted-undo-{}", std::process::id()));
+    let _ = std::fs::remove_dir_all(&dir);
+    std::fs::create_dir_all(&dir).unwrap();
+    let original = dir.join("contract.pdf");
+    std::fs::write(&original, include_bytes!("../data/form.pdf")).unwrap();
+    let path = original.to_string_lossy().into_owned();
+    let mut h = Harness::builder().with_size(egui::vec2(1400.0, 900.0)).build_eframe(move |_cc| {
+        let mut app = PdfCraftApp::new();
+        app.set_option("language", "en").unwrap();
+        app.open_path(&path);
+        app
+    });
+    crate::support::settle(&mut h);
+    for _ in 0..2 {
+        h.state_mut().execute("redact.pages");
+        h.run_steps(2);
+        h.get_by_label("OK").click();
+        h.run_steps(3);
+        assert!(h.state_mut().execute("redact.apply"));
+        h.run_steps(2);
+        h.get_by_label("Apply").click();
+        h.run_steps(4);
+    }
+    assert_eq!(h.state().views[0].redactions_applied, 2);
+    h.state_mut().execute("edit.undo");
+    h.run_steps(3);
+    assert_eq!(h.state().views[0].redactions_applied, 1, "the first Apply redactions is still in effect");
+    // Undoing the second mark leaves the first Apply redactions in effect.
+    h.state_mut().execute("edit.undo");
+    h.run_steps(3);
+    assert_eq!(h.state().views[0].redactions_applied, 1);
+    h.state_mut().execute("edit.undo");
+    h.run_steps(3);
+    assert_eq!(h.state().views[0].redactions_applied, 0);
+    h.state_mut().execute("edit.redo");
+    h.run_steps(3);
+    assert_eq!(h.state().views[0].redactions_applied, 1);
+    h.state_mut().execute("edit.undo");
+    h.run_steps(3);
+    assert!(h.state_mut().save_active(SaveTarget::InPlace), "with the redactions undone, Save writes in place");
+    let s = h.state();
+    assert_eq!(s.session.get(s.views[0].id).unwrap().name, "contract.pdf");
+    let _ = std::fs::remove_dir_all(&dir);
+}
+
+/// File ▸ Revert discards the applied redactions, so Save writes the opened file in place again.
+#[test]
+fn reverting_after_apply_redactions_saves_in_place_again() {
+    let dir = std::env::temp_dir().join(format!("pdfcraft-redacted-revert-{}", std::process::id()));
+    let _ = std::fs::remove_dir_all(&dir);
+    std::fs::create_dir_all(&dir).unwrap();
+    let original = dir.join("contract.pdf");
+    std::fs::write(&original, include_bytes!("../data/form.pdf")).unwrap();
+    let path = original.to_string_lossy().into_owned();
+    let mut h = Harness::builder().with_size(egui::vec2(1400.0, 900.0)).build_eframe(move |_cc| {
+        let mut app = PdfCraftApp::new();
+        app.set_option("language", "en").unwrap();
+        app.open_path(&path);
+        app
+    });
+    crate::support::settle(&mut h);
+    h.state_mut().execute("redact.pages");
+    h.run_steps(2);
+    h.get_by_label("OK").click();
+    h.run_steps(3);
+    assert!(h.state_mut().execute("redact.apply"));
+    h.run_steps(2);
+    h.get_by_label("Apply").click();
+    h.run_steps(4);
+    assert_eq!(h.state().views[0].redactions_applied, 1);
+    assert!(h.state_mut().execute("file.revert"));
+    h.run_steps(2);
+    assert_eq!(h.state().dialog, Some(Dialog::Revert));
+    h.get_all_by_label("Revert").last().expect("the button").click();
+    h.run_steps(3);
+    assert_eq!(h.state().views[0].redactions_applied, 0);
+    assert!(h.state_mut().save_active(SaveTarget::InPlace), "after Revert, Save writes in place");
+    let s = h.state();
+    assert_eq!(s.session.get(s.views[0].id).unwrap().name, "contract.pdf");
+    let _ = std::fs::remove_dir_all(&dir);
+}
+
 #[test]
 fn redaction_codes_become_the_overlay_text() {
     let mut h = harness();
diff --git a/parity/acrobat-features.toml b/parity/acrobat-features.toml
index 8288146bee..eceeee30fc 100644
--- a/parity/acrobat-features.toml
+++ b/parity/acrobat-features.toml
@@ -6000,11 +6000,11 @@ title = "Add a suffix to redacted file names"
 area = "G"
 tier = "P3"
 milestone = "M8"
-status = "planned"
-commands = []
-tools = []
-evidence = []
-notes = ""
+status = "shipped"
+commands = ["redact.apply", "file.save"]
+tools = ["redact_apply"]
+evidence = ["crates/ui-egui/tests/it/redact.rs::saving_after_applying_redactions_asks_where", "crates/automation/tests/it/automation.rs::applying_redactions_proposes_the_name_with_redacted", "crates/redact/src/tests.rs::redacted_copies_are_named_with_redacted_before_the_extension"]
+notes = "After Apply redactions, Save asks where and proposes the name with _Redacted before the extension (contract.pdf gives contract_Redacted.pdf; a name already ending in _Redacted keeps one); the web build downloads under that name. redact_apply returns the same name in save_as, for doc_save's path; doc_save without a path still writes in place. The suffix is fixed: there is no preference to change it or to use a prefix."
 
 [[feature]]
 id = "protect.redact-ai-suggestions"