diff --git a/pixstrip-gtk/src/main.rs b/pixstrip-gtk/src/main.rs
index e8ce251..99f055f 100644
--- a/pixstrip-gtk/src/main.rs
+++ b/pixstrip-gtk/src/main.rs
@@ -1,5 +1,6 @@
 mod app;
 mod step_indicator;
+mod steps;
 mod wizard;
 
 use gtk::prelude::*;
diff --git a/pixstrip-gtk/src/steps/mod.rs b/pixstrip-gtk/src/steps/mod.rs
new file mode 100644
index 0000000..8e39277
--- /dev/null
+++ b/pixstrip-gtk/src/steps/mod.rs
@@ -0,0 +1,7 @@
+pub mod step_compress;
+pub mod step_convert;
+pub mod step_images;
+pub mod step_metadata;
+pub mod step_output;
+pub mod step_resize;
+pub mod step_workflow;
diff --git a/pixstrip-gtk/src/steps/step_compress.rs b/pixstrip-gtk/src/steps/step_compress.rs
new file mode 100644
index 0000000..58b3687
--- /dev/null
+++ b/pixstrip-gtk/src/steps/step_compress.rs
@@ -0,0 +1,125 @@
+use adw::prelude::*;
+
+pub fn build_compress_page() -> adw::NavigationPage {
+    let scrolled = gtk::ScrolledWindow::builder()
+        .hscrollbar_policy(gtk::PolicyType::Never)
+        .vexpand(true)
+        .build();
+
+    let content = gtk::Box::builder()
+        .orientation(gtk::Orientation::Vertical)
+        .spacing(12)
+        .margin_top(12)
+        .margin_bottom(12)
+        .margin_start(24)
+        .margin_end(24)
+        .build();
+
+    // Enable toggle
+    let enable_row = adw::SwitchRow::builder()
+        .title("Enable Compression")
+        .subtitle("Reduce file size with quality control")
+        .active(true)
+        .build();
+
+    let enable_group = adw::PreferencesGroup::new();
+    enable_group.add(&enable_row);
+    content.append(&enable_group);
+
+    // Quality slider
+    let quality_group = adw::PreferencesGroup::builder()
+        .title("Quality Level")
+        .description("Higher quality means larger files")
+        .build();
+
+    let quality_scale = gtk::Scale::builder()
+        .orientation(gtk::Orientation::Horizontal)
+        .adjustment(&gtk::Adjustment::new(3.0, 1.0, 5.0, 1.0, 1.0, 0.0))
+        .draw_value(false)
+        .hexpand(true)
+        .build();
+    quality_scale.set_round_digits(0);
+
+    // Add named marks
+    quality_scale.add_mark(1.0, gtk::PositionType::Bottom, Some("Web"));
+    quality_scale.add_mark(2.0, gtk::PositionType::Bottom, Some("Low"));
+    quality_scale.add_mark(3.0, gtk::PositionType::Bottom, Some("Medium"));
+    quality_scale.add_mark(4.0, gtk::PositionType::Bottom, Some("High"));
+    quality_scale.add_mark(5.0, gtk::PositionType::Bottom, Some("Maximum"));
+
+    let quality_label = gtk::Label::builder()
+        .label("Medium - Good balance of quality and size")
+        .css_classes(["dim-label"])
+        .margin_top(4)
+        .build();
+
+    let quality_box = gtk::Box::builder()
+        .orientation(gtk::Orientation::Vertical)
+        .spacing(4)
+        .margin_top(8)
+        .margin_bottom(8)
+        .margin_start(12)
+        .margin_end(12)
+        .build();
+    quality_box.append(&quality_scale);
+    quality_box.append(&quality_label);
+
+    quality_group.add(&quality_box);
+    content.append(&quality_group);
+
+    // Size estimation placeholder
+    let estimate_group = adw::PreferencesGroup::builder()
+        .title("Size Estimation")
+        .description("Load images to see real compression results")
+        .build();
+
+    let estimate_row = adw::ActionRow::builder()
+        .title("Estimated savings")
+        .subtitle("Add images to see file size comparison")
+        .build();
+    estimate_row.add_prefix(&gtk::Image::from_icon_name("drive-harddisk-symbolic"));
+
+    estimate_group.add(&estimate_row);
+    content.append(&estimate_group);
+
+    // Advanced options
+    let advanced_group = adw::PreferencesGroup::builder()
+        .title("Advanced Options")
+        .build();
+
+    let jpeg_row = adw::SpinRow::builder()
+        .title("JPEG Quality")
+        .subtitle("1-100, higher is better quality")
+        .adjustment(&gtk::Adjustment::new(85.0, 1.0, 100.0, 1.0, 10.0, 0.0))
+        .build();
+
+    let png_row = adw::SpinRow::builder()
+        .title("PNG Compression Level")
+        .subtitle("1-6, higher is slower but smaller")
+        .adjustment(&gtk::Adjustment::new(3.0, 1.0, 6.0, 1.0, 1.0, 0.0))
+        .build();
+
+    let webp_row = adw::SpinRow::builder()
+        .title("WebP Quality")
+        .subtitle("1-100, higher is better quality")
+        .adjustment(&gtk::Adjustment::new(80.0, 1.0, 100.0, 1.0, 10.0, 0.0))
+        .build();
+
+    advanced_group.add(&jpeg_row);
+    advanced_group.add(&png_row);
+    advanced_group.add(&webp_row);
+    content.append(&advanced_group);
+
+    scrolled.set_child(Some(&content));
+
+    let clamp = adw::Clamp::builder()
+        .maximum_size(600)
+        .child(&scrolled)
+        .build();
+
+    adw::NavigationPage::builder()
+        .title("Compress")
+        .tag("step-compress")
+        .child(&clamp)
+        .build()
+}
diff --git a/pixstrip-gtk/src/steps/step_convert.rs b/pixstrip-gtk/src/steps/step_convert.rs
new file mode 100644
index 0000000..0951c86
--- /dev/null
+++ b/pixstrip-gtk/src/steps/step_convert.rs
@@ -0,0 +1,107 @@
+use adw::prelude::*;
+
+pub fn build_convert_page() -> adw::NavigationPage {
+    let scrolled = gtk::ScrolledWindow::builder()
+        .hscrollbar_policy(gtk::PolicyType::Never)
+        .vexpand(true)
+        .build();
+
+    let content = gtk::Box::builder()
+        .orientation(gtk::Orientation::Vertical)
+        .spacing(12)
+        .margin_top(12)
+        .margin_bottom(12)
+        .margin_start(24)
+        .margin_end(24)
+        .build();
+
+    // Enable toggle
+    let enable_row = adw::SwitchRow::builder()
+        .title("Enable Format Conversion")
+        .subtitle("Convert images to a different format")
+        .active(false)
+        .build();
+
+    let enable_group = adw::PreferencesGroup::new();
+    enable_group.add(&enable_row);
+    content.append(&enable_group);
+
+    // Format selection
+    let format_group = adw::PreferencesGroup::builder()
+        .title("Output Format")
+        .build();
+
+    let formats = [
+        ("Keep Original", "No conversion - output in same format as input"),
+        ("JPEG", "Universal photo format, lossy compression"),
+        ("PNG", "Lossless format, good for graphics and screenshots"),
+        ("WebP", "Modern web format, excellent compression, wide support"),
+        ("AVIF", "Next-gen format, best compression, growing support"),
+    ];
+
+    let format_flow = gtk::FlowBox::builder()
+        .selection_mode(gtk::SelectionMode::Single)
+        .max_children_per_line(5)
+        .min_children_per_line(2)
+        .row_spacing(8)
+        .column_spacing(8)
+        .homogeneous(true)
+        .build();
+
+    for (name, desc) in &formats {
+        let card = gtk::Box::builder()
+            .orientation(gtk::Orientation::Vertical)
+            .spacing(4)
+            .halign(gtk::Align::Center)
+            .valign(gtk::Align::Center)
+            .build();
+        card.add_css_class("card");
+        card.set_size_request(140, 80);
+
+        let inner = gtk::Box::builder()
+            .orientation(gtk::Orientation::Vertical)
+            .spacing(4)
+            .margin_top(12)
+            .margin_bottom(12)
+            .margin_start(8)
+            .margin_end(8)
+            .halign(gtk::Align::Center)
+            .valign(gtk::Align::Center)
+            .vexpand(true)
+            .build();
+
+        let name_label = gtk::Label::builder()
+            .label(*name)
+            .css_classes(["heading"])
+            .build();
+
+        let desc_label = gtk::Label::builder()
+            .label(*desc)
+            .css_classes(["caption", "dim-label"])
+            .wrap(true)
+            .justify(gtk::Justification::Center)
+            .max_width_chars(18)
+            .build();
+
+        inner.append(&name_label);
+        inner.append(&desc_label);
+        card.append(&inner);
+        format_flow.append(&card);
+    }
+
+    format_group.add(&format_flow);
+    content.append(&format_group);
+
+    scrolled.set_child(Some(&content));
+
+    let clamp = adw::Clamp::builder()
+        .maximum_size(600)
+        .child(&scrolled)
+        .build();
+
+    adw::NavigationPage::builder()
+        .title("Convert")
+        .tag("step-convert")
+        .child(&clamp)
+        .build()
+}
diff --git a/pixstrip-gtk/src/steps/step_images.rs b/pixstrip-gtk/src/steps/step_images.rs
new file mode 100644
index 0000000..043f0a8
--- /dev/null
+++ b/pixstrip-gtk/src/steps/step_images.rs
@@ -0,0 +1,142 @@
+use adw::prelude::*;
+
+pub fn build_images_page() -> adw::NavigationPage {
+    let stack = gtk::Stack::builder()
+        .transition_type(gtk::StackTransitionType::Crossfade)
+        .build();
+
+    // Empty state - drop zone
+    let empty_state = build_empty_state();
+    stack.add_named(&empty_state, Some("empty"));
+
+    // Loaded state - thumbnail grid (placeholder for now)
+    let loaded_state = build_loaded_state();
+    stack.add_named(&loaded_state, Some("loaded"));
+
+    stack.set_visible_child_name("empty");
+
+    adw::NavigationPage::builder()
+        .title("Add Images")
+        .tag("step-images")
+        .child(&stack)
+        .build()
+}
+
+fn build_empty_state() -> gtk::Box {
+    let container = gtk::Box::builder()
+        .orientation(gtk::Orientation::Vertical)
+        .vexpand(true)
+        .hexpand(true)
+        .build();
+
+    let drop_zone = gtk::Box::builder()
+        .orientation(gtk::Orientation::Vertical)
+        .spacing(12)
+        .halign(gtk::Align::Center)
+        .valign(gtk::Align::Center)
+        .vexpand(true)
+        .margin_top(48)
+        .margin_bottom(48)
+        .margin_start(48)
+        .margin_end(48)
+        .build();
+    drop_zone.add_css_class("card");
+
+    let inner = gtk::Box::builder()
+        .orientation(gtk::Orientation::Vertical)
+        .spacing(12)
+        .margin_top(48)
+        .margin_bottom(48)
+        .margin_start(64)
+        .margin_end(64)
+        .halign(gtk::Align::Center)
+        .build();
+
+    let icon = gtk::Image::builder()
+        .icon_name("folder-pictures-symbolic")
+        .pixel_size(64)
+        .css_classes(["dim-label"])
+        .build();
+
+    let title = gtk::Label::builder()
+        .label("Drop images here")
+        .css_classes(["title-2"])
+        .build();
+
+    let subtitle = gtk::Label::builder()
+        .label("or click Browse to select files")
+        .css_classes(["dim-label"])
+        .build();
+
+    let browse_button = gtk::Button::builder()
+        .label("Browse Files")
+        .tooltip_text("Add image files (Ctrl+O)")
+        .halign(gtk::Align::Center)
+        .build();
+    browse_button.add_css_class("suggested-action");
+    browse_button.add_css_class("pill");
+
+    inner.append(&icon);
+    inner.append(&title);
+    inner.append(&subtitle);
+    inner.append(&browse_button);
+    drop_zone.append(&inner);
+
+    container.append(&drop_zone);
+    container
+}
+
+fn build_loaded_state() -> gtk::Box {
+    let container = gtk::Box::builder()
+        .orientation(gtk::Orientation::Vertical)
+        .spacing(0)
+        .build();
+
+    // Toolbar
+    let toolbar = gtk::Box::builder()
+        .orientation(gtk::Orientation::Horizontal)
+        .spacing(8)
+        .margin_start(12)
+        .margin_end(12)
+        .margin_top(8)
+        .margin_bottom(8)
+        .build();
+
+    let count_label = gtk::Label::builder()
+        .label("0 images (0 B)")
+        .hexpand(true)
+        .halign(gtk::Align::Start)
+        .css_classes(["heading"])
+        .build();
+
+    let add_button = gtk::Button::builder()
+        .icon_name("list-add-symbolic")
+        .tooltip_text("Add more images")
+        .build();
+    add_button.add_css_class("flat");
+
+    let select_all_button = gtk::Button::builder()
+        .label("Select All")
+        .tooltip_text("Select all images (Ctrl+A)")
+        .build();
+    select_all_button.add_css_class("flat");
+
+    toolbar.append(&count_label);
+    toolbar.append(&add_button);
+    toolbar.append(&select_all_button);
+
+    let separator = gtk::Separator::new(gtk::Orientation::Horizontal);
+
+    // Thumbnail grid placeholder
+    let grid_placeholder = adw::StatusPage::builder()
+        .title("Images will appear here")
+        .icon_name("image-x-generic-symbolic")
+        .vexpand(true)
+        .build();
+
+    container.append(&toolbar);
+    container.append(&separator);
+    container.append(&grid_placeholder);
+
+    container
+}
diff --git a/pixstrip-gtk/src/steps/step_metadata.rs b/pixstrip-gtk/src/steps/step_metadata.rs
new file mode 100644
index 0000000..d5ed641
--- /dev/null
+++ b/pixstrip-gtk/src/steps/step_metadata.rs
@@ -0,0 +1,109 @@
+use adw::prelude::*;
+
+pub fn build_metadata_page() -> adw::NavigationPage {
+    let scrolled = gtk::ScrolledWindow::builder()
+        .hscrollbar_policy(gtk::PolicyType::Never)
+        .vexpand(true)
+        .build();
+
+    let content = gtk::Box::builder()
+        .orientation(gtk::Orientation::Vertical)
+        .spacing(12)
+        .margin_top(12)
+        .margin_bottom(12)
+        .margin_start(24)
+        .margin_end(24)
+        .build();
+
+    // Enable toggle
+    let enable_row = adw::SwitchRow::builder()
+        .title("Enable Metadata Handling")
+        .subtitle("Control what image metadata to keep or remove")
+        .active(true)
+        .build();
+
+    let enable_group = adw::PreferencesGroup::new();
+    enable_group.add(&enable_row);
+    content.append(&enable_group);
+
+    // Quick presets
+    let presets_group = adw::PreferencesGroup::builder()
+        .title("Metadata Mode")
+        .build();
+
+    let strip_all_row = adw::ActionRow::builder()
+        .title("Strip All")
+        .subtitle("Remove all metadata - smallest files, maximum privacy")
+        .activatable(true)
+        .build();
+    strip_all_row.add_prefix(&gtk::Image::from_icon_name("user-trash-symbolic"));
+    let strip_all_check = gtk::CheckButton::new();
+    strip_all_check.set_active(true);
+    strip_all_row.add_suffix(&strip_all_check);
+    strip_all_row.set_activatable_widget(Some(&strip_all_check));
+
+    let privacy_row = adw::ActionRow::builder()
+        .title("Privacy Mode")
+        .subtitle("Strip GPS and camera serial, keep copyright")
+        .activatable(true)
+        .build();
+    privacy_row.add_prefix(&gtk::Image::from_icon_name("security-medium-symbolic"));
+    let privacy_check = gtk::CheckButton::new();
+    privacy_check.set_group(Some(&strip_all_check));
+    privacy_row.add_suffix(&privacy_check);
+    privacy_row.set_activatable_widget(Some(&privacy_check));
+
+    let keep_all_row = adw::ActionRow::builder()
+        .title("Keep All")
+        .subtitle("Preserve all original metadata")
+        .activatable(true)
+        .build();
+    keep_all_row.add_prefix(&gtk::Image::from_icon_name("emblem-ok-symbolic"));
+    let keep_all_check = gtk::CheckButton::new();
+    keep_all_check.set_group(Some(&strip_all_check));
+    keep_all_row.add_suffix(&keep_all_check);
+    keep_all_row.set_activatable_widget(Some(&keep_all_check));
+
+    presets_group.add(&strip_all_row);
+    presets_group.add(&privacy_row);
+    presets_group.add(&keep_all_row);
+    content.append(&presets_group);
+
+    // Advanced - per-category controls
+    let advanced_group = adw::PreferencesGroup::builder()
+        .title("Fine-Grained Control")
+        .description("Choose exactly which metadata categories to strip")
+        .build();
+
+    let categories = [
+        ("GPS / Location Data", "Coordinates, altitude, location name", true),
+        ("Camera Info", "Camera model, serial number, lens info", true),
+        ("Software / Editing", "Software used, editing history", true),
+        ("Timestamps", "Date taken, date modified", false),
+        ("Copyright / Author", "Copyright notice, creator name", false),
+    ];
+
+    for (title, subtitle, default_strip) in &categories {
+        let row = adw::SwitchRow::builder()
+            .title(format!("Strip {}", title))
+            .subtitle(*subtitle)
+            .active(*default_strip)
+            .build();
+        advanced_group.add(&row);
+    }
+
+    content.append(&advanced_group);
+
+    scrolled.set_child(Some(&content));
+
+    let clamp = adw::Clamp::builder()
+        .maximum_size(600)
+        .child(&scrolled)
+        .build();
+
+    adw::NavigationPage::builder()
+        .title("Metadata")
+        .tag("step-metadata")
+        .child(&clamp)
+        .build()
+}
diff --git a/pixstrip-gtk/src/steps/step_output.rs b/pixstrip-gtk/src/steps/step_output.rs
new file mode 100644
index 0000000..5191750
--- /dev/null
+++ b/pixstrip-gtk/src/steps/step_output.rs
@@ -0,0 +1,110 @@
+use adw::prelude::*;
+
+pub fn build_output_page() -> adw::NavigationPage {
+    let scrolled = gtk::ScrolledWindow::builder()
+        .hscrollbar_policy(gtk::PolicyType::Never)
+        .vexpand(true)
+        .build();
+
+    let content = gtk::Box::builder()
+        .orientation(gtk::Orientation::Vertical)
+        .spacing(12)
+        .margin_top(12)
+        .margin_bottom(12)
+        .margin_start(24)
+        .margin_end(24)
+        .build();
+
+    // Operation summary
+    let summary_group = adw::PreferencesGroup::builder()
+        .title("Operation Summary")
+        .description("Review your processing settings before starting")
+        .build();
+
+    let summary_placeholder = adw::ActionRow::builder()
+        .title("No operations configured")
+        .subtitle("Go back and configure your workflow settings")
+        .build();
+    summary_placeholder.add_prefix(&gtk::Image::from_icon_name("dialog-information-symbolic"));
+
+    summary_group.add(&summary_placeholder);
+    content.append(&summary_group);
+
+    // Output directory
+    let output_group = adw::PreferencesGroup::builder()
+        .title("Output Directory")
+        .build();
+
+    let output_row = adw::ActionRow::builder()
+        .title("Output Location")
+        .subtitle("processed/ (subfolder next to originals)")
+        .activatable(true)
+        .build();
+    output_row.add_prefix(&gtk::Image::from_icon_name("folder-symbolic"));
+
+    let choose_button = gtk::Button::builder()
+        .icon_name("folder-open-symbolic")
+        .tooltip_text("Choose output folder")
+        .valign(gtk::Align::Center)
+        .build();
+    choose_button.add_css_class("flat");
+    output_row.add_suffix(&choose_button);
+    output_row.add_suffix(&gtk::Image::from_icon_name("go-next-symbolic"));
+
+    let structure_row = adw::SwitchRow::builder()
+        .title("Preserve Directory Structure")
+        .subtitle("Keep subfolder hierarchy in output")
+        .active(false)
+        .build();
+
+    output_group.add(&output_row);
+    output_group.add(&structure_row);
+    content.append(&output_group);
+
+    // Overwrite behavior
+    let overwrite_group = adw::PreferencesGroup::builder()
+        .title("If Files Already Exist")
+        .build();
+
+    let overwrite_row = adw::ComboRow::builder()
+        .title("Overwrite Behavior")
+        .subtitle("What to do when output file already exists")
+        .build();
+    let overwrite_model = gtk::StringList::new(&[
+        "Ask before overwriting",
+        "Auto-rename with suffix",
+        "Always overwrite",
+        "Skip existing files",
+    ]);
+    overwrite_row.set_model(Some(&overwrite_model));
+
+    overwrite_group.add(&overwrite_row);
+    content.append(&overwrite_group);
+
+    // Image count
+    let stats_group = adw::PreferencesGroup::builder()
+        .title("Batch Info")
+        .build();
+
+    let count_row = adw::ActionRow::builder()
+        .title("Images to process")
+        .subtitle("0 images")
+        .build();
+    count_row.add_prefix(&gtk::Image::from_icon_name("image-x-generic-symbolic"));
+
+    stats_group.add(&count_row);
+    content.append(&stats_group);
+
+    scrolled.set_child(Some(&content));
+
+    let clamp = adw::Clamp::builder()
+        .maximum_size(600)
+        .child(&scrolled)
+        .build();
+
+    adw::NavigationPage::builder()
+        .title("Output & Process")
+        .tag("step-output")
+        .child(&clamp)
+        .build()
+}
diff --git a/pixstrip-gtk/src/steps/step_resize.rs b/pixstrip-gtk/src/steps/step_resize.rs
new file mode 100644
index 0000000..d2afece
--- /dev/null
+++ b/pixstrip-gtk/src/steps/step_resize.rs
@@ -0,0 +1,189 @@
+use adw::prelude::*;
+
+pub fn build_resize_page() -> adw::NavigationPage {
+    let scrolled = gtk::ScrolledWindow::builder()
+        .hscrollbar_policy(gtk::PolicyType::Never)
+        .vexpand(true)
+        .build();
+
+    let content = gtk::Box::builder()
+        .orientation(gtk::Orientation::Vertical)
+        .spacing(12)
+        .margin_top(12)
+        .margin_bottom(12)
+        .margin_start(24)
+        .margin_end(24)
+        .build();
+
+    // Enable toggle
+    let enable_row = adw::SwitchRow::builder()
+        .title("Enable Resize")
+        .subtitle("Resize images to new dimensions")
+        .active(true)
+        .build();
+
+    let enable_group = adw::PreferencesGroup::new();
+    enable_group.add(&enable_row);
+    content.append(&enable_group);
+
+    // Resize mode selector
+    let mode_group = adw::PreferencesGroup::builder()
+        .title("Resize Mode")
+        .build();
+
+    // Width/Height mode
+    let width_row = adw::SpinRow::builder()
+        .title("Width")
+        .subtitle("Target width in pixels")
+        .adjustment(&gtk::Adjustment::new(1200.0, 1.0, 10000.0, 1.0, 100.0, 0.0))
+        .build();
+
+    let height_row = adw::SpinRow::builder()
+        .title("Height")
+        .subtitle("Target height in pixels (0 = auto from aspect ratio)")
+        .adjustment(&gtk::Adjustment::new(0.0, 0.0, 10000.0, 1.0, 100.0, 0.0))
+        .build();
+
+    mode_group.add(&width_row);
+    mode_group.add(&height_row);
+    content.append(&mode_group);
+
+    // Social media presets
+    let presets_group = adw::PreferencesGroup::builder()
+        .title("Quick Dimension Presets")
+        .build();
+
+    let fedi_expander = adw::ExpanderRow::builder()
+        .title("Fediverse / Open Platforms")
+        .subtitle("Mastodon, Pixelfed, Bluesky, Lemmy")
+        .build();
+
+    let fedi_presets = [
+        ("Mastodon Post", "1920 x 1080"),
+        ("Mastodon Profile", "400 x 400"),
+        ("Mastodon Header", "1500 x 500"),
+        ("Pixelfed Post", "1080 x 1080"),
+        ("Pixelfed Story", "1080 x 1920"),
+        ("Bluesky Post", "1200 x 630"),
+        ("Bluesky Profile", "400 x 400"),
+        ("Lemmy Post", "1200 x 630"),
+    ];
+
+    for (name, dims) in &fedi_presets {
+        let row = adw::ActionRow::builder()
+            .title(*name)
+            .subtitle(*dims)
+            .activatable(true)
+            .build();
+        row.add_suffix(&gtk::Image::from_icon_name("go-next-symbolic"));
+        fedi_expander.add_row(&row);
+    }
+
+    let mainstream_expander = adw::ExpanderRow::builder()
+        .title("Mainstream Platforms")
+        .subtitle("Instagram, YouTube, LinkedIn, Pinterest")
+        .build();
+
+    let mainstream_presets = [
+        ("Instagram Post", "1080 x 1080"),
+        ("Instagram Story/Reel", "1080 x 1920"),
+        ("Facebook Post", "1200 x 630"),
+        ("YouTube Thumbnail", "1280 x 720"),
+        ("LinkedIn Post", "1200 x 627"),
+        ("Pinterest Pin", "1000 x 1500"),
+    ];
+
+    for (name, dims) in &mainstream_presets {
+        let row = adw::ActionRow::builder()
+            .title(*name)
+            .subtitle(*dims)
+            .activatable(true)
+            .build();
+        row.add_suffix(&gtk::Image::from_icon_name("go-next-symbolic"));
+        mainstream_expander.add_row(&row);
+    }
+
+    let other_expander = adw::ExpanderRow::builder()
+        .title("Common Sizes")
+        .subtitle("HD, Blog, Thumbnail")
+        .build();
+
+    let other_presets = [
+        ("Full HD", "1920 x 1080"),
+        ("Blog Image", "800 wide"),
+        ("Thumbnail", "150 x 150"),
+    ];
+
+    for (name, dims) in &other_presets {
+        let row = adw::ActionRow::builder()
+            .title(*name)
+            .subtitle(*dims)
+            .activatable(true)
+            .build();
+        row.add_suffix(&gtk::Image::from_icon_name("go-next-symbolic"));
+        other_expander.add_row(&row);
+    }
+
+    presets_group.add(&fedi_expander);
+    presets_group.add(&mainstream_expander);
+    presets_group.add(&other_expander);
+    content.append(&presets_group);
+
+    // Basic adjustments (rotation/flip)
+    let adjust_group = adw::PreferencesGroup::builder()
+        .title("Basic Adjustments")
+        .build();
+
+    let rotate_row = adw::ComboRow::builder()
+        .title("Rotate")
+        .subtitle("Rotation applied after resize")
+        .build();
+    let rotate_model = gtk::StringList::new(&["None", "90 clockwise", "180", "270 clockwise", "Auto-orient (EXIF)"]);
+    rotate_row.set_model(Some(&rotate_model));
+
+    let flip_row = adw::ComboRow::builder()
+        .title("Flip")
+        .subtitle("Mirror the image")
+        .build();
+    let flip_model = gtk::StringList::new(&["None", "Horizontal", "Vertical"]);
+    flip_row.set_model(Some(&flip_model));
+
+    adjust_group.add(&rotate_row);
+    adjust_group.add(&flip_row);
+    content.append(&adjust_group);
+
+    // Advanced options
+    let advanced_group = adw::PreferencesGroup::builder()
+        .title("Advanced Options")
+        .build();
+
+    let algo_row = adw::ComboRow::builder()
+        .title("Resize Algorithm")
+        .subtitle("Higher quality is slower")
+        .build();
+    let algo_model = gtk::StringList::new(&["Lanczos3 (Best)", "CatmullRom", "Bilinear", "Nearest"]);
+    algo_row.set_model(Some(&algo_model));
+
+    let upscale_row = adw::SwitchRow::builder()
+        .title("Allow Upscaling")
+        .subtitle("Enlarge images smaller than target size")
+        .active(false)
+        .build();
+
+    advanced_group.add(&algo_row);
+    advanced_group.add(&upscale_row);
+    content.append(&advanced_group);
+
+    scrolled.set_child(Some(&content));
+
+    let clamp = adw::Clamp::builder()
+        .maximum_size(600)
+        .child(&scrolled)
+        .build();
+
+    adw::NavigationPage::builder()
+        .title("Resize")
+        .tag("step-resize")
+        .child(&clamp)
+        .build()
+}
diff --git a/pixstrip-gtk/src/steps/step_workflow.rs b/pixstrip-gtk/src/steps/step_workflow.rs
new file mode 100644
index 0000000..a598f53
--- /dev/null
+++ b/pixstrip-gtk/src/steps/step_workflow.rs
@@ -0,0 +1,179 @@
+use adw::prelude::*;
+use pixstrip_core::preset::Preset;
+
+pub fn build_workflow_page() -> adw::NavigationPage {
+    let scrolled = gtk::ScrolledWindow::builder()
+        .hscrollbar_policy(gtk::PolicyType::Never)
+        .vexpand(true)
+        .build();
+
+    let content = gtk::Box::builder()
+        .orientation(gtk::Orientation::Vertical)
+        .spacing(12)
+        .margin_top(12)
+        .margin_bottom(12)
+        .margin_start(24)
+        .margin_end(24)
+        .build();
+
+    // Built-in presets section
+    let builtin_group = adw::PreferencesGroup::builder()
+        .title("Built-in Workflows")
+        .description("Select a preset to get started quickly")
+        .build();
+
+    let builtin_flow = gtk::FlowBox::builder()
+        .selection_mode(gtk::SelectionMode::Single)
+        .max_children_per_line(4)
+        .min_children_per_line(2)
+        .row_spacing(8)
+        .column_spacing(8)
+        .homogeneous(true)
+        .build();
+
+    for preset in Preset::all_builtins() {
+        let card = build_preset_card(&preset);
+        builtin_flow.append(&card);
+    }
+
+    builtin_group.add(&builtin_flow);
+    content.append(&builtin_group);
+
+    // Custom workflow section
+    let custom_group = adw::PreferencesGroup::builder()
+        .title("Custom Workflow")
+        .description("Choose which operations to include")
+        .build();
+
+    let custom_card = build_custom_card();
+    let custom_flow = gtk::FlowBox::builder()
+        .selection_mode(gtk::SelectionMode::None)
+        .max_children_per_line(4)
+        .min_children_per_line(2)
+        .build();
+    custom_flow.append(&custom_card);
+    custom_group.add(&custom_flow);
+    content.append(&custom_group);
+
+    // User presets section (initially empty)
+    let user_group = adw::PreferencesGroup::builder()
+        .title("Your Presets")
+        .description("Import or save your own workflows")
+        .build();
+
+    let import_button = gtk::Button::builder()
+        .label("Import Preset")
+        .icon_name("document-open-symbolic")
+        .build();
+    import_button.add_css_class("flat");
+    user_group.add(&import_button);
+    content.append(&user_group);
+
+    scrolled.set_child(Some(&content));
+
+    let clamp = adw::Clamp::builder()
+        .maximum_size(800)
+        .child(&scrolled)
+        .build();
+
+    adw::NavigationPage::builder()
+        .title("Choose a Workflow")
+        .tag("step-workflow")
+        .child(&clamp)
+        .build()
+}
+
+fn build_preset_card(preset: &Preset) -> gtk::Box {
+    let card = gtk::Box::builder()
+        .orientation(gtk::Orientation::Vertical)
+        .spacing(8)
+        .halign(gtk::Align::Center)
+        .valign(gtk::Align::Start)
+        .build();
+    card.add_css_class("card");
+    card.set_size_request(180, 120);
+
+    let inner = gtk::Box::builder()
+        .orientation(gtk::Orientation::Vertical)
+        .spacing(4)
+        .margin_top(16)
+        .margin_bottom(16)
+        .margin_start(12)
+        .margin_end(12)
+        .halign(gtk::Align::Center)
+        .valign(gtk::Align::Center)
+        .vexpand(true)
+        .build();
+
+    let icon = gtk::Image::builder()
+        .icon_name(&preset.icon)
+        .pixel_size(32)
+        .build();
+
+    let name_label = gtk::Label::builder()
+        .label(&preset.name)
+        .css_classes(["heading"])
+        .build();
+
+    let desc_label = gtk::Label::builder()
+        .label(&preset.description)
+        .css_classes(["caption", "dim-label"])
+        .wrap(true)
+        .justify(gtk::Justification::Center)
+        .max_width_chars(20)
+        .build();
+
+    inner.append(&icon);
+    inner.append(&name_label);
+    inner.append(&desc_label);
+    card.append(&inner);
+
+    card
+}
+
+fn build_custom_card() -> gtk::Box {
+    let card = gtk::Box::builder()
+        .orientation(gtk::Orientation::Vertical)
+        .spacing(8)
+        .halign(gtk::Align::Center)
+        .valign(gtk::Align::Start)
+        .build();
+    card.add_css_class("card");
+    card.set_size_request(180, 120);
+
+    let inner = gtk::Box::builder()
+        .orientation(gtk::Orientation::Vertical)
+        .spacing(4)
+        .margin_top(16)
+        .margin_bottom(16)
+        .margin_start(12)
+        .margin_end(12)
+        .halign(gtk::Align::Center)
+        .valign(gtk::Align::Center)
+        .vexpand(true)
+        .build();
+
+    let icon = gtk::Image::builder()
+        .icon_name("applications-system-symbolic")
+        .pixel_size(32)
+        .build();
+
+    let name_label = gtk::Label::builder()
+        .label("Custom...")
+        .css_classes(["heading"])
+        .build();
+
+    let desc_label = gtk::Label::builder()
+        .label("Pick your own operations")
+        .css_classes(["caption", "dim-label"])
+        .wrap(true)
+        .justify(gtk::Justification::Center)
+        .build();
+
+    inner.append(&icon);
+    inner.append(&name_label);
+    inner.append(&desc_label);
+    card.append(&inner);
+
+    card
+}
diff --git a/pixstrip-gtk/src/wizard.rs b/pixstrip-gtk/src/wizard.rs
index d94553a..e9c20b3 100644
--- a/pixstrip-gtk/src/wizard.rs
+++ b/pixstrip-gtk/src/wizard.rs
@@ -1,3 +1,5 @@
+use crate::steps;
+
 pub struct WizardState {
     pub current_step: usize,
     pub total_steps: usize,
@@ -59,30 +61,13 @@ impl WizardState {
 }
 
 pub fn build_wizard_pages() -> Vec<adw::NavigationPage> {
-    let steps = [
-        ("step-workflow", "Choose a Workflow", "image-x-generic-symbolic", "Select a preset or build a custom workflow"),
-        ("step-images", "Add Images", "folder-pictures-symbolic", "Drop images here or click Browse"),
-        ("step-resize", "Resize", "view-fullscreen-symbolic", "Set output dimensions"),
-        ("step-convert", "Convert", "document-save-symbolic", "Choose output format"),
-        ("step-compress", "Compress", "system-file-manager-symbolic", "Set compression quality"),
-        ("step-metadata", "Metadata", "security-high-symbolic", "Control metadata privacy"),
-        ("step-output", "Output & Process", "emblem-ok-symbolic", "Review and process"),
-    ];
-
-    steps
-        .iter()
-        .map(|(tag, title, icon, description)| {
-            let status_page = adw::StatusPage::builder()
-                .title(*title)
-                .description(*description)
-                .icon_name(*icon)
-                .build();
-
-            adw::NavigationPage::builder()
-                .title(*title)
-                .tag(*tag)
-                .child(&status_page)
-                .build()
-        })
-        .collect()
+    vec![
+        steps::step_workflow::build_workflow_page(),
+        steps::step_images::build_images_page(),
+        steps::step_resize::build_resize_page(),
+        steps::step_convert::build_convert_page(),
+        steps::step_compress::build_compress_page(),
+        steps::step_metadata::build_metadata_page(),
+        steps::step_output::build_output_page(),
+    ]
 }