DominikMoreira · Oct 4, 2026 · Oct 4, 2026 · Oct 4, 2026 · Oct 4, 2026
diff --git a/Docs/index.html b/Docs/index.html
@@ -0,0 +1,179 @@
+<!doctype html>
+<html lang="de">
+<head>
+  <meta charset="utf-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1">
+  <meta name="description" content="Support und Datenschutzerklärung für LoopLine.">
+  <title>LoopLine – Support</title>
+  <style>
+    :root {
+      color-scheme: light dark;
+      --accent: #8f5b7a;
+      --background: #fffafb;
+      --surface: #ffffff;
+      --text: #252124;
+      --muted: #655f63;
+      --border: #e8dfe4;
+    }
+
+    @media (prefers-color-scheme: dark) {
+      :root {
+        --background: #1d191c;
+        --surface: #282328;
+        --text: #f5eef2;
+        --muted: #cfc3ca;
+        --border: #4a4047;
+      }
+    }
+
+    * {
+      box-sizing: border-box;
+    }
+
+    body {
+      margin: 0;
+      background: var(--background);
+      color: var(--text);
+      font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text",
+        "Helvetica Neue", Arial, sans-serif;
+      line-height: 1.6;
+    }
+
+    main {
+      width: min(720px, calc(100% - 40px));
+      margin: 0 auto;
+      padding: 56px 0 72px;
+    }
+
+    header {
+      margin-bottom: 42px;
+    }
+
+    .eyebrow {
+      color: var(--accent);
+      font-size: 0.9rem;
+      font-weight: 700;
+      letter-spacing: 0.08em;
+      text-transform: uppercase;
+    }
+
+    h1, h2 {
+      line-height: 1.2;
+    }
+
+    h1 {
+      font-size: clamp(2.25rem, 8vw, 3.5rem);
+      letter-spacing: -0.04em;
+      margin: 10px 0 14px;
+    }
+
+    h2 {
+      font-size: 1.45rem;
+      margin: 0 0 14px;
+    }
+
+    p {
+      margin: 0 0 16px;
+    }
+
+    section {
+      background: var(--surface);
+      border: 1px solid var(--border);
+      border-radius: 18px;
+      margin: 20px 0;
+      padding: 26px;
+    }
+
+    a {
+      color: var(--accent);
+      font-weight: 650;
+    }
+
+    .muted {
+      color: var(--muted);
+    }
+
+    footer {
+      color: var(--muted);
+      font-size: 0.9rem;
+      margin-top: 36px;
+    }
+  </style>
+</head>
+<body>
+  <main>
+    <header>
+      <div class="eyebrow">LoopLine</div>
+      <h1>Support</h1>
+      <p class="muted">
+        Dein Begleiter für Strickprojekte: Muster organisieren,
+        Fortschritt verfolgen und entspannt stricken.
+      </p>
+    </header>
+
+    <section>
+      <h2>Hilfe und Feedback</h2>
+      <p>
+        Du hast eine Frage, möchtest Feedback geben oder ein Problem melden?
+        Schreib uns gerne an:
+      </p>
+      <p>
+        <a href="mailto:dev@jodoko.com@example.com">
+          dev@jodoko.com
+        </a>
+      </p>
+      <p class="muted">
+        Bitte nenne nach Möglichkeit dein iPhone- oder iPad-Modell,
+        die iOS-Version und eine kurze Beschreibung des Problems.
+      </p>
+    </section>
+
+    <section id="datenschutz">
+      <h2>Datenschutzerklärung</h2>
+      <p><strong>Stand: 4. Oktober 2026</strong></p>
+
+      <p>
+        LoopLine wurde entwickelt, damit du deine Strickprojekte und deinen
+        Fortschritt organisieren kannst.
+      </p>
+
+      <h3>Verarbeitung von Daten</h3>
+      <p>
+        LoopLine speichert die von dir angelegten Projekte, Musterinhalte und
+        Fortschrittsdaten auf deinem Gerät. Die App verkauft keine persönlichen
+        Daten und verwendet sie nicht für Werbung.
+      </p>
+
+      <h3>Von dir importierte Inhalte</h3>
+      <p>
+        Wenn du PDF-Dateien, Bilder oder Text in ein Projekt importierst, werden
+        diese Inhalte zur Nutzung in der App verarbeitet und gespeichert.
+      </p>
+
+      <h3>Kontaktaufnahme</h3>
+      <p>
+        Wenn du uns per E-Mail kontaktierst, verwenden wir deine Nachricht und
+        die darin enthaltenen Angaben ausschließlich zur Bearbeitung deiner
+        Anfrage.
+      </p>
+
+      <h3>Deine Rechte</h3>
+      <p>
+        Du kannst deine in der App gespeicherten Projekte jederzeit innerhalb
+        der App löschen. Bei Fragen zum Datenschutz kontaktiere uns bitte über
+        die oben genannte E-Mail-Adresse.
+      </p>
+
+      <h3>Änderungen</h3>
+      <p>
+        Wir können diese Datenschutzerklärung aktualisieren, wenn sich die
+        Funktionen von LoopLine oder rechtliche Anforderungen ändern.
+      </p>
+    </section>
+
+    <footer>
+      © 2026 Dominik de Jesus Moreira · LoopLine
+    </footer>
+  </main>
+</body>
+</html>
diff --git a/LoopLine/Services/PDFMarkupStorage.swift b/LoopLine/Services/PDFMarkupStorage.swift
@@ -51,6 +51,101 @@ struct PDFMarkupStroke: Codable, Identifiable {
 
         return false
     }
+
+    func erasing(at point: CGPoint, withRadius radius: CGFloat) -> [PDFMarkupStroke] {
+        guard points.count > 1 else { return [self] }
+
+        let eraserRadius = max(radius, 0)
+        let cgPoints = points.map(\.cgPoint)
+        var fragments = [[PDFMarkupPoint]]()
+        var activeFragment = [PDFMarkupPoint]()
+        var removedPortion = false
+
+        for index in 1..<cgPoints.count {
+            let start = cgPoints[index - 1]
+            let end = cgPoints[index]
+            let visibleSegments = visibleSegments(from: start, to: end, outside: point, radius: eraserRadius)
+
+            if visibleSegments.count != 1 || visibleSegments.first?.lowerBound != 0 || visibleSegments.first?.upperBound != 1 {
+                removedPortion = true
+            }
+
+            for segment in visibleSegments {
+                let segmentStart = start.interpolated(toward: end, at: segment.lowerBound)
+                let segmentEnd = start.interpolated(toward: end, at: segment.upperBound)
+
+                if let lastPoint = activeFragment.last?.cgPoint, lastPoint.isApproximatelyEqual(to: segmentStart) {
+                    activeFragment.append(PDFMarkupPoint(segmentEnd))
+                } else {
+                    if activeFragment.count > 1 {
+                        fragments.append(activeFragment)
+                    }
+                    activeFragment = [PDFMarkupPoint(segmentStart), PDFMarkupPoint(segmentEnd)]
+                }
+            }
+
+            if visibleSegments.isEmpty, activeFragment.count > 1 {
+                fragments.append(activeFragment)
+                activeFragment.removeAll()
+            }
+        }
+
+        if activeFragment.count > 1 {
+            fragments.append(activeFragment)
+        }
+
+        guard removedPortion else { return [self] }
+
+        return fragments.map {
+            PDFMarkupStroke(
+                pageIndex: pageIndex,
+                points: $0,
+                color: color,
+                width: width,
+                isMarker: isMarker
+            )
+        }
+    }
+
+    private func visibleSegments(
+        from start: CGPoint,
+        to end: CGPoint,
+        outside center: CGPoint,
+        radius: CGFloat
+    ) -> [ClosedRange<CGFloat>] {
+        let deltaX = end.x - start.x
+        let deltaY = end.y - start.y
+        let lengthSquared = deltaX * deltaX + deltaY * deltaY
+        guard lengthSquared > 0 else {
+            return hypot(start.x - center.x, start.y - center.y) > radius ? [0...1] : []
+        }
+
+        let offsetX = start.x - center.x
+        let offsetY = start.y - center.y
+        let projection = offsetX * deltaX + offsetY * deltaY
+        let discriminant = projection * projection - lengthSquared * (offsetX * offsetX + offsetY * offsetY - radius * radius)
+
+        guard discriminant > 0 else {
+            return [0...1]
+        }
+
+        let root = sqrt(discriminant)
+        let entry = max(0, min(1, (-projection - root) / lengthSquared))
+        let exit = max(0, min(1, (-projection + root) / lengthSquared))
+
+        guard entry < exit else {
+            return [0...1]
+        }
+
+        var segments = [ClosedRange<CGFloat>]()
+        if entry > 0 {
+            segments.append(0...entry)
+        }
+        if exit < 1 {
+            segments.append(exit...1)
+        }
+        return segments
+    }
 }
 
 struct PDFMarkupPoint: Codable {
@@ -104,6 +199,17 @@ struct PDFMarkupColor: Codable {
 }
 
 private extension CGPoint {
+    func interpolated(toward point: CGPoint, at progress: CGFloat) -> CGPoint {
+        CGPoint(
+            x: x + (point.x - x) * progress,
+            y: y + (point.y - y) * progress
+        )
+    }
+
+    func isApproximatelyEqual(to point: CGPoint, tolerance: CGFloat = 0.001) -> Bool {
+        hypot(x - point.x, y - point.y) <= tolerance
+    }
+
     func distance(toSegmentFrom start: CGPoint, to end: CGPoint) -> CGFloat {
         let dx = end.x - start.x
         let dy = end.y - start.y

diff --git a/LoopLine/Views/PDFReadingView.swift b/LoopLine/Views/PDFReadingView.swift
@@ -268,8 +268,6 @@ private struct PDFKitView: UIViewRepresentable {
     }
 
     func updateUIView(_ pdfView: PDFView, context: Context) {
-        pdfView.autoScales = true
-
         if context.coordinator.url != url || pdfView.document == nil {
             context.coordinator.reset(for: url)
             pdfView.document = PDFDocument(url: url)
@@ -518,25 +516,45 @@ private struct PDFKitView: UIViewRepresentable {
                 return
             }
 
-            let removalDistance = max(selectedLineWidth, 18)
-            let strokeIDsToRemove = pageStrokes
-                .filter { $0.contains(point, within: removalDistance) }
-                .map(\.id)
+            var updatedStrokes = [PDFMarkupStroke]()
+            var didEraseMarkup = false
+
+            for stroke in pageStrokes {
+                let eraserRadius = max(selectedEraserWidth, 18) + CGFloat(stroke.width) / 2
+                let fragments = stroke.erasing(at: point, withRadius: eraserRadius)
 
-            guard !strokeIDsToRemove.isEmpty else { return }
+                guard fragments.count != 1 || fragments[0].id != stroke.id else {
+                    updatedStrokes.append(stroke)
+                    continue
+                }
 
-            storedStrokesByPage[pageIndex] = pageStrokes.filter { !strokeIDsToRemove.contains($0.id) }
-            strokeIDsToRemove.forEach { strokeID in
-                if let annotation = annotationsByStrokeID[strokeID] {
+                didEraseMarkup = true
+                if let annotation = annotationsByStrokeID[stroke.id] {
                     annotation.shouldDisplay = false
                     page.removeAnnotation(annotation)
-                    annotationsByStrokeID[strokeID] = nil
+                    annotationsByStrokeID[stroke.id] = nil
+                }
+
+                for fragment in fragments {
+                    let annotation = PDFMarkupAnnotation(stroke: fragment, pageBounds: page.bounds(for: .cropBox))
+                    page.addAnnotation(annotation)
+                    annotationsByStrokeID[fragment.id] = annotation
+                    updatedStrokes.append(fragment)
                 }
             }
+
+            guard didEraseMarkup else { return }
+
+            storedStrokesByPage[pageIndex] = updatedStrokes
             notifyMarkupChanged(on: page)
             scheduleMarkupSave()
         }
 
+        private var selectedEraserWidth: CGFloat {
+            guard let tool = currentTool as? PKEraserTool else { return 18 }
+            return max(tool.width, 1)
+        }
+
         private func loadStoredMarkupsIfNeeded(in pdfView: PDFView) {
             guard !hasLoadedStoredMarkups, let document = pdfView.document else { return }