backend/src/main/java/com/printcalculator/service/admin/AdminMediaControllerService.java

@@ -362,7 +362,27 @@ public class AdminMediaControllerService {
                 }
                 String extension = GENERATED_FORMAT_EXTENSIONS.get(format);
                 Path outputFile = generatedDirectory.resolve(preset.name() + "." + extension);
-                mediaFfmpegService.generateVariant(sourceFile, outputFile, dimensions.widthPx(), dimensions.heightPx(), format);
+                try {
+                    mediaFfmpegService.generateVariant(
+                            sourceFile,
+                            outputFile,
+                            dimensions.widthPx(),
+                            dimensions.heightPx(),
+                            format
+                    );
+                } catch (IOException e) {
+                    if (FORMAT_AVIF.equals(format)) {
+                        skippedFormats.add(format);
+                        logger.warn(
+                                "Skipping AVIF variant generation for asset {} preset '{}' because FFmpeg AVIF generation failed: {}",
+                                asset.getId(),
+                                preset.name(),
+                                e.getMessage()
+                        );
+                        continue;
+                    }
+                    throw e;
+                }
 
                 MediaVariant variant = new MediaVariant();
                 variant.setMediaAsset(asset);

backend/src/main/java/com/printcalculator/service/media/MediaFfmpegService.java

@@ -82,8 +82,6 @@ public class MediaFfmpegService {
             case "AVIF" -> {
                 command.add("-c:v");
                 command.add(encoder);
-                command.add("-still-picture");
-                command.add("1");
                 command.add("-crf");
                 command.add("30");
                 command.add("-b:v");

backend/src/test/java/com/printcalculator/service/admin/AdminMediaControllerServiceTest.java

@@ -51,6 +51,7 @@ import static org.mockito.ArgumentMatchers.anyInt;
 import static org.mockito.ArgumentMatchers.anyString;
 import static org.mockito.ArgumentMatchers.nullable;
 import static org.mockito.Mockito.doAnswer;
+import static org.mockito.Mockito.doThrow;
 import static org.mockito.Mockito.verifyNoInteractions;
 import static org.mockito.Mockito.when;
 
@@ -275,6 +276,31 @@ class AdminMediaControllerServiceTest {
                 .noneMatch(variant -> "WEBP".equals(variant.getFormat()) || "AVIF".equals(variant.getFormat())));
     }
 
+    @Test
+    void uploadAsset_whenAvifGenerationFails_shouldKeepAssetReadyAndStoreOtherVariants() throws Exception {
+        when(mediaImageInspector.inspect(any(Path.class))).thenReturn(
+                new MediaImageInspector.ImageMetadata("image/png", "png", 1600, 900)
+        );
+        doThrow(new java.io.IOException("FFmpeg failed to generate media variant. Unrecognized option 'still-picture'."))
+                .when(mediaFfmpegService)
+                .generateVariant(any(Path.class), any(Path.class), anyInt(), anyInt(), org.mockito.ArgumentMatchers.eq("AVIF"));
+
+        MockMultipartFile file = new MockMultipartFile(
+                "file",
+                "landing-hero.png",
+                "image/png",
+                "png-image-content".getBytes(StandardCharsets.UTF_8)
+        );
+
+        AdminMediaAssetDto dto = service.uploadAsset(file, " Landing hero ", " Main headline ", null);
+
+        assertEquals("READY", dto.getStatus());
+        assertEquals(7, dto.getVariants().size());
+        assertTrue(dto.getVariants().stream().noneMatch(variant -> "AVIF".equals(variant.getFormat())));
+        assertEquals(3, dto.getVariants().stream().filter(variant -> "JPEG".equals(variant.getFormat())).count());
+        assertEquals(3, dto.getVariants().stream().filter(variant -> "WEBP".equals(variant.getFormat())).count());
+    }
+
     @Test
     void uploadAsset_withOversizedFile_shouldFailValidationBeforePersistence() {
         service = new AdminMediaControllerService(

backend/src/test/java/com/printcalculator/service/media/MediaFfmpegServiceTest.java

@@ -6,8 +6,11 @@ import org.junit.jupiter.api.io.TempDir;
 import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
+import java.nio.file.attribute.PosixFilePermission;
+import java.util.Set;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 import static org.junit.jupiter.api.Assertions.assertThrows;
 
 class MediaFfmpegServiceTest {
@@ -61,4 +64,57 @@ class MediaFfmpegServiceTest {
 
         assertEquals("Media target file name must not start with '-'.", ex.getMessage());
     }
+
+    @Test
+    void generateVariant_avifShouldNotUseStillPictureFlag() throws Exception {
+        Path fakeFfmpeg = tempDir.resolve("fake-ffmpeg.sh");
+        Files.writeString(
+                fakeFfmpeg,
+                """
+                        #!/bin/sh
+                        if [ "$1" = "-hide_banner" ] && [ "$2" = "-encoders" ]; then
+                          cat <<'EOF'
+                         V..... mjpeg
+                         V..... libwebp
+                         V..... libaom-av1
+                        EOF
+                          exit 0
+                        fi
+
+                        for arg in "$@"; do
+                          if [ "$arg" = "-still-picture" ]; then
+                            echo "Unrecognized option 'still-picture'. Error splitting the argument list: Option not found"
+                            exit 1
+                          fi
+                        done
+
+                        last_arg=""
+                        for arg in "$@"; do
+                          last_arg="$arg"
+                        done
+
+                        mkdir -p "$(dirname "$last_arg")"
+                        printf 'ok' > "$last_arg"
+                        exit 0
+                        """
+        );
+        Files.setPosixFilePermissions(
+                fakeFfmpeg,
+                Set.of(
+                        PosixFilePermission.OWNER_READ,
+                        PosixFilePermission.OWNER_WRITE,
+                        PosixFilePermission.OWNER_EXECUTE
+                )
+        );
+
+        MediaFfmpegService service = new MediaFfmpegService(fakeFfmpeg.toString());
+        Path source = tempDir.resolve("input.png");
+        Path target = tempDir.resolve("output.avif");
+        Files.writeString(source, "image");
+
+        service.generateVariant(source, target, 120, 80, "AVIF");
+
+        assertTrue(Files.exists(target));
+        assertEquals("ok", Files.readString(target));
+    }
 }

frontend/src/app/core/services/seo.service.ts

@@ -57,7 +57,8 @@ export class SeoService {
       this.asString(mergedData['seoDescription']) ?? this.defaultDescription;
     const robots = this.asString(mergedData['seoRobots']) ?? 'index, follow';
     const ogTitle = this.asString(mergedData['ogTitle']) ?? title;
-    const ogDescription = this.asString(mergedData['ogDescription']) ?? description;
+    const ogDescription =
+      this.asString(mergedData['ogDescription']) ?? description;
 
     this.applySeoValues(title, description, robots, ogTitle, ogDescription);
   }

frontend/src/app/features/admin/pages/admin-dashboard.component.html

@@ -75,7 +75,10 @@
             [ngModel]="orderTypeFilter"
             (ngModelChange)="onOrderTypeFilterChange($event)"
           >
-            <option *ngFor="let option of orderTypeFilterOptions" [ngValue]="option">
+            <option
+              *ngFor="let option of orderTypeFilterOptions"
+              [ngValue]="option"
+            >
               {{ option }}
             </option>
           </select>
@@ -133,7 +136,9 @@
           <span
             class="order-type-badge"
             [class.order-type-badge--shop]="orderKind(selectedOrder) === 'SHOP'"
-            [class.order-type-badge--mixed]="orderKind(selectedOrder) === 'MIXED'"
+            [class.order-type-badge--mixed]="
+              orderKind(selectedOrder) === 'MIXED'
+            "
           >
             {{ orderKindLabel(selectedOrder) }}
           </span>
@@ -162,7 +167,8 @@
           <strong>Stato ordine</strong><span>{{ selectedOrder.status }}</span>
         </div>
         <div class="ui-meta-item">
-          <strong>Tipo ordine</strong><span>{{ orderKindLabel(selectedOrder) }}</span>
+          <strong>Tipo ordine</strong
+          ><span>{{ orderKindLabel(selectedOrder) }}</span>
         </div>
         <div class="ui-meta-item">
           <strong>Totale</strong
@@ -279,7 +285,9 @@
                 ></span>
                 <span>
                   {{ getItemColorLabel(item) }}
-                  <ng-container *ngIf="getItemColorCodeSuffix(item) as colorCode">
+                  <ng-container
+                    *ngIf="getItemColorCodeSuffix(item) as colorCode"
+                  >
                     ({{ colorCode }})
                   </ng-container>
                 </span>
@@ -300,7 +308,12 @@
             <button
               type="button"
               class="ui-button ui-button--ghost"
-              (click)="downloadItemFile(item.id, item.originalFilename || itemDisplayName(item))"
+              (click)="
+                downloadItemFile(
+                  item.id,
+                  item.originalFilename || itemDisplayName(item)
+                )
+              "
             >
               {{ downloadItemLabel(item) }}
             </button>
@@ -373,7 +386,10 @@
 
     <h4>Parametri per file</h4>
     <div class="file-color-list">
-      <div class="file-color-row" *ngFor="let item of printItems(selectedOrder)">
+      <div
+        class="file-color-row"
+        *ngFor="let item of printItems(selectedOrder)"
+      >
         <span class="filename">{{ item.originalFilename }}</span>
         <span class="file-color">
           {{ getItemMaterialLabel(item) }} | Colore:

frontend/src/app/features/admin/pages/admin-dashboard.component.ts

@@ -131,7 +131,8 @@ export class AdminDashboardComponent implements OnInit {
         this.selectedOrder = order;
         this.selectedStatus = order.status;
         this.selectedPaymentMethod = order.paymentMethod || 'OTHER';
-        this.showPrintDetails = this.showPrintDetails && this.hasPrintItems(order);
+        this.showPrintDetails =
+          this.showPrintDetails && this.hasPrintItems(order);
         this.detailLoading = false;
       },
       error: () => {
@@ -446,7 +447,8 @@ export class AdminDashboardComponent implements OnInit {
     this.selectedStatus = updatedOrder.status;
     this.selectedPaymentMethod =
       updatedOrder.paymentMethod || this.selectedPaymentMethod;
-    this.showPrintDetails = this.showPrintDetails && this.hasPrintItems(updatedOrder);
+    this.showPrintDetails =
+      this.showPrintDetails && this.hasPrintItems(updatedOrder);
   }
 
   private applyListFiltersAndSelection(): void {

frontend/src/app/features/checkout/checkout.component.ts

@@ -393,10 +393,7 @@ export class CheckoutComponent implements OnInit {
   }
 
   private loadStlPreviews(session: any): void {
-    if (
+    if (!this.sessionId || !Array.isArray(session?.items)) {
-      !this.sessionId ||
-      !Array.isArray(session?.items)
-    ) {
       return;
     }
 

frontend/src/app/features/order/order.component.html

@@ -161,7 +161,9 @@
             <app-button
               variant="outline"
               (click)="completeOrder()"
-              [disabled]="!selectedPaymentMethod || o.paymentStatus === 'REPORTED'"
+              [disabled]="
+                !selectedPaymentMethod || o.paymentStatus === 'REPORTED'
+              "
               [fullWidth]="true"
             >
               {{
@@ -201,10 +203,14 @@
                 </div>
 
                 <div class="order-item-meta">
-                  <span>{{ "CHECKOUT.QTY" | translate }}: {{ item.quantity }}</span>
+                  <span
+                    >{{ "CHECKOUT.QTY" | translate }}: {{ item.quantity }}</span
+                  >
                   <span *ngIf="showItemMaterial(item)">
                     {{ "CHECKOUT.MATERIAL" | translate }}:
-                    {{ item.materialCode || ("ORDER.NOT_AVAILABLE" | translate) }}
+                    {{
+                      item.materialCode || ("ORDER.NOT_AVAILABLE" | translate)
+                    }}
                   </span>
                   <span *ngIf="itemVariantLabel(item) as variantLabel">
                     {{ "SHOP.VARIANT" | translate }}: {{ variantLabel }}
@@ -252,7 +258,9 @@
               <strong>{{ orderKindLabel(o) }}</strong>
             </div>
             <div>
-              <span class="summary-label">{{ "ORDER.ITEM_COUNT" | translate }}</span>
+              <span class="summary-label">{{
+                "ORDER.ITEM_COUNT" | translate
+              }}</span>
               <strong>{{ (o.items || []).length }}</strong>
             </div>
           </div>

frontend/src/app/features/order/order.component.ts

@@ -263,7 +263,9 @@ export class OrderComponent implements OnInit {
       return shopName;
     }
 
-    return String(item?.originalFilename ?? this.translate.instant('ORDER.NOT_AVAILABLE'));
+    return String(
+      item?.originalFilename ?? this.translate.instant('ORDER.NOT_AVAILABLE'),
+    );
   }
 
   itemVariantLabel(item: PublicOrderItem): string | null {

frontend/src/app/features/shop/components/product-card/product-card.component.html

@@ -41,9 +41,7 @@
       <div class="pricing">
         <span class="price">{{ priceLabel() | currency: "CHF" }}</span>
         @if (hasPriceRange()) {
-          <small class="price-note">{{
+          <small class="price-note">{{ "SHOP.PRICE_FROM" | translate }}</small>
-            "SHOP.PRICE_FROM" | translate
-          }}</small>
         }
       </div>
 

frontend/src/app/features/shop/product-detail.component.html

@@ -44,7 +44,9 @@
                     <button
                       type="button"
                       class="thumb"
-                      [class.active]="selectedImage().mediaAssetId === image.mediaAssetId"
+                      [class.active]="
+                        selectedImage().mediaAssetId === image.mediaAssetId
+                      "
                       (click)="selectImage(image.mediaAssetId)"
                     >
                       @if (imageUrl(image); as imageUrl) {
@@ -68,13 +70,16 @@
                     </div>
                     <div class="dimensions">
                       <span>
-                        X {{ p.model3d.boundingBoxXMm || 0 | number: "1.0-1" }} mm
+                        X
+                        {{ p.model3d.boundingBoxXMm || 0 | number: "1.0-1" }} mm
                       </span>
                       <span>
-                        Y {{ p.model3d.boundingBoxYMm || 0 | number: "1.0-1" }} mm
+                        Y
+                        {{ p.model3d.boundingBoxYMm || 0 | number: "1.0-1" }} mm
                       </span>
                       <span>
-                        Z {{ p.model3d.boundingBoxZMm || 0 | number: "1.0-1" }} mm
+                        Z
+                        {{ p.model3d.boundingBoxZMm || 0 | number: "1.0-1" }} mm
                       </span>
                     </div>
                   </div>
@@ -128,7 +133,8 @@
                       <span class="cart-pill">
                         {{
                           "SHOP.IN_CART_LONG"
-                            | translate: { count: selectedVariantCartQuantity() }
+                            | translate
+                              : { count: selectedVariantCartQuantity() }
                         }}
                       </span>
                     }
@@ -152,7 +158,9 @@
                             <small>{{ variant.variantLabel }}</small>
                           }
                         </span>
-                        <strong>{{ variant.priceChf | currency: "CHF" }}</strong>
+                        <strong>{{
+                          variant.priceChf | currency: "CHF"
+                        }}</strong>
                       </button>
                     }
                   </div>
@@ -160,9 +168,13 @@
                   <div class="quantity-row">
                     <span>{{ "SHOP.QUANTITY" | translate }}</span>
                     <div class="qty-control">
-                      <button type="button" (click)="decreaseQuantity()">-</button>
+                      <button type="button" (click)="decreaseQuantity()">
+                        -
+                      </button>
                       <span>{{ quantity() }}</span>
-                      <button type="button" (click)="increaseQuantity()">+</button>
+                      <button type="button" (click)="increaseQuantity()">
+                        +
+                      </button>
                     </div>
                   </div>
 
@@ -173,9 +185,8 @@
                       (click)="addToCart()"
                     >
                       {{
-                        (isAddingToCart()
+                        (isAddingToCart() ? "SHOP.ADDING" : "SHOP.ADD_CART")
-                          ? "SHOP.ADDING"
+                          | translate
-                          : "SHOP.ADD_CART") | translate
                       }}
                     </app-button>
 

frontend/src/app/features/shop/product-detail.component.ts

@@ -121,7 +121,9 @@ export class ProductDetailComponent {
 
     combineLatest([
       toObservable(this.productSlug, { injector: this.injector }),
-      toObservable(this.languageService.currentLang, { injector: this.injector }),
+      toObservable(this.languageService.currentLang, {
+        injector: this.injector,
+      }),
     ])
       .pipe(
         tap(() => {
@@ -160,13 +162,22 @@ export class ProductDetailComponent {
         }
 
         this.product.set(product);
-        this.selectedVariantId.set(product.defaultVariant?.id ?? product.variants[0]?.id ?? null);
+        this.selectedVariantId.set(
-        this.selectedImageAssetId.set(product.primaryImage?.mediaAssetId ?? product.images[0]?.mediaAssetId ?? null);
+          product.defaultVariant?.id ?? product.variants[0]?.id ?? null,
+        );
+        this.selectedImageAssetId.set(
+          product.primaryImage?.mediaAssetId ??
+            product.images[0]?.mediaAssetId ??
+            null,
+        );
         this.quantity.set(1);
         this.applySeo(product);
 
         if (product.model3d?.url && product.model3d.originalFilename) {
-          this.loadModelPreview(product.model3d.url, product.model3d.originalFilename);
+          this.loadModelPreview(
+            product.model3d.url,
+            product.model3d.originalFilename,
+          );
         } else {
           this.modelFile.set(null);
           this.modelLoading.set(false);
@@ -239,7 +250,9 @@ export class ProductDetailComponent {
   }
 
   priceLabel(): number {
-    return this.selectedVariant()?.priceChf ?? this.product()?.priceFromChf ?? 0;
+    return (
+      this.selectedVariant()?.priceChf ?? this.product()?.priceFromChf ?? 0
+    );
   }
 
   colorLabel(variant: ShopProductVariantOption): string {
@@ -282,7 +295,8 @@ export class ProductDetailComponent {
       product.seoDescription ||
       product.excerpt ||
       this.translate.instant('SHOP.CATALOG_META_DESCRIPTION');
-    const robots = product.indexable === false ? 'noindex, nofollow' : 'index, follow';
+    const robots =
+      product.indexable === false ? 'noindex, nofollow' : 'index, follow';
 
     this.seoService.applyPageSeo({
       title,

frontend/src/app/features/shop/services/shop.service.spec.ts

@@ -129,7 +129,9 @@ describe('ShopService', () => {
   it('posts add-to-cart with credentials and replaces local cart state', () => {
     service.addToCart('variant-red', 2).subscribe();
 
-    const request = httpMock.expectOne('http://localhost:8000/api/shop/cart/items');
+    const request = httpMock.expectOne(
+      'http://localhost:8000/api/shop/cart/items',
+    );
     expect(request.request.method).toBe('POST');
     expect(request.request.withCredentials).toBeTrue();
     expect(request.request.body).toEqual({

frontend/src/app/features/shop/services/shop.service.ts

@@ -251,9 +251,12 @@ export class ShopService {
       params = params.set('featured', String(featured));
     }
 
-    return this.http.get<ShopProductCatalogResponse>(`${this.apiUrl}/products`, {
+    return this.http.get<ShopProductCatalogResponse>(
-      params,
+      `${this.apiUrl}/products`,
-    });
+      {
+        params,
+      },
+    );
   }
 
   getProduct(slug: string): Observable<ShopProductDetail> {
@@ -337,10 +340,7 @@ export class ShopService {
       .pipe(tap((cart) => this.setCart(cart)));
   }
 
-  getProductModelFile(
+  getProductModelFile(urlOrPath: string, filename: string): Observable<File> {
-    urlOrPath: string,
-    filename: string,
-  ): Observable<File> {
     return this.http
       .get(this.resolveApiUrl(urlOrPath), {
         responseType: 'blob',