diff --git a/apps/api/src/lib/format-decoders.ts b/apps/api/src/lib/format-decoders.ts
index dbd48b8b..da0d5230 100644
--- a/apps/api/src/lib/format-decoders.ts
+++ b/apps/api/src/lib/format-decoders.ts
@@ -70,11 +70,9 @@ async function decodeIco(buffer: Buffer): Promise<Buffer> {
   try {
     await writeFile(inputPath, buffer);
     // ICO contains multiple sizes; extract the largest by sorting
-    await execFileAsync(
-      cmd,
-      magickArgs(cmd, [`${inputPath}[-1]`, `png:${outputPath}`]),
-      { timeout: 120_000 },
-    );
+    await execFileAsync(cmd, magickArgs(cmd, [`${inputPath}[-1]`, `png:${outputPath}`]), {
+      timeout: 120_000,
+    });
     return await readFile(outputPath);
   } finally {
     await rm(inputPath, { force: true }).catch(() => {});
diff --git a/apps/web/src/lib/image-preview.ts b/apps/web/src/lib/image-preview.ts
index 3e9474db..d6d29275 100644
--- a/apps/web/src/lib/image-preview.ts
+++ b/apps/web/src/lib/image-preview.ts
@@ -1,14 +1,21 @@
 import { formatHeaders } from "@/lib/api";
 
 const SERVER_PREVIEW_EXTENSIONS = new Set([
-  "heic", "heif", "hif",                       // HEIF
-  "jxl",                                         // JPEG XL (Chrome dropped support)
-  "ico",                                         // ICO (Sharp can't decode)
-  "dng", "cr2", "nef", "arw", "orf", "rw2",     // Camera RAW
-  "tga",                                         // Targa
-  "psd",                                         // Photoshop
-  "exr",                                         // OpenEXR
-  "hdr",                                         // Radiance HDR
+  "heic",
+  "heif",
+  "hif", // HEIF
+  "jxl", // JPEG XL (Chrome dropped support)
+  "ico", // ICO (Sharp can't decode)
+  "dng",
+  "cr2",
+  "nef",
+  "arw",
+  "orf",
+  "rw2", // Camera RAW
+  "tga", // Targa
+  "psd", // Photoshop
+  "exr", // OpenEXR
+  "hdr", // Radiance HDR
 ]);
 
 export function needsServerPreview(file: File): boolean {
diff --git a/apps/web/src/pages/tool-page.tsx b/apps/web/src/pages/tool-page.tsx
index d02aae7a..37b011ae 100644
--- a/apps/web/src/pages/tool-page.tsx
+++ b/apps/web/src/pages/tool-page.tsx
@@ -250,7 +250,8 @@ export function ToolPage() {
     const input = document.createElement("input");
     input.type = "file";
     input.multiple = true;
-    input.accept = "image/*,.heic,.heif,.hif,.jxl,.dng,.cr2,.nef,.arw,.orf,.rw2,.tga,.psd,.exr,.hdr";
+    input.accept =
+      "image/*,.heic,.heif,.hif,.jxl,.dng,.cr2,.nef,.arw,.orf,.rw2,.tga,.psd,.exr,.hdr";
     input.onchange = (e) => {
       const newFiles = Array.from((e.target as HTMLInputElement).files || []);
       if (newFiles.length > 0) addFiles(newFiles);
diff --git a/packages/image-engine/src/operations/compress.ts b/packages/image-engine/src/operations/compress.ts
index a24fdcef..970c35ec 100644
--- a/packages/image-engine/src/operations/compress.ts
+++ b/packages/image-engine/src/operations/compress.ts
@@ -22,9 +22,9 @@ export async function compress(image: Sharp, options: CompressOptions): Promise<
 
   const metadata = await image.metadata();
   const detected = metadata.format ?? "jpeg";
-  const outputFormat = (
-    FORMAT_MAP[format ?? ""] ?? FORMAT_MAP[detected] ?? detected
-  ) as keyof import("sharp").FormatEnum;
+  const outputFormat = (FORMAT_MAP[format ?? ""] ??
+    FORMAT_MAP[detected] ??
+    detected) as keyof import("sharp").FormatEnum;
 
   if (targetSizeBytes !== undefined) {
     if (targetSizeBytes <= 0) {
diff --git a/packages/image-engine/src/types.ts b/packages/image-engine/src/types.ts
index c5543c7f..0515e359 100644
--- a/packages/image-engine/src/types.ts
+++ b/packages/image-engine/src/types.ts
@@ -17,7 +17,16 @@ export interface OperationResult {
   info: ImageInfo;
 }
 
-export type OutputFormat = "jpg" | "png" | "webp" | "avif" | "tiff" | "gif" | "heic" | "heif" | "jxl";
+export type OutputFormat =
+  | "jpg"
+  | "png"
+  | "webp"
+  | "avif"
+  | "tiff"
+  | "gif"
+  | "heic"
+  | "heif"
+  | "jxl";
 
 export interface ResizeOptions {
   width?: number;