diff --git a/src/converters/ffmpeg.ts b/src/converters/ffmpeg.ts
index 926b62d3..adf48b45 100644
--- a/src/converters/ffmpeg.ts
+++ b/src/converters/ffmpeg.ts
@@ -770,9 +770,15 @@ export async function convert(
   }
 
   // Parse FFMPEG_ARGS environment variable into array
-  const ffmpegArgs = process.env.FFMPEG_ARGS ? process.env.FFMPEG_ARGS.split(/\s+/).filter(Boolean) : [];
+  const ffmpegArgs = process.env.FFMPEG_ARGS
+    ? process.env.FFMPEG_ARGS.split(/\s+/)
+        .filter(Boolean)
+        .map((arg) => arg.trim())
+    : [];
   const ffmpegOutputArgs = process.env.FFMPEG_OUTPUT_ARGS
-    ? process.env.FFMPEG_OUTPUT_ARGS.split(/\s+/).filter(Boolean)
+    ? process.env.FFMPEG_OUTPUT_ARGS.split(/\s+/)
+        .filter(Boolean)
+        .map((arg) => arg.trim())
     : [];
 
   return new Promise((resolve, reject) => {
diff --git a/src/converters/main.ts b/src/converters/main.ts
index 6abedfdc..2c8e6b8c 100644
--- a/src/converters/main.ts
+++ b/src/converters/main.ts
@@ -321,7 +321,7 @@ export const getPossibleTargets = (from: string): Record<string, string[]> => {
   const fromClean = normalizeFiletype(from);
 
   return possibleTargets[fromClean] || {};
-}
+};
 
 const possibleInputs: string[] = [];
 for (const converterName in properties) {
@@ -348,7 +348,10 @@ for (const converterName in properties) {
 
   for (const key in converterProperties.to) {
     if (allTargets[converterName]) {
-      allTargets[converterName] = [...allTargets[converterName], ...(converterProperties.to[key] || [])];
+      allTargets[converterName] = [
+        ...allTargets[converterName],
+        ...(converterProperties.to[key] || []),
+      ];
     } else {
       allTargets[converterName] = [...(converterProperties.to[key] || [])];
     }
@@ -367,7 +370,10 @@ for (const converterName in properties) {
 
   for (const key in converterProperties.from) {
     if (allInputs[converterName]) {
-      allInputs[converterName] = [...allInputs[converterName], ...(converterProperties.from[key] || [])];
+      allInputs[converterName] = [
+        ...allInputs[converterName],
+        ...(converterProperties.from[key] || []),
+      ];
     } else {
       allInputs[converterName] = converterProperties.from[key] || [];
     }
@@ -382,4 +388,4 @@ export const getAllInputs = (converter: string) => {
  * @internal For testing only. Do not use in production.
  * Tests need direct access to cover all branches of converter discovery and chunking logic.
  */
-export { chunks, mainConverter };
\ No newline at end of file
+export { chunks, mainConverter };
diff --git a/src/pages/convert.tsx b/src/pages/convert.tsx
index c181e516..e28890cf 100644
--- a/src/pages/convert.tsx
+++ b/src/pages/convert.tsx
@@ -59,7 +59,7 @@ export const convert = new Elysia().use(userService).post(
     let fileNames: string[];
     try {
       fileNames = JSON.parse(body.file_names) as string[];
-    } catch (e) {
+    } catch {
       return redirect(`${WEBROOT}/`, 302);
     }
 
diff --git a/src/pages/deleteFile.tsx b/src/pages/deleteFile.tsx
index a43fd596..ed35550b 100644
--- a/src/pages/deleteFile.tsx
+++ b/src/pages/deleteFile.tsx
@@ -29,12 +29,11 @@ export const deleteFile = new Elysia().use(userService).post(
 
     try {
       await unlink(targetPath);
-    } catch (error) {
-      if (error.code === "ENOENT") {
+    } catch (e) {
+      if ((e as NodeJS.ErrnoException).code === "ENOENT") {
         return { message: "File not found." };
       }
-      console.error(`Failed to unlink ${targetPath}:`, error);
-      throw error;
+      throw e;
     }
 
     return {
diff --git a/src/pages/root.tsx b/src/pages/root.tsx
index 4aacd258..99b1f5ae 100644
--- a/src/pages/root.tsx
+++ b/src/pages/root.tsx
@@ -40,7 +40,7 @@ export const root = new Elysia().use(userService).get(
           if (verifiedUser && verifiedUser.id) {
             user = verifiedUser;
           }
-        } catch (e) {
+        } catch {
           // Invalid cookie, fall through to anonymous creation
         }
       }