diff --git a/apps/readest-app/src/app/api/opds/proxy/route.ts b/apps/readest-app/src/app/api/opds/proxy/route.ts
index 799b502a..06e58f8e 100644
--- a/apps/readest-app/src/app/api/opds/proxy/route.ts
+++ b/apps/readest-app/src/app/api/opds/proxy/route.ts
@@ -113,7 +113,7 @@ async function handleRequest(request: NextRequest, method: 'GET' | 'HEAD') {
       });
     }
 
-    if (stream === 'true' || (contentLength && parseInt(contentLength) > 1024 * 1024)) {
+    if (stream === 'true' && contentLength && parseInt(contentLength) > 1024 * 1024) {
       console.log(`[OPDS Proxy] Streaming: ${url}`);
 
       return new NextResponse(response.body, {
@@ -129,13 +129,15 @@ async function handleRequest(request: NextRequest, method: 'GET' | 'HEAD') {
         },
       });
     } else {
-      const data = await response.text();
-      console.log(`[OPDS Proxy] Success: ${url} (${data.length} bytes)`);
+      const buf = await response.arrayBuffer();
+      const length = buf.byteLength;
+      console.log(`[OPDS Proxy] Success: ${url} (${length} bytes)`);
 
-      return new NextResponse(data, {
+      return new NextResponse(buf, {
         status: 200,
         headers: {
           'Content-Type': contentType,
+          'Content-Length': length.toString(),
           'Cache-Control': 'public, max-age=300',
           'Access-Control-Allow-Origin': '*',
           'Access-Control-Allow-Methods': 'GET, HEAD, OPTIONS',
diff --git a/apps/readest-app/src/app/opds/page.tsx b/apps/readest-app/src/app/opds/page.tsx
index e83018bf..280daf60 100644
--- a/apps/readest-app/src/app/opds/page.tsx
+++ b/apps/readest-app/src/app/opds/page.tsx
@@ -414,7 +414,7 @@ export default function BrowserPage() {
           }
           return;
         } else {
-          const pathname = new URL(url).pathname;
+          const pathname = decodeURIComponent(new URL(url).pathname);
           const ext = getFileExtFromMimeType(parsed?.mediaType) || getFileExtFromPath(pathname);
           const basename = pathname.replaceAll('/', '_');
           const filename = ext ? `${basename}.${ext}` : basename;
@@ -426,6 +426,7 @@ export default function BrowserPage() {
             let downloadUrl = useProxy ? getProxiedURL(url, '', true) : url;
             const headers: Record<string, string> = {
               'User-Agent': READEST_OPDS_USER_AGENT,
+              Accept: '*/*',
             };
             if (username || password) {
               const authHeader = await probeAuth(url, username, password, useProxy);
diff --git a/apps/readest-app/src/app/opds/utils/opdsReq.ts b/apps/readest-app/src/app/opds/utils/opdsReq.ts
index 47a657f9..39eadfc4 100644
--- a/apps/readest-app/src/app/opds/utils/opdsReq.ts
+++ b/apps/readest-app/src/app/opds/utils/opdsReq.ts
@@ -207,7 +207,7 @@ export const probeAuth = async (
   const fetchURL = useProxy ? getProxiedURL(cleanUrl) : cleanUrl;
   const headers: Record<string, string> = {
     'User-Agent': READEST_OPDS_USER_AGENT,
-    Accept: 'application/atom+xml, application/xml, text/xml',
+    Accept: 'application/atom+xml, application/xml, text/xml, */*',
   };
 
   // Probe with HEAD request
@@ -240,7 +240,8 @@ export const probeAuth = async (
     }
   }
 
-  return null;
+  // Komga returns 200 even if requires auth, so we return Basic auth header in this case
+  return createBasicAuth(finalUsername, finalPassword);
 };
 
 /**
@@ -265,7 +266,7 @@ export const fetchWithAuth = async (
   const fetchURL = useProxy ? getProxiedURL(cleanUrl) : cleanUrl;
   const headers: Record<string, string> = {
     'User-Agent': READEST_OPDS_USER_AGENT,
-    Accept: 'application/atom+xml, application/xml, text/xml',
+    Accept: 'application/atom+xml, application/xml, text/xml, */*',
     ...(options.headers as Record<string, string>),
   };