diff --git a/src/api/middleware/logger.js b/src/api/middleware/logger.js
index d9790fa..cd14296 100644
--- a/src/api/middleware/logger.js
+++ b/src/api/middleware/logger.js
@@ -1,7 +1,29 @@
 import chalk from 'chalk';
 
+const BINARY_PREVIEW_BYTES = 16;
+
+function summarizeBuffer(buf) {
+    const head = buf.subarray(0, BINARY_PREVIEW_BYTES);
+    const hex = [...head].map((b) => b.toString(16).padStart(2, '0')).join(' ');
+    return {
+        type: 'Buffer',
+        length: buf.length,
+        headHex: hex,
+    };
+}
+
 function safeJson(value) {
     try {
+        if (Buffer.isBuffer(value)) {
+            return JSON.stringify(summarizeBuffer(value), null, 2);
+        }
+        if (
+            Array.isArray(value) &&
+            value.length > 64 &&
+            value.every((n) => Number.isInteger(n) && n >= 0 && n <= 255)
+        ) {
+            return JSON.stringify(summarizeBuffer(Buffer.from(value)), null, 2);
+        }
         return JSON.stringify(value, null, 2);
     } catch {
         return String(value);
@@ -46,6 +68,7 @@ export const loggerMiddleware = (req, res, next) => {
         console.log(`${method} ${url} ${status} ${chalk.gray(`(${duration}ms)`)}`);
         console.log(chalk.gray('  params:'), safeJson(req.params ?? {}));
         console.log(chalk.gray('  query:'), safeJson(req.query ?? {}));
+        console.log(chalk.gray('  content-type:'), req.headers['content-type'] ?? '(none)');
         console.log(chalk.gray('  body:'), safeJson(req.body ?? {}));
         console.log(chalk.gray('  response:'), safeJson(getBody()));
     });
diff --git a/src/api/routes/article.js b/src/api/routes/article.js
index f0c3164..64debe6 100644
--- a/src/api/routes/article.js
+++ b/src/api/routes/article.js
@@ -19,11 +19,6 @@ function articleErrorStatus(error) {
     return 500;
 }
 
-function isLikelyImageDecodeError(error) {
-    const msg = error?.message || '';
-    return /unsupported|corrupt|invalid|input buffer|vips/i.test(msg);
-}
-
 /**
  * Registers article routes (requires auth middleware).
  * @param {import('express').Application} app - Express app
@@ -346,9 +341,6 @@ export function register(app, basePath = '') {
                 const image = await db.addImage(req.user.id, decodeURIComponent(sku), imageBuffer);
                 res.status(201).json({ image });
             } catch (error) {
-                if (isLikelyImageDecodeError(error)) {
-                    return res.status(400).json({ error: 'Invalid image' });
-                }
                 const status = articleErrorStatus(error);
                 if (status === 500) console.error('Add article image failed:', error);
                 res.status(status).json({ error: error.message });