diff --git a/lib/og.js b/lib/og.js
index ee1d77b..1dea21f 100644
--- a/lib/og.js
+++ b/lib/og.js
@@ -519,6 +519,25 @@ export async function generateOgImages(contentDir, cacheDir, siteName, batchSize
     if (generated % SAVE_INTERVAL === 0) {
       writeFileSync(manifestPath, JSON.stringify(newManifest, null, 2));
     }
+      try {
+        const result = spawnSync('resvg', ["-w", String(WIDTH), "-b", COLORS.bg, "-o", outPath, "-"], { input: svg, encoding: null });
+        if (result.error) {
+          console.error(`[og] resvg CLI error for ${outPath}:`, result.error);
+          throw result.error;
+        }
+        if (result.status !== 0) {
+          console.error(`[og] resvg CLI failed for ${outPath}:`, result.stderr && result.stderr.toString());
+          throw new Error(result.stderr && result.stderr.toString());
+        }
+        if (!result.stdout || result.stdout.length === 0) {
+          console.error(`[og] resvg CLI produced no output for ${outPath}`);
+          throw new Error('resvg CLI produced no output');
+        }
+        console.log(`[og] Wrote: ${outPath}`);
+      } catch (e) {
+        console.error(`[og] Exception for ${outPath}:`, e);
+        require('fs').writeFileSync(outPath.replace(/\.png$/, '.svg'), svg);
+      }
 
     // Force GC to reclaim Satori/Resvg WASM native memory.
     if (hasGC && generated % GC_INTERVAL === 0) {