diff --git a/app/static/index.html b/app/static/index.html
index e6d41cb..baa750c 100644
--- a/app/static/index.html
+++ b/app/static/index.html
@@ -870,11 +870,23 @@ document.getElementById('cprompt-toggle-or').addEventListener('click',()=>{const
 document.querySelectorAll('.mode-btn').forEach(btn=>{btn.addEventListener('click',()=>{document.querySelectorAll('.mode-btn').forEach(b=>b.classList.remove('active'));btn.classList.add('active');ocrMode=btn.dataset.mode;document.getElementById('mode-desc').textContent=ocrMode==='structure'?'표 구조를 감지하고 Excel로 저장합니다':'일반 텍스트와 글자를 인식합니다'})});
 document.getElementById('ocr-btn').addEventListener('click',async()=>{
   if(!ocrFile)return;document.getElementById('ocr-err').style.display='none';setOcrLoading(true);
-  const fd=new FormData();fd.append('file',ocrFile);fd.append('mode',ocrMode);fd.append('ollama_model',document.getElementById('ocr-ollama-model').value||'');fd.append('custom_prompt',document.getElementById('custom-prompt').value||'');
+  const fd=new FormData();
+  fd.append('file',ocrFile);
+  fd.append('mode',ocrMode);
+  fd.append('backend',ocrEngine);
+  // Ollama 모델
+  fd.append('ollama_model', ocrEngine==='ollama' ? (document.getElementById('ocr-ollama-model').value||'') : '');
+  // OpenRouter 모델
+  fd.append('openrouter_model', ocrEngine==='openrouter' ? (document.getElementById('ocr-or-model').value||'') : '');
+  // 커스텀 프롬프트 (엔진별)
+  const cp = ocrEngine==='openrouter'
+    ? (document.getElementById('custom-prompt-or').value||'')
+    : (document.getElementById('custom-prompt').value||'');
+  fd.append('custom_prompt', cp);
   try{const r=await api('POST','/api/ocr',fd);const d=await r.json();if(!r.ok)throw new Error(d.detail||'업로드 실패');pollTask(d.task_id,dt=>setProg('ocr',dt.progress||0,dt.message||'처리 중...'),showOcrResult,e=>{showErr('ocr-err',e);setOcrLoading(false)})}
   catch(e){showErr('ocr-err',e.message);setOcrLoading(false)}
 });
-function setOcrLoading(on){const io=ocrEngine==='ollama',c=io?'var(--purple)':'var(--accent)';document.getElementById('ocr-btn').disabled=on;document.getElementById('ocr-prog').style.display=on?'block':'none';document.getElementById('ocr-wave').style.display=on?'flex':'none';document.getElementById('ocr-pfill').style.background=c;document.getElementById('ocr-ppct').style.color=c;document.querySelectorAll('#ocr-wave .wave-bar').forEach(b=>b.style.background=c);if(on)setProg('ocr',0,'준비 중...')}
+function setOcrLoading(on){const io=(ocrEngine==='ollama'||ocrEngine==='openrouter'),c=io?'var(--purple)':'var(--accent)';document.getElementById('ocr-btn').disabled=on;document.getElementById('ocr-prog').style.display=on?'block':'none';document.getElementById('ocr-wave').style.display=on?'flex':'none';document.getElementById('ocr-pfill').style.background=c;document.getElementById('ocr-ppct').style.color=c;document.querySelectorAll('#ocr-wave .wave-bar').forEach(b=>b.style.background=c);if(on)setProg('ocr',0,'준비 중...')}
 function showOcrResult(d){
   ocrOutputTxt=d.txt_file||null;ocrOutputXlsx=d.xlsx_file||null;const io=d.backend==='ollama';
   document.getElementById('ocr-mlines').textContent=(d.line_count||0)+'줄';document.getElementById('ocr-mmode').textContent=d.mode==='structure'?'구조분석':'텍스트';document.getElementById('ocr-mbackend').textContent=io?`Ollama`:'Paddle';document.getElementById('ocr-mtables').textContent=(d.tables||[]).length+'개';