diff --git a/test.html b/test.html
index 6e2d89c..5aa8c71 100644
--- a/test.html
+++ b/test.html
@@ -250,115 +250,6 @@
       try { return JSON.stringify(err); } catch { return String(err); }
     }
 
-    function toHexByte(n) {
-      return n.toString(16).padStart(2, "0");
-    }
-
-    function detectSignature(bytes) {
-      const b = bytes;
-      if (b.length >= 3 && b[0] === 0xFF && b[1] === 0xD8 && b[2] === 0xFF) return "jpeg";
-      if (b.length >= 8 && b[0] === 0x89 && b[1] === 0x50 && b[2] === 0x4E && b[3] === 0x47 && b[4] === 0x0D && b[5] === 0x0A && b[6] === 0x1A && b[7] === 0x0A) return "png";
-      if (b.length >= 12 && b[0] === 0x52 && b[1] === 0x49 && b[2] === 0x46 && b[3] === 0x46 && b[8] === 0x57 && b[9] === 0x45 && b[10] === 0x42 && b[11] === 0x50) return "webp";
-      if (b.length >= 6 && b[0] === 0x47 && b[1] === 0x49 && b[2] === 0x46 && b[3] === 0x38 && (b[4] === 0x37 || b[4] === 0x39) && b[5] === 0x61) return "gif";
-      if (b.length >= 12 && b[4] === 0x66 && b[5] === 0x74 && b[6] === 0x79 && b[7] === 0x70) return "mp4/heic-ish";
-      return "unknown";
-    }
-
-    async function inspectImageFile(file) {
-      const head = new Uint8Array(await file.slice(0, 16).arrayBuffer());
-      return {
-        name: file.name,
-        size: file.size,
-        mime: file.type || "(empty)",
-        signature: detectSignature(head),
-        magicHex: [...head].map(toHexByte).join(" ")
-      };
-    }
-
-    async function tryDecodeWithImageBitmap(blob) {
-      const bmp = await createImageBitmap(blob);
-      const info = { width: bmp.width, height: bmp.height };
-      bmp.close?.();
-      return info;
-    }
-
-    function loadImgFromBlob(blob) {
-      return new Promise((resolve, reject) => {
-        const url = URL.createObjectURL(blob);
-        const img = new Image();
-        img.onload = () => {
-          URL.revokeObjectURL(url);
-          resolve(img);
-        };
-        img.onerror = () => {
-          URL.revokeObjectURL(url);
-          reject(new Error("HTMLImageElement failed to decode."));
-        };
-        img.src = url;
-      });
-    }
-
-    function canvasToBlob(canvas, type = "image/png", quality = 0.92) {
-      return new Promise((resolve, reject) => {
-        canvas.toBlob((blob) => {
-          if (!blob) return reject(new Error("Canvas toBlob returned null."));
-          resolve(blob);
-        }, type, quality);
-      });
-    }
-
-    async function normalizeInputImage(file) {
-      const meta = await inspectImageFile(file);
-      appendLog("input meta:", meta);
-
-      if (/^\.pending-/i.test(file.name)) {
-        appendLog("warn:", "filename looks like temp/incomplete download:", file.name);
-      }
-
-      try {
-        const info = await tryDecodeWithImageBitmap(file);
-        appendLog("decode ok via createImageBitmap:", info);
-        return { blob: file, transcode: false };
-      } catch (bitmapErr) {
-        appendLog("createImageBitmap decode failed:", formatErr(bitmapErr));
-      }
-
-      try {
-        const img = await loadImgFromBlob(file);
-        const canvas = document.createElement("canvas");
-        canvas.width = img.naturalWidth || img.width;
-        canvas.height = img.naturalHeight || img.height;
-        const ctx = canvas.getContext("2d");
-        if (!ctx) throw new Error("Could not create 2D canvas context.");
-        ctx.drawImage(img, 0, 0);
-
-        const pngBlob = await canvasToBlob(canvas, "image/png", 0.92);
-        appendLog("fallback transcode success:", {
-          fromMime: file.type || "(empty)",
-          toMime: pngBlob.type,
-          toSize: pngBlob.size,
-          width: canvas.width,
-          height: canvas.height
-        });
-
-        try {
-          const verify = await tryDecodeWithImageBitmap(pngBlob);
-          appendLog("verify transcoded decode ok:", verify);
-        } catch (verifyErr) {
-          appendLog("verify transcoded decode failed:", formatErr(verifyErr));
-          throw verifyErr;
-        }
-
-        return { blob: pngBlob, transcode: true };
-      } catch (imgErr) {
-        appendLog("img/canvas fallback failed:", formatErr(imgErr));
-      }
-
-      throw new Error(
-        `Input image could not be decoded. name="${meta.name}", mime="${meta.mime}", signature="${meta.signature}", magic="${meta.magicHex}". Try a fully downloaded PNG/JPEG/WebP.`
-      );
-    }
-
     el.clear.addEventListener("click", clearResults);
     el.clearLog.addEventListener("click", () => { el.log.textContent = ""; });
 
@@ -396,11 +287,6 @@
           const file = files[i];
           setStatus(`processing ${i + 1}/${files.length}: ${file.name} ...`);
 
-          const normalized = await normalizeInputImage(file);
-          if (normalized.transcode) {
-            appendLog("input was transcoded to PNG for stability:", file.name);
-          }
-
           const config = {
             debug: true,
             output: {
@@ -417,7 +303,7 @@
 
           appendLog("calling removeBackground for:", file.name);
           const started = performance.now();
-          const outBlob = await removeBackground(normalized.blob, config);
+          const outBlob = await removeBackground(file, config);
           const ms = Math.round(performance.now() - started);
           appendLog("done:", file.name, `in ${ms}ms`, `blob=${outBlob.type} ${outBlob.size} bytes`);
 
@@ -452,3 +338,4 @@
   </script>
 </body>
 </html>
+