Online JavaScript File Concatenator
Merge JS Files Effortlessly

Combine multiple JavaScript files into a single file. Drag files, reorder (by drag-and-drop or arrows), customize separators, and download—fully in your browser.

Drag & drop text files here or click to select

Up to 200 files. Recommended ≤ 5 MB each. Supports .js, .css, .html, .txt, etc. Nothing is uploaded.

How to Use

  1. Upload text files via drag-and-drop or click the drop area.
  2. Reorder files by dragging the items, or use the arrow buttons for precise moves.
  3. Adjust options (separators, banners, header/footer, IIFE, etc.).
  4. Click Concatenate to combine. Copy or download the output.

FAQ

Security? 100% client-side. No files leave your device.

Limits? Up to 200 files recommended; try to keep each ≤ 5 MB. Large totals may be slow in the browser.

File Types? Supports any text-based files (.js, .css, .html, .txt, .json, etc.).

Minification? Not included; this only concatenates.