HTML OPF

Convert HTML to OPF

Free online converter — change .html files into .opf format instantly. Drag, drop, convert, download.

Drop your .html file here

or click to browse · max 100MB

🔒 Your file is processed in your browser where possible.

How to convert HTML to OPF

  1. 1 Upload your .html file using the dropzone above.
  2. 2 Click "Convert to OPF" and watch the progress bar.
  3. 3 Once complete, click Download to save your new .opf file.