TXT CER

Convert TXT to CER

Free online converter — change .txt files into .cer format instantly. Drag, drop, convert, download.

Drop your .txt file here

or click to browse · max 100MB

🔒 Your file is processed in your browser where possible.

How to convert TXT to CER

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