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Uploading and managing files with File Manager and SFTP

When to use the built-in File Manager versus an SFTP client, where to find your SFTP credentials, and how to upload large files reliably.

Last updated July 16, 2026

There are two ways to get files onto your server: the built-in File Manager in your browser, and an SFTP client on your computer. Each is better for different jobs.

File Manager — quick edits and small uploads

Best for editing configs, reading logs, and dropping in a few files.

  1. Open your server and click File Manager in the sidebar.
  2. Navigate folders by clicking them (for example plugins/, mods/, world/, logs/).
  3. Edit a file: click it to open the in-browser editor, make changes, and click Save.
  4. Upload: click Upload, or drag files straight from your desktop into the file list.
  5. Create / rename / delete / compress: use the row menu or the buttons at the top.

The File Manager is perfect for a .jar or two, a config tweak, or checking logs/latest.log. It works on mobile too.

SFTP — large uploads and bulk transfers

For big modpacks, hundreds of files, or a whole world folder, a proper SFTP client is faster and far more reliable than a browser upload. We recommend FileZilla (Windows/Mac/Linux) or WinSCP (Windows).

Find your SFTP details

  1. Open the SFTP tab (it may be under Settings or shown on File Manager, depending on your game).
  2. You'll see:
    • Host and Port — the SFTP address (note it's a different port from your game connection).
    • Username — a long username unique to this server.
    • Password — your ServerPrism account password (the same one you log in with).

Connect

  1. Open FileZilla and enter the Host, Port, Username, and Password from above.
  2. Set the protocol to SFTP (not plain FTP).
  3. Connect. The right-hand pane is your server's files; drag files across from the left (your computer) to upload.

Tip: if a browser upload keeps failing on a large modpack or world, switch to SFTP — it resumes and handles thousands of small files without timing out.

Common issues

  • "Login failed" over SFTP: double-check you used the full username from the SFTP tab and your account password (not a server-specific password). Make sure the protocol is SFTP.
  • Uploads stall in the browser: the file is too big for a browser upload — use SFTP instead.
  • File saved but nothing changed in-game: most config changes only apply after a restart. Restart from the Console tab.
  • Permission denied editing a file: occasionally a modpack installer leaves files owned by the wrong user. Open a ticket and we'll fix the ownership.