FTP is a method for transferring files between computers over the internet

FTP stands for File Transfer Protocol. It is a set of rules that lets one computer send files to another computer across a network or the internet. Think of it like a postal service for digital files — it handles the job of getting a file from point A to point B reliably, without the file getting corrupted or lost along the way.

FTP has been around since the 1970s and is still widely used today, even though newer methods exist. Web developers use it to upload website files to servers. Businesses use it to share large files that are too big for email. System administrators use it to back up data or move files between machines. If you have ever uploaded a file to a website or downloaded something from a file server, FTP may have been working behind the scenes.

The reason FTP still matters is that it is simple, fast for large files, and works the same way on almost every operating system — Windows, Mac, Linux. It does not require special software on either end; most computers have the tools built in or can download a free FTP client in minutes.

Key Takeaways

  • FTP is a standard method for moving files between computers over the internet, used by web developers, businesses, and IT staff.
  • An FTP client is software you install on your computer to connect to an FTP server and upload or download files.
  • FTP sends files without encryption by default, so sensitive data should use SFTP (SSH File Transfer Protocol) or FTPS instead.
  • Common FTP clients include FileZilla, WinSCP, and Cyberduck, all of which are free and work on multiple operating systems.

How FTP works in practice

When you use FTP, your computer (the client) connects to another computer (the server) using a username and password. Once connected, you see the files on the server as if they were in a folder on your own machine. You can then drag files into that folder to upload them, or drag files out to download them.

The connection happens on a specific port — usually port 21 for standard FTP. The server listens on that port and waits for clients to connect. Once the connection is made, the two computers exchange commands and file data. The server confirms that each file arrived completely and without errors before the transfer is done.

This is different from downloading a file through a web browser. When you click a download link in your browser, you are using HTTP or HTTPS, which is designed for viewing web pages. FTP is designed specifically for moving files, and it handles large files and multiple files more efficiently than HTTP does.

FTP clients and how to use them

To use FTP, you need an FTP client — software that knows how to speak the FTP language. Popular free options include FileZilla (works on Windows, Mac, and Linux), WinSCP (Windows), and Cyberduck (Mac and Windows). These programs have a simple layout: your local files on the left, the server files on the right, and buttons to move files between them.

To connect, you enter the server address, your username, and your password into the client. The client then logs in and shows you what files are on the server. From there, uploading is usually as simple as dragging a file from your computer into the server window. Downloading works the same way in reverse.

Some web hosting companies provide FTP details when you sign up for a hosting plan. Others use a control panel like cPanel or Plesk, which has a built-in file manager that works like FTP but through your web browser instead. Both methods do the same job; the browser version is just more convenient if you are not comfortable installing software.

The security risk with standard FTP

Standard FTP has one major weakness: it does not encrypt your username and password. When you log in, those credentials travel across the internet in plain text, which means someone monitoring your network traffic could potentially see them. For this reason, standard FTP should not be used for sensitive files or on public networks.

Two safer alternatives exist. SFTP (SSH File Transfer Protocol) encrypts everything — your login, your password, and all the file data. FTPS (FTP Secure) wraps FTP in an encryption layer called SSL. Both are supported by modern FTP clients. If you are uploading files to a web server or moving confidential documents, ask your hosting provider or IT department whether they support SFTP or FTPS, and use one of those instead of plain FTP.

Most reputable hosting companies now disable standard FTP by default and require SFTP or FTPS. If your provider still offers only standard FTP, that is a sign to consider switching providers.

When FTP is the right choice

FTP works well when you need to move large files or many files at once. Uploading a 500 MB video file or 1,000 images through a web form would be slow and error-prone; FTP handles it much faster and will resume if the connection drops. It is also useful when you need to manage files on a remote server regularly — updating a website, backing up data, or organizing files in a shared folder.

FTP is less useful for one-time file sharing with someone outside your organization. For that, cloud storage services like Google Drive, Dropbox, or OneDrive are simpler because they do not require the other person to install software or know technical details like server addresses and port numbers.

If you are a web developer or system administrator, FTP (or more likely SFTP) is a tool you will use regularly. If you are a casual user, you may never need it directly, but understanding what it is helps you understand how files move around the internet and why your hosting provider asks for FTP credentials.

FTP versus other file transfer methods

Several methods exist for moving files across the internet, and each has a purpose. HTTP and HTTPS, which power the web, are designed for downloading files through a browser but are slower for large batches of files. Cloud storage services like Google Drive are convenient for sharing but require an internet connection and may have file size limits. Email attachments are simple but usually cap out at 25 MB per message.

FTP is faster than HTTP for large files, does not require a web browser, and does not have the same file size restrictions. It also gives you direct access to a folder on a server, so you can organize files, delete old ones, and manage permissions — things you cannot do with a simple download link.

For businesses moving terabytes of data or developers managing websites, FTP (or SFTP) is often the most practical choice. For casual users sharing a few files, cloud storage is usually simpler.

Setting up FTP on your own server

If you run your own server or web hosting account, your provider usually sets up FTP for you automatically. They give you a server address, username, and password, which you then enter into your FTP client. You do not need to configure anything yourself.

If you want to run your own FTP server — for example, to let employees upload files to a shared folder — you would install FTP server software on a computer that stays connected to the internet. Windows has a built-in FTP server you can enable through the Control Panel. Linux systems often use vsftpd or ProFTPD. Mac users can enable FTP through System Preferences, though SFTP is recommended instead.

Setting up your own server requires some technical knowledge and carries security responsibilities. You must keep the server software updated, use strong passwords, and ideally use SFTP instead of plain FTP. For most people, using a hosting provider's FTP service is simpler and safer than running your own.

Frequently Asked Questions

Is FTP the same as SFTP?

No. FTP is unencrypted, while SFTP encrypts your login and all file data. SFTP is more secure and is what you should use for sensitive files. Most modern FTP clients support both, so you can choose SFTP when connecting.

Do I need FTP if I use a website builder like Wix or Squarespace?

No. Website builders have their own file upload tools built into their dashboards. You only need FTP if you are hosting a website on a traditional web server and managing the files yourself.

Can I use FTP on my phone?

Yes, FTP client apps exist for both Android and iOS, though they are less common than desktop versions. Most people use FTP on a computer because the interface is easier to work with on a larger screen.

What should I do if I forget my FTP password?

Contact your hosting provider or system administrator. They can reset your FTP password or generate a new one. Do not try to guess it repeatedly, as many servers lock the account after several failed attempts.

Is FTP still used, or is it outdated?

FTP is still widely used, especially by web developers and IT professionals. However, SFTP is now the standard for security reasons. Most hosting providers support both, but SFTP is the better choice for any new setup.