PrusaLink setup: connect a Prusa printer on your network

To set up PrusaLink, connect the printer to your network by 2.4 GHz Wi-Fi or Ethernet and read its IP address under Settings > Network. Type that address into a browser on the same network, then log in with the user and password listed under Settings > Network > PrusaLink.

PrusaLink works only inside your local network. For access from anywhere, see PrusaLink vs Prusa Connect, which compares it with Prusa’s cloud service. Menu names below follow Prusa’s Knowledge Base and the source of printer firmware 8.0.0 (November 3, 2026).

PrusaLink on the MK4, CORE One, XL and MINI

Prusa lists PrusaLink as built in on the CORE One, XL, MK4, MK3.9 and MK3.5 families, and on the MINI once networking is set up. All of them run the same firmware line: version 8.0.0 covers the CORE One, CORE One+, CORE One L and L+ (INDX versions included), XL and XL+, MK4 and MK4S, MK3.9 and MK3.9S, MK3.5 and MK3.5S, and MINI and MINI+.

How do you set up PrusaLink?

Connect the printer to your network, read its IPv4 address on the screen, and open that address in a browser on the same network. PrusaLink is switched on by default, so once the printer has an address, the login page loads. Wi-Fi goes through the Wi-Fi Wizard; Ethernet needs only a cable.

How to set up PrusaLink, step by step

1. Choose the interface. On the printer, open Settings > Network > Active Interface (called “Default” on older firmware) and pick Wi-Fi or Ethernet.
2. Plug in Ethernet, or open the Wi-Fi Wizard. For a wired connection, plug a network cable into the port on the back of the printer and skip to step 4. For Wi-Fi, the wizard opens on first start; otherwise open Settings > Network > Wi-Fi > Wi-Fi Wizard.
3. Enter the Wi-Fi details. On an MK4S, the Prusa Mobile app can send them by NFC: follow the on-screen prompt and hold the phone 2 to 3 cm from the NFC antenna. On any model, choose Scan networks, pick your network and type the password on the on-screen keyboard. A third route uses a file on the USB drive, covered in the next section.
4. Check the connection. A white Wi-Fi icon at the top of the screen means connected; a grey one means Wi-Fi is on but has not joined the access point. A wired connection shows its own icon.
5. Read the IP address. Open Settings > Network and note the IPv4 Address. In firmware 8.0.0 it sits one level down, under Network Status, Wi-Fi, Ethernet or PrusaLink.
6. Open PrusaLink. On a computer on the same network, type http:// followed by the IP address (for example http://192.168.0.42) into the browser’s address bar.
7. Log in. Use the User and Password shown under Settings > Network > PrusaLink. The user is maker; the password and how to change it are covered in the PrusaLink password.

Prusa recommends Chrome or Firefox for the login, because Safari and Edge can have login problems.

Wi-Fi from a file (prusa_printer_settings.ini)

Use this when you would rather type the network name and password on a computer. In the Wi-Fi Wizard, choose Load config from file. On firmware 6.0.0 or newer the printer waits for a valid file; older firmware writes a prusa_printer_settings.ini file to the USB drive for you.

• PrusaSlicer (Prusa’s recommended route): connect the printer’s USB drive to your computer. If the Wi-Fi window does not open by itself, choose Configuration > Wi-Fi Configuration File. Fill in SSID (the network name) and Password, check that Drive points at the printer’s USB drive and click Write. The MINI guide says this needs PrusaSlicer 2.7.0 or later.
• Text editor: create or open prusa_printer_settings.ini on the USB drive and fill in the [wifi] section, with no spaces before or after the =:

[wifi]
ssid=YourNetworkName
psk=YourWiFiPassword

Put the drive back in the printer. Firmware 6.x and newer loads it on its own; to load it again, use Wi-Fi Wizard > Load config from file.

How do you find the PrusaLink IP address?

On the printer, open Settings > Network and read the IPv4 Address line. In firmware 8.0.0 that line appears under Network Status, Wi-Fi, Ethernet and PrusaLink; the MINI’s small screen labels it “IP”. Type http:// and the address into a browser on the same network to open PrusaLink’s web interface.

Your router hands out the address by DHCP (automatic addressing), and Prusa warns it “might change over time”. Three ways to keep the PrusaLink URL stable:

• Reserve the address in your router. Tell the router’s DHCP to always give the printer the same IP, matched to its MAC address (the hardware ID of its network connection). The printer lists a separate MAC Address under Settings > Network > Wi-Fi and under Ethernet, so reserve the one for the interface you use.
• Set a static IP on the printer. Add an [eth::ipv4] section (or [wifi::ipv4] for Wi-Fi) to prusa_printer_settings.ini with type=static plus addr, mask and gw. Load it with Settings > System > Load Settings from File, then restart. Prusa marks this “for experienced users only” and says to reserve the same address in the router to avoid conflicts.
• Use a hostname. On firmware 6.1.2 or newer, set one under Settings > Network > PrusaLink > Hostname. Then browse to http:// plus the name plus .local, as in Prusa’s example http://dragan1.local. Prusa notes hostnames “might not work on some networks”.

Using the PrusaLink web interface

The web page lets you monitor the printer, upload files and control prints without internet access. To print, open the Storage tab and click or drag a .gcode or .bgcode file into the marked area. Then open the file’s details and select Start Print. Files are stored on the printer’s USB drive.

Prusa lists three conditions for a print to start:

• A USB drive is in the printer.
• An empty, clean print sheet is on the heatbed.
• The printer is on its home screen. A prompt on the screen may make it reject remote commands.

The PrusaLink API that the web page is built on also covers pausing, resuming and stopping a job and deleting files. Uploads can be slower while the printer is printing, so Prusa suggests sending files when it is idle. Firmware 8.0.0 fixed a possible crash at the end of a PrusaLink upload.

How do you send prints from PrusaSlicer to PrusaLink?

Add the printer to PrusaSlicer as a physical printer: set Host Type to PrusaLink, enter the printer’s IP address, and paste the password from Settings > Network > PrusaLink into API Key / Password. After slicing, click the send button at the bottom right of the sidebar and choose Upload and Print.

1. Note the IP address and password. On the printer, Settings > Network > PrusaLink shows both. Prusa’s guide says the Password item is your PrusaLink API key.
2. Add a physical printer. In PrusaSlicer, click the cog icon next to the printer profile and choose Add physical printer. Name it and check that the right printer profile is assigned.
3. Fill in the connection. Set Host Type to PrusaLink and put the IP address in the Hostname, IP or URL field. Paste the password into API Key / Password, click Test, then OK.
4. Send a job. Slice, then click the send button at the bottom right of the sidebar. Prusa’s guide calls it the G> button; PrusaSlicer 2.9.7 labels it Send G-code. Name the file and choose Upload and Print, or Upload to store it without printing.
5. Watch the transfer. Window > Print Host Upload Queue shows the upload’s progress.

For more security, Prusa recommends switching Authorization Type from API key to HTTP digest. On the MK4 and XL the user name is then maker and the password is the same API key; the firmware uses maker on every printer it runs.

PrusaSlicer’s separate Prusa Connect tab sends jobs through Prusa’s cloud instead. Prusa calls the physical-printer route for Prusa Connect a legacy method; PrusaLink still goes through a physical printer.

Why is PrusaLink not connecting?

When PrusaLink will not connect, check five things: whether the printer joined the network (a 5 GHz-only Wi-Fi network blocks it), whether the computer is on the same network, whether the printer’s IP address changed, whether PrusaLink is switched on, and whether the browser handles the login. Start with the printer’s Wi-Fi status.

The status sits under Settings > Network > Wi-Fi (Prusa’s article gives the path as Settings > Network > Wi-Fi > Status). Work down this table in order:

Old firmware can also block connections. Prusa says printers with the xBuddy board on firmware older than 6.4.0 will be unable to connect. Firmware 7.0.0 added security fixes that touch PrusaLink (bulletin PSA-2026-002), and Prusa recommends going straight to 8.0.0. Until you update, Prusa’s bulletin says to keep the printer on a trusted network and not expose it to the internet.