In the age of cloud storage and messaging apps, the need to quickly transfer large amounts of data between devices remains a pressing issue, especially when the internet connection is unstable or completely unavailable. Situations often arise where you urgently need to transfer gigabytes of photos, video archives, or heavy work projects from one computer to another while in the same room. Using USB drives becomes inconvenient due to their slow write speed, and a wired connection like Ethernet requires a cable and the appropriate ports.
Fortunately, modern technology makes it possible to organize high-speed data exchange using an existing wireless network. Local Wi-Fi network Provides enough bandwidth to comfortably handle files of any size, provided the hardware is configured correctly. You don't need to be a network administrator to accomplish this task, as most operating systems have built-in tools for this.
In this article, we'll explore the most effective methods, from classic public access to specialized software. You'll learn how to set up Windows or macOS for working in a unified space, and what nuances should be considered to achieve maximum speed. The right approach will eliminate cable issues and cloud service limitations.
Preparing equipment and checking the network
Before configuring the software, you need to ensure the physical connection is possible. Both laptops must be connected to the same wireless network. This means they must use the same router and, preferably, operate on the same frequency. If one device is connected to a guest network and the other to the main network, direct data exchange may be blocked by the router's security settings.
To achieve the best speed, it is recommended to use the range 5 GHz, which provides higher throughput than the classic 2.4 GHz band. However, it's worth keeping in mind that the 5 GHz band has a shorter range, so laptops should be located close to the access point. Check the connection status in the system tray or system settings to avoid connection interruptions during transmission.
⚠️ Caution: If you're in a public place (cafe, airport), network security settings may block direct connections between devices (Client Isolation). In such cases, use methods that involve creating your own access point or special intermediary programs.
It's also important to ensure both devices have up-to-date antivirus and firewall software installed, but that they aren't blocking local traffic. Sometimes security software can interpret an attempt to connect to another computer as an external attack. Ensure the current network profile is marked as "Private Network," which automatically opens the necessary ports for local traffic.
Windows Shared Folder Method (SMB)
The most native way to transfer data between computers running Windows 10 or Windows 11 — this is the use of the "Sharing" function. This method does not require the installation of additional software and is based on the protocol SMB (Server Message Block). It's ideal for regular file sharing on a home or office network.
First, select the folder you want to share with other devices. Right-click it, select "Properties," and then go to the "Sharing" tab. Here, click "Advanced" and check the box next to "Share this folder." Under the access permissions, ensure that users can not only read but also modify files if you plan to transfer data from another laptop.
After setting up the folder on the receiving device (or on both devices, if sharing is bidirectional), open File Explorer and go to the "Network" section. If the computers aren't immediately visible, you may need to enable network discovery. A notification will appear at the top of the window indicating that network discovery is disabled. Click it and select "Turn on network discovery and file sharing."
☑️ Setting up a shared folder
When you see the second laptop's name in the list of network devices, simply log in. The system may prompt you for the username and password of the user account that has access rights. After successful authorization, you will have full access to the shared folder and will be able to copy files as if they were on a local drive.
⚠️ Caution: When using public Wi-Fi networks, the SMB method may be insecure. Attackers on the same network could theoretically try to access your data. Use strong passwords for your accounts.
It's worth noting that SMB transfer speeds directly depend on the Wi-Fi signal quality and bandwidth usage. If the network is actively downloading torrents or watching 4K video, file transfer speeds may drop significantly. This is acceptable for occasional operations, but for ongoing work with large data sets, it's better to consider creating a dedicated local network.
Using built-in macOS tools and AirDrop
If your laptops are running macOS, the process of transferring files becomes even easier thanks to technology AirDropThis feature uses a combination of Bluetooth to discover devices and Wi-Fi for direct data transfer, creating a secure, encrypted connection. AirDrop works even without an internet connection or router, creating a direct link between devices.
To send a file, open Finder and select the desired document, photo, or video. Right-click (or swipe two fingers on the trackpad) and select "Share," then "AirDrop." In the window that opens, you'll see the avatars of nearby devices. Click the recipient's avatar, and a confirmation message will appear on their screen.
It's important that both laptops have Wi-Fi and Bluetooth enabled, and that they are visible to Contacts or Everyone. AirDrop doesn't require the same Wi-Fi network; the devices will find each other directly. However, the distance between them should not exceed 9 meters for Bluetooth search to work reliably.
For users Windows, who need to transfer files to Mac Conversely, the built-in File Sharing feature in macOS also supports the SMB protocol. You can set up a shared folder on your Mac and connect to it from a Windows laptop using File Explorer by entering the Mac's IP address in the address bar.
When transferring large video files in ProRes or RAW format via AirDrop, the speed may be limited by the Wi-Fi module's bandwidth. In such cases A direct Thunderbolt or USB-C cable connection will give you a tenfold increase in speed., but for everyday tasks, Wi-Fi remains the most convenient solution. The system automatically selects the best channel and transmission standard.
Specialized software for fast transfer
When built-in tools seem too complex or unstable, third-party programs designed specifically for fast data transfer come to the rescue. The leader in this niche is the utility Shareit or its open analogues like LocalSendThese programs create their own temporary network or use P2P technologies to transfer data without the use of a router.
The principle is simple: you install the app on both laptops, launch it, and scan the QR code or select the device from the list. Once connected, files are transferred directly, bypassing complex Windows or macOS settings. The advantage of such programs is their cross-platform nature—they easily connect. Android, iOS, Windows And Linux.
| Program | Platforms | Speed | Do you need internet? |
|---|---|---|---|
| LocalSend | All OS | High | No |
| Shareit | All OS + Mob. | Average | No (for transfer) |
| Feem | Win, Mac, Linux | High | No |
| Snapdrop | Browser | Depends on the browser | No (local IP required) |
The service deserves special attention Snapdrop, which requires no installation. Simply open snapdrop.net on both laptops in a browser (Chrome, Firefox, or Edge), and the devices will see each other. This works thanks to WebRTC technology, which allows browsers to exchange data directly. This is ideal if you don't want or can't install software.
When using third-party software, carefully monitor the permissions you grant to the app. Some programs may request access to the entire file system, which isn't always necessary for simple transfers. Choose open-source solutions or those from reputable developers to minimize the risk of data leakage.
Organizing a home network and creating a group
For those who plan to constantly exchange data between multiple devices, it makes sense to create a full-fledged homegroup or use the Home Networking feature (although it has been deprecated in new versions of Windows 10/11 in favor of simplified sharing). The main goal here is static IP addressing or MAC address reservation in the router.
If you assign each laptop a permanent IP address (e.g., 192.168.1.10 and 192.168.1.11), you won't have to search for the device on the network every time. You can simply enter the address into the path bar in File Explorer. \\192.168.1.10 and instantly access resources. This is especially convenient for mapping network drives, where the remote folder appears as a regular drive (e.g., Z:).
Setting up a static IP is done in the Wi-Fi adapter settings. Go to Control Panel → Network and Internet → Network and Sharing Center, select your Wi-Fi adapter, click "Properties," then "Internet Protocol Version 4 (TCP/IPv4)." Enter the required information manually, making sure it's within your router's subnet.
⚠️ Important: When manually configuring IP addresses, make sure the selected address is not in the router's DHCP pool range, otherwise an address conflict may occur and one of the devices will lose connection to the network.
Modern routers also allow you to create guest networks isolated from your main network. This is a great way to securely transfer files to a guest or colleague without giving them access to your personal folders and printers. Simply connect both laptops to the guest network and use browser-based or dedicated software transfer methods.
Diagnosing problems and increasing speed
Even with proper setup, users may experience slow transfer speeds or connection drops. Most often, the problem stems from airwave congestion. If there are many neighboring Wi-Fi networks nearby, especially at 2.4 GHz, the channel may be clogged. In this case, switching to a less congested channel in the router settings or switching to 5 GHz can help.
Another common cause of low speeds is the Wi-Fi adapter's power-saving mode. Windows may try to conserve power by reducing the transmit power. To fix this, open Device Manager, locate your wireless adapter, go to Properties → Power Management, and uncheck "Allow the computer to turn off this device to save power."
It's also worth checking whether background applications have speed limits enabled. Torrent clients, cloud syncing apps, and game updates can consume a significant portion of your bandwidth. Close unnecessary programs before transferring a large file to ensure you're fully utilizing the file-sharing service.
If file transfers are choppy, try reducing the clipboard size in your network adapter settings (under the "Advanced" tab in the adapter properties). This setting may be called "Transmit Buffers" or "Receive Buffers." Experimenting with these values can sometimes help stabilize the connection on unstable channels.
Is it possible to transfer files if one laptop has no screen?
Yes, this is possible, but it requires some setup. If the "blind" laptop is already set up for shared access or an FTP server is running, you can connect to it via its IP address from the other device. You can also use remote control (RDP, TeamViewer), if it was previously installed.
Is it safe to share personal photos over a shared office Wi-Fi network?
No, it's better to use encryption on public and office networks. The SMB protocol may not encrypt traffic by default. Use end-to-end encryption programs (like LocalSend) or create password-protected archives before sending.
Why is the Wi-Fi transfer speed lower than stated on the router?
The advertised speed (e.g., 1200 Mbps) is the theoretical maximum of the total channel. The actual speed is split equally between receiving and transmitting, and is reduced by interference, distance, and protocol overhead. The actual payload speed is typically 40-60% of the theoretical speed.
How to transfer files between Windows and Linux?
The best way is to use the Samba protocol. On Linux, install the samba package, configure the /etc/samba/smb.conf configuration file, and share the folder. Windows will see the Linux computer on the network as a regular network device. Cross-platform programs like Resilio Sync also work well.