The fastest way depends on file size and who you're sending to

Email inboxes have limits. Most email providers cap attachments at 25 MB, and some corporate systems go lower. If your file is bigger than that, email will reject it outright. For files under 25 MB, email works fine. For anything larger, you need a different method — usually a file-sharing service, a direct transfer tool, or cloud storage.

The right choice depends on three things: how big the file is, whether the person receiving it has a specific tool already, and how long you need the file to stay accessible. A video file might need a different approach than a database backup.

Key Takeaways

  • Email attachments max out at 25 MB on most services, so files larger than that need a different method.
  • Google Drive, Dropbox, and OneDrive let you share files of any size by sending a link instead of the file itself.
  • WeTransfer and similar services work without requiring the recipient to create an account, making them useful for one-time transfers.
  • Direct transfer tools like Syncthing or Resilio Sync keep files synced between computers without uploading to the internet.
  • For files over 1 GB, cloud storage or direct transfer is usually faster and more reliable than web-based services.

Using cloud storage to share files of any size

Cloud storage services — Google Drive, Dropbox, OneDrive, iCloud — let you upload a file once and share a link to it. The recipient clicks the link and downloads from there. This works for files of any size, and the recipient does not need to own a Dropbox account or Google account to access it.

To share a file on Google Drive: upload the file to your Drive, right-click it, select Share, and choose whether the link is viewable, commentable, or editable. Copy the link and send it however you want — email, text, messaging app. The recipient clicks the link and downloads.

Dropbox and OneDrive work the same way. The main difference is that Google Drive gives you 15 GB free, Dropbox gives 2 GB, and OneDrive gives 5 GB. If you are already paying for one of these services, use the one you have. If you are not, Google Drive is the easiest starting point.

One drawback: the file stays on the internet until you delete it. If you want the file to disappear after a certain date, or if you do not want it stored on someone else's servers, use a different method.

Sending files without requiring an account

WeTransfer and Tresorit Send let you upload a file and send a download link to someone without them needing to create an account. You visit the website, select your file, type the recipient's email address, and they get a link. The file usually expires after a week or two.

WeTransfer is free for files up to 2 GB. Tresorit Send is free for files up to 5 GB and encrypts the file in transit. Both are useful when you are sending to someone outside your organization or someone who does not use the same cloud storage you do.

The trade-off is speed. Uploading to WeTransfer means uploading to their servers first, which takes time on a slow connection. For a 500 MB file on a typical home internet connection, expect 5 to 15 minutes. For files over 2 GB, cloud storage you already own is usually faster because you are not uploading twice.

Transferring files directly between computers

If both computers are on the same network — like two computers in your home or office — you can transfer files directly without uploading to the internet. This is the fastest method for large files on a local network.

On Windows, right-click a folder, select Properties, go to the Sharing tab, and click Share. Choose who can access it and what they can do. On the other computer, open File Explorer, click Network, find the shared folder, and copy files from it.

On Mac, open System Settings, go to General > Sharing, enable File Sharing, and add the folder you want to share. On another Mac or Windows computer, open Finder or File Explorer, click Network, and connect to the shared folder.

For transfers between computers that are not on the same network, or for ongoing syncing, tools like Syncthing (free, open-source) or Resilio Sync (free tier available) let you sync folders between computers over the internet without uploading to a central server. These are more complex to set up but give you full control over where your files go.

Sending files over messaging apps

WhatsApp, Telegram, Signal, and similar apps let you send files up to a certain size — usually 100 MB to 2 GB depending on the app. If the recipient already uses the app and the file is within the limit, this is often the simplest method.

Open the chat, tap the attachment button (usually a paperclip or plus sign), select the file, and send. The file uploads to the app's servers and the recipient downloads it on their end. No links, no extra steps.

The downside is that file size limits are lower than cloud storage, and the file may not stay accessible after a certain time. Also, if you are sending to someone who does not use the app, this method does not work.

Choosing the right method for your situation

Start with this decision tree: If the file is under 25 MB, email is fine. If it is between 25 MB and 2 GB and the recipient does not have a cloud storage account, use WeTransfer. If the recipient uses Google Drive, Dropbox, or OneDrive, use the same service. If both computers are on the same network, use network sharing. If you need the file to sync automatically between computers over time, use Syncthing or Resilio Sync.

For most people sending a one-time large file to someone else, Google Drive is the default choice. It is free, it works on any device, and the recipient does not need an account. Upload once, share the link, and you are done.

Common mistakes that slow transfers down

Uploading a file to a web service and then emailing the link takes longer than just emailing the file if the file is under 25 MB. Do not use WeTransfer for a 10 MB file.

Compressing a file before uploading sometimes makes it smaller, but not always. Video and image files are already compressed, so zipping them does not help and adds an extra step. Text files, spreadsheets, and databases compress well. If you are unsure, try it — if the compressed file is not noticeably smaller, send the original.

Uploading on a slow connection and then wondering why it is taking hours is a common frustration. If your internet is slow, start the upload and leave it running. Do not keep checking on it or restarting it, which resets the progress. On a 5 Mbps connection, a 1 GB file takes roughly 30 minutes to upload.

Frequently Asked Questions

Can I send a file larger than 2 GB?

Yes. Google Drive, Dropbox, and OneDrive all support files larger than 2 GB. WeTransfer's free tier caps at 2 GB, but their paid plan goes higher. For very large files (over 10 GB), cloud storage is more reliable than web-based transfer services because the upload is more stable if interrupted.

What if the recipient says they did not receive the file?

If you sent a link, check that the link is still active and that you set the right permissions — sometimes a link is set to "view only" when the recipient needs to download. If you sent an email attachment, ask them to check their spam folder. If the file is over 25 MB, it may have been rejected by their email provider without either of you knowing.

Is it safe to use WeTransfer or similar services?

These services encrypt files in transit, but the file sits on their servers until it expires. If you are sending sensitive information like tax returns or medical records, use a service that encrypts the file with a password, like Tresorit Send, or use cloud storage you control and set a strong sharing password.

How long does a file stay on Google Drive after I share it?

As long as you do not delete it. The recipient can access the link indefinitely unless you change the sharing settings or remove the file. If you want it to expire automatically, use WeTransfer or Tresorit Send instead, which delete files after a set number of days.

Can I send a file to someone if I do not know their email address?

If you are using cloud storage, you can generate a public link and send it any way you want — text message, social media, messaging app. The recipient does not need to give you their email. If you are using WeTransfer or similar, you do need an email address to send the download link to.