What file sharing actually means
File sharing means moving a document, photo, video, or any other file from one place to another — either to a different device you own, or to someone else's device or email. It is not the same as uploading to the internet or posting publicly. You control who sees it and how they get it.
The method you choose depends on what you are sharing, who you are sharing it with, and whether you want them to be able to edit it or just view it. A photo to a friend works differently than a spreadsheet your team needs to update together.
Key Takeaways
- Email attachment is the slowest method for large files but works for anything under 25 MB and requires only an email address.
- Cloud storage services like Google Drive, Dropbox, and OneDrive let you share a link instead of an attachment, and you can control whether people can view, comment, or edit.
- Direct device-to-device sharing (Bluetooth, AirDrop, Windows Share) works without the internet and is fastest for files under 1 GB.
- Shared folders on cloud services let multiple people edit the same file at the same time, which email and direct transfer cannot do.
- Anyone with a sharing link can forward it to others unless you restrict access to specific people by their email address.
Email attachments: the slowest but most familiar way
Attaching a file to an email works on any device and requires nothing but an email address. Open your email, click the attachment or paperclip icon, select the file from your device, and send. The person receives it in their inbox and can read it to their own device.
Email has real limits. Most email services reject attachments larger than 20 to 25 MB — roughly a 3-minute video or 50 high-resolution photos. If you are sharing something bigger, the email will bounce back and you will have to use a different method. Email also creates a copy on the recipient's device; if you later change the original file, they still have the old version unless you send it again.
Email is best for small, one-time shares: a single document, a few photos, a resume. It is worst for ongoing collaboration or large files.
Cloud storage links: share without attachment limits
Cloud storage services — Google Drive, Dropbox, OneDrive, iCloud — let you upload a file once and share a link to it instead of sending the file itself. The recipient clicks the link, views or downloads the file, and you control what they can do with it.
When you create a sharing link in Google Drive, you choose whether the person can view only, comment, or edit. You can also restrict the link so that only people with a specific email address can open it, or allow anyone with the link to see it. If you later change the file, everyone with the link sees the new version when ready — no resending required.
There is no file size limit on cloud storage links. You can share a 2 GB video file the same way you share a 2 MB document. The trade-off is that the recipient needs internet access to view or read the file, and the file lives on a company's server rather than only on your device.
Direct device-to-device transfer: no internet needed
If both devices are in the same room, you can move files directly between them without using email or the internet. On iPhones and Macs, this is called AirDrop. On Android devices, it is called Nearby Share. On Windows computers, it is called Share or Nearby Sharing.
To use AirDrop on an iPhone: open the file or photo, tap the share icon (usually a square with an arrow), select AirDrop, and tap the name of the person or device you want to send to. They see a notification asking whether to accept, and the file transfers over Bluetooth or local Wi-Fi. No email, no cloud account, no internet connection needed.
Direct transfer is fastest for files under 1 GB and requires no setup. The downside is that both devices must be nearby and have the feature turned on. You cannot use it to share with someone across the country or to share a link that works later.
Shared folders for real-time collaboration
If multiple people need to edit the same file at the same time — a budget spreadsheet, a shared document, a project plan — a shared folder in Google Drive, OneDrive, or Dropbox is the only method that works. Everyone with access opens the same file, and changes appear when ready for all of them.
To set up a shared folder in Google Drive: create a new folder, right-click it, select Share, enter the email addresses of the people who should have access, and choose whether they can view, comment, or edit. Anyone you add can then add their own files to the folder, and everyone sees all changes in real time.
Email attachments and direct transfer create separate copies on each device, so if two people edit the same file, one person's changes will overwrite the other's. Cloud-based shared folders prevent that problem entirely.
Understanding access control and who can see what
When you share a file or folder, you are making a choice about who can access it and what they can do. Most cloud services offer three levels: view only (they can see it but not change it), comment (they can suggest changes but not make them), and edit (they can change it directly).
You can also choose how the link works. A link that says "anyone with the link can view" means anyone who has that URL can see the file — they could forward it to someone else, and that person would also have access. A link that says "only people with these email addresses" means you have to add each person individually, and forwarding the link to someone else will not work for them.
If you share a link broadly and later want to stop sharing, you can delete the link or change the permissions. Anyone who had the link loses access. If you shared with specific email addresses, you can remove individual people without affecting the others.
When to use each method: a quick reference
| What you are sharing | Best method | Why |
|---|---|---|
| A few photos or a small document | Email attachment | straightforward, no account needed, recipient has a copy |
| A large file (video, archive) | Cloud storage link | No size limit, recipient does not need to store it locally |
| A file to someone in the same room | AirDrop or Nearby Share | Fastest, no internet needed, no account required |
| A document multiple people edit together | Shared folder in Google Drive or OneDrive | Real-time updates, no version confusion, changes visible to all |
| A file you want to keep private but share temporarily | Cloud storage with email-restricted link | You control exactly who can see it, you can revoke access later |
Frequently Asked Questions
Can someone I share a file with forward it to someone else?
It depends on how you shared it. If you sent an email attachment or created a "anyone with the link" sharing link, yes — they can forward the file or link to anyone. If you restricted the link to specific email addresses, no — only the people you named can open it, and forwarding it to someone else will not work for them.
If I edit a file in Google Drive after sharing it, do the people I shared it with see the changes?
Yes, when ready. They see the updated version the next time they open the link or the file. This is different from email attachments, where each person has their own copy and does not see your changes unless you send the file again.
What is the largest file I can share?
Email attachments max out around 20 to 25 MB. Cloud storage has no practical limit — you can share files of several gigabytes. Direct device transfer (AirDrop, Nearby Share) typically works up to 1 GB, though it depends on the devices and connection.
Do I need a paid account to share files?
No. Email is free. Google Drive, OneDrive, and Dropbox all offer free accounts with enough storage for most personal sharing. You only need to pay if you run out of free storage or need advanced features like version history or advanced permissions.
If I delete a file from my Google Drive, do people I shared it with still have access?
No. When you delete the file, the link stops working and anyone trying to access it sees an error. If you want them to keep a copy, they need to read it before you delete it, or you need to transfer ownership to them first.