Secure Ways to Send Large Files in 2025

Sending large files over the internet has become a daily need for people all over the world. From sharing high quality videos to sending important business documents, the demand for fast, simple, and secure transfer tools keeps rising. But sending big files is not so easy when you also have to worry about file size limits, privacy, and keeping your data safe.

In this post, you will learn why file security matters, what problems people face when sharing large files online, and how a privacy-first service like Transfer.zip can help make secure transfers stress free.

Why Security Matters for Big File Transfers

It almost sounds too simple, but file transfers can be risky. Here are a few reasons why:

Sensitive content: You might be sending private photos, work documents, or important records.
Privacy leaks: Many services keep copies of your files or use cookies to track you.
Hacking risks: If files are not encrypted, hackers can steal or change them during transfer.
Data retention: Files left too long on servers could fall into the wrong hands.

A 2023 article from ProtonBlog points out how using normal email services is not enough for large files or strong privacy. Email attachments are often limited to 25MB, and even cloud services many times keep the decryption keys, so you can’t be fully sure who accesses your files.

Popular Ways to Send Large Files Securely

1. Cloud Storage (Google Drive, Dropbox, OneDrive, etc.):

Good for sharing with a link.
But, they keep the keys and may read your files for ads or service improvements.
File size limits often range from 2GB to 15GB per file, unless you pay.

2. File Transfer Services (like WeTransfer):

Often free for small files, with paid plans for larger uploads.
Encryption in transit, but files usually stored and sometimes scanned.
Many have file size and expiry time limits (like 2GB/7 days for free users).

3. FTPS/SFTP:

Secure file transfer protocols often used in work settings.
Needs technical setup, servers, and is less user-friendly.

4. Physical Storage (USB drives, parcels):

No size limits, but risk of getting lost or stolen during delivery.
No way to track if files get opened or copied.

5. Privacy-Focused Services:

Some new online tools focus more on privacy, encryption, and usability.
They may offer features like end-to-end encryption, minimal data retention, and no tracking.

What Makes a Privacy-First Service Stand Out?

Many people are now looking for ways to send big files without giving up privacy or control. Here are what makes a secure tool actually great in 2025:

No File Size Limits: You should be able to send any file, even over 100GB, without breaking it up.
No Tracking or Ads: Privacy-focused tools do not use tracking cookies or share user data.
Strong Encryption: AES-256 and end-to-end encryption are standard for real privacy.
Simple User Experience: Easy interfaces and clear steps mean even non-tech people can use it.
User Control: Ability to set download limits, link expiry time, and delete files at any time.

A Closer Look: Transfer.zip

Transfer.zip is one of these new services built for security and ease. Here is a quick overview of how it matches the top needs for 2025 file sharing:

Screenshot of Transfer.zip homepage:

No File Size Limits: Whether you want to share a 5MB PDF or a 400GB video, it handles all sizes (even through “Quick Share” mode – with no server storage at all).
Real Privacy: They don't use tracking cookies and only collect the real minimum info for paying customers. Quick Share transfers are end-to-end encrypted and not saved anywhere.
Custom Controls: You pick how long files are stored (up to a year on Pro, 14 days on Starter) or use Quick Share for “send it and forget it” transfers. Links can be enabled or disabled anytime.
Send and Receive Easily: Create upload links for others to send you big files, even if they don’t have an account.
Extra Tools: Zip or unzip and convert image formats (HEIC to JPG) in your browser, without your files leaving your device.
Transparent Pricing: There is a simple free tier plus paid plans, with no renewal tricks or upselling annoyances.

Strengths and Weaknesses

Let’s compare what makes privacy-first services like Transfer.zip stand out and where they still have some challenges:

Strengths:

Great for very large files – no size limit hurdles.
Strong privacy with no tracking or ads.
Flexible for many use cases – business, personal, creative work, and more.
Simple and clear pricing – no “free trap” or complicated upgrades.

Weaknesses:

Some features (like longer storage time) only for paid users.
Quick Share needs both devices online at the same time.
As with any online service, upload and download speeds rely on your internet connection.

FAQ

How do I know a file transfer tool is secure?
Check if they use end-to-end encryption and do not keep your files longer than you want. See if they avoid tracking cookies and have clear privacy policies.

Why not email big files?
Most email providers limit attachment sizes and are not fully encrypted by default, so they are not safe for sensitive data or large files.

Can I send huge videos to non-tech friends or clients?
Yes, services like Transfer.zip allow you to make simple download links or receive upload links, so sharing is easy for anyone.

Will my files be stored forever online?
Most secure services let you set an expiry time. Using Quick Share or similar, files are not saved at all after the transfer ends.

Are free file sharing tools safe to use?
Some are, but always check their privacy policy. Many free tools use ads or collect your data. It’s better to choose a tool that clearly says what happens to your files.

When sending large files today, privacy and control matter more than ever. Choosing a service that skips file size limits and puts your data first helps you keep your work or personal stuff safe and easy. Next time you have big files to move, try a privacy-first solution. If you are curious, check out Transfer.zip to see how file transfer can be simple and secure at the same time.