Is there really no file size limit? How does this compare to WeTransfer?

Unlike WeTransfer which caps free transfers at 2GB and charges $12/month for larger files, ButterShare has zero file size limits. Files stream directly between your device and the recipient's device with 100% privacy. Because zero bytes are stored on a cloud server, you can send 10GB, 50GB, 100GB, or even larger folders without paying a dime.

Do my files ever get uploaded to your servers?

Never. There is no cloud storage, no database caching, and no file hosting. Our connection broker is only used for a split-second handshake to connect the two browsers. Once the direct connection is open, bytes stream strictly device to device. Zero bytes are ever retained anywhere.

How secure is the transfer? Can anyone intercept my files?

ButterShare uses an encrypted browser connection between the paired devices. File bytes do not sit on ButterShare cloud storage, and the room server only helps the two devices find each other.

Does the recipient need to install an app or sign up?

No. The recipient simply visits ButterShare and enters your 6-character room code (or clicks your share link). The transfer initiates immediately inside their standard web browser on any phone, tablet, or computer. No accounts, no passwords, no app installs.

Can I transfer files wirelessly between any device (Windows, Android, iPhone, Mac)?

Yes, exactly. ButterShare brings seamless, wireless device-to-device file transfer to every operating system. You can send files directly between iPhone, Android, Windows PC, Mac, and Linux with zero cables, app installs, or cloud middleman.

Can I transfer whole folders without zipping them first?

Yes. Drag and drop any folder into ButterShare. It is automatically packaged in your browser and transferred intact with its full folder directory structure preserved.

What happens if someone closes their browser tab during a transfer?

Because files stream directly between devices in real time, both browser tabs must stay open until the transfer completes. If a connection drops, ButterShare alerts you immediately with instant reconnection options. Your original files never leave your device.

Why is ButterShare completely free? What's the catch?

Because ButterShare does not host or store your files on expensive cloud servers (like AWS or Google Cloud), our operating costs are negligible. We don't have massive storage bills to pay, so we never need to charge you subscription fees or limit your file sizes.

How does ButterShare differ from Wormhole's architecture?

Wormhole uses a hybrid approach: files under 5GB are uploaded to encrypted cloud storage for 24 hours so receivers can download asynchronously, and files from 5GB to 10GB stream device-to-device with a hard 10GB limit. ButterShare is 100% direct device-to-device with zero cloud storage, allowing you to stream massive files (100GB+) with no arbitrary file-size ceiling.

Can I close the browser tab after sharing the link?

Because ButterShare streams directly from sender to receiver with zero intermediate cloud storage, both devices must keep their browser tabs open until the transfer completes. If you need asynchronous 24-hour cloud storage for files under 5GB, Wormhole offers that convenience.

Wormhole Alternative (No 10GB Cap, 100GB+ Tested)

Why ButterShare

A Simpler, Faster Way to Transfer Files

Wormhole is a popular browser transfer tool, but it caps transfers at 10GB total (files under 5GB are cached on cloud servers for 24 hours, while 5GB–10GB files stream device-to-device). If your file exceeds 10GB, Wormhole cannot send it at all. ButterShare has no 10GB ceiling, streaming files beyond 100GB+ directly device-to-device with zero cloud storage.

Direct Browser Transfer

Encrypted Browser Transfer

Pure direct Architecture

Engineered for Maximum Speed & Privacy

No cloud storage middleman. Direct browser-to-browser streaming.

No App Installation

Runs instantly in any modern web browser. Share a link or 6-digit code without App Store downloads.

No ButterShare Size Limit (100GB+ Tested)

Send massive files, 4K videos, and raw datasets without hitting arbitrary paywalls or upload caps.

Zero Cloud File Storage

Your confidential files never rest on a third-party server. Direct browser-to-browser streaming.

Reliable Room Connection

Cloudflare helps set up the room and gives the transfer a fallback path for harder network conditions.

Streamlined 3-Step Flow

How to Use ButterShare as a Wormhole Alternative

Start transferring in seconds with zero software installation.

01Step 1

Drop Your Files

Open buttershare.com and drop any files or folders.

02Step 2

Share Room Link or Code

Send the 1-click room link or 6-character code to the recipient.

03Step 3

Stream Directly

Files transfer directly between browsers at maximum connection speed.

ButterShare vs Wormhole Feature Comparison

Honest comparison of limits, speeds, and privacy.

Key Features	ButterShare Direct	Wormhole
Maximum File Limit	No limits (100GB+ tested)	10GB hard cap (files >10GB fail)
Cloud Server Storage	Zero cloud file storage	Files <5GB stored on cloud servers for 24h
Recipient Offline Support	Requires both devices online	Yes, cloud link valid 24 hours (files <5GB)
Direct-to-Disk Streaming	Yes (File System Access API)	WebTorrent / browser blob

Frequently Asked Questions

Got questions? We've got answers

Everything you need to know about wormhole alternative, transfer limits, and privacy.

Browse Platforms & Alternatives

Ready to Transfer Files Without Limits?

Drop any file or folder above to start an instant device-to-device stream. No accounts, no subscriptions, 100% free.

No 2GB File Limits

100% Private (0 Bytes Stored)

Every Device & Browser

Wormhole Alternative,Share anything. No limits.

Drop any files or folders here