Send Large Files Free: No Size Limit, No Account
BoltShare is a free, browser-based tool for sending files of any size. There is no file size limit, no account and nothing to install, and files are never stored on a server: they stream live from your browser to the receiver's while both pages are open.
How to Send Large Files Peer-to-Peer for Free
BoltShare at a Glance
- Price: free. Supported by ads, with no paid tier and no premium limits.
- File size limit: none. Works for a 1 MB PDF or a 100 GB+ video folder.
- Accounts: none needed, for sender or receiver.
- Install: none. Runs in any modern browser on Windows, macOS, Linux, Android and iPhone.
- Storage: files are never saved on a server. The sender's tab must stay open until the transfer finishes.
- Two transfer modes: Bolt Tunnel (default) streams through a relay on Cloudflare's network and works on almost any network, including office, school and mobile networks; Direct P2P uses WebRTC to go device to device.
- Encryption: Direct P2P is end-to-end encrypted (WebRTC DTLS). Bolt Tunnel is TLS-encrypted to and from the relay, which forwards data in memory and never writes it to disk.
- Resume: if either connection drops, both sides reconnect and continue from the last byte the receiver confirmed.
- Large files: received files are written straight to disk as they arrive, so multi-gigabyte transfers do not fill browser memory.
- Folders and multiple files arrive as a single ZIP. Links can also be shared as a QR code.
- Best for: sending large files right now to someone who is online at the same time. Not suited to "upload now, they download tomorrow" — use an upload service like WeTransfer for that.
BoltShare vs WeTransfer, Smash, Google Drive and ToffeeShare
Upload services store your file so the receiver can download later. BoltShare streams it live, so there is no upload wait and no size cap, but both people need to be online.
| BoltShare | WeTransfer Free | Smash Free | Google Drive Free | ToffeeShare | |
|---|---|---|---|---|---|
| Size limit | None | 3 GB per 30 days | None, but over 2 GB is queued | 15 GB total storage | None |
| Account to send | No | Yes | No | Yes | No |
| Waits for full upload first | No, starts instantly | Yes | Yes | Yes | No |
| File stored on a server | Never | Up to 3 days | Up to 7 days | Until deleted | Never |
| Works on strict office / mobile networks | Yes (Bolt Tunnel) | Yes | Yes | Yes | Only if P2P connects |
| Resumes after a dropped connection | Yes | Upload only | Upload only | Upload only | Not documented |
| Receiver can download later, sender offline | No | Yes | Yes | Yes | No |
| Price | Free | Free / paid plans | Free / Pro | Free / Google One | Free |
Competitor details as of October 2026, from each service's own site. BoltShare is not affiliated with any of them.
Frequently Asked Questions
What is the best free way to send large files?
If the receiver can download while you are online, a live transfer tool like BoltShare is the fastest free option: no size limit, no account, and the download starts immediately because nothing is uploaded first. If the receiver will download later, use an upload service such as WeTransfer, Smash or Google Drive, which store the file but cap free sizes.
Is BoltShare free, and is there a file size limit?
BoltShare is completely free and has no file size limit. It is supported by ads rather than subscriptions, so there are no premium tiers or transfer caps. You are only limited by your connection speed and the receiver's free disk space.
Are my files stored on BoltShare's servers?
No. Files stream live from the sender's browser to the receiver's and are never saved. In Direct P2P mode the data goes device to device. In the default Bolt Tunnel mode it passes through a relay on Cloudflare's network that forwards each piece in memory and never writes it to disk.
Is BoltShare end-to-end encrypted?
In Direct P2P mode, yes: WebRTC encrypts data between the two browsers with DTLS. In the default Bolt Tunnel mode, data is encrypted with TLS between each browser and the relay. Choose Direct P2P when end-to-end encryption matters.
How do I send a large file that is too big for email?
Email attachments are usually capped around 25 MB. Open boltshare.in, drop the file in, and paste the generated link into your email. The receiver opens the link and the file downloads straight from your browser, with no size limit.
How do I send large videos from an iPhone without losing quality?
Open boltshare.in in Safari on the iPhone, pick the video from Photos, and send the link or QR code to the receiver. The original file is sent without compression. Keep the screen on until it finishes, because iOS pauses background tabs.
Does the receiver need to install anything or sign up?
No. The receiver opens the link in any modern browser and the file saves to their Downloads folder. Neither side needs an account.
What happens if the connection drops mid-transfer?
BoltShare reconnects automatically and resumes from the last byte the receiver confirmed, instead of starting over. The sender just needs to keep the BoltShare tab open.
When should I not use BoltShare?
When the receiver will not be online at the same time as you. BoltShare does not store files, so the link only works while your tab is open. For "send now, download tomorrow" deliveries, an upload service like WeTransfer or Google Drive is the better choice.