SEND LARGE FILES EASILY!
Encrypt your large file and transfer securely, do not use for sensitive files.
select file
Packing U24 Encrypted Stream...
0%
Encrypt your large file and transfer securely, do not use for sensitive files.
No human on earth can see your content as it is encrypted upon upload, only the recipient can reconstruct the file and view it. Database resets each month.
Enter your u24Bolt transfer link or claim token to rebuild and download the original file intact.
The receiver executes zero-allocation reconstruction. Your browser unpacks the encrypted stream on-the-fly.
Ensure you are aware of this download from someone familiar, otherwise do not download.
Files transferred through u24Bolt are end-to-end encrypted upon upload and reconstructed directly on your machine. Always verify the source and sender identity before opening external files.
u24Bolt is an enterprise-grade high-speed file delivery platform powered by the proprietary U24 Execution Engine.
Built for extreme efficiency, U24 delivers memory-mapped zero-copy stream processing, allowing multi-gigabyte archives to transfer smoothly across distributed cloud endpoints.
All payloads are encapsulated inside compact, encrypted .u24bak packages before leaving your device. Only authenticated recipients possessing the unique transfer token can reconstruct the original payload.
U24 is a closed-source backend framework developed by John Drossos. Commercial licensing, dedicated cluster deployments, and custom API integrations are available via official channels.
Last updated: October 2026. By accessing or using u24Bolt, you agree to these Terms.
u24Bolt is provided free of charge for personal and commercial file transfers. We do not inspect, index, or sell your transmitted data.
All uploaded packages are retained for a default duration of 30 calendar days. Following expiration, all associated packages, tokens, and metadata are permanently erased from the network.
You agree not to utilize u24Bolt for malicious software, illegal material, or unauthorized copyrighted distribution. The service provides zero-knowledge transport and assumes no liability for user-generated payloads.
The service is offered on an "AS IS" and "AS AVAILABLE" basis without warranties of any kind. Always maintain an independent local backup of your critical files.
Encountered a problem during transmission or unpacking? Our technical team is here to assist.
u24Bolt operates on independent bare-metal cloud infrastructure (Hetzner + TriaDB decentralized storage nodes) to keep large file transfers 100% free for everyone, with zero advertising and complete end-to-end privacy.
Your support directly funds high-bandwidth egress nodes and long-term storage clusters.
Set how long your uploaded files are securely retained in the decentralized TriaDB storage cluster before automatic permanent deletion.
Files will be wiped clean from TriaDB nodes after 30 days. No recovery is possible once purged.