Smart Wake-Lock P2P Engine

Send Large Files While Sleeping —
Auto Wake-Lock

Never fail a massive overnight transfer again. Our smart wake-lock keeps your device, display, and Wi-Fi active until every byte arrives safely.

No Sleep Standby

Prevents OS display and Wi-Fi sleep locks

50GB+ Unlimited

Stream huge 4K archives with zero cloud caps

Max LAN Speed

Direct WebRTC stream up to 120MB/s

E2E Encrypted

100% private, files never touch servers

Direct Device-to-Device

0 Server Storage

100% P2P Encrypted

Drop Files for Instant P2P Transfer

Drag & drop any files or folders here, or click to browse. No file size limit.

End-to-End Encrypted· Zero Cloud Uploads· Unlimited Size

W3C Screen Wake Lock

Why Overnight Transfers Normally Fail

When you initiate a 50GB file upload and go to bed, your computer or mobile operating system enters energy-saving standby mode after 15–30 minutes of inactivity. The screen shuts off, wireless network adapters enter low-power sleep, and background TCP/WebRTC sockets are ruthlessly severed.

Textunnel resolves this by programmatically requesting a screen wake lock sentinel via the modern W3C Screen Wake Lock API. Your device stays awake and transfers at wire speed until the final block is written to disk, then gracefully releases the lock to allow normal sleep.

Intelligent Wake Lock · Auto-Releases on Transfer Completion

Step-by-Step Flow

3 Simple Steps to Overnight Transfer

Open Textunnel on Both Devices

Connect sender and receiver via the 6-character room PIN or instant QR scan.

Select Large Files & Enable Auto-Download

Drop 4K videos or large archives. Auto-download ensures files write straight to disk.

Plug Into Charger & Sleep Soundly

The Wake Lock sentinel keeps the data channel wide open until 100% finished.

Zero Installs · Works across macOS, Windows, Android & iOS

Comparison Matrix

Overnight Large File Transfer Methods Compared

See how Textunnel smart wake-lock stacks against cloud drives and traditional AirDrop for massive datasets.

Method / Tool	Overnight Reliability	File Size Limits	Cloud Privacy Risk	Transfer Speed	Cross-Platform
Textunnel Auto Wake-Lock	100% (Guaranteed by Wake Lock)	Unlimited (50GB+ / 1TB+)	Zero (Direct Peer-to-Peer)	40–120 MB/s (Local Wi-Fi)	Universal (Mac, Windows, iOS, Android)
WeTransfer (Free)	Poor (Upload fails on tab sleep)	2 GB Free Cap	High (Uploaded to cloud)	Broadband Upload Speed (~5 MB/s)	Web Browser
Google Drive / Dropbox	Moderate (Sync client background)	15 GB Free Quota	High (Permanent cloud storage)	Throttled by Cloud Ingestion	Requires App & Account
Apple AirDrop	Fails if screen locks or sleeps	Prone to RAM crash over 20GB	Local Peer-to-Peer	Fast (AWDL 5GHz)	Apple Devices Only

Designed for Massive Workflows

Built for filmmakers, 3D artists, and large backup migrations.

4K / 8K Video Footage

Move 100GB+ raw footage from camera laptops to editing workstations overnight with zero bandwidth throttling or cloud upload caps.

Full Device Backups

Migrate comprehensive photo libraries, virtual machine disk images, and disk clones between machines over high-speed local Wi-Fi.

Off-Hours Studio Sync

Transfer 3D render caches, machine learning datasets, and game builds while your office is closed without babysitting progress bars.

Frequently Asked Questions

Everything you need to know about overnight large file transfers.

Q1.How does Textunnel keep transfers active while I am sleeping?

Textunnel integrates the native W3C Screen Wake Lock API. As soon as a file transfer begins, your browser acquires a wake lock sentinel that signals the operating system to suppress display sleep, CPU throttling, and Wi-Fi interface power saving until the entire transfer reaches 100% completion.

Q2.Is there any file size limit for overnight transfers?

No. Because files stream directly peer-to-peer over your local network using WebRTC DataChannels, you can transfer 50GB, 200GB, or multi-terabyte 4K/8K video libraries with zero cloud quota limits and zero subscription fees.

Q3.Does leaving transfers running overnight drain laptop or phone battery?

Screen wake locks keep display backlights and CPU network threads active. For transfers exceeding 20GB, we strongly recommend keeping your laptop or smartphone connected to its wall charger overnight to prevent sudden battery shutdown.

Q4.Is my data stored on any server while I sleep?

No. Textunnel operates on a pure zero-knowledge peer-to-peer architecture. File binary chunks stream directly from device memory to device memory over local Wi-Fi. No file chunks are ever written to external cloud databases.

Q5.What happens if local Wi-Fi temporarily drops during the night?

Textunnel features built-in WebRTC chunk tracking and automatic reconnection handshakes. If a brief wireless interference occurs, the transfer pauses and resumes automatically without requiring manual restarts.

Q6.Why do overnight uploads fail on Google Drive, Dropbox, or WeTransfer?

Cloud storage providers require uploading your entire dataset over broadband internet to remote data centers. If your home IP renews overnight, broadband speed drops, or the browser tab enters sleep mode, cloud upload sessions time out and abort.

Q7.Can I transfer files between Mac and Windows PC overnight?

Yes! Textunnel runs 100% in modern web browsers (Safari, Chrome, Edge, Firefox), bridging macOS and Windows without third-party desktop utilities or proprietary vendor locks.

Q8.Does Textunnel work on mobile browsers like iPhone Safari or Android Chrome?

Yes. Both iOS Safari and Android Chrome support the Screen Wake Lock API. Keep the Textunnel browser tab in the foreground on your phone, and it will prevent mobile screen auto-lock until the transfer completes.

Q9.Can I configure files to auto-save to disk without clicking download in the morning?

Yes! In the transfer options, toggle Auto-Download. Incoming files stream and write straight into your browser default Downloads directory, ready for you when you wake up.

Q10.What transfer speeds can I expect over local Wi-Fi?

On modern Wi-Fi 6 or gigabit LAN setups, Textunnel streams peer-to-peer data at 40MB/s to 120MB/s (320Mbps to 1000Mbps), allowing a 100GB video archive to transfer in under 20 minutes.