# iFileSender

> Fast, private, peer-to-peer (P2P) cross-platform file transfer web application built with WebRTC. Send unlimited photos, 4K videos, and large documents between Mac, iPhone, Android, and Windows directly in your browser with zero app installs.

iFileSender enables instant device-to-device file transfers across any operating system through modern web browsers. Files stream directly between devices using WebRTC Data Channels (DTLS/SCTP) without uploading to third-party cloud servers or intermediaries.

- **Speed:** 50–100+ MB/s over local Wi-Fi.
- **Privacy:** End-to-end encrypted (E2EE), zero-knowledge peer-to-peer.
- **Limits:** No file size limits, no transfer quotas, 100% free with no account required.
- **Compatibility:** Apple macOS, iOS (iPhone/iPad), Android, Microsoft Windows, Linux, ChromeOS.

## Core Web Applications & Transfer Tools
- [Universal Transfer Tool](https://ifilesender.com/): Instant browser-to-browser P2P file transfer for any device pair.
- [Mac to Android Transfer](https://ifilesender.com/mac-to-android/): Fast direct file transfer between Apple Mac and Android phones or tablets.
- [Mac to Windows Transfer](https://ifilesender.com/mac-to-windows/): Wireless file sharing between Mac and Windows PC without USB drives or network drives.
- [iPhone to Android Transfer](https://ifilesender.com/iphone-to-android/): Move photos, 4K videos, and documents between iPhone and Android without cloud storage compression.
- [iPhone to Windows Transfer](https://ifilesender.com/iphone-to-windows/): Quick cable-free file transfer between iPhone and Windows PC.

## Technical Architecture & How It Works
- [How iFileSender Works](https://ifilesender.com/how-it-works/): Detailed technical documentation of WebRTC signaling, STUN/TURN NAT traversal, DTLS/SCTP encryption, and local network peer-to-peer data channels.

## Step-by-Step Guides & Tutorials
- [Transfer Guides & Blog Archive](https://ifilesender.com/blog/): Complete library of 88+ step-by-step cross-platform tutorials and speed optimization guides.
- [Why Is My Wi-Fi File Transfer So Slow?](https://ifilesender.com/blog/why-is-my-wi-fi-file-transfer-so-slow/): Comprehensive troubleshooting guide for 2.4 GHz vs 5 GHz bands, VPN interference, and router AP Isolation.
- [Why Can't Two Devices on the Same Wi-Fi See Each Other?](https://ifilesender.com/blog/why-cant-two-devices-on-the-same-wi-fi-see-each-other/): Guide to router guest mode, client isolation, subnet mismatches, and hotspot pairing.
- [Wi-Fi vs Bluetooth for File Transfer](https://ifilesender.com/blog/wi-fi-vs-bluetooth-which-is-faster-for-file-transfer/): Benchmarks and technical analysis comparing local Wi-Fi speeds to Bluetooth transfers.
- [Send Large Files Between Devices Free](https://ifilesender.com/blog/send-large-files-between-devices-free/): How to bypass 25MB email caps and 4GB FAT32 limitations using browser P2P streaming.
- [Transfer Large Files From Mac to Android](https://ifilesender.com/blog/how-to-transfer-large-files-from-mac-to-android/): Guide for moving multi-gigabyte video files without Android File Transfer crashes.
- [Transfer Photos From iPhone to Android](https://ifilesender.com/blog/how-to-transfer-photos-from-iphone-to-android/): How to transfer full-resolution images without WhatsApp compression or cloud storage limits.
- [Transfer Videos From iPhone to Windows](https://ifilesender.com/blog/how-to-transfer-videos-from-iphone-to-windows/): Fast wireless transfer of ProRes and 4K 60fps iPhone footage to Windows PC.

## Privacy, Security & Company Info
- [About iFileSender](https://ifilesender.com/about/): Project overview, mission, and technology stack.
- [Privacy Policy](https://ifilesender.com/privacy-policy/): Zero-retention privacy policy confirming files are never stored, logged, or intercepted on servers.
- [Terms and Conditions](https://ifilesender.com/terms-and-conditions/): Usage terms for the iFileSender service.
- [Contact & Support](https://ifilesender.com/contact/): Get in touch with the development and support team.