# Put Room > Put Room is a zero-login, ephemeral real-time collaboration workspace for transferring files, text, images, and source code across any device using 4-digit codes. ## Overview Put Room (https://putroom.com) allows users to create disposable, encrypted, real-time shared rooms without email, passwords, phone numbers, or account signups. Each room is assigned an instant 4-digit numeric code and QR code for rapid cross-device discovery. ## Key Capabilities - **Zero-Login & Instant**: No registration, personal data, or cookies required to create or join rooms. - **Cross-Platform Transfer**: Works across iOS, Android, macOS, Windows, Linux via any modern web browser. - **Multi-Type Support**: Real-time clipboard text sync, syntax-highlighted code sharing, image galleries, and multi-gigabyte file transfers. - **Hybrid Transfer Engine**: Peer-to-peer WebRTC data channels for instant local/remote transfers, backed by high-speed Cloudflare R2 storage for asynchronous downloads. - **Auto-Expiration & Privacy**: Free rooms last 30 minutes and auto-purge with zero data persistence. Paid tiers support extended lifetimes up to 72 hours. ## Specifications & Storage Tiers - **Free Tier**: $0 / month — 2 GB total room storage, 30-minute room duration, 500 MB per-file upload limit. - **Student Tier**: $1.49 / month — 10 GB total room storage, 6-hour room duration, 2 GB per-file upload limit. - **Pro Tier**: $4.99 / month — 50 GB total room storage, 24-hour room duration, 10 GB per-file upload limit. - **Plus Tier**: $7.99 / month — 100 GB total room storage, 72-hour room duration, 25 GB per-file upload limit. ## Architecture & Security - **Data Protection**: WebRTC DTLS/SRTP encryption in transit, AES-256 server-side encryption on Cloudflare R2. - **Server Authoritative**: Room lifetime, quotas, and expiration are enforced by Cloudflare Durable Objects. - **Zero Persistence**: Upon room expiration or manual deletion, files and messages are irreversibly purged. ## Primary Documentation & Features - [Home & Room Creator](https://putroom.com/): Instant room creation and 4-digit code joining. - [Online Clipboard](https://putroom.com/online-clipboard): Instant cross-device copy-paste utility. - [Large File Sharing](https://putroom.com/large-file-sharing): Zero-signup transfer of files up to 10GB+. - [PC to Phone File Transfer](https://putroom.com/pc-to-phone-file-transfer): Quick transfers between desktop computers and mobile phones. - [Phone to PC File Transfer](https://putroom.com/phone-to-pc-file-transfer): Mobile camera photos and files sent to PC via QR code. - [Share Code Online](https://putroom.com/share-code-online): Collaborative snippet sharing with language detection. - [Temporary File Sharing](https://putroom.com/temporary-file-sharing): Auto-expiring file uploads without user tracking. - [QR Code File Transfer](https://putroom.com/qr-code-file-transfer): Camera scan to join instant rooms without typing URLs. - [Pricing](https://putroom.com/pricing): Storage tiers and extended duration options. - [Zero-Login Privacy](https://putroom.com/zero-login-privacy): Technical architecture of our zero-knowledge ephemeral storage. - [Security Architecture](https://putroom.com/security): Encryption standards, Cloudflare infrastructure, and lifecycle policies. - [Full LLM Reference](https://putroom.com/llms-full.txt): Complete exhaustive platform reference for AI models.