# tfLink

> Free temporary file sharing service with 100MB file support, global CDN acceleration, QR code sharing, and API/CLI access built on Cloudflare Workers

tfLink is a professional temporary file sharing platform designed for developers, designers, and regular users. The service provides fast, secure, and privacy-focused file transfer capabilities with automatic cleanup features.

## Core Features

- [Upload Interface](https://tmpfile.link/): Drag-and-drop web interface with clipboard paste support
- [API Documentation](https://tmpfile.link/#api-documentation): RESTful API for programmatic file uploads with authentication support
- [CLI Examples](https://tmpfile.link/#command-line-upload-cli): Command-line tools for Linux/macOS/Windows with curl and PowerShell examples
- [QR Code Sharing](https://tmpfile.link/#qr-code-feature): Generate QR codes for easy mobile downloads and cross-device sharing

## Technical Specifications

- **File Size Limit**: 100MB per file
- **Storage Duration**: Anonymous uploads auto-deleted after 7 days, authenticated uploads stored longer
- **Supported Formats**: All file types (images, documents, videos, audio, archives, etc.)
- **Infrastructure**: Built on Cloudflare Workers with R2 storage and KV for authentication
- **Global CDN**: Worldwide edge acceleration via Cloudflare network
- **Download Domain**: d.tmpfile.link for optimized file delivery

## API Reference

- **Upload Endpoint**: `POST /api/upload` with multipart/form-data
- **Authentication**: Optional X-User-Id and X-Auth-Token headers for persistent storage
- **Response Format**: JSON with downloadLink, fileName, size, type, and uploadedTo information
- **File Paths**: `public/{date}/{uuid}/{filename}` for anonymous, `users/{userId}/{date}/{uuid}/{filename}` for authenticated

## Use Cases

- **Document Sharing**: Quick sharing of PDFs, presentations, and text files
- **Image Transfer**: Photo sharing between devices with QR code support
- **Temporary Backup**: Short-term storage for files during transfers
- **Developer Tools**: CLI integration for build processes and automation scripts
- **Cross-Device Transfer**: QR code feature for instant mobile access

## Optional

- [Chinese Interface](https://tmpfile.link/index-zh.html): Full Chinese language support with localized content
- [Blog](https://tmpfile.link/blog/): Technical guides, case studies, and tutorials for advanced usage
- [MCP Integration](https://tmpfile.link/temp-file-share-mcp): Model Context Protocol integration guide for AI assistants like Claude Desktop and Cherry Studio

## Recent Blog Articles (September 2025)

### Core Feature Guides (New)
- [Free Temporary File Upload: Easiest Way to Share Files Without Signup](https://tmpfile.link/blog/free-temporary-file-upload-no-signup): Complete guide to 100MB free temporary uploads with global CDN, QR sharing, and API/CLI support for quick collaborations
- [One-Time File Upload Links: Secure Sharing that Auto-Expires](https://tmpfile.link/blog/one-time-file-upload-links-secure-sharing): Implementation guide for secure one-time file sharing with automatic expiration, security best practices, and compliance considerations
- [Temporary File Upload vs Permanent Cloud Storage: Which Should You Choose?](https://tmpfile.link/blog/temporary-file-upload-vs-permanent-cloud-storage): Comprehensive comparison covering cost, security, compliance, and hybrid approaches for optimal file management strategy

### Technical Guides
- [How to Generate Temporary Download Links and Upload Files with Direct Links](https://tmpfile.link/blog/mastering-temporary-file-upload-download-links): Complete guide to using tfLink for creating temporary download links, upload files with temporary links, and direct file sharing

### Success Stories
- [How IT Service Provider Boosted Efficiency 300% with Temporary File Sharing](https://tmpfile.link/blog/it-service-provider-efficiency-case-study): Case study showing how IT teams streamlined server maintenance workflows
- [Creative Designer Cuts Client Review Time by 80% with Instant File Sharing](https://tmpfile.link/blog/creative-designer-workflow-transformation): Success story of improving client collaboration workflows
- [How to Create Temporary Download Links: Complete Guide](https://tmpfile.link/blog/temporary-download-link-guide): Best practices for generating secure temporary download links
- [Upload Files and Generate Temporary Links - Best Practices](https://tmpfile.link/blog/upload-file-temporary-link-best-practices): Comprehensive guide on API usage and CLI tools
- [Temporary File Upload Direct Links: Security & Implementation](https://tmpfile.link/blog/temporary-file-upload-direct-link-security): Deep dive into secure temporary file upload systems
- [Tmp File Upload vs Traditional File Hosting: When to Choose What](https://tmpfile.link/blog/tmp-file-upload-vs-traditional-hosting): Comparison guide for different hosting approaches
- [Building Temporary File Hosting Service: Technical Architecture](https://tmpfile.link/blog/temporary-file-hosting-service-architecture): Technical architecture and implementation details
- [tfLink API Integration Guide for Temporary File Uploads](https://tmpfile.link/blog/api-temporary-upload-guide): Complete API integration guide with code examples
- [API Integration Guide for Temporary File Uploads](https://tmpfile.link/blog/api-temp-backup): Comprehensive developer guide for API integration
- [FAQ Section](https://tmpfile.link/#frequently-asked-questions-faq): Common questions about file types, limits, and features