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关于文件穿梭机

极速、安全、自动销毁的文件传递服务

我们的服务

文件穿梭机是一个简单而强大的文件传递平台。您只需上传文件，系统会生成一个唯一的四位取件码。将取件码分享给接收者，对方即可下载您的文件。

无需注册、无需登录，随时随地传递您的文件。基于 Serverless 架构，快速稳定。

极速传输

基于全球 CDN 加速，无论您在哪里，都能享受极速的文件上传和下载体验。

安全可靠

采用业界领先的加密技术，确保您的文件在传输和存储过程中的安全性。

隐私保护

文件下载后可自动销毁，不留痕迹。我们不收集任何个人信息，真正做到用完即焚。

限时存储

文件默认24小时有效期，超时自动删除，确保文件不会永久留存。

使用场景

  • ✓临时分享大文件给朋友或同事
  • ✓跨设备传递文件，无需数据线
  • ✓向他人发送私密文档
  • ✓不想留下云盘记录的场景

与君初相识，犹如故人归

文件穿梭机是一个免费服务，由站长个人维护。如果您觉得这个服务对您有帮助，欢迎分享给朋友：

如有问题或建议，欢迎联系站长

邮箱: [email protected]

Who is File Shuttle for?

  • Professionals who need to send large files to colleagues but hit email attachment limits
  • Anyone sharing files with non-technical family members who don't want to install apps
  • Users transferring files across devices — phone to PC, Mac to Windows
  • People sharing sensitive files who don't want them lingering in the cloud

When should I use File Shuttle?

  • You have a 50MB PDF or design file to send a client, but email says it's too large
  • You're sending a video to family, but WeChat crushes the quality
  • You finished work on the office PC and need the file on your home computer
  • You're sending an installer to a friend, but QQ blocks the transfer
  • You need to share a contract temporarily — you don't want it permanently visible in a cloud drive

How to send a file

  1. Open file.shuttlelab.org and click the 'Send' button
  2. Click the upload area to select a file — upload starts automatically
  3. When upload finishes, the page shows a 4-character pickup code
  4. Copy the code or click 'Copy: URL + Code' to share with the recipient

How to receive a file

  1. Open file.shuttlelab.org and click the 'Receive' button
  2. Enter the 4-character pickup code from the sender
  3. Click 'Download' — the file downloads directly to your device

File Shuttle vs alternatives

ToolFile Size LimitRetentionAccount RequiredCross-PlatformAuto-DestructFree
File Shuttle~5 GB24 hoursNo✓✓✓
WeTransfer2 GB (free tier)7 daysNo✓NoPartial
Firefox SendDiscontinued—————
Google Drive15 GB (free)PermanentYes✓No15 GB free
WeChat / QQ100 MB–1 GBPermanentYesPartialNo✓
AirDropNo limitInstantNoApple onlyNo✓

Frequently Asked Questions

What is the maximum file size?
The practical limit is about 5 GB — this is Cloudflare R2's single-PUT request size cap, and File Shuttle currently uploads via a single PUT (multipart upload would be needed to reach R2's 5 TB object ceiling). In daily use, files from hundreds of megabytes up to a few gigabytes transfer fine. Speed depends on your network bandwidth and latency to Cloudflare's edge.
How long are files stored?
File metadata (code-to-key mapping) is stored in KV with a 24-hour TTL and expires automatically. After expiry, the pickup code stops working and the file becomes inaccessible. The R2 object itself isn't auto-deleted, but without a valid code pointing to it, it's effectively unreachable.
Can someone guess my pickup code and access my file?
The code uses 4 characters from a 32-character set (A-H, J-N, P-Z, 2-9 — excluding confusable I, 1, O, 0), giving 32⁴ = 1,048,576 possible combinations. The system checks for collisions in KV with up to 5 retries. There is no rate-limiting or brute-force protection, so theoretical enumeration is possible — but the 24-hour TTL and one-time-use nature keep practical risk low.
Is it end-to-end encrypted?
No. Files are stored in plaintext on Cloudflare R2. Transport is encrypted via HTTPS (TLS), but the server can access file contents. For highly sensitive files, encrypt them first with 7-Zip or VeraCrypt before uploading.
Is it free? Are there usage limits?
Completely free, no account required. There are no daily upload limits or file count restrictions. This is a free service maintained by ShuttleLab.
How many times can a pickup code be used to download?
There is no download count limit. Anyone with the code can download multiple times within the 24-hour window before expiry. Once the code expires, it stops working.
Can I delete a file manually before it expires?
Manual deletion is not currently supported. Files expire automatically after 24 hours. If you need to destroy a file immediately, contact [email protected] for manual removal.
What affects upload and download speed?
Speed depends primarily on your network bandwidth and latency to Cloudflare's edge nodes. Files upload directly to Cloudflare R2, and downloads use presigned URLs that connect straight to R2 — no relay through our servers. Cloudflare's global CDN typically delivers fast downloads.
Are there file type restrictions?
No file type restrictions. Any file type can be uploaded and downloaded — PDFs, videos, installers, archives, images, and more. The system sets the Content-Type based on the MIME type of your uploaded file.
Where are the servers? Which country stores my data?
Files are stored in Cloudflare R2, Cloudflare's object storage service. Data is distributed across their global edge network. Cloudflare stores and retrieves data from the nearest edge node by default — not tied to a specific country. Exact data residency depends on Cloudflare's global infrastructure.