CTfile (城通网盘, ctfile.com), also referred to as CTDISK, is a cloud storage service operated by Shanghai Dihui Information Technology Co., Ltd., located in the Lujiazui free trade zone in Shanghai. The company behind CTfile has been providing enterprise-level cloud storage to businesses in the United States since 2001, and entered the Chinese market with the CTfile platform in April 2009. As of 2026, the service has accumulated tens of millions of users and stores over 100 PB of data.
CTfile offers 5 TB of free renewal storage to all registered users, with paid plans scaling up to 70 TB. Unlike most Chinese cloud storage services, CTfile supports WebDAV access for batch file management. It also runs a revenue-sharing program that pays uploaders per valid download click on their shared files, with withdrawals available via Alipay or PayPal.
Free user files are automatically renewed as long as they receive download activity. Files with no downloads for six consecutive months may be cleared, but upgrading to a paid plan extends retention indefinitely.
CTfile registration and stable access typically requires a Chinese phone number and a Chinese IP address for consistent connections. Users outside China can use BAIDUDL to download files from CTfile share links without needing a CTfile account.
城通网盘
| Developer | Shanghai Dihui Information Technology Co., Ltd. |
| Platform | Web, Windows, macOS, Linux, Android, iOS |
| Launched | April 2009 |
| Registration | Required (Chinese Phone Number) |
| Website | ctfile.com |
| Feature | Free | Standard Member | Super Member |
|---|---|---|---|
| Storage | 5 TB renewal space | 5 TB shared space | 10 TB shared + 2 TB private |
| Max Single File | 20 GB | 20 GB | 30 GB |
| Download Speed | Slow | High-speed | Super accelerated |
| Multi-file Download | No | Yes | Yes |
| WebDAV Batch Download | No | Yes | Yes |
| Monthly Direct Traffic | No | No | 100 GB |
| File Retention | Auto-renew on access | Long-term | Long-term |
Note: Free user storage is described as "renewal space," meaning files persist as long as they continue receiving download activity. Maximum storage for Super Member plans can reach up to 70 TB with additional expansion. Pricing is subject to change.
CTfile operates a revenue-sharing program that pays file uploaders when other users download their shared files. This model has made CTfile popular among forum moderators, content creators, and users who share files widely across Chinese web communities. CTfile positions its program as having higher payout rates and no click deduction compared to similar platforms.
| Detail | Value |
|---|---|
| Max reward per valid click | 0.4 CNY |
| Minimum withdrawal | 10 CNY |
| Withdrawal methods | Alipay, PayPal |
| Click deduction | None |
A valid click is defined as a user who accesses a shared file link and clicks the standard download button. Revenue tiers are updated based on download volume, with higher-traffic uploaders earning at higher per-click rates. Earnings from different files accumulate in the same account balance, and the same downloader can generate valid clicks on multiple different files from the same uploader.
PayPal support for withdrawals is notable compared to most Chinese cloud storage platforms, which typically only support Chinese payment processors. This makes CTfile's earning program accessible to uploaders who do not hold a Chinese bank account or Alipay balance.
CTfile supports WebDAV protocol for Standard and Super Members, enabling batch file management through compatible desktop clients and operating system file managers. WebDAV allows users to mount CTfile storage as a network drive and manage files directly without using the web interface, which is particularly useful for bulk transfers and automation workflows.
Audio and video files can be played directly from cloud storage without downloading. CTfile's online player supports common video and audio formats for in-browser playback, making it convenient for users who share media files and want recipients to preview content before downloading.
CTfile states it has maintained unlimited upload speeds since its founding, with transfer rate determined solely by the user's own network connection rather than server-side throttling. This applies to all users regardless of plan tier.
CTfile uses its TechSense Technology for layered encryption of stored data and Dynamic Encryption Technology for triple encryption of user credentials. The service operates across multiple data centers covering China Telecom, Unicom, and Mobile networks for continuous high-speed access. The Windows client runs on version 5.1.7 and supports Windows 10 and later on 64-bit systems, with a legacy 32-bit build available for Windows 7.
The company behind CTfile began providing enterprise-level cloud storage services to small and medium businesses in the United States in 2001 under Ledo Inc. This background in enterprise storage informed the technical foundation that CTfile brought to the Chinese consumer market.
CTfile officially launched in China on April 1, 2009, jointly funded by Chengtong Technology and China Long Distance Telecom, with the company establishing its operational base in the Lujiazui free trade zone in Shanghai. The service went through five major version updates in its first two years, reaching Version 5 in June 2011.
CTfile has operated continuously since 2009, accumulating tens of millions of users and over 100 PB of stored data across 16 years of service. The platform has updated its storage tiers significantly over time, most recently offering 5 TB free storage and up to 70 TB for paid plans, a substantial increase from the service's earlier storage limits.
BAIDUDL supports downloading files from CTfile. If you have a CTfile share link, you can use our service to download the files directly, no Chinese phone number, account, or VPN required.
Simply choose a plan that fits your file size, enter your CTfile link, decryption key, and email into the form, choose a payment method, and pay. We will process the files on your behalf and deliver them to your email with a secure, high-speed download link. Our how-to guide walks through the full process step by step.
城通网盘
| Developer | Shanghai Dihui Information Technology Co., Ltd. |
| Platform | Web, Windows, macOS, Linux, Android, iOS |
| Launched | April 2009 |
| Registration | Required (Chinese Phone Number) |
| Website | ctfile.com |