Migrate TeraBox to OneDrive, Google Drive, Dropbox & S3

What is TeraBox?

TeraBox is a consumer cloud-storage service operated by Flextech Inc., the international spin-off of Baidu Netdisk launched in 2020. It markets a headline 1 TB free tier — one of the largest free quotas in the consumer cloud market — and as of 2026 reports more than 700 million registered users, concentrated heavily in South and Southeast Asia. The free tier comes with two structural caveats most users learn the hard way: a single-file upload ceiling of 4 GB, and a per-account hard limit of around 20 large files, which makes the practical usable storage closer to 80 GB than the advertised 1 TB. Premium plans start at $2.99/month for 2 TB and a 20 GB single-file limit. Free downloads are throttled to roughly 200–800 KB/s with one concurrent file at a time; Premium lifts that to 15–20 MB/s and five concurrent files.

TeraBox publishes no official export tool, no rclone/WebDAV endpoint, and no public OAuth API. The only path out for self-hosted migrations is the browser session cookie — which is exactly how CloudsLinker connects. Once a TeraBox session is registered, transfers run on our servers in the cloud-to-cloud path, so the 200–800 KB/s download cap that throttles your home internet stops mattering: TeraBox throttles per session, not per data center. Cookies expire on logout, password change, or long inactivity, so we surface re-auth prompts instead of failing silently. For users sitting on a TeraBox library they cannot easily move, this is the difference between waiting weeks at residential speeds and finishing a 200 GB migration overnight.

Key features of TeraBox

1 TB advertised, ~80 GB usable on free

The free plan lists 1024 GB in the dashboard but caps you at roughly 20 large files of 4 GB each. Real usable capacity for media archives is closer to 80 GB — a fact buried in the third-party reviews, not the marketing page.

Premium $2.99/mo for 2 TB and 20 GB files

Premium at $2.99/mo (annual auto-renew) raises storage to 2 TB and the per-file ceiling to 20 GB. Premium+ is $3.33/mo. Premium also unlocks five concurrent downloads and 15–20 MB/s speeds.

Cookie session, not OAuth

TeraBox has no public OAuth or developer API. Third-party tools authenticate using the same browser cookie your logged-in tab uses (typically <code>ndus</code> and <code>ndut_fmt</code>). Cookies invalidate on logout, password change, or extended inactivity.

One concurrent download on free

Free accounts can pull one file at a time; Premium pulls five. This is the dominant factor in why free-tier migrations feel slow — even more than raw bandwidth.

International (terabox.com) ≠ Chinese (dubox.com)

TeraBox international and Baidu Netdisk are separate ecosystems with separate accounts. The cookie from <code>www.terabox.com</code> only authenticates the international service. Chinese-mainland Baidu Netdisk requires a different connection altogether.

No public API rate-limit docs

TeraBox does not publish API rate limits or throttling thresholds. Failed requests typically surface as HTTP 429 or business-code errors; CloudsLinker handles these with exponential backoff so jobs survive transient throttling instead of failing the whole batch.

Why connect TeraBox to CloudsLinker

CloudsLinker connects to TeraBox using a browser login cookie (extracted via the EditThisCookie extension or pasted from DevTools — no password, no app install). The cookie is stored encrypted at rest with AES-256, decrypted only inside the active worker, and never exposed to other tenants. From there, transfers run server-to-server with chunked uploads sized for each destination's API: OneDrive, Google Drive, Dropbox, Wasabi, Cloudflare R2, Backblaze B2, S3, Proton Drive, Filen, pCloud, and 140+ other supported destinations. Path structure is preserved; folder-level filters and size filters keep oversized files out of clouds with smaller per-object limits.

What you can do with TeraBox on CloudsLinker

Cloud-side bypass of the 200–800 KB/s free throttle

TeraBox throttles per browser session. Because CloudsLinker reads from TeraBox in our infrastructure and writes directly to OneDrive, Google Drive, or S3, the home-network throttle never applies. A 100 GB library that would take days at 800 KB/s typically completes in hours.

Runs without the TeraBox desktop client

The TeraBox client has been criticized for high CPU and bundled extras. CloudsLinker never installs anything locally — your machine stays asleep while we copy from TeraBox to Dropbox, Wasabi, or B2.

Scheduled syncs with cookie-expiry alerts

Run hourly, daily, or weekly incrementals from TeraBox to a permanent cloud. When your TeraBox cookie expires (logout, password change, long inactivity), the job pauses and emails you to re-paste a fresh cookie instead of failing the schedule.

File-size and path filters for the 4 GB ceiling

Filter by extension, size, or folder path so the 4 GB single-file limit on the free tier is enforced before transfer. Useful when migrating in the opposite direction (S3 → TeraBox) to skip oversized objects.

Common TeraBox transfer scenarios

TeraBox → OneDrive for Microsoft 365 work files

Users who started on TeraBox for the 1 TB headline often outgrow the 4 GB single-file cap once they need to store CAD files, raw video, or full disk images. Migrate the library to Microsoft 365 Personal (1 TB OneDrive at $6.99/mo) or Family (6 × 1 TB at $9.99/mo) and consolidate work files in the same tenant as Word, Excel, and Teams.

TeraBox → Google Drive + Google Photos for the photo library

TeraBox's free quota looks generous on paper, but the 20-file × 4 GB ceiling makes it a poor fit for photo and 4K video archives. Move the photo library to Google Photos (counted against Google One storage) so it indexes in the standard Google ecosystem alongside Gmail, Calendar, and Docs. Folder hierarchy is preserved during the copy.

TeraBox → Wasabi or Cloudflare R2 for cold archive

If TeraBox is your single copy of family video or scanned documents, the throttle and cookie-expiry model are not a long-term archive strategy. Mirror the contents into Wasabi ($6.99/TB/month, no egress fees) or Cloudflare R2 ($15/TB/month with zero egress) and treat TeraBox as the warm tier and the object store as the durable tier.

TeraBox → Dropbox for small-team collaboration

TeraBox has no real teams or sharing controls beyond per-link sharing. Migrate working files to Dropbox (2 TB Plus at $11.99/mo, or 5 TB Standard team at $15/user/mo) where shared folders, comments, and version history are first-class features. CloudsLinker preserves folder structure during the copy.

TeraBox → Proton Drive or Filen for E2E-encrypted off-ramp

Users uncomfortable with TeraBox's data-handling reputation often want their files moved to a zero-knowledge European cloud. Proton Drive (Switzerland, 200 GB at €4.99/mo) and Filen (Germany, 100 GB free, 1 TB at €4/mo) both encrypt client-side. CloudsLinker bridges the cookie-based TeraBox session to the credential-based Proton/Filen accounts in a single job.

How to connect TeraBox to CloudsLinker

TeraBox does not publish a public OAuth or developer API, so CloudsLinker authenticates with the same browser session cookie your logged-in TeraBox tab uses. You will not be asked for your TeraBox password.

Before you start

Sign in at www.terabox.com — the international service. The Chinese-mainland Baidu Netdisk (pan.baidu.com / dubox.com) is a separate account system and a separate connection.
Disable any cookie-isolation extensions (e.g. Multi-Account Containers) on the TeraBox tab while extracting, otherwise the export will be incomplete.

Connection steps — Method 1 (recommended): EditThisCookie (V3) extension

Install the EditThisCookie (V3) extension from the Chrome Web Store.
Open www.terabox.com in the same browser and confirm you are logged in.
Click the EditThisCookie icon in the toolbar → click Export. The full cookie set is copied to your clipboard as JSON.
In CloudsLinker, click Add Cloud → choose TeraBox → enter a display name (e.g. “TeraBox — family videos”) → paste the JSON into the cookie field → click Confirm.
CloudsLinker validates the cookie by listing your TeraBox root and shows the connection ready.

Connection steps — Method 2: DevTools (no extension)

Open www.terabox.com and log in.
Press F12 to open DevTools → switch to the Network tab → tick Preserve log.
Refresh the page, click any request in the list, and find Request Headers → Cookie.
Copy the entire cookie string (typically includes ndus=…; ndut_fmt=…; csrfToken=…).
In CloudsLinker, click Add Cloud → TeraBox → paste the raw cookie string → Confirm.

Security notes

The cookie is account-equivalent for API access; treat it like a password. Do not share or screenshot.
Cookies invalidate on logout, password change, or extended inactivity. CloudsLinker will email you to re-paste when this happens.
The cookie is stored encrypted at rest with AES-256 and decrypted only inside the active transfer worker.

Revoke access

Log out of www.terabox.com in the source browser, or change your TeraBox password — either action invalidates the cookie on TeraBox’s side immediately. To also remove our stored encrypted copy, delete the TeraBox connection from inside CloudsLinker.

TeraBox upload & download limits you should know

The numbers below are the ones most likely to surprise users mid-migration. Plan around them before scheduling a large job.

Maximum single file size: 4 GB on Free, 20 GB on Premium and Premium+.
Free-tier “1 TB” caveat: dashboard shows 1024 GB but the practical limit is roughly 20 large files of 4 GB each — about 80 GB usable. Documented in third-party reviews; not in TeraBox marketing.
Storage tiers: 1 TB Free / 2 TB Premium at $2.99/month (annual auto-renew) / Premium+ at $3.33/month.
Download throttle (Free): approximately 200–800 KB/s, with one concurrent download at a time. Cloudwards’ 2026 review pegs the typical free range at 1.5–6.25 MB/s; third-party sources report sustained free speeds as low as 100–500 KB/s.
Download speed (Premium): 15–20 MB/s, with up to five concurrent downloads.
API rate limits: not publicly documented. Failed requests surface as HTTP 429 or TeraBox business-code errors; CloudsLinker handles these with exponential backoff.
Version history: no published version-history retention.
Trash retention: TeraBox does not publicly document a fixed Recycle Bin retention window; do not rely on it as your only undelete path.
Service split: terabox.com (international) and dubox.com / Baidu Netdisk (China) are separate accounts and not interchangeable.

Sources: TeraBox cloud storage pricing plans, What is the largest file size you can upload to TeraBox?, Does TeraBox have a download limit?, TeraBox Review in 2026 (Cloudwards).

TeraBox + CloudsLinker — Frequently Asked Questions

Why does TeraBox say 1 TB free but I can only store about 80 GB?

The free tier caps you at roughly 20 large files of 4 GB each — independent of the 1024 GB dashboard number. So the realistic media-archive ceiling is closer to 80 GB. Premium ($2.99/mo) raises both the file count and the per-file size limit to 20 GB, which is when the 2 TB headline number becomes truly usable.

Can CloudsLinker bypass TeraBox's 200–800 KB/s download throttle?

TeraBox throttles per browser session, not per IP block. Because CloudsLinker pulls in our data center and writes directly to your destination cloud, your home network never sees the data and is never the bottleneck. In practice, free-tier migrations finish in hours instead of days, though TeraBox can still rate-limit a single session if it hits abusive thresholds.

Does CloudsLinker need my TeraBox password?

No — and we recommend you never enter it anywhere. We authenticate with a browser session cookie (typically ndus and ndut_fmt) which you export from your already-logged-in browser via the EditThisCookie extension or DevTools. The cookie is account-equivalent for API calls but not for password resets, billing, or 2FA changes.

How long does my TeraBox cookie stay valid in CloudsLinker?

Cookies invalidate when you (1) log out of TeraBox, (2) change your password, or (3) leave the account dormant long enough that TeraBox auto-rotates the session. When this happens, scheduled jobs pause and we email you to paste a fresh cookie. There is no fixed TTL TeraBox publishes, but most users see weeks-to-months of session life before re-auth is needed.

Will my TeraBox Premium 20 GB single-file ceiling cause issues moving to other clouds?

No. 20 GB is well under every major destination's per-object limit: OneDrive (250 GB), Google Drive (5 TB for paid users), Dropbox (2 TB), and S3-class (5 TB). The reverse direction matters more — when migrating from S3 or OneDrive into TeraBox Premium, files larger than 20 GB will be skipped and listed in the job log.

Can I transfer from TeraBox to Google Drive without downloading first?

Yes — that is the entire point of CloudsLinker's cloud-to-cloud architecture. The TeraBox session cookie authenticates a streaming pull on our servers, which writes chunks directly to Google Drive's resumable-upload endpoint. Your browser, your local disk, and your home bandwidth never touch the data.

Is TeraBox safe? Does it scan my files?

TeraBox is operated by Flextech Inc., a 2020 spin-off of Baidu Netdisk. Its terms allow content review for compliance, and the international (terabox.com) and Chinese (dubox.com / Baidu Netdisk) services are operationally separate. If you treat TeraBox as a free incremental backup rather than your only copy of sensitive data, the practical risk is low. If your data must remain private, migrate to Proton Drive or Filen via CloudsLinker — both are zero-knowledge.

What happens to my TeraBox shared links after I migrate?

Files copied to a destination cloud get new URLs in that cloud's namespace; the original terabox.com/s/... share links keep working independently as long as the source files remain in TeraBox. If you delete the TeraBox originals after migrating, the share links break — distribute the destination links first.

Can I run scheduled TeraBox → S3 backups?

Yes. Set the cadence to hourly, daily, or weekly, and CloudsLinker performs an incremental scan: only files that changed since the last successful run are copied to Amazon S3, Wasabi, Cloudflare R2, or Backblaze B2. If your TeraBox cookie expires between runs, the job pauses and re-auth prompts arrive by email — no half-completed transfers.

How do I revoke CloudsLinker's access to TeraBox?

Log out of www.terabox.com in the browser session whose cookie you exported, or change your TeraBox password. Both invalidate the cookie immediately on the TeraBox side; CloudsLinker's stored copy stops working at the same moment. You can also delete the TeraBox connection inside CloudsLinker to remove our encrypted copy of the cookie.

TeraBox transfer guides

Step-by-step walkthroughs for moving data to and from TeraBox.

Google Drive to TeraBox: Trading 15 GB Free for 1 TB on a Realistic Migration

Move files from Google Drive (15 GB free) to TeraBox (1 TB free, 4 GB file cap). Three honest methods, the limits that actually bite, and a …

OneDrive to TeraBox: Moving Microsoft Files Into a 1 TB Consumer Archive

Move files from OneDrive to TeraBox with browser upload, desktop sync, or CloudsLinker. Covers 4 GB free file caps, folders, and OAuth.

Conclusion

TeraBox markets 1 TB of free storage, but the 4 GB per-file ceiling, the 20-file practical limit, and the 200–800 KB/s throttle make it a poor permanent home for any serious archive. CloudsLinker connects via a browser cookie and runs the export server-to-server, so you can move the entire TeraBox library to OneDrive, Google Drive, Wasabi, or any of 140+ supported destinations without waiting through the throttle. Connect TeraBox in CloudsLinker and finish the migration this week, not next month.

Start Your Free TeraBox Transfer