AWS S3 to TeraBox: Pull Bucket Files Into a Browsable 1 TB Free Tier

Move AWS S3 objects to TeraBox's 1 TB free tier for easy browsing and sharing of smaller files. S3 client download or cloud-to-cloud transfer with CloudsLinker.

Introduction

TeraBox gives a personal account 1 TB of free storage with a friendly app and shareable links — a different shape from AWS S3, which is programmatic object storage billed per gigabyte plus egress and request fees. Pulling files out of an S3 bucket into TeraBox makes sense when you have media or documents that you would rather browse and share through a consumer app than address through the S3 API or pay egress to retrieve repeatedly. There is one hard limit to plan around: TeraBox caps a single free file at 4 GB, so large database dumps, disk images, or video masters that often live in S3 will not fit a free account. AWS S3 connects with an access key, secret key, and region; TeraBox connects by browser cookie. This guide covers an S3 client download and a cloud-to-cloud transfer with CloudsLinker.

Method 1: S3 Client Download (Cyberduck / rclone), Upload to TeraBox
Method 2: Cloud-to-Cloud Transfer with CloudsLinker
AWS S3 vs TeraBox
Method Comparison
Practical Tips
FAQ

About AWS S3

Amazon S3 is AWS object storage addressed through the S3 API. It is built for applications and infrastructure, billed per GB stored plus egress and request charges.

Model: buckets and object keys, no real folders.
Billing: per GB + egress + requests.
Per-object size: up to 5 TB.
Access: Access Key ID + Secret Access Key + Region.
Interface: API, CLI, S3-compatible clients.

About TeraBox

TeraBox is a consumer file locker from Flextech Inc. with a 1 TB advertised free tier and a friendly browsing and sharing app — suited to smaller files, not large archives.

Free quota: 1 TB advertised; ~80 GB practical (20-file cap).
Per-file cap: 4 GB free / 20 GB Premium.
Model: plain folder tree with a consumer app.
Cost: free tier; no egress fees.
Access: browser cookie (ndus, ndut_fmt); no OAuth.

Comparison: AWS S3 vs TeraBox

S3 is infrastructure-grade object storage for programs; TeraBox is a consumer app for people. Moving between them only makes sense for files a person wants to browse — and only those under the free per-file cap.

Feature	AWS S3	TeraBox
Primary use	Application/infrastructure storage	Personal browsing and sharing
Billing	Per GB + egress + requests	Free tier; no egress
Per-file size	Up to 5 TB	4 GB free / 20 GB Premium
Interface	API, CLI, S3 clients	Consumer app and web
Third-party access	Access Key + Secret + Region	Browser cookie only

Preparing to Move AWS S3 to TeraBox

On the AWS side

Inventory object sizes: anything over 4 GB will not fit a free TeraBox account. S3 buckets often hold large archives — filter for the smaller, browsable files.
Create an access key: IAM → Users → Security Credentials → Create Access Key. Note the region of the bucket.
Budget for egress: pulling data out of S3 incurs egress charges. Estimate the cost before a large move.

On the TeraBox side

Create a TeraBox account at terabox.com.
Create a target folder such as /S3-Import/.
Decide on a tier: free if all objects are under 4 GB, Premium otherwise.

Method 1: S3 Client Download (Cyberduck / rclone), Upload to TeraBox

Step 1: Download Objects from S3

Configure an S3 client with your Access Key ID, Secret Access Key, and region. With Cyberduck you browse the bucket and drag objects out; with rclone you run rclone copy s3:bucket/path ./local. Pull the files you want into a local folder.

Download objects from an AWS S3 bucket with an S3 client

Step 2: Filter Oversized Files and Upload to TeraBox

Set aside any object over 4 GB if you are on a free account. Open terabox.com, open your /S3-Import/ folder, and drag the rest in.

Method 2: Cloud-to-Cloud Transfer with CloudsLinker

Move Objects Server-Side, Without Repeated Local Egress

CloudsLinker connects AWS S3 with your access key and TeraBox by session cookie, transferring objects between them server-side. Egress is still billed by AWS, but it flows once to CloudsLinker rather than down to your machine and back up.

Step 1: Connect AWS S3

In CloudsLinker, click Add Cloud → AWS S3. Enter a display name, your Access Key ID, Secret Access Key, and the bucket Region. Confirm to connect.

Connect AWS S3 to CloudsLinker with access key, secret key and region

Step 2: Connect TeraBox (Browser Cookie)

TeraBox has no OAuth, so use the session cookie:

Install EditThisCookie (V3) in Chrome.
Open www.terabox.com in the same browser, signed in.
Click EditThisCookie → Export and paste the cookie JSON into CloudsLinker.

Or copy the Cookie header (ndus=...; ndut_fmt=...) from DevTools (F12) → Network.

Connect TeraBox to CloudsLinker with the browser session cookie

Step 3: Configure the Transfer

In the Transfer section, set AWS S3 as the source, browse to the bucket and prefix, and set TeraBox as the destination with your /S3-Import/ folder. Apply a 4 GB size filter for free TeraBox and use type filters to pull only browsable files. Copy keeps the bucket intact.

Configure AWS S3 to TeraBox transfer in CloudsLinker

Step 4: Start and Monitor

Start the task and track it in the Task List. If the TeraBox cookie expires, the task pauses for a fresh one. Verify in TeraBox; the S3 objects stay in place under Copy mode.

Method Comparison

Method	Ease of Use	Speed	Best For	Uses Local Bandwidth	Skill Level
S3 Client + Upload	★★★☆☆	★★☆☆☆	A few objects, ad hoc pulls	Yes (egress + upload)	Intermediate
CloudsLinker	★★★★★	★★★★☆	Larger sets of suitably sized files	No	Beginner

Practical Tips for AWS S3 to TeraBox

The 4 GB cap decides fit: TeraBox suits buckets of photos, documents, and small media. Large backups, VM images, and video masters do not belong on a free TeraBox tier.
Estimate egress cost first: AWS bills egress on every byte leaving S3. A large move has a real dollar cost — check it before starting.
Use a scoped IAM key: create a read-only access key limited to the bucket you are moving, and delete it afterward.
Object keys become folders: S3 key prefixes like photos/2024/ map to nested folders in TeraBox.
Refresh the TeraBox cookie before long jobs: re-login right before exporting it.
Do not treat TeraBox as infrastructure: it has no API, versioning, or SLA — it is a consumer convenience copy.

Frequently Asked Questions

S3 key prefixes become folders. An object at media/clips/a.mp4 lands at the same path under your TeraBox target folder.

Yes. CloudsLinker maps S3 prefixes to TeraBox folders. An S3 client preserves them too if you keep the downloaded structure intact.

They fail on free TeraBox. Upgrade to Premium (20 GB cap), split them, or leave large archives in S3 — which is the better home for them anyway. CloudsLinker's size filter skips them automatically.

With an Access Key ID, Secret Access Key, and the bucket region. Use a scoped, read-only IAM key and delete it after the move. TeraBox connects by browser cookie.

Yes — S3 charges egress for data leaving the bucket, plus request fees. CloudsLinker reads each object once, but AWS still bills that egress. Estimate it before a large transfer.

Yes. CloudsLinker filters by prefix, type, size and date — ideal for pulling only the browsable files and leaving large archives in S3.

Data travels over TLS. S3 uses your scoped access key (rotate or delete it afterward). TeraBox stores files server-side under its own keys; log out and back in to invalidate the cookie afterward.

Conclusion

For a handful of objects, an S3 client like Cyberduck or rclone downloads them locally for upload to TeraBox. For a larger set of suitably sized files, CloudsLinker connects AWS S3 with your access key and TeraBox by session cookie and runs the move server-side, sidestepping repeated egress through your own machine. The 4 GB free per-file cap is the deciding constraint — TeraBox fits S3 buckets full of photos, documents, and small media far better than buckets of large archives. Mind egress costs on the AWS side and verify the copy before deleting anything.

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