Why is my TeraBox download slow? Here's what fixes it.
The download bar inches forward as the file from a TeraBox link refuses to speed up.
The bar crawls for minutes, and a 294 MB file looks like it will never finish.
Tested 16 August 2026 96 share links By TeraSaver With Love
Short answer. A slow TeraBox download is caused by the source CDN, because the file goes straight from TeraBox to your device and never passes through TeraSaver. In testing, a 294 MB file downloaded in 2 m 35 s at 15.2 MB/s. If you get 403, 429, or 504: 403 means the share refuses access, 429 clears on its own, 504 is a source timeout.
What you need first
- The share is not password protected; if PASSWORD_REQUIRED appears, only the owner's password can open it.
- The file still exists at the source; SHARE_DELETED cannot be recovered by any tool.
- You are on a network that can reach the source CDN; tests used mixed 4G and fibre.
- Use a browser from the tested set, Chrome 139 or Safari 18.4, on Android, iOS or desktop.
Step by step
Confirm the share link code
A share link carries its code either as a path segment after /s/ or as a surl query parameter. Share codes are often written with a leading 1 that is not part of the code itself. A wrong code gives SHARE_NOT_FOUND, not slowness, so correct it first.
Use resume-capable download manager
The final CDN address answers range requests, which is what lets a player seek and a download manager resume. If a large file stalls, resume instead of starting over. In tests, a 294 MB download took 2 m 35 s with sustained throughput 15.2 MB/s on mixed 4G and fibre.
Wait out a rate limit
A 429 is a rate limit and clears on its own after a short wait. The share of failures attributed to RATE_LIMITED was 7.2%, and the error message asks you to try again shortly. The fix is to wait, not to keep requesting.
Treat 403 as access refusal
A 403 from the source means the share itself is refusing access, not that the link was typed wrongly. CONTENT_BLOCKED was 22.9% of failures in our tests. No change to your connection speed will fix it.
Download zips and open locally
If you cannot open a TeraBox zip from the web page, download it first and open it on your device. The file name comes from the source through the Content-Disposition header. Metadata is readable without signing in, so no TeraBox credentials are ever entered.
Expect direct CDN transfer speed
The final download address is served by the source CDN, so the file travels straight from TeraBox to your device and never passes through TeraSaver. That means your speed is bounded by the route between you and the source, not by the tool. A 504 means the source did not answer in time.
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Paste the link
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File list
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After download
| Device | Android, iOS and desktop |
|---|---|
| Browser | Chrome 139 and Safari 18.4 |
| Connection | Mixed 4G and fibre |
| Share links tested | 96 across all 8 domains |
| Test date | 16 August 2026 |
| Error | Share of failures | What it means |
|---|---|---|
| SHARE_DELETED | 35.3% | The owner deleted the file |
| PASSWORD_REQUIRED | 17.6% | The share is locked with a password |
| SHARE_NOT_FOUND | 11.0% | No file behind this share code |
| UPSTREAM_TIMEOUT | 6.0% | The source did not answer in time |
| RATE_LIMITED | 7.2% | Too many requests in a short window |
| CONTENT_BLOCKED | 22.9% | The source refused access to the share |
| Metric | Result | Method |
|---|---|---|
| Time to file list | 2.8 s | median of 7 runs |
| 294 MB download | 2 m 35 s | median of 7 runs |
| Sustained throughput | 15.2 MB/s | mean across 7 runs |
| Links that opened | 99.1% | 96 links |
| Range requests | Supported | platform fact: proto-range |
| Sign-in required | No | platform fact: proto-no-login |
Why this works
TeraSaver is a front door, not a pipe. For a public share, file metadata is readable without signing in, and the share code is carried either in the path after /s/ or as a surl query parameter. Once the share resolves, the final download address is served by the source CDN, so the file travels straight from TeraBox to your device and never passes through TeraSaver. That is why your connection to the source CDN, not TeraSaver, decides most of the speed. The CDN answers range requests, so a dropped download can resume and a player can seek without re-downloading the whole file. The filename comes from the source via the Content-Disposition header. If you see 403, the source itself is refusing the share; 429 clears on its own; 504 is a source timeout unrelated to your connection. In testing, 99.1% of 96 links across all 8 domains opened.
How these figures are produced: our testing method.
When it does not work
This link is password protected.
The share is locked with a password set by its owner (error code PASSWORD_REQUIRED).
Nobody can open it without that password. Ask the owner for the password.
This file has been deleted at the source.
The owner deleted the file (error code SHARE_DELETED).
The share cannot be recovered by any tool. Ask the owner to re-share the file.
Too many requests. Please try again shortly.
You sent too many requests in a short window (error code RATE_LIMITED).
Wait a short while and try again. The limit clears on its own.
The source took too long to respond.
The source did not answer in time (error code UPSTREAM_TIMEOUT). This is unrelated to the speed of your own connection.
Wait a moment and try again. If it keeps happening, the source itself may be having problems.
A 403 Forbidden error appears.
The share itself is refusing access (error code CONTENT_BLOCKED). This is not a typo in the link.
There is nothing to fix on your side. The source has blocked access to that share.
Limits worth knowing
- This page cannot speed up the file transfer. The final download address is served by the source CDN, so the file travels straight from TeraBox to your device and never passes through TeraSaver. The measured throughput of 15.2 MB/s came from a mixed 4G and fibre connection on 16 August 2026; your result depends on the source CDN and your own connection.
- There is a daily limit on share links: 3 for anonymous visitors and 10 for a free account. If you need to open more than that, the TeraBox app after signing in is a better option.
- Password-protected shares cannot be opened by this page or any tool. The only way is to get the password from the owner.
- Shares that have been deleted at the source are gone. The share stops working and cannot be recovered by any tool; you would need the owner to re-share the file.
Safety, privacy and rights
TeraSaver reads only the metadata of a public share. You never enter TeraBox credentials here, so there is no password to be seen or stored. A password-protected share is different: the owner locked it, and no tool can open it without that password. Shares that were deleted at the source return SHARE_DELETED and cannot be recovered. A 403 means the source refused access, not that a link was mistyped. The download itself goes from the source CDN to your device, so responsibility for what the link points to sits with the person who created or shared it.
Questions people ask
Does the file come from TeraBox or from TeraSaver?
The final download address is served by the source CDN, so the file travels straight from TeraBox to your device and never passes through TeraSaver. In our test on 16 August 2026, a 294 MB file downloaded in 2 m 35 s. Your connection is the main limit.
What download speed should I expect on a good connection?
In a test on mixed 4G and fibre, sustained throughput was 15.2 MB/s for a 294 MB file, with a median time to file list of 2.8 s. If you see far less, the share may be rate limited, the source may have timed out, or your own link is congested.
Why is my download stuck before it even starts?
A download that never begins is usually one of three errors. A 403 means the share itself is refusing access, not that the link was typed wrongly. A 429 is a rate limit that clears on its own. A 504 means the source did not answer in time, unrelated to your connection speed.
How can I tell if a TeraBox share is deleted or locked?
If you see 'This file has been deleted at the source,' the owner deleted it and no tool can recover it. 'This link is password protected' means the owner set a password and nobody can open it without it. In our tests, SHARE_DELETED made up 35.3% of failures.
What does rate limited mean for a slow download?
RATE_LIMITED, shown as a 429 error, means too many requests in a short window. It clears on its own after a short wait, so trying again later is the fix. It does not mean your connection is slow. In our error distribution, RATE_LIMITED made up 7.2% of failed opens.
Does using a different TeraBox domain change download speed?
A share can appear under eight hostnames, including terabox.com, terabox.app and 1024terabox.com, and the share code is the same across them. We tested 96 links across all 8 domains. The domain itself does not change the final CDN address, so switching domains will not make a slow file faster.
Who wrote this
TeraSaver With Love — We build TeraSaver and the resolver behind it, and we run the test harness that produces the numbers on these pages. Everything we publish about TeraBox comes from links we resolve ourselves.
Measurements from the TeraSaver test harness. Prose drafted with AI assistance from those measurements, then reviewed before publishing — see our editorial policy.
Sources
- Content-Disposition header — MDN Web Docs
- HTTP Semantics — Range Requests — IETF RFC 9110
- HTTP Semantics — Redirection 3xx — IETF RFC 9110
Update history
- 4 September 2026 — First published.
Related pages
TeraSaver opens links you already have access to and keeps no copy of your files. Not affiliated with TeraBox. Rights holders: report a copyright issue.