Resumable upload
A temporary network interruption does not require restarting the entire file. Continue from the previous upload position.
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OKPAN File Transfer
Send large files without the usual friction.
After signing in, files up to 2 GB can be uploaded for free. Choose an acceleration node, expiry time and download controls before sharing.
✓
Recipients can download through the transfer link without registering or signing in.
Built for fast, controlled delivery
OKPAN combines resumable upload, multi-region routing, link controls and transfer records in one focused workflow.
Multi-region acceleration
Choose among Mainland China, Asia, North America and Europe before uploading for a more suitable route.
Explore node coverage›Link-level controls
Set retention time, download limits, access passwords and burn-after-reading behavior before sharing.
See control options›Transfer history
Review active and expired transfers, download counts and current status from one clear history list.
View history example›
Choose before upload
Use a transfer route closer to your location.
Node selection is completed before uploading. This makes the route transparent and helps reduce avoidable latency.
Mainland ChinaBeijing / Shanghai / Guangzhou · under 30 ms
AsiaTokyo / Singapore · under 60 ms
North AmericaVirginia / Oregon · under 80 ms
EuropeFrankfurt / London · under 85 ms
Flexible controls for every transfer
Start with the free 2 GB allowance, then configure acceleration, access protection and transfer history according to the delivery scenario.
Everyday file delivery starts free
Files up to 2 GB can be sent without purchasing an upload package, making quick temporary delivery straightforward.
Free upload limit
Suitable for documents, compressed packages, images and short videos.
✓No paid package required within 2 GB
✓Download through a direct transfer link
No sign-in for recipients
Recipients can open a valid link directly, reducing delivery friction.
✓No OKPAN account required
✓Suitable for clients and external partners
Temporary delivery
Files can automatically expire instead of remaining permanently available.
✓Choose 24 h, 12 h, 6 h or 60 min
✓Clear expiration status
Choose the transfer node before uploading
Four regional routes make the network path more transparent and help improve upload and download performance.
Mainland China routes
Routes through Beijing, Shanghai and Guangzhou for domestic delivery.
✓Estimated latency under 30 ms
Asia routes
Tokyo and Singapore routes for users across Asia.
✓Estimated latency under 60 ms
Europe and North America
Frankfurt, London, Virginia and Oregon routes for international transfers.
✓Estimated latency under 80–85 ms
Decide when and how the file can be downloaded
Link-level controls help match the transfer to internal delivery, client review or one-time access scenarios.
File retention
Automatically invalidate a transfer after a selected period.
✓24 h / 12 h / 6 h / 60 min
✓Clear expiry countdown
Download limit
Restrict the number of successful downloads or allow unlimited access.
✓1 / 10 / 100
✓Unlimited after package purchase
Burn after reading
Delete the file after the first successful download for one-time delivery.
✓One-time download scenario
✓Can be combined with access password
Know the status of every transfer
History records make it easier to identify active, expired and burned transfers and review download counts.
Active transfers
Review remaining time, downloads and the selected node.
Expired transfers
Expired items remain clearly marked in the history list.
Download count
See how many successful downloads occurred before expiration.
Transfer history at a glance
Filter recent transfers by status and review file size, download count, node and current availability.
File
Size
Downloads
Node
Status
ZIPProject_Delivery.zip
1.36 GB8 / 100Europe
Active
MP4Product_Demo.mp4
836 MB3 / 10Asia
Active
PDFClient_Proposal.pdf
18.4 MB7 / 10Mainland China
Expired
DOCPrivate_Contract.docx
2.8 MB1 / 1Europe
Burned
Temporary delivery with clear protection
The sender decides the route, validity and download behavior before a link is created.
Link access control
Passwords, validity periods and download limits reduce uncontrolled access to temporary files.
Visible transfer status
Active, expired and burned states are shown clearly, together with download counts.
Explicit node selection
The transfer route is selected before upload instead of being hidden behind an automatic process.
File transfer questions
Yes. Files up to 2 GB can use the free file-transfer service. Larger files or higher-frequency usage can be expanded with a transfer quota package.
No. The recipient can open a valid transfer link and download the file without registering or signing in, subject to any password or download controls set by the sender.
Node selection determines the upload route. Choosing it first makes the route clear and helps the sender select a region closer to the current network location.
The transfer is intended to become unavailable after the first successful download. This option is suitable for one-time delivery and should be used carefully.
The file-transfer workflow supports resumable upload. When supported by the active session and network environment, the upload can continue from the previous position instead of restarting from zero.
Send the file. Keep control of the link.
After signing in, files up to 2 GB can be transferred for free with node, expiry and download controls.
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