FILE SHARING GUIDE
Temporary File Links Explained
A temporary file link lets somebody access a file for a limited period instead of keeping the download available indefinitely. It is useful when your goal is to deliver a file, not create permanent online storage.
What is a temporary file link?
A temporary file link is a web address connected to an uploaded file or transfer. While the link is active, somebody who has access to it can open the transfer and download the shared content.
Unlike a permanent public page, the link is designed to stop working after its expiration period. This makes it suitable for files that only need to be available long enough for the recipient to receive them.
Why do file-sharing links expire?
File-sharing services need storage and bandwidth to keep transfers available. Automatically expiring old transfers helps prevent temporary delivery links from turning into permanent storage.
Expiration can also reduce the amount of time an old link remains useful if it is forwarded, saved in an old message, or discovered later by somebody who was not originally intended to receive it.
What happens when a link expires?
Once the transfer reaches its expiration point, the old link should no longer be relied on as a way to access the file. If somebody still needs the content afterward, the sender may need to create a new transfer.
That is why temporary sharing should never be treated as your only copy of an important file. Keep the original on your own device or another storage location you control.
Choosing the right expiration period
The best expiration period depends on how quickly the recipient is expected to download the files. A short window can work well for something being sent immediately, while a longer period may make more sense when several people need time to access the same transfer.
Think about these questions:
• When will the recipient realistically open the link?
• Does more than one person need to download the files?
• Is the link being placed on printed material?
• Would the file still be useful weeks from now?
• Is there a reason to limit how long access remains available?
Temporary links are different from cloud storage
Cloud-storage services are often designed to keep files organized and available over long periods. Temporary transfer services have a different purpose: move a file from one person to another and then let the transfer expire.
If you need a file to remain available permanently, temporary sharing may not be the right solution. If you simply need to deliver a large file without maintaining a permanent shared folder, an expiring link can be more convenient.
Does expiration make a link private?
No. Expiration limits how long the link is intended to remain usable, but it does not necessarily control who can open it while it is active.
If an active unprotected link is forwarded to another person, that person may also be able to access the transfer. For content that needs additional protection, use password protection when available and share the password carefully.
Read: Password-Protected File Sharing →Be careful when using temporary links with QR codes
A QR code can point to a temporary file link, but the QR code itself does not extend the life of the transfer. If the underlying link expires, scanning the printed QR code later will not restore the old transfer.
This matters when QR codes are printed on menus, posters, signs, flyers, or other materials that may stay in use longer than the file-sharing link.
Read: How to Share a PDF With a QR Code →When temporary links are especially useful
• Delivering large files to a client
• Sending photos or videos to friends or family
• Sharing event materials for a limited time
• Sending documents that do not need permanent hosting
• Providing short-term access to project files
• Replacing oversized email attachments with one link
Temporary links and large files
Temporary links are particularly useful for large files because the file does not need to travel through the same email or messaging service used to communicate with the recipient.
Instead, the sender uploads the file once and distributes the resulting link. The recipient then downloads the file directly from the transfer service.
Read: How to Send Large Files Online →How expiration works on JustSeconds
JustSeconds is designed around temporary file sharing. Guest links are designed to expire after 7 days. Registered users can choose longer expiration periods, up to 30 days where available.
Before sending a link, choose a period that gives the recipient enough time to download the files while avoiding keeping the transfer active longer than necessary.
Temporary-link checklist
✓ Know when the link will expire.
✓ Give recipients enough time to download.
✓ Keep your original files somewhere safe.
✓ Remember that expiration alone does not make a link private.
✓ Use password protection when appropriate.
✓ Avoid printing a short-lived link on long-term materials.
Frequently asked questions
Can somebody download the file after the link expires?
An expired transfer should not be relied on for future access. If the recipient still needs the file, the sender may need to upload it again and create a new link.
Is an expiring link automatically secure?
Expiration limits the period of access, but anyone who receives an active unprotected link may still be able to open it. Password protection can add another access step when available.
Should I use a temporary link for permanent documents?
Usually not if the same public link needs to keep working indefinitely. Temporary links are better suited to delivery and short-term sharing.
Does the recipient need an account?
A recipient can normally access an active JustSeconds share link without registering. A password-protected transfer also requires the password selected by the sender.