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TransferSize

Guide

Continue an interrupted upload

Wi-Fi dropped halfway through? Leave the upload tab open. TransferSize sends large files in parts, so it can retry interrupted work during the active session instead of making every brief connection problem a complete restart.

5 steps · No recipient account required · Updated 2026-09-10

Where to startChoose files → Continue → Create a link or Send by email
Keeping the sender’s session open while a short interrupted section retries.

At a glance

A short Wi-Fi interruption

One file travels in smaller parts
1Confirmed
2Confirmed
3Confirmed
4Retry
5Waiting
6Waiting

Keep the upload session open. A failed part can retry while confirmed parts are retained.

Illustration of part retries

You are sending a video when the router briefly disconnects. Keep the page open, reconnect, and watch the status. The uploader may retry on its own. Use Retry if that button appears, then wait for the final confirmation before sharing anything.

Steps

Follow these steps

  1. 01

    Do not refresh

    Leave the upload page open and do not start a second copy.

  2. 02

    Reconnect

    Restore a steady connection and keep the device awake.

  3. 03

    Read the message under the progress bar

    TransferSize will pause or retry the part that failed while keeping confirmed progress.

  4. 04

    Use Retry if it appears

    Wait until the connection is stable, then use the button shown on the page.

  5. 05

    Wait for Transfer ready

    The upload is finished only when the link and Copy link button appear.

What the recipient sees

The recipient opens the transfer link in a browser, enters the password if one was set, previews supported files when enabled, and downloads without creating an account.

Keep this in mind

Know what happens next

A part is a small piece of the upload

Imagine delivering a book in parcels instead of one enormous box. If a parcel is interrupted, the uploader can retry that piece. The recipient still receives the original file: they do not need to join the pieces themselves. This helps with a brief network problem, but it does not make a disconnected computer upload.

Read the message before changing anything

A paused progress bar can mean a retry, a network wait, or final checks. Look for the text beside the progress controls. If progress resumes after reconnecting, let it continue. Starting several copies at once uses the same connection and makes it harder to know which one finished.

The open tab matters

Keep the page open, the device awake, and the source file available. Do not assume that a browser restart, a closed laptop, or deleting site data will preserve the upload session. Recovering an interrupted part is different from promising an upload can resume tomorrow after you close everything.

If the final check seems stuck

The last stage may be confirming what arrived before it creates a usable transfer. The progress bar alone is not proof of completion. Follow a visible retry instruction if the page offers one. If the page reports an unrecoverable session, note the message and prepare a new transfer rather than sharing an unfinished address.

Prepare a better second attempt

Use a steady network and power connection. Copy a file from an unreliable external or network drive onto the computer first if you have space. Pause other large uploads. Try a small ordinary file to see whether the basic connection works before committing to another long run.

What to send support

Record the time, browser, file size, stage of the upload, and the exact visible error. Include a transfer or support reference if the page provides one. Do not send your password, private file contents, or secret access links in a public help post.

Want the technical detail?

Part retry, persisted upload state, and finalization are separate mechanisms. This guide describes the dependable user workflow: retain the active browser session and source files. Successful server confirmation is needed before a transfer should be treated as ready.

Questions

Questions people ask

Can it continue after I close the browser?

Do not rely on that. Keep the tab open.

Does one failed part restart the whole file?

Normally no. The failed part can be retried on its own.

Ready?

Choose your files and follow the steps above.

Choose files