When you are signed in and upload a file larger than 100 MB, FileMv automatically switches to a resumable, chunked upload. You do not have to do anything — the switch is invisible.
What resumable means in practice
The file is sent in small chunks, and the upload tracks exactly how much has been accepted. If your connection drops for a moment — a Wi-Fi blip, a network switch — the upload retries automatically and continues from where it left off, instead of starting over. You only see an error if the connection stays down through several retries.
What does NOT survive
The resume works within the open page. Keep the browser tab open until the upload finishes — closing the tab or the browser abandons the upload, and it has to be started again. Background uploads that survive a closed tab are not supported yet.
Smaller files and anonymous uploads
- Files of 100 MB or less upload in one piece — simpler and just as fast at that size.
- Anonymous uploads (no account) are capped at 100 MB, so they always use the simple path — the resumable machinery is a registered-account feature, along with the larger size caps.
Tips for very large files
- A wired or stable connection matters more than a fast one — resumable uploads tolerate slowness well, but a tab put to sleep by the OS can stall the transfer.
- Watch the progress indicator; when it completes, the file appears in your Drive and is safe.