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Use @nextcloud/upload for chunked file uploads #3449
Description
The Forms app currently uses a basic file input with simple FormData uploads. This works but has limitations for large files.
Nextcloud has a proper upload library (@nextcloud/upload) that supports chunked uploads, progress tracking, and resumability - the same experience users get in Nextcloud server.
Would be nice to add that to forms as well
Activity
aleksandrmukhin74 commentedon Jul 19, 2026
I can confirm this issue on Android PWA — video files over ~2.1 MB crash immediately due to WebView IPC buffer limit. Chunked uploads would fix this completely.
Koc commentedon Jul 19, 2026
I thought about the implementation and here are my findings:
@nextcloud/uploadexcept serverMKCOLto initialize upload workspaceMOVEassemble call to merge chunksSo it seems like we should create a temporary folder in form owner filesystem, share this folder with submitter and upload file inside it. After that we can submit form by passing fileId.
WDYT @Chartman123 ?
Chartman123 commentedon Jul 19, 2026
Pinging @susnux, too, as he probably knows more about the lib and how to use it best with Forms. :)
susnux commentedon Jul 19, 2026
Chunked uploads would not solve this because a chunk is usually >= 10MB so bigger than your 2.1MB.
There is, the photos app.
@nextcloud/uploadis not actively worked on, we will instead add uploading API to@nextcloud/files(its already available in beta with v4.1.0-beta). Moreover soon there will be a component for this purpose in@nextcloud/vueso it can be used with Vue 2 and Vue 3.Koc commentedon Jul 19, 2026
@susnux so, what's our next actions? Wait for libraries update and return to this issue after that?
susnux commentedon Jul 20, 2026
I would recommend waiting ~a month and then use the logic from the library
Koc commentedon Aug 31, 2026
@susnux hey-hey!
Have you released everything that planned? As far I can see the latest tag was released few days ago. Does it enable work on the current task?
Where can I get inspiration (are we using this new uploaded anywhere already)?
susnux commentedon Aug 31, 2026
nextcloud-files v4.1.0 beta was release including the API already - the component is being reviewed:
nextcloud-libraries/nextcloud-vue#7882
Koc commentedon Aug 31, 2026
@susnux sorry, I didn't get. Should I wait for nextcloud-libraries/nextcloud-vue#7882 as well?
susnux commentedon Aug 31, 2026
Depends if it makes sense to reuse the component here, otherwise you can also just use the logic from the library