how can i make it work for a large file upto 1Gb when i tried with 500MB size there is no success message

[saikiran243]

[miztiik]

There are plenty of reasons this could go wrong.
The code shown here is not sensitive to tracking upload progress and give feedback to the user. Did you check the dev logs in the browser?
In any case, The code is opensourced, you can modify it as you see fit.