downloads.FilenameConflictAction

The FilenameConflictAction type of the downloads API specifies what to do if the name of a downloaded file conflicts with an existing file.

This type defines the values that can be used for the conflictAction property of the downloads.download function's options parameter.

Type

Values of this type are strings. Possible values are:

"uniquify"

The browser will modify the filename to make it unique.

"overwrite"

The browser will overwrite the old file with the newly-downloaded file.

"prompt"

The browser will prompt the user, asking them to choose whether to uniquify or overwrite.

Browser compatibility

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	WebView Android	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet
FilenameConflictAction	Yes	79	47	?	Yes	No	?	?	48-79	?	?	?
prompt	Yes	79	No	?	Yes	No	?	?	No	?	?	?