How Can I Suggest a Filename for Data: URI Downloads?

Providing a Suggested Filename for Data: URI Downloads

When using data: URI to download data as a file, the browser typically generates a generic filename. However, it is often desirable to specify a suggested filename to the user for convenience.

Default Name Suggestion with the download Attribute

The HTML download attribute provides a solution for suggesting a default filename for data: URI downloads:

<a download='FileName' href='data:application/octet-stream;base64,SGVsbG8='>

This attribute works on most modern browsers, including Chrome, Firefox, Edge, Opera, desktop Safari 10 , iOS Safari 13 , and excludes IE11. When the user clicks the anchor tag, the browser will suggest the specified FileName as the default download name.

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