File Handling on the Web

Importing options

Import a file using an input element.

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Drag and drop a file into the editor area.
Paste a file in the window.
Install this app as a PWA and then choose it when sharing from other apps.
Install this app as a PWA and then open a *.txt file in the operating system.
Open a file using the File System Access API.
Re-open the previously opened file using the File System Access API.

Exporting options

Download using an a anchor element.
Share with other apps with the Web Share API.

The Web Share API is not supported
Save back to disk using the File System Access API.