In the future you may even be able to save the handle and retain permission to the file or directory between page reloads or even browser restart. I've been exp

In the future you may even be able to save the handle and retain permission to the file or directory between page reloads or even browser restart. I've been experimenting with this in Chromium. There's a preliminary implementation behind a flag (--enable-features=kFileSystemAccessPersistentPermissions). The preliminary implementation is still buggy, but it's an extremely useful feature. You could use it to e.g. make a web version of VSCode that only ever has to request your permission once, and can then edit any file in your workspace directory without spamming you with more permission requests, just like the Electron version of VSCode. (The persistent file access permission is displayed in the address bar and can be revoked at any time).