Cách khôi phục hình ảnh đã chỉnh sửa trong Xem trước trên macOS

Preview has quite the set of editing tools for images. You can crop and resize an image, you can draw over it, and you can convert it to a different format. Generally speaking, when you edit an image in an image editing tool, the changes are permanent. With Preview though, there’s an option to restore an edited image back to its original version, or to a previous version. Here’s how.

Restore images edited in Preview

Open the image that you want to restore to its original version in Preview. On the menu bar, go to File and select the Revert To option. The sub-menu will show you the recent versions of the image that are available but it will not show all of them. Click the ‘Browse All Versions…‘ option.

Use the arrows on the right to browse the different versions of the image that Preview has. Once you find the original version, or any other version that you’d like to restore the image to, click the ‘Restore’ button at the bottom.

Preview records a new version of an image each time you tap the Command+S keyboard shortcut. It also offers a helpful timeline along the right of the image history view to navigate the different versions that are available, and pick the one you want to restore.

The image is restored right away and you’re free to edit it again. Editing it will create a new version of the image that is separate from the other versions that Preview already has.

Delete file versions in Preview

It goes without saying that while this feature is useful, it can also pose a security threat. You may have cropped out a part of an image to keep classified information out of it but a restored version will add it right back. To prevent this from happening, you need to delete the version with the classified information. Again, this is pretty easy to do.

Mở tệp trong Xem trước. Trên thanh menu, đi tới Tệp> Hoàn nguyên về.

Khi bạn đang ở trong trình duyệt phiên bản, hãy chọn phiên bản bạn muốn xóa. Di chuột qua đầu màn hình và đợi thanh menu xuất hiện. Khi thanh menu hiển thị, hãy chuyển đến Tệp> Hoàn nguyên về và menu phụ sẽ có tùy chọn 'Xóa Phiên bản này'. Nhấp vào nó và phiên bản cụ thể của tệp sẽ bị xóa vĩnh viễn. Không cần phải nói rằng sẽ không có cách nào để khôi phục phiên bản sau khi bạn xóa nó.