如何使用 Javascript 将 HEIF (.heic) 图像格式中的 EXIF 方向值设置为 1 并将结果作为 blob 返回？

Question

I have a blob created from an HEIF image which probably contains EXIF Orientation value. I'm using heif2any.js to convert it to JPEG image but I want to prevent double-rotation problem stated in this answer: https://stackoverflow.com/a/28596303/9249141 (the library suggested to be used does not support HEIF format).

So I simply need a JS function which takes a blob created from an HEIF image, remove its EXIF Orientation tag OR set EXIF Orientation value to 1, and then return the result as a new blob.

Answer 1

You don't need to worry about it since heic2any discards metadata in the conversion. That's one of the downsides of the utility, but an upside for you!