[1] HEIF Technical Information - High Efficiency Image File Format () https://nokiatech.github.io/heif/technical.html
[2] nokiatech/heif: High Efficiency Image File Format () https://github.com/nokiatech/heif
[3] IV. HEIF Reader JavaScript Implementation · nokiatech/heif Wiki () https://github.com/nokiatech/heif/wiki/IV.-HEIF-Reader-JavaScript-Implementation
[4] HEIF - High Efficiency Image File Format () http://nokiatech.github.io/heif/
[5] #42775 (Support uploading files in HEIF and HEVC formats) – WordPress Trac () https://core.trac.wordpress.org/ticket/42775
[7] 2018-01-25/HEIF - YoyaWiki Plus! () https://pwiki.awm.jp/~yoya/?2018-01-25/HEIF
[8] オンラインで実施された高校生向けテストの提出にiPhoneを使用した生徒が不合格に、生徒たちは集団訴訟へ - GIGAZINE () https://gigazine.net/news/20200522-ap-test-iphone-jpeg-heic/
[9] 212489 – [macOS] Allow selecting HEIF images if the 'accept' attribute includes an image MIME type that the platform can transcode the HEIF to () https://bugs.webkit.org/show_bug.cgi?id=212489
[10] News from WWDC23: WebKit Features in Safari 17 beta | WebKit, https://webkit.org/blog/14205/news-from-wwdc23-webkit-features-in-safari-17-beta/