198527 2019-06-04 06:30:41 -0700 HTMLImage​Element​.decode() method doesn't work for SVG files 2019-11-13 13:49:05 -0800 1 1 1 Unclassified WebKit Images Safari 12 Unspecified Unspecified RESOLVED DUPLICATE 201243 InRadar P2 Normal --- 1 frederic.junod sabouhallawa achristensen cdumez dpaddock jkieboom sabouhallawa simon.fraser thorton webkit-bug-importer oldest_to_newest 1541536 0 frederic.junod 2019-06-04 06:30:41 -0700 The HTMLImage​Element​.decode() method never resolves when the src references a SVG image. To reproduce the issue: ``` const img = new Image(); img.src = 'https://unpkg.com/@mapbox/maki@4.0.0/icons/fuel-15.svg'; img.decode() .then(() => { console.log('loaded'); }) .catch(() => { console.log('error'); }); ``` Expected behavior: `loaded` is displayed in the console. (this is the case on Chromium and Firefox) 1542472 1 webkit-bug-importer 2019-06-06 10:22:37 -0700 <rdar://problem/51488679> 1542524 2 371520 sabouhallawa 2019-06-06 12:25:24 -0700 Created attachment 371520 decode-svg 1542525 3 sabouhallawa 2019-06-06 12:26:08 -0700 What is the meaning of decoding an SVG image? And why do you expect the decode() promise to be resolved rather than being rejected? The specs https://html.spec.whatwg.org/multipage/embedded-content.html#dom-img-decode says: image . decode() This method causes the user agent to decode the image in parallel, returning a promise that fulfills when decoding is complete. The promise will be rejected with an "EncodingError" DOMException if the image cannot be decoded. Since the SVG image cannot be decoded, the promise is rejected. Open the attached test case. 1542532 4 frederic.junod 2019-06-06 13:03:03 -0700 I understand that an SVG image doesn't needs to be decoded but the promise could nevertheless be resolved. Context: the decode function is used in the OpenLayers library [1] to load and decode images in any format See also: https://chromium-review.googlesource.com/c/chromium/src/+/585220/ [1] https://github.com/openlayers/openlayers/blob/v6.0.0-beta.9/src/ol/Image.js#L160-L175 1542574 5 simon.fraser 2019-06-06 15:39:08 -0700 The spec is explicit about vector images: "If decoding does not need to be performed for this image (for example because it is a vector graphic), resolve promise with undefined." 1590027 6 sabouhallawa 2019-11-13 13:49:05 -0800 This was fixed in r249367 and r249594. *** This bug has been marked as a duplicate of bug 201243 *** 371520 2019-06-06 12:25:24 -0700 2019-06-06 12:26:29 -0700 decode-svg decode-svg.html text/html 297 sabouhallawa PGJvZHk+CiAgICA8c2NyaXB0PgogICAgICAgIGNvbnN0IGltZyA9IG5ldyBJbWFnZSgpOwogICAg ICAgIGltZy5zcmMgPSAnaHR0cHM6Ly91bnBrZy5jb20vQG1hcGJveC9tYWtpQDQuMC4wL2ljb25z L2Z1ZWwtMTUuc3ZnJzsKICAgICAgICBpbWcuZGVjb2RlKCkKICAgICAgICAudGhlbigoKSA9PiB7 CiAgICAgICAgICAgIGFsZXJ0KCdsb2FkZWQnKTsKICAgICAgICB9KQogICAgICAgIC5jYXRjaCgo KSA9PiB7CiAgICAgICAgICAgIGFsZXJ0KCdlcnJvcicpOwogICAgICAgIH0pOwogICAgPC9zY3Jp cHQ+CjwvYm9keT4K