Generate a thumbnail blob from an image URL. Exposed as a primitive so custom generators (e.g. clip composition → first video frame) can delegate. Resolves undefined when the optional signal aborts before the image finishes loading.
undefined
signal
Optional
Generate a thumbnail blob from an image URL. Exposed as a primitive so custom generators (e.g. clip composition → first video frame) can delegate. Resolves
undefinedwhen the optionalsignalaborts before the image finishes loading.