Encode a canvas to a Blob with the requested image format. Returns null if the browser fails to encode (matches toBlob's API).
null
toBlob
The quality parameter is honored only for lossy formats (jpeg, webp); PNG ignores it per the HTML spec.
quality
Encode a canvas to a Blob with the requested image format. Returns
nullif the browser fails to encode (matchestoBlob's API).The
qualityparameter is honored only for lossy formats (jpeg, webp); PNG ignores it per the HTML spec.