demo · v143

Blob.bytes()

Type some text or pick a file. The page calls both blob.bytes() and new Uint8Array(await blob.arrayBuffer()) on the same blob and shows the result and the timing for each.

input

 or pick a file (read up to 4 MB shown)

blob.bytes()

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arrayBuffer() round-trip

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the call

// v143: a direct Uint8Array, no ArrayBuffer hop
const u8 = await blob.bytes();

// Equivalent to (and what people wrote before):
const u8old = new Uint8Array(await blob.arrayBuffer());

see also