Hash with BLAKE3 only, so skipping the upload actually saves time

Shipped

August 9, 2026 at 6:17 PM UTC

Author

kamo

Commit

066e07b

Dedup worked — the server logged 'linked WITHOUT upload' and 358 MB never left the machine — but the member still waited, because computing SHA3-256 alongside BLAKE3 took ~20 seconds where the upload it replaced took 18.8. js-sha3 is pure JavaScript at roughly 25 MB/s; BLAKE3 runs in WASM. The client now computes BLAKE3 alone and the server matches on it plus exact size.