# Hugging Face — From Chunks to Blocks: Accelerating Uploads and Downloads on the Hub

- Company: Hugging Face (huggingface.co)
- Announced: 2025-02-12T00:00:00+00:00
- Category: infrastructure-release
- Subject: Platform
- Source: https://huggingface.co/blog/from-chunks-to-blocks
- Record: https://forck.live/items/1749-from-chunks-to-blocks-accelerating-uploads-and-downloads-on-the-hub

Hugging Face's Xet team announces a new chunk-based approach using blocks, shards, and key chunks to accelerate uploads and downloads on the Hub, with open-sourced components xet-core and hf_xet integrated with huggingface_hub.

## Evidence

Verbatim from https://huggingface.co/blog/from-chunks-to-blocks:

> To bring faster file transfers to the Hub, we've open-sourced xet-core and hf_xet, an integration with huggingface_hub which uses a chunk-based approach written in Rust.

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