fast_thumbhash

A fast Python package for ThumbHash image encoding/decoding using Rust bindings (PyO3, maturin) to the official thumbhash crate.

fast_thumbhash is 60.5x faster than the pure Python implementations I tested:

28.13854099076707 ms (thumbhash)
0.46491601096931845 ms (fast-thumbhash - this package)

thumbhash-python was also taking the same time range as thumbhash (27 - 35 ms).

• Exposes rgba_to_thumb_hash, thumb_hash_to_rgba, thumb_hash_to_average_rgba, thumb_hash_to_approximate_aspect_ratio.
• Supports raw RGBA bytes and Pillow Image (Pillow is optional).

pip install fast-thumbhash

from fast_thumbhash import rgba_to_thumb_hash, thumb_hash_to_rgba
from PIL import Image

img = Image.open('example.png').convert('RGBA')
thash = rgba_to_thumb_hash(img)
restored = thumb_hash_to_rgba(thash)

MIT