Zarr features supported by different implementations

Test Results Across Implementations
implementation last run language read int64 - v2 read int32 - v2 read int32 - v3 read float64 - v2 read float32 - v2 read bool - v2
Rarr 2026-04-13 R Project ok
(0.476 s)
ok
(0.465 s)
ok
(0.456 s)
ok
(0.466 s)
ok
(0.461 s)
ok
(0.467 s)
pizzarr 2026-04-08 R Project ok
(0.681 s)
ok
(0.671 s)
ok
(0.667 s)
ok
(0.664 s)
ok
(0.661 s)
ok
(0.648 s)
zaro 2026-03-28 R Project ok
(0.567 s)
ok
(0.621 s)
ok
(0.620 s)
ok
(0.632 s)
ok
(0.614 s)
ok
(0.608 s)
zarr-java 2026-04-12 Java ok
(0.532 s)
ok
(0.556 s)
ok
(0.546 s)
ok
(0.555 s)
ok
(0.552 s)
ok
(0.531 s)
zarr-python 2026-04-12 Python ok
(0.336 s)
ok
(0.309 s)
ok
(0.294 s)
ok
(0.303 s)
ok
(0.299 s)
ok
(0.290 s)
zarrs 2026-04-12 Rust ok
(0.009 s)
ok
(0.023 s)
ok
(0.009 s)
ok
(0.030 s)
ok
(0.032 s)
ok
(0.009 s)