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 2026-04-09 R Project ok
(0.462 s)
ok
(0.458 s)
ok
(0.459 s)
ok
(0.466 s)
ok
(0.467 s)
ok
(0.461 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 2026-04-07 Java ok
(0.581 s)
ok
(0.536 s)
ok
(0.534 s)
ok
(0.563 s)
ok
(0.557 s)
ok
(0.524 s)
zarr-python 2026-04-05 Python ok
(0.342 s)
ok
(0.302 s)
ok
(0.299 s)
ok
(0.302 s)
ok
(0.302 s)
ok
(0.295 s)
zarrs 2026-04-05 Rust ok
(0.009 s)
ok
(0.023 s)
ok
(0.008 s)
ok
(0.027 s)
ok
(0.029 s)
ok
(0.009 s)