pmtiles-kotlin

A compact, spec-verified reader for Protomaps' PMTiles v3 format, written in pure Kotlin with zero third-party dependencies. Reads individual vector or raster tiles from a local archive by z/x/y with a single seek, no tile server, ideal for offline maps on any JVM or Android. Fills a gap in an ecosystem otherwise served only by JS, Go, Rust, Swift, and C++ readers.

Features

• •Pure Kotlin, no Android dependency, no third-party libraries
• •Random-access tile reads by z/x/y from a single .pmtiles file
• •Handles the PMTiles v3 spec: Hilbert-curve ordering, directory tree, compression
• •Returns decompressed MVT/PBF or raster tile bytes
• •Thread-safe concurrent tile reads