pngjs offers a pure JavaScript implementation for PNG image encoding and decoding. It's a versatile solution, suitable for both browser and Node.js environments, allowing developers to programmatically manipulate PNG image data. With pngjs, you can read pixel data, modify image properties, and write out new PNG images without relying on native dependencies, making it highly portable and easy to integrate.
The npm package pngjs has seen sporadic releases since its initial version in June 2013. Releases were infrequent until October 2015. Activity peaked in April 2020 with three versions. The most recent release was version 7.0.0 in February 2023. There have been no releases in 2024 or 2025 (up to August).
Pngjs npm package downloads show a general upward trend from March 2024 to August 2025, jumping from ~19 million to ~51 million monthly. However, September 2025, shows a sharp decline to ~21 million, likely due to the month being incomplete.
